AMC1035-Q1 Texas instruments

AMC1035-Q1

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AMC1035-Q1

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Описание

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.

AEC-Q100 qualified for automotive applications:
- Temperature grade 1: –40°C to +125°C, T_A
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

Resolution (Bits)	16
Sample rate (max) (ksps)	20
Number of input channels	1
Interface type	Serial
Architecture	Delta-Sigma Modulator
Input type	Differential
Rating	Automotive
Reference mode	Internal
Input voltage range (max) (V)	1
Input voltage range (min) (V)	-1
Operating temperature range (°C)	-40 to 125
Power consumption (typ) (mW)	27
Analog supply (min) (V)	3
Analog supply voltage (max) (V)	5.5
SNR (dB)	86
Digital supply (min) (V)	3
Digital supply (max) (V)	5.5