ClassID:

219361

H03F3/45179 - page 4 - CPC Classification

Classification description:

Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements; Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using MOSFET transistors as the active amplifying circuit

Recent Application in this class:
#901
20130278336
2013-10-24

Gain enhancement for cascode structure

#902
20130271217
2013-10-17

Differential amplifier stage with integrated offset cancellation circuit

#903
20130271216
2013-10-17

High side current sense amplifier

#904
20130249635
2013-09-26

Amplifier for output buffer and signal processing apparatus using the same

#905
20130241649
2013-09-19

Regulator with low dropout voltage and improved stability

#906
20130241648
2013-09-19

DRIVING CIRCUIT, OPERATIONAL AMPLIFIER, AND DATA TRANSMITTING METHOD THEREOF

#907
20130234221
2013-09-12

MOS transconductance gain boosting techniques in millimeter-wave range

#908
20130223649
2013-08-29

Load current sensing

#909
20130222064
2013-08-29

Low voltage operation for a power amplifier

#910
20130221995
2013-08-29

Sense amplifier

#911
20130207723
2013-08-15

GM-ratioed amplifier

#912
20130207721
2013-08-15

Envelope tracking amplifier

#913
20130207719
2013-08-15

Transformer power amplifier

#914
20130195289
2013-08-01

Power amplifying apparatus and audio system

#915
20130194039
2013-08-01

Differential amplifier circuit with ultralow power consumption provided with adaptive bias current generator circuit

#916
20130187620
2013-07-25

Power efficient transconductance amplifier apparatus and systems

#917
20130181777
2013-07-18

Multi-stage voltage regulator

#918
20130176082
2013-07-11

Reference voltage generation circuit, oscillation circuit including the same and method for calibrating oscillation frequency of oscillation circuit

#919
20130169364
2013-07-04

Amplifier and transceiver including the amplifier

#920
20130165055
2013-06-27

Output stage for wireless transmitter

#921
20130156084
2013-06-20

Rectifier, received signal strength indicator, and receiver

#922
20130154863
2013-06-20

Amplifier, fully-differential amplifier and delta-sigma modulator

#923
20130154745
2013-06-20

Clipping circuit, differential amplifying circuit, and amplifying circuit

#924
20130154737
2013-06-20

Comparator and amplifier

#925
20130154718
2013-06-20

Fully capacitive coupled input choppers

#926
20130147556
2013-06-13

Squelch detection method and circuit using rectifying circuit for detecting out-of-band signal

#927
20130147555
2013-06-13

Squelch detection method and circuit using dual rectifying circuit for detecting out-of-band signal

#928
20130147553
2013-06-13

Auto-zero amplifier and feedback amplifier circuit using the auto-zero amplifier

#929
20130143511
2013-06-06

Method and apparatus of an input resistance of a passive mixer to broaden the input matching bandwidth of a common source/gate LNA

#930
20130142522
2013-06-06

Differential circuit compensated with self-heating effect of active device

#931
20130135048
2013-05-30

Radio frequency receiver

#932
20130135042
2013-05-30

Broadband linearization by elimination of harmonics and intermodulation in amplifiers

#933
20130135040
2013-05-30

Highly linear, low-power, transconductor

#934
20130120065
2013-05-16

Silicon-on-insulator high power amplifiers

#935
20130113566
2013-05-09

Variable gain amplifier

#936
20130113563
2013-05-09

Gain enhancement for cascode structure

#937
20130093516
2013-04-18

Low output impedance RF amplifier

#938
20130089223
2013-04-11

Output Power Limiter in an Audio Amplifier

#939
20130089161
2013-04-11

Low-Power Modulation in an Amplifier

#940
20130088298
2013-04-11

High performance class AB operational amplifier

#941
20130088297
2013-04-11

PWM re-clocking scheme to reject accumulated asynchronous jitter

#942
20130088296
2013-04-11

Attenuating noise and cross-talk in an audio system by offsetting outputs in phase

#943
20130088294
2013-04-11

Attenuating non-linear noise in an amplifier with alternating DC-offset correction

#944
20130084799
2013-04-04

Antenna driver circuit for NFC reader applications

#945
20130076438
2013-03-28

Current efficient mixer architecture

#946
20130076434
2013-03-28

Differential source follower having 6dB gain with applications to WiGig baseband filters

