AMC1035-Q1
Automotive precision delta-sigma modulator with ±1-V bipolar input and 2.5-V reference output
AMC1035-Q1
- AEC-Q100 qualified for automotive applications:
- Temperature grade 1: –40°C to +125°C, TA
- Delta-sigma modulator optimized for voltage and temperature sensing:
- Input voltage range: ±1 V
- High differential input resistance: 1.6 GΩ (typ)
- Integrated 2.5-V, ±5-mA reference for ratiometric measurement
- Excellent DC performance:
- Offset error: ±0.5 mV (max)
- Offset drift: ±6 µV/°C (max)
- Gain error: ±0.25% (max)
- Gain drift: ±45 ppm/°C (max)
- Ratiometric gain drift: ±15 ppm/°C (max)
- Selectable Manchester encoded or uncoded bitstream output
The AMC1035-Q1 is a precision, delta-sigma (ΔΣ) modulator that operates from a single 3.0-V to 5.5-V supply and with an externally supplied clock signal in the range of 9 MHz to 21 MHz. In Manchester mode, the specified clock range is 9 MHz to 11 MHz. The differential ±1-V input structure of the device is optimized for voltage and temperature sensing applications.
Select the output bitstream of the AMC1035-Q1 to be Manchester coded to prevent setup and hold time requirement considerations of the receiving device and to reduce overall circuit layout efforts. When used with a digital filter (such as integrated in the TMS320F28004x, TMS320F2807x, or TMS320F2837x microcontroller families) to decimate the output bitstream, the device can achieve 16 bits of resolution with a dynamic range of 87 dB at a data rate of 82 kSPS.
The internal reference source of the AMC1035-Q1 supports a ratiometric circuit architecture to minimize the negative impact of the supply voltage variation and temperature drift on the accuracy of the measurement.
The AMC1035-Q1 can also be used for high common-mode AC voltage sensing with a digital isolator and isolated power supply.
Technical documentation
Design & development
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AMC1035EVM — AMC1035 evaluation module
The AMC1035 evaluation module (EVM) is a platform for evaluating the AMC1035, which is a single-channel delta-sigma modulator designed for voltage, current, and temperature sensing. AMC1035EVM allows the user to explore all of the features of the AMC1035.
ANALOG-ENGINEER-CALC — Analog engineer's calculator
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
TINA-TI — SPICE-based analog simulation program
Package | Pins | CAD symbols, footprints & 3D models |
---|---|---|
SOIC (D) | 8 | Ultra Librarian |
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