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ADS7254

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12 Bit, 1 MSPS, Dual, Simultaneous Sampling Differential SAR ADC

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12 Bit, 1 MSPS, Dual, Simultaneous Sampling Differential SAR ADC

ADS7254

ACTIVE
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Product details

Parameters

Resolution (Bits) 12 Number of input channels 2 Sample rate (Max) (kSPS) 1000 Interface type SPI Architecture SAR Input type Differential Multi-channel configuration Simultaneous Sampling Rating Catalog Reference mode Ext, Int Input range (Max) (V) 5.5 Input range (Min) (V) 0 Features Small Size Operating temperature range (C) -40 to 125 Power consumption (Typ) (mW) 45 Analog voltage AVDD (Min) (V) 4.5 SNR (dB) 74 Analog voltage AVDD (Max) (V) 5.5 INL (Max) (+/-LSB) 1 Digital supply (Min) (V) 1.65 Digital supply (Max) (V) 5.5 open-in-new Find other Precision ADCs (<=10MSPS)

Package | Pins | Size

TSSOP (PW) 16 22 mm² 5 x 4.4 WQFN (RTE) 16 9 mm² 3 x 3 open-in-new Find other Precision ADCs (<=10MSPS)

Features

  • 16-, 14-, and 12-Bit, Pin-Compatible Family
  • Simultaneous Sampling of Two Channels
  • Supports Fully-Differential Inputs
  • High Speed:
    • ADS8354: 16 Bits, 700 kSPS
    • ADS7854: 14 Bits, 1 MSPS
    • ADS7254: 12 Bits, 1 MSPS
  • Excellent DC Performance:
    • ADS8354:
      • 16-Bit NMC DNL, ±2.5-LSB Max INL
    • ADS7854:
      • 14-Bit NMC DNL, ±1.5-LSB Max INL
    • ADS7254:
      • 12-Bit NMC DNL, ±1-LSB Max INL
  • Excellent AC Performance:
    • ADS8354:
      • 93-dB SNR, –100-dB THD
    • ADS7854:
      • 88-dB SNR, –95-dB THD
    • ADS7254:
      • 72-dB SNR, –90-dB THD
  • Dual, Programmable, and Buffered
    2.5-V Internal Reference
  • Fully-Specified Over the Extended Industrial Temperature Range: –40°C to 125°C
  • Small Footprint:
    WQFN-16 (3-mm × 3-mm) and TSSOP-16
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Description

The ADS8354, ADS7854, and ADS7254 belong to a family of pin-compatible, dual, high-speed, simultaneous-sampling, analog-to-digital converters (ADCs) that support fully-differential analog inputs.

Each device includes two individually programmable reference sources that can be used for system-level gain calibration. Also, a flexible serial interface that can operate over a wide power-supply range enables easy communication with a large variety of host controllers. Power consumption for a given throughput can be optimized by using the two low-power modes supported by the device. All devices are fully specified over the extended industrial temperature range (–40°C to 125°C) and are available in pin-compatible, WQFN-16 (3-mm × 3-mm) and TSSOP-16 packages.

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Technical documentation

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Type Title Date
* Data sheet ADSxx54 Dual, High-Speed, 16-, 14-, and 12-Bit, Simultaneous-Sampling, Analog-to-Digital Converters datasheet (Rev. B) Aug. 12, 2014
E-book Best of Baker's Best: Precision Data Converters -- SAR ADCs May 21, 2015
Technical article Performance comparison between SAR ADC input types – Part 1 Sep. 12, 2014
User guide ADS8354EVM-PDK and ADS7854EVM-PDK User's Guide Apr. 03, 2014

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Software development

SUPPORT SOFTWARE Download
SBAC128A.ZIP (134040 KB)

Design tools & simulation

SIMULATION MODEL Download
SBAM181A.ZIP (37 KB) - IBIS Model
SIMULATION MODEL Download
SBAM198.ZIP (146 KB) - TINA-TI Reference Design
SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
View details
SIMULATION TOOL Download
SPICE-based analog simulation program
TINA-TI — 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 (...)
document-generic User guide
CALCULATION TOOL Download
Analog-to-digital converter (ADC) input driver design tool supporting multiple input types
ADC-INPUT-CALC — ADC-INPUT-CALC is an online tool that provides support for designing the input buffer to an analog-to-digital converter (ADC). It offers 24 different op-amp based buffer circuits that can be used to drive an ADC input. The available topologies cover differential, single-ended and transformer-coupled (...)
CALCULATION TOOL Download
Analog engineer's calculator
ANALOG-ENGINEER-CALC — 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 op-amp gain with feedback (...)
Features
  • Expedites circuit design with analog-to-digital converters (ADCs) and digital-to-analog converters (DACs)
    • Noise calculations
    • Common unit translation
  • Solves common amplifier circuit design problems
    • Gain selections using standard resistors
    • Filter configurations
    • Total noise for common amplifier configurations
  • (...)
View details

Reference designs

REFERENCE DESIGNS Download
Differential Signal Conditioning Circuit for Current and Voltage Measurement Using Fluxgate Sensors
TIDA-00201 — This design provides a 4-channel signal conditioning solution for differential ADCs integrated into a microcontroller measuring motor current using fluxgate sensors. Also provided is an alternative measurement circuit with external differential SAR ADCs as well as circuits for high-speed overcurrent (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Interface to a HIPERFACE Position Encoder Reference Design
TIDA-00202 — The TIDA-00202 reference design implements an EMC compliant industrial hybrid analog and digital interface to a HIPERFACE position encoder. A 3.3V supply RS485 transceiver with IEC-ESD and IEC-EFT protection is used for the bidirectional parameter channel. For the analog sin/cos signal channel (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Transient and Digital Fault Recorder AFE Using Differential Amplifiers and HS ADC Reference Design
TIDA-00499 — While Digital Fault Recorders (DFRs) can detect transients in 17/20 μs at 60/50 Hz, transient recorders capture disturbances that can peak and decay well within a microsecond. This reference design demonstrates the capturing of transient inputs at up to 1 MHz for DFR and 25 MHz for transient (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Dual Channel Data Acquisition System for Optical Encoders, 12 Bit, 1MSPS
TIPD117 — This TI Precision Verified Design provides the theory, component selection, simulation, PCB design, and measurement details for a 12-bit 1-MSPS single supply dual channel simultaneous data acquisition system. This circuit achieves 73 dB SINAD for a 4.5 V differential signal at 2 KHz input frequency (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
TSSOP (PW) 16 View options
WQFN (RTE) 16 View options

Ordering & quality

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  • Ongoing reliability monitoring

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