#947
20130070870
2013-03-21

Digital pre-distortion filter system and method

#948
20130057346
2013-03-07

Apparatus and method for low noise amplification

#949
20130049845
2013-02-28

Differential integrated input circuit

#950
20130043955
2013-02-21

Signal amplification circuits for receiving/transmitting signals according to input signal

#951
20130043952
2013-02-21

Circuit and method for adjusting an offset output current for an input current amplifier

#952
20130043948
2013-02-21

SEMICONDUCTOR DEVICE FOR SIGNAL AMPLIFICATION

#953
20130043947
2013-02-21

Output circuit

#954
20130043946
2013-02-21

Low noise amplifiers with combined outputs

#955
20130040586
2013-02-14

System and method for improving power efficiency of a transmitter

#956
20130038396
2013-02-14

Radio frequency amplifier in communication system and method of controlling the same

#957
20130029618
2013-01-31

Switchable VRAMP limiter

#958
20130027134
2013-01-31

Switching regulator with variable compensation

#959
20130027133
2013-01-31

Sense amplifiers including bias circuits

#960
20130027007
2013-01-31

Amplifier with multiple zero-pole pairs

#961
20130021099
2013-01-24

Vramp limiting using resistors

#962
20130021082
2013-01-24

Low voltage differential signaling (LVDS) circuitry and method for dynamically controlling common mode voltage at input

#963
20130009705
2013-01-10

Sense amplifier having loop gain control

#964
20130002311
2013-01-03

Transmit driver circuit

#965
20120326754
2012-12-27

High performance pre-mixer buffer in wireless communications systems

#966
20120319782
2012-12-20

Class E power amplifier

#967
20120314795
2012-12-13

High output power digital TX

#968
20120313704
2012-12-13

Differential amplifier stage with integrated offset cancellation circuit

#969
20120306838
2012-12-06

Semiconductor device and electronic apparatus using the same

#970
20120306574
2012-12-06

Wide bandwidth class C amplifier with common-mode feedback

#971
20120294055
2012-11-22

Power detector

#972
20120293267
2012-11-22

Low noise amplifier including a single-ended input

#973
20120293266
2012-11-22

Power amplifiers with improved efficiency over power control

#974
20120293265
2012-11-22

Radio frequency integrated circuit

#975
20120293264
2012-11-22

Power control for linear and class AB power amplifiers

#976
20120293262
2012-11-22

Amplifier

#977
20120293259
2012-11-22

Amplifier

#978
20120286874
2012-11-15

Positive feedback common gate low noise amplifier

#979
20120286869
2012-11-15

Current buffer

#980
20120269296
2012-10-25

Multi-stage receiver

#981
20120269293
2012-10-25

RF transmitter architecture, integrated circuit device, wireless communication unit and method therefor

#982
20120268206
2012-10-25

Negative capacitance synthesis for use with differential circuits

#983
20120268205
2012-10-25

RF power amplifiers with improved efficiency and output power

#984
20120268178
2012-10-25

Fully differential adaptive bandwidth PLL with differential supply regulation

#985
20120262236
2012-10-18

Differential amplifying circuit

#986
20120249247
2012-10-04

Front-end circuit of low supply-voltage memory interface receiver

#987
20120242409
2012-09-27

Analog circuits having improved transistors, and methods therefor

#988
20120242407
2012-09-27

Switched amplifier circuit arrangement and method for switched amplification

#989
20120235745
2012-09-20

Variable gain amplifier

#990
20120220255
2012-08-30

Low noise amplifier (LNA) suitable for use in different transmission environments and receiver using such an LNA

#991
20120218043
2012-08-30

Amplifier activation

#992
20120218041
2012-08-30

Amplifier circuit

#993
20120212259
2012-08-23

COMPARATOR OF A DIFFERENCE OF INPUT VOLTAGES WITH AT LEAST A THRESHOLD

#994
20120207331
2012-08-16

PREAMPLIFIER CIRCUIT AND MICROPHONE HAVING THE SAME

#995
20120206202
2012-08-16

Gain enhancement circuit and method

#996
20120206201
2012-08-16

Semiconductor device

#997
20120178391
2012-07-12

Adjustable circuit architecture

#998
20120176197
2012-07-12

RF power amplifier

#999
20120169422
2012-07-05

Amplifier with non-linear current mirror

#1000
20120161880
2012-06-28

Techniques on input transformer to push the OP1dB higher in power amplifier design

