ADS1120-Q1
- AEC-Q100 qualified for automotive applications
- Temperature grade 1: –40°C to +125°C, TA
- Functional Safety-Capable
- Wide supply range: 2.3 V to 5.5 V
- Programmable gain: 1 V/V to 128 V/V
- Programmable data rates: 5 SPS to 2 kSPS
- 16-bit, noise-free resolution at 20 SPS
- Simultaneous 50-Hz and 60-Hz rejection at
20 SPS with single-cycle settling digital filter - Two differential or four single-ended inputs
- Dual-matched programmable current sources:
50 µA to 1.5 mA - Internal 2.048-V reference: 5 ppm/°C (typ) drift
- Internal 2% accurate oscillator
- Internal temperature sensor:
0.5°C (typ) accuracy - SPI-compatible interface (mode 1)
The ADS1120-Q1 is a precision, 16-bit, analog-to-digital converter (ADC) that offers many integrated features to reduce system cost and component count in applications measuring small sensor signals. The device features two differential or four single-ended inputs through a flexible input multiplexer (MUX), a low-noise, programmable gain amplifier (PGA), two programmable excitation current sources, a voltage reference, an oscillator, a low-side switch, and a precision temperature sensor.
The device can perform conversions at data rates up to 2000 samples-per-second (SPS) with single-cycle settling. At 20 SPS, the digital filter offers simultaneous 50-Hz and 60-Hz rejection for noisy industrial applications. The internal PGA offers gains up to 128 V/V. This PGA makes the ADS1120-Q1 ideally-suited for applications measuring small sensor signals, such as resistance temperature detectors (RTDs), thermocouples, thermistors, and bridge sensors. The device supports measurements of pseudo- or fully-differential signals when using the PGA. Alternatively, the device can be configured to bypass the internal PGA while still providing high input impedance and gains up to 4 V/V, allowing for single-ended measurements.
Power consumption is as low as 120 µA when operating in duty-cycle mode with the PGA disabled. Communication to the device is established through a mode 1 SPI-compatible interface. The ADS1120-Q1 is offered in a TSSOP-16 package and is specified over a temperature range of –40°C to +125°C.
技術文件
類型 | 標題 | 日期 | ||
---|---|---|---|---|
* | Data sheet | ADS1120-Q1 Automotive, 4-Channel, 2-kSPS, Low-Power, 16-Bit ADC With Integrated PGA and Reference datasheet (Rev. B) | PDF | HTML | 2020年 5月 15日 |
Application note | Calculating Conversion Latency and System Cycle Time for Delta-Sigma ADCs (Rev. A) | PDF | HTML | 2024年 3月 18日 | |
Application note | A Basic Guide to Bridge Measurements (Rev. A) | PDF | HTML | 2024年 3月 13日 | |
Application note | Digital Filter Types in Delta-Sigma ADCs (Rev. A) | PDF | HTML | 2023年 3月 29日 | |
Application note | RTD Ratiometric Measurements and Filtering Using the ADS1148 and ADS1248 (Rev. A) | PDF | HTML | 2023年 3月 27日 | |
E-book | Fundamentals of Precision ADC Noise Analysis | 2020年 6月 19日 | ||
Functional safety information | ADS1120-Q1 Functional Safety FIT Rate, FMD and Pin FMA | 2020年 4月 24日 | ||
Analog Design Journal | How delta-sigma ADCs work, Part 1 (Rev. A) | 2016年 9月 19日 | ||
E-book | Best of Baker's Best: Precision Data Converters -- Delta-Sigma ADCs | 2015年 3月 19日 | ||
Analog Design Journal | How delta-sigma ADCs work, Part 2 | 2011年 11月 9日 |
設計與開發
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ADS1120EVM — ADS1120 評估模組
The ADS1120 evaluation module (EVM) is an evaluation system for the ADS1120, a 16-bit, multichannel, delta-sigma analog-to-digital converter (ADC). The EVM uses the ADS1120 along with minimal circuitry to demonstrate functionality for prototyping and part evaluation. The pins of the ADS1120 (...)
ANALOG-ENGINEER-CALC — PC software analog engineer's calculator
The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)
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PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
TINA-TI — 基於 SPICE 的類比模擬程式
封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
---|---|---|
TSSOP (PW) | 16 | Ultra Librarian |
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