| Patent Number |
Title Of Patent |
Date Issued |
| 7605646 |
Low glitch offset correction circuit for auto-zero sensor amplifiers and method |
October 20, 2009 |
| An instrumentation amplifier includes first (11A) and second (12A) input amplifiers having outputs (15A,B) coupled to an output amplifier (13). A first auto-zero stage (20) in the first input amplifier is auto-zeroed to a first voltage level (V.sub.REFL), a first input signal (Vin.sup.+) |
| 7554517 |
Method and apparatus for setting gamma correction voltages for LCD source drivers |
June 30, 2009 |
| A gamma reference voltage generator (10B) for an LCD display includes a control interface logic circuit (48) having an output bus coupled to inputs of a first register (46) having outputs coupled to inputs of a second register (42) the outputs of which are coupled to corresponding in |
| 7524109 |
Systems and methods for resistance compensation in a temperature measurement circuit |
April 28, 2009 |
| Various systems and methods for temperature measurement are disclosed. For example, some embodiments of the present invention provide methods for temperature measurement that include exciting a provided transistor with at least four sequential input signals of different magnitudes. In |
| 7511648 |
Integrating/SAR ADC and method with low integrator swing and low complexity |
March 31, 2009 |
| A reconfigurable circuit (10) includes an integrator (30) having switches (SW1-6) for selectively coupling input capacitors (C0,1,2,3,6,7) and integrating capacitors (C4,5) to terminals of the integrator (30) for operation of a hybrid delta-sigma/SAR ADC (400) so as to create a refer |
| 7504977 |
Hybrid delta-sigma/SAR analog to digital converter and methods for using such |
March 17, 2009 |
| Various systems and methods for capturing data are disclosed. For example, some embodiments of the present invention provide methods for performing a first analog to digital conversion using a delta-sigma based analog to digital converter, and performing a second analog to digital conver |
| 7501970 |
Digital to analog converter architecture and method having low switch count and small output imp |
March 10, 2009 |
| A digital to analog converter includes a coarse resolution resistor circuit (11) coupled between a first voltage (Vin) and an intermediate voltage (V0) to produce coarse resolution node voltages (V0, . . . V240), and also includes a fine resolution resistor circuit (20) coupled between |
| 7495589 |
Circuit and method for gain error correction in ADC |
February 24, 2009 |
| Gain errors are corrected in an ADC chip including an integrator (17), a comparator (30), and a digital filter (37) by storing a gain-adjusted LSB size based on measured gain error in a memory (44). The gain-adjusted LSB size is applied to the digital filter to cause gain-adjusted LSB si |
| 7380185 |
Reduced pin count scan chain implementation |
May 27, 2008 |
| The synchronous logic device with reduced pin count scan chain includes: more than two flip/flops coupled to form a shift register for receiving a scan data input signal; a combinational logic circuit for receiving device inputs, generating flip/flop inputs for the more than two flip |
| 6844775 |
Operational amplifier with adjustable input offset |
January 18, 2005 |
| An operational amplifier having an adjustable input offset is provided that can improve dynamic performance by allowing processing of the input signal in continuous-time. The amplifier circuit comprises an input source and an operational amplifier configured with an adjustable input offs |
| 6801075 |
Method and circuit for base current compensation |
October 5, 2004 |
| A base current compensation circuit is configured for injecting base current to the base of a transistor device to compensate for the lost current demanded by a transistor base. The base current compensation circuit is configured to inject current into the base of the transistor with |
| 6667650 |
Current leakage compensation circuit and method |
December 23, 2003 |
| A leakage compensation circuit and technique is provided that compensates for losses in a referenced current of an amplifier circuit due to leakage elements. The leakage compensation circuit is configured to inject current substantially equal in magnitude to the leakage current into one |
| 6255807 |
Bandgap reference curvature compensation circuit |
July 3, 2001 |
| A temperature curvature compensation technique and circuit can be realized through the generation of a temperature curvature compensation voltage provided by measuring the difference between the base-emitter voltage V.sub.be of two different transistors operating at two different tem |
| 6060874 |
Method of curvature compensation, offset compensation, and capacitance trimming of a switched ca |
May 9, 2000 |
| Curvature in a reference voltage produced by a switched capacitor band gap reference circuit is compensated by producing a first .DELTA.V.sub.BE voltage by causing first and second PTAT/R currents to flow through a first .DELTA.V.sub.BE -generating circuit. The first .DELTA.V.sub.BE |