#1001
20120161876
2012-06-28

Accurate bias tracking for process variation and supply modulation

#1002
20120161873
2012-06-28

Differential pair with constant offset

#1003
20120154056
2012-06-21

Method and apparatus for canceling balun amplifier noise

#1004
20120154045
2012-06-21

Push-pull low noise amplifier with variable gain, push-pull low noise amplifier with common gate bias circuit and amplifier with auxiliary matching

#1005
20120146724
2012-06-14

Low-noise amplifier

#1006
20120146718
2012-06-14

High performance input receiver circuit for reduced-swing inputs

#1007
20120139632
2012-06-07

Differential amplifier circuit

#1008
20120139440
2012-06-07

Semiconductor device and electronic apparatus using the same

#1009
20120133437
2012-05-31

Sense amplifier and electronic apparatus using the same

#1010
20120127138
2012-05-24

Output circuit, data driver, and display device

#1011
20120126894
2012-05-24

Differential amplifier

#1012
20120112840
2012-05-10

Semiconductor integrated circuit device

#1013
20120105148
2012-05-03

AMPLIFIER CIRCUIT AND RADIO RECEIVER

#1014
20120103093
2012-05-03

Signal level conversion circuit, physical quantity detection device and electronic apparatus

#1015
20120098606
2012-04-26

High-frequency signal processing device

#1016
20120092072
2012-04-19

Offset compensation for sense amplifiers

#1017
20120064836
2012-03-15

Amplifier circuit for a ranging transceiver

#1018
20120056681
2012-03-08

Signal amplification circuits for receiving/transmitting signals according to input signal

#1019
20120049956
2012-03-01

Amplifiers and related biasing methods and devices

#1020
20120049946
2012-03-01

Equalization circuit

#1021
20120019324
2012-01-26

Amplifier With Improved Input Resistance and Controlled Common Mode

#1022
20120013417
2012-01-19

Center-tapped inductor balun

#1023
20120007676
2012-01-12

Drive amplifier

#1024
20120007675
2012-01-12

Power amplifier

#1025
20120007674
2012-01-12

POWER AMPLIFIER REDUCING GAIN MISMATCH

#1026
20120001697
2012-01-05

Differential amplifier stage with integrated offset cancellation circuit

#1027
20120001696
2012-01-05

Semiconductor integrated circuit device

#1028
20120001675
2012-01-05

Transconductance amplifier

#1029
20110316631
2011-12-29

LNA circuit for use in a low-cost receiver circuit

#1030
20110304395
2011-12-15

POWER AMPLIFIER

#1031
20110299634
2011-12-08

SAW-LESS RECEIVER WITH A FREQUENCY TRANSLATED BPF HAVING A NEGATIVE RESISTANCE

#1032
20110299632
2011-12-08

Saw-less receiver with RF frequency translated BPF

#1033
20110291589
2011-12-01

Multi-input differential amplifier and light emitting element driving device

#1034
20110254626
2011-10-20

Amplification circuit

#1035
20110248783
2011-10-13

Circuit for amplifying a signal representing a variation in resistance of a variable resistance and corresponding sensor

#1036
20110248782
2011-10-13

RF power amplifier

#1037
20110235831
2011-09-29

Drive device

#1038
20110234319
2011-09-29

Differential amplifier circuit

#1039
20110227648
2011-09-22

Silicon-on-insulator high power amplifiers

#1040
20110221532
2011-09-15

Semiconductor integrated circuit device and communication system

#1041
20110221526
2011-09-15

Method and apparatus for a gain control circuit via a high frequency signal

#1042
20110221522
2011-09-15

Sharing of inductor interstage matching in parallel amplification system for wireless communication systems

#1043
20110216617
2011-09-08

Techniques for sensing a semiconductor memory device

#1044
20110210781
2011-09-01

LEVEL SHIFTER

#1045
20110182129
2011-07-28

Sense amplifier having loop gain control

#1046
20110163808
2011-07-07

Amplifier with improved input resistance and controlled common mode

#1047
20110148380
2011-06-23

Circuit and method for adjusting an offset output current for an input current amplifier

