ADS1258-EP
Verbessertes Produkt – 16-kanaliger Analog-zu-Digital-Wandler (ADC), 24 Bit
ADS1258-EP
- 24 Bits, No Missing Codes
- Fixed-Channel or Automatic Channel Scan
- Fixed-Channel Data Rate: 125 kSPS
- Auto-Scan Data Rate: 23.7 kSPS/Channel
- Single-Conversion Settled Data
- 16 Single-Ended or 8 Differential Inputs
- Unipolar (5 V) or Bipolar (±2.5 V) Operation
- Low Noise: 2.8 µVRMS at 1.8 kSPS
- 0.0003% Integral Nonlinearity
- DC Stability (typical):
0.02 µV/°C Offset Drift, 0.4 ppm/°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 - 42-mW Power Dissipation
- Standby, Sleep, and Power-Down Modes
- 8 General-Purpose Inputs/Outputs (GPIO)
- 32.768-kHz 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
- APPLICATIONS
- Controlled Baseline
- One Assembly/Test Site
- One Fabrication Site
- Available in Military (–55°C/125°C) and
Industrial (–40°C/105°C) Temperature Ranges(1) - Extended Product Life Cycle
- Extended Product-Change Notification
- Product Traceability
(1) Custom temperature ranges available
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 5 V or true bipolar range of ±2.5 V when operating with a 5-V 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 32.768-kHz crystal, or can be overridden by an external clock source. A buffered system clock output (15.7 MHz) 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 5-V or bipolar ±2.5-V analog supply and a digital supply compatible with interfaces ranging from 2.7 V to 5.25 V. The ADS1258 is available in QFN-48 and QFP-48 packages.
Technische Dokumentation
Typ | Titel | Datum | ||
---|---|---|---|---|
* | Data sheet | 16-Channel, 24-Bit, Analog-to-Digital Converter datasheet (Rev. D) | 18 Mär 2011 | |
* | VID | ADS1258-EP VID V6209626 | 21 Jun 2016 | |
* | Radiation & reliability report | Reliability Report ADS1258MPHPTEP | 22 Dez 2014 | |
* | Radiation & reliability report | ADS1258MPHPTEP Reliability Report | 25 Aug 2011 | |
* | Radiation & reliability report | ADS1258MRTCTEP Reliability Report | 25 Aug 2011 | |
Application note | Calculating Conversion Latency and System Cycle Time for Delta-Sigma ADCs (Rev. A) | PDF | HTML | 18 Mär 2024 | |
Application note | A Basic Guide to Bridge Measurements (Rev. A) | PDF | HTML | 13 Mär 2024 | |
Application note | Digital Filter Types in Delta-Sigma ADCs (Rev. A) | PDF | HTML | 29 Mär 2023 | |
E-book | Fundamentals of Precision ADC Noise Analysis | 19 Jun 2020 | ||
E-book | Best of Baker's Best: Precision Data Converters -- Delta-Sigma ADCs | 19 Mär 2015 | ||
Application note | ADS1258, ADS1258-EP, and ADS1158 SPI™ Timeout Function | 20 Apr 2012 |
Design und Entwicklung
Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.
ADS1258-C-EXAMPLE-CODE — ADS1258 Example C Code
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- Kontinuierliches Zuverlässigkeitsmonitoring
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