AMC1203 - 1 位 10MHz 2 阶隔离式 Δ-Σ 调制器

AMC1203是TI德州仪器公司的一款隔离式ADC产品，AMC1203是1 位 10MHz 2 阶隔离式 Δ-Σ 调制器，本站介绍了AMC1203的封装应用图解、特点和优点、功能等，并给出了与AMC1203相关的TI元器件型号供参考。

AMC1203 - 1 位 10MHz 2 阶隔离式 Δ-Σ 调制器 - 隔离式ADC - 模数转换器 - 德州仪器

产品描述

The AMC1203 is a 1-bit, 10MHz, isolated delta-sigma (ΔΣ) 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 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.

产品特性

16-Bit Resolution
SNR: 80.5dB min
THD: –88dB max (AMC1203B)
±280mV Input Range with +5V Supply
Internal 2.5V Reference Voltage: 1% Accuracy
Gain Error: ±1% (AMC1203B)
UL1577, IEC60747-5-2 (VDE0884, Rev. 2), and IEC61010-1 Approved
- Isolation: 4000VPEAK, Working Voltage: 560V
- Transient Immunity: 15kV/µs
Typical 25-Year Life at Rated Working Voltage (see Application Report SLLA197)
Specified Temperature Range: –40°C to +105°C
APPLICATIONS
- Shunt Based Current Sensing in:
  - Motor Control
  - Uninterruptible Power Supplies
  - Power Inverters
  - Industrial Process Control

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