#1048
20110147465
2011-06-23

RFID device

#1049
20110141092
2011-06-16

Differential amplifier and control method for the same

#1050
20110140773
2011-06-16

Circuits and methods for calibrating offset in an amplifier

#1051
20110133838
2011-06-09

Low output impedance RF amplifier

#1052
20110130109
2011-06-02

Differential amplifier circuit and wireless receiving apparatus

#1053
20110128079
2011-06-02

MULTI-BAND POWER AMPLIFIER WITH HIGH-FREQUENCY TRANSFORMER

#1054
20110124306
2011-05-26

Current canceling variable gain amplifier and transmitter using same

#1055
20110121903
2011-05-26

Power amplifier

#1056
20110121871
2011-05-26

Transconductance amplifier

#1057
20110115560
2011-05-19

Differential pair with constant offset

#1058
20110109389
2011-05-12

Amplifier circuit, integrated circuit and radio frequency communication unit

#1059
20110102084
2011-05-05

Multi-stage CMOS power amplifier

#1060
20110086603
2011-04-14

Radio frequency tuner

#1061
20110086594
2011-04-14

Providing a temperature dependent bias for a device

#1062
20110081879
2011-04-07

Amplifier circuit and communication device

#1063
20110063050
2011-03-17

SEMICONDUCTOR INTEGRATED CIRCUIT

#1064
20110063032
2011-03-17

Balun amplifier

#1065
20110043254
2011-02-24

Sense amplifier and electronic apparatus using the same

#1066
20110037520
2011-02-17

Multistage amplifying circuit

#1067
20110037518
2011-02-17

Amplifiers with improved linearity and noise performance

#1068
20110025419
2011-02-03

Differential amplifier with offset voltage trimming

#1069
20110025418
2011-02-03

Current to voltage converter

#1070
20110025416
2011-02-03

Differential amplifier

#1071
20110018635
2011-01-27

Multi-mode low noise amplifier with transformer source degeneration

#1072
20110018633
2011-01-27

Operational amplifier having DC offset cancellation capability

#1073
20110018627
2011-01-27

Nested transimpendance amplifier

#1074
20110003572
2011-01-06

Layout techniques for frequency translated filters

#1075
20110001565
2011-01-06

High-speed, multi-stage class AB amplifiers

#1076
20110001562
2011-01-06

High speed linear differential amplifier

#1077
20100329487
2010-12-30

Preamplifier circuit for a microelectromechanical capacitive acoustic transducer

#1078
20100328542
2010-12-30

Low-noise amplifier suitable for use in a television receiver

#1079
20100327975
2010-12-30

Signal amplifier

#1080
20100327944
2010-12-30

Signal buffer amplifier

#1081
20100323655
2010-12-23

Common-gate common-source transconductance stage for RF downconversion mixer

#1082
20100321088
2010-12-23

Electric circuit

#1083
20100311378
2010-12-09

Multiple multi-mode low-noise amplifier receiver with shared degenerative inductors

#1084
20100308915
2010-12-09

Phase margin modification in operational transconductance amplifiers

#1085
20100308914
2010-12-09

Low noise amplifier

#1086
20100308913
2010-12-09

Operational amplifier

#1087
20100301940
2010-12-02

Negative capacitance synthesis for use with differential circuits

#1088
20100295620
2010-11-25

High-speed, multi-stage class AB amplifiers

#1089
20100295594
2010-11-25

Source Follower Attenuator

#1090
20100283545
2010-11-11

Multi-path, multi-stage feed-forward operational amplifier circuit

#1091
20100271128
2010-10-28

Composite differential RF power amplifier layout

#1092
20100259331
2010-10-14

High-linearity low noise amplifier

#1093
20100259319
2010-10-14

Low noise amplifier with combined input matching, balun, and transmit/receive switch

