Calculation tool
AMC1035
Precision delta-sigma modulator with ±1-V bipolar input and 2.5-V reference output
Data sheet
AMC1035
- Delta-sigma modulator optimized for voltage and temperature sensing:
- ±1-V input voltage range
- 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
- Fully specified over the extended industrial temperature range: –40°C to +125°C
The AMC1035 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 high noise environments typical for industrial applications.
Select the output bitstream of the AMC1035 to be Manchester coded to prevent setup and hold time requirement considerations of the receiving device and 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 supports ratiometric circuit architecture to minimize the negative impact of the supply voltage variation and temperature drift on the accuracy of the measurement.
The AMC1035 can also be used for AC power line voltage sensing with a digital isolator and isolated power supply.
Technical documentation
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View all 9 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | AMC1035 Delta-Sigma Modulator With Bipolar Input of ±1 V and Reference Output of 2.5 V datasheet (Rev. B) | PDF | HTML | 09 Apr 2020 |
| White paper | Vergleich isolierter Verstärker und isolierter Modulatoren (Rev. B) | PDF | HTML | 19 Aug 2024 | |
| White paper | 절연 증폭기와 절연 모듈레이터 비교 (Rev. B) | PDF | HTML | 19 Aug 2024 | |
| Application brief | HEV/EV의 션트 및 홀 기반 절연 전류 감지 솔루션 비교 (Rev. C) | PDF | HTML | 16 Jul 2024 | |
| Application brief | Vergleich von isolierten Shunt- und Hall-basierten Strommesslösungen in Hybrid- und Elektrofahrzeugen (Rev. C) | PDF | HTML | 16 Jul 2024 | |
| White paper | Comparing Isolated Amplifiers and Isolated Modulators (Rev. B) | PDF | HTML | 04 Jun 2024 | |
| Application note | Digital Filter Types in Delta-Sigma ADCs (Rev. A) | PDF | HTML | 29 Mar 2023 | |
| Application brief | Comparing shunt- and hall-based isolated current-sensing solutions in HEV/EV (Rev. C) | PDF | HTML | 28 Mar 2023 | |
| EVM User's guide | AMC1035EVM User's Guide | PDF | HTML | 27 Jul 2018 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
Evaluation board
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.
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| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| SOIC (D) | 8 | Ultra Librarian |
Ordering & quality
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