ADS1258
- 24 Bits, No Missing Codes
- Fixed-Channel or Automatic Channel Scan
- Fixed-Channel Data Rate: 125kSPS
- Auto-Scan Data Rate: 23.7kSPS/Channel
- Single-Conversion Settled Data
- 16 Single-Ended or 8 Differential Inputs
- Unipolar (+5V) or Bipolar (±2.5V) Operation
- Low Noise: 2.8µVRMS at 1.8kSPS
- 0.0003% Integral Nonlinearity
- DC Stability (typical):
0.02µV/°C Offset Drift, 0.4ppm/°C Gain Drift - Open-Sensor Detection
- Conversion Control Pin
- Multiplexer Output for External Signal Conditioning
- On-Chip Temperature, Reference, Offset, Gain, and Supply Voltage Readback
- 42mW Power Dissipation
- Standby, Sleep, and Power-Down Modes
- 8 General-Purpose Inputs/Outputs (GPIO)
- 32.768kHz Crystal Oscillator or External Clock
- APPLICATIONS
- Medical, Avionics, and Process Control
- Machine and System Monitoring
- Fast Scan Multi-Channel Instrumentation
- Industrial Systems
- Test and Measurement Systems
SPI is a trademark of Motorola, Inc.
All other trademarks are the property of their respective owners.
The ADS1258 is a 16-channel (multiplexed), low-noise, 24-bit, delta-sigma () 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 prior to 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 ADS1258 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 ADS1258 is available in a QFN-48 package.
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ADS1258EVM-PDK — ADS1258 性能演示套件
ADS1258 评估模块 (EVM) 性能演示套件 (PDK) 充当 ADS1258 模数转换器 (ADC) 的评估平台。ADS1258 是一款适用于高速、高通道数工业应用的 125kSPS、16 通道、24 位 Δ-Σ ADC。
该 PDK 包括 ADS1258EVM、精密主机接口 (PHI) 控制器板和随附的计算机软件。借助此软件,用户便可通过通用串行总线 (USB) 与 ADC 进行通信,并可采集数据和进行数据分析。
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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封装 | 引脚 | CAD 符号、封装和 3D 模型 |
---|---|---|
VQFNP (RTC) | 48 | Ultra Librarian |
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