#1094
20100255792
2010-10-07

Adaptive radio transceiver with an antenna matching circuit

#1095
20100248648
2010-09-30

Amplifier circuit and transceiver

#1096
20100244964
2010-09-30

Semiconductor integrated circuit device

#1097
20100238153
2010-09-23

Display device

#1098
20100237942
2010-09-23

Common-gate common-source amplifier

#1099
20100237941
2010-09-23

Wideband RF amplifiers

#1100
20100231305
2010-09-16

Semiconductor device for signal amplification

#1101
20100231299
2010-09-16

Automatic gain control

#1102
20100220828
2010-09-02

Edge-based sampler offset correction

#1103
20100219886
2010-09-02

Broadband low noise amplifier

#1104
20100219885
2010-09-02

Broadband low noise amplifier

#1105
20100213985
2010-08-26

Fast common mode feedback control for differential driver

#1106
20100188152
2010-07-29

Signal conversion circuit and rail-to-rail circuit

#1107
20100182301
2010-07-22

Operational amplifier, semiconductor device, and display device

#1108
20100182089
2010-07-22

Method and system for processing signals via an integrated low noise amplifier having configurable input signaling mode

#1109
20100176882
2010-07-15

Transconductance amplifier with a filter for rejecting noise outside the useful band

#1110
20100176849
2010-07-15

Closed loop surge protection technique for differential amplifiers

#1111
20100171556
2010-07-08

Differential amplifier with a feedback unit

#1112
20100171554
2010-07-08

Offset cancellation for DC isolated nodes

#1113
20100164628
2010-07-01

Distributed active transformer amplifier with differential power combiner

#1114
20100164599
2010-07-01

Semiconductor device and electronic apparatus using the same

#1115
20100156538
2010-06-24

Amplifier circuit and radio receiver

#1116
20100148871
2010-06-17

Systems and methods for an adaptive bias circuit for a differential power amplifier

#1117
20100141341
2010-06-10

Receiver having multi-stage low noise amplifier

#1118
20100134173
2010-06-03

Integrator-based common-mode stabilization technique for pseudo-differential switched-capacitor circuits

#1119
20100127736
2010-05-27

Low voltage differential signaling driver with programmable on-chip resistor termination

#1120
20100123521
2010-05-20

Process, voltage and temperature control for high-speed, low-power fixed and variable gain amplifiers based on MOSFET resistors

#1121
20100117737
2010-05-13

RF power amplifier

#1122
20100117735
2010-05-13

Circuit

#1123
20100097146
2010-04-22

Signal amplification circuit

#1124
20100090725
2010-04-15

Sense-amplifier control circuit and controlling method of sense amplifier

#1125
20100085100
2010-04-08

Low-power clock generation and distribution circuitry

#1126
20100073083
2010-03-25

Nested transimpedance amplifier

#1127
20100066577
2010-03-18

Delta-sigma analog-to-digital converter

#1128
20100066450
2010-03-18

High-Speed Low-Power Differential Receiver

#1129
20100061481
2010-03-11

Current canceling variable gain amplifier and transmitter using same

#1130
20100052966
2010-03-04

Differential amplifier and data driver employing the differential amplifier

#1131
20100052794
2010-03-04

Method and system for improving efficiency over power control for linear and class AB power amplifiers

#1132
20100052787
2010-03-04

Limiting amplifiers

#1133
20100052777
2010-03-04

High performance input receiver circuit for reduced-swing inputs

#1134
20100045381
2010-02-25

Limiting amplifiers

#1135
20100045379
2010-02-25

Amplifier and the method thereof

#1136
20100044835
2010-02-25

Setting the DC operating current of a rail-to-rail output stage of an op-amp

#1137
20100019848
2010-01-28

Complementary low noise transductor with active single ended to differential signal conversion

#1138
20100013556
2010-01-21

Transconductance amplifier

#1139
20090322429
2009-12-31

Variable gain current input amplifier and method

#1140
20090322420
2009-12-31

Feedback biasing technique for a stage of an amplifier that uses a feedback control loop having low gain

#1141
20090315625
2009-12-24

Method and system for processing signals via an integrated low noise amplifier having configurable input signaling mode

#1142
20090295486
2009-12-03

Operational amplifier having adjustable bias current and related source driver of display thereof

#1143
20090295481
2009-12-03

High speed differential to single ended converting circuit

#1144
20090289930
2009-11-26

Operational amplifier circuit and display panel driving apparatus

#1145
20090289715
2009-11-26

Amplifier with improved linearization

#1146
20090284284
2009-11-19

Sense amplifier and electronic apparatus using the same

#1147
20090278602
2009-11-12

Closed loop surge protection technique for differential amplifiers

#1148
20090267639
2009-10-29

Input cancellation circuit

#1149
20090256636
2009-10-15

Amplifier arrangement and method for signal amplification

#1150
20090251216
2009-10-08

Common mode control circuitry for multi-stage operational amplifiers

#1151
20090251214
2009-10-08

Rail-to-rail operational amplifier

#1152
20090212861
2009-08-27

Low noise amplifier

#1153
20090207939
2009-08-20

System and method for burst mode amplifier

#1154
20090206931
2009-08-20

Differential amplifier and applications thereof

#1155
20090206806
2009-08-20

Voltage comparison circuit, and semiconductor integrated circuit and electronic device having the same

