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ADS1258-EP

AKTIV

Verbessertes Produkt – 16-kanaliger Analog-zu-Digital-Wandler (ADC), 24 Bit

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ADS1258-EP

AKTIV
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Produktdetails

Resolution (Bits) 24 Sample rate (max) (ksps) 125 Number of input channels 16 Interface type SPI Architecture Delta-Sigma Input type Differential, Single-ended Multichannel configuration Multiplexed Rating HiRel Enhanced Product Reference mode External Input voltage range (max) (V) 2.75, 5.35 Input voltage range (min) (V) -2.7, -0.1 Features GPIO, Oscillator, Temp Sensor Operating temperature range (°C) -55 to 125 Power consumption (typ) (mW) 42 Analog supply voltage (min) (V) 4.75 Analog supply voltage (max) (V) 5.25 SNR (dB) 117 Digital supply (min) (V) 2.7 Digital supply (max) (V) 5.25
Resolution (Bits) 24 Sample rate (max) (ksps) 125 Number of input channels 16 Interface type SPI Architecture Delta-Sigma Input type Differential, Single-ended Multichannel configuration Multiplexed Rating HiRel Enhanced Product Reference mode External Input voltage range (max) (V) 2.75, 5.35 Input voltage range (min) (V) -2.7, -0.1 Features GPIO, Oscillator, Temp Sensor Operating temperature range (°C) -55 to 125 Power consumption (typ) (mW) 42 Analog supply voltage (min) (V) 4.75 Analog supply voltage (max) (V) 5.25 SNR (dB) 117 Digital supply (min) (V) 2.7 Digital supply (max) (V) 5.25
HTQFP (PHP) 48 81 mm² 9 x 9 VQFNP (RTC) 48 49 mm² 7 x 7
  • 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
  • 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.

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.
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Technische Dokumentation

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Top-Dokumentation Typ Titel Format-Optionen 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 (Rev. A) 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

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Support-Software

ADS1258-C-EXAMPLE-CODE — ADS1258 Example C Code

Expedite your embedded design using this example C code for the ADS1258
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ADS1158, ADS1258 and ADS1258-EP IBIS Model

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ADC-DAC-TO-VREF-SELECT-DESIGN-TOOL — The ADC-TO-VREF-SELECT tool enables the pairing of TI ADCs, DACs, and series voltage references.

The ADC-TO-VREF-SELECT tool enables the pairing of TI analog-to-digital converters (ADCs) and series voltage references. Users can select an ADC device and the desired reference voltage, and the tool will list up to two voltage reference recommendations.
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PSPICE-FOR-TI — PSpice® für TI Design-und Simulationstool

PSpice® für TI ist eine Design- und Simulationsumgebung, welche Sie dabei unterstützt, die Funktionalität analoger Schaltungen zu evaluieren. Diese Design- und Simulationssuite mit vollem Funktionsumfang verwendet eine analoge Analyse-Engine von Cadence®. PSpice für TI ist kostenlos erhältlich und (...)
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TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
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