1-bit, 10mhz, 2nd-order, Isolated Delta-sigma Modulator

  The AMC1203 is a 1-bit, 10MHz, isolated delta-sigma (?) Modulator with an output Buffer separated from the input Interface circuitry by a silicon dioxide (SiO2) isolation barrier. This barrier provides galvanic isolation of up to 4000VPEAK. Used in conjunction with isolated power supplies, these devices prevent noise currents on a data bus or other Circuits from entering the local ground and interfering with or damaging sensitive circuitry. The AMC1203 Modulator operates from a +5V supply with a dynamic range of 95dB. The differential inputs are ideal for direct connection to shunt Resistors or other low-level signal sources. With the appropriate digital Filter and Modulator rate, the device can be used to achieve 16-bit analog-to-digital (A/D) conversion with no missing codes. An effective resolution of 14 bits and an SNR of 85dB (typical) can be maintained with a sinc3 Filter with a decimation ratio of 256. The Modulator output is translated to a balanced signal and then transferred by the capacitive isolation barrier. Across the isolation barrier, a differential Comparator receives the logic transition information, and then sets or resets a Flip-Flop and the output circuit accordingly. The AMC1203 is available in an SO-8 gull-wing package. SO-8 and SO-16 packages are planned for release in 2008. The AMC1203 is characterized for operation over the ambient temperature range of ?40?C to +105?C.
Item: AMC1203
File Size : 71 KB
Pages : 23 Pages

Other Part Numbers in this pdf file

AMC1203PSAR   AMC1203PSA   AMC1203DWR   AMC1203DW   AMC1203DUBRG4   AMC1203DUBR   AMC1203DUBG4   AMC1203DUB   AMC1203BPSAR   AMC1203BPSA   AMC1203BDUBRG4   AMC1203BDUBR   AMC1203BDUBG4   AMC1203BDUB  
Texas Instruments Incorporated
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