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The ADS1158 is a 16-channel (multiplexed), low-noise, 16-bit, delta-sigma (ΔΣ) analog-to-digital converter (ADC) that provides single-cycle settled data at channel scan rates from 1.8k to 23.7k samples per second (SPS) per channel. A flexible input multiplexer accepts combinations of eight differential or 16 single-ended inputs with a full-scale differential range of 5V or true bipolar range of ±2.5V when operating with a 5V reference. The fourth-order delta-sigma modulator is followed by a fifth-order sinc digital filter optimized for low-noise performance.
The differential output of the multiplexer is accessible to allow signal conditioning before the input of the ADC. Internal system monitor registers provide supply voltage, temperature, reference voltage, gain, and offset data.
An onboard PLL generates the system clock from a 32.768kHz crystal, or can be overridden by an external clock source. A buffered system clock output (15.7MHz) is provided to drive a microcontroller or additional converters.
Serial digital communication is handled via an SPI™-compatible interface. A simple command word structure controls channel configuration, data rates, digital I/O, monitor functions, etc.
Programmable sensor bias current sources can be used to bias sensors or verify sensor integrity.
The ADS1158 operates from a unipolar +5V or bipolar ±2.5V analog supply and a digital supply compatible with interfaces ranging from 2.7V to 5.25V. The ADS1158 is available in a QFN-48 package.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | 16-Channel, 16-Bit Analog-to-Digital Converter datasheet (Rev. D) | Mar 17, 2011 | |
| Application note | Calculating Conversion Latency and System Cycle Time for Delta-Sigma ADCs (Rev. A) | PDF | HTML | Mar 18, 2024 | |
| Application note | A Basic Guide to Bridge Measurements (Rev. A) | PDF | HTML | Mar 13, 2024 | |
| Application note | QFN and SON PCB Attachment (Rev. C) | PDF | HTML | Dec 6, 2023 | |
| Application note | Digital Filter Types in Delta-Sigma ADCs (Rev. A) | PDF | HTML | Mar 29, 2023 | |
| E-book | Fundamentals of Precision ADC Noise Analysis (Rev. A) | Jun 19, 2020 | ||
| Analog design Journal | How delta-sigma ADCs work, Part 1 (Rev. A) | Sep 19, 2016 | ||
| E-book | Best of Baker's Best: Precision Data Converters -- Delta-Sigma ADCs | Mar 19, 2015 | ||
| Application note | ADS1258, ADS1258-EP, and ADS1158 SPI™ Timeout Function | Apr 20, 2012 | ||
| Analog design Journal | How delta-sigma ADCs work, Part 2 | Nov 9, 2011 |
For additional terms or required resources, click any title below to view the detail page where available.
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 (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VQFNP (RTC) | 48 | Ultra Librarian |
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