#1156
20090203315
2009-08-13

Detector, RF circuit with detector, and mobile device with RF circuit

#1157
20090195306
2009-08-06

Switched-capacitor circuit having switch-less feedback path

#1158
20090191838
2009-07-30

Mode-switching low-noise amplifier and wide-band RF receiver

#1159
20090189697
2009-07-30

Auto-tuning amplifier

#1160
20090184767
2009-07-23

Operational amplifier

#1161
20090167439
2009-07-02

Amplifier and the method thereof

#1162
20090167407
2009-07-02

Operational amplifier and integrating circuit

#1163
20090153247
2009-06-18

High-speed, multi-stage class AB amplifiers

#1164
20090153219
2009-06-18

Replica bias circuit for high speed low voltage common mode driver

#1165
20090140812
2009-06-04

High-linearity complementary amplifier

#1166
20090137208
2009-05-28

Transmitter and receiver using asymmetric transfer characteristics in differential amplifiers to suppress noise

#1167
20090135524
2009-05-28

Magnetic head driving circuit with protection function

#1168
20090124219
2009-05-14

High linearity, high efficiency power amplifier with DSP assisted linearity optimization

#1169
20090115461
2009-05-07

Current converting method, transconductance amplifier and filter circuit using the same

#1170
20090108943
2009-04-30

Low noise amplifier

#1171
20090102561
2009-04-23

Amplifier having an output protection, in particular operational amplifier for audio application

#1172
20090096533
2009-04-16

Adaptively tuned RF power amplifier

#1173
20090096490
2009-04-16

Transconductor

#1174
20090072908
2009-03-19

Gain control circuit and optical recording and reproducing device using thereof

#1175
20090072903
2009-03-19

Variable gain amplifier having variable gain DC offset loop

#1176
20090058529
2009-03-05

Resistively loaded single stage differential amplifier having zero volt common mode input

#1177
20090054017
2009-02-26

Signal amplifier structure for radio transmitter

#1178
20090051433
2009-02-26

Differential sensing with high common mode rejection

#1179
20090051424
2009-02-26

Active circuits with load linearization

#1180
20090045865
2009-02-19

Square-function circuit

#1181
20090040165
2009-02-12

Amplifying circuit and display unit

#1182
20090027123
2009-01-29

Controlled transconductance differential stage

#1183
20090027112
2009-01-29

CONTROLLABLE PRECISION TRANSCONDUCTANCE

#1184
20090021284
2009-01-22

Low voltage differential signal receiver

#1185
20090009236
2009-01-08

Step-down circuit with stabilized output voltage

#1186
20080315950
2008-12-25

Integrated Circuit Amplifiers Having Switch Circuits Therein that Provide Reduced 1/f Noise

#1187
20080303595
2008-12-11

Amplifying circuit

#1188
20080297252
2008-12-04

Differential signal generator circuit

#1189
20080297250
2008-12-04

Integrated circuit system for controlling amplifier gain

#1190
20080290966
2008-11-27

Adaptive radio transceiver with filtering

#1191
20080284634
2008-11-20

Differential amplifying circuit

#1192
20080284536
2008-11-20

Dual mode power amplifier

#1193
20080284517
2008-11-20

Variable gain amplifier

#1194
20080284512
2008-11-20

Power amplifier circuitry and method

#1195
20080278238
2008-11-13

Variable gain circuit

#1196
20080273106
2008-11-06

Class AB amplifier and imagers and systems using same

#1197
20080272849
2008-11-06

Active baluns

#1198
20080272848
2008-11-06

Nested transimpedance amplifier

#1199
20080272846
2008-11-06

Adaptive biasing input stage and amplifiers including the same

#1200
20080272839
2008-11-06

Operation amplifier and circuit for providing dynamic current thereof