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Class Information
Number: 330/252
Name: Amplifiers > With semiconductor amplifying device (e.g., transistor) > Including differential amplifier
Description: Subject matter including an amplifier having two similar input circuits so connected that they respond to the difference between two voltages or currents, but effectively suppress like voltages or currents.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6066987 |
Differential cascode magneto-resistance preamplifier with bias bypass |
May. 23, 2000 |
| 6064261 |
Write amplifier with improved switching performance, output common-mode voltage, and head current control |
May. 16, 2000 |
| 6060956 |
Variable capacitance circuit |
May. 9, 2000 |
| 6054897 |
Differential amplifier constituted of bipolar transistors |
Apr. 25, 2000 |
| 6046639 |
Amplifier/oscillator circuit with common-emitter amplifier and differential amplifier |
Apr. 4, 2000 |
| 6046638 |
Receive amplifier for reception of high-speed data signals |
Apr. 4, 2000 |
| 6031424 |
Differential amplifier with improved voltage gain using operational amplifiers to eliminate diode voltage drops |
Feb. 29, 2000 |
| 6028478 |
Converter circuit and variable gain amplifier with temperature compensation |
Feb. 22, 2000 |
| 6018262 |
CMOS differential amplifier for a delta sigma modulator applicable for an analog-to-digital converter |
Jan. 25, 2000 |
| 6016077 |
System for user programmable bandwidth of amplifier circuitry |
Jan. 18, 2000 |
| 6011435 |
Transmission-line loss equalizing circuit |
Jan. 4, 2000 |
| 6008701 |
Quadrature oscillator using inherent nonlinearities of impedance cells to limit amplitude |
Dec. 28, 1999 |
| 5999050 |
Differential amplifier, an integrated circuit, and a telephone |
Dec. 7, 1999 |
| 5999049 |
Differential amplifier circuit having non-linerity cancellation feature |
Dec. 7, 1999 |
| 5994959 |
Linearized amplifier core |
Nov. 30, 1999 |
| 5990740 |
Differential amplifier with adjustable linearity |
Nov. 23, 1999 |
| 5977827 |
Circuit arrangement including a differential amplifier stage |
Nov. 2, 1999 |
| 5973561 |
Differential clamp for amplifier circuits |
Oct. 26, 1999 |
| 5973562 |
Amplifier stage with constant input impedance |
Oct. 26, 1999 |
| 5969568 |
Power output element of an amplifier/transmitter |
Oct. 19, 1999 |
| 5966046 |
Large swing wide band programmable active filter |
Oct. 12, 1999 |
| 5963092 |
High dynamic range low noise transconductance amplifier |
Oct. 5, 1999 |
| 5942939 |
Amplifier and method of canceling distortion by combining hyperbolic tangent and hyperbolic sine transfer functions |
Aug. 24, 1999 |
| 5939940 |
Low noise preamplifier for a magnetoresistive data transducer |
Aug. 17, 1999 |
| 5939922 |
Input circuit device with low power consumption |
Aug. 17, 1999 |
| 5936475 |
High-speed ring oscillator |
Aug. 10, 1999 |
| 5936465 |
Bipolar OTA using multitail cell |
Aug. 10, 1999 |
| 5933056 |
Single pole current mode common-mode feedback circuit |
Aug. 3, 1999 |
| 5920111 |
CMOS OP-AMP circuit using BJT as input stage |
Jul. 6, 1999 |
| 5917377 |
Differential amplifier circuit |
Jun. 29, 1999 |
| 5913181 |
Circuit for providing a switch signal to trigger changer in a digital potentiometer |
Jun. 15, 1999 |
| 5912587 |
Active filter stack |
Jun. 15, 1999 |
| 5912582 |
BiCMOS transconductor stage for high-frequency filters |
Jun. 15, 1999 |
| 5907260 |
Differential amplifying circuit |
May. 25, 1999 |
| 5903185 |
Hybrid differential pairs for flat transconductance |
May. 11, 1999 |
| 5900779 |
Differential transimpedance amplifier |
May. 4, 1999 |
| 5896062 |
Amplifier with switched DC bias voltage feedback |
Apr. 20, 1999 |
| 5894234 |
Differential comparator with fixed and controllable hysteresis |
Apr. 13, 1999 |
| 5886577 |
Apparatus for efficient current amplification |
Mar. 23, 1999 |
| 5880639 |
Amplification circuit |
Mar. 9, 1999 |
| 5880636 |
Input stage for operational amplifier utilizing phase delay of active load current mirror to achieve improved bandwidth and phase margin |
Mar. 9, 1999 |
| 5872483 |
Hyperbolic sine and cosine functional circuits, squaring circuit, and OTA consisting of two differential circuits with a dynamic bias current |
Feb. 16, 1999 |
| 5859566 |
Electronic circuit comprising complementary transconductors for filters and oscillators |
Jan. 12, 1999 |
| 5847605 |
Folded active filter |
Dec. 8, 1998 |
| 5838197 |
High-gain amplifier circuit having voltage/current converter |
Nov. 17, 1998 |
| 5831327 |
Differential circuit with a dynamic bias current for producing an exponential or a square-law transfer characteristic |
Nov. 3, 1998 |
| 5831784 |
Pseudo differential voltage sense MR preamplifier with improved bandwidth |
Nov. 3, 1998 |
| 5822104 |
Digital optical receiving apparatus |
Oct. 13, 1998 |
| 5818300 |
Variable gain amplifier circuit with reduced power requirements |
Oct. 6, 1998 |
| 5815039 |
Low-voltage bipolar OTA having a linearity in transconductance over a wide input voltage range |
Sep. 29, 1998 |
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