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AMC1203DWR Datasheet(PDF) 1 Page - Texas Instruments |
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AMC1203DWR Datasheet(HTML) 1 Page - Texas Instruments |
1 / 29 page Output Buffer V REF + - + - MDAT MCLK Output Buffer V REF + - + - POR BIAS POR IsolationBarrier 2nd-Order DS Modulator 20MHz RC Oscillator V IN+ V IN- Buffer 2.5V V REF AMC1203 www.ti.com SBAS427C – FEBRUARY 2008 – REVISED JUNE 2011 1-Bit, 10MHz, 2nd-Order, Isolated Delta-Sigma Modulator Check for Samples: AMC1203 1 FEATURES DESCRIPTION The AMC1203 is a 1-bit, 10MHz, isolated delta-sigma 2 • 16-Bit Resolution ( ΔΣ) modulator with an output buffer separated from • SNR: 80.5dB min the input interface circuitry by a silicon dioxide (SiO2) • THD: –88dB max (AMC1203B) isolation barrier. This barrier provides galvanic • ±280mV Input Range with +5V Supply isolation of up to 4000VPEAK. Used in conjunction with isolated power supplies, these devices prevent noise • Internal 2.5V Reference Voltage: 1% Accuracy currents on a data bus or other circuits from entering • Gain Error: ±1% (AMC1203B) the local ground and interfering with or damaging • UL1577, IEC60747-5-2 (VDE0884, Rev. 2), and sensitive circuitry. IEC61010-1 Approved The AMC1203 modulator operates from a +5V supply – Isolation: 4000VPEAK, with a dynamic range of 95dB. The differential inputs Working Voltage: 560V are ideal for direct connection to shunt resistors or – Transient Immunity: 15kV/μs other low-level signal sources. With the appropriate • Typical 25-Year Life at Rated Working Voltage digital filter and modulator rate, the device can be (see Application Report SLLA197) used to achieve 16-bit analog-to-digital (A/D) • Specified Temperature Range: conversion with no missing codes. An effective –40°C to +105°C resolution of 14 bits and an SNR of 85dB (typical) can be maintained with a sinc3 filter with a decimation APPLICATIONS ratio of 256. • Shunt Based Current Sensing in: The modulator output is translated to a balanced signal and then transferred by the capacitive isolation – Motor Control barrier. Across the isolation barrier, a differential – Uninterruptible Power Supplies comparator receives the logic transition information, – Power Inverters and then sets or resets a flip-flop and the output – Industrial Process Control circuit accordingly. The AMC1203 is available in SOP-8 gull-wing, SOP-8, and SOIC-16 packages. The AMC1203 is characterized for operation over the ambient temperature range of –40°C to +105°C. 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2008–2011, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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