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ADS7057 ACTIVE 14-Bit, 2.5MSPS, Differential Input, Small-Size Low-Power SAR ADC Single channel

Product details

Resolution (Bits) 12 Number of input channels 2 Sample rate (Max) (kSPS) 2000 Interface type SPI Architecture SAR Input type Differential Multi-channel configuration Simultaneous Sampling Rating Catalog Reference mode Int Input range (Max) (V) 5.25 Input range (Min) (V) 0 Features Small Size Operating temperature range (C) -40 to 125 Power consumption (Typ) (mW) 55 Analog voltage AVDD (Min) (V) 4.75 SNR (dB) 73 Analog voltage AVDD (Max) (V) 5.25 INL (Max) (+/-LSB) 1 Digital supply (Min) (V) 1.65 Digital supply (Max) (V) 5.25
Resolution (Bits) 12 Number of input channels 2 Sample rate (Max) (kSPS) 2000 Interface type SPI Architecture SAR Input type Differential Multi-channel configuration Simultaneous Sampling Rating Catalog Reference mode Int Input range (Max) (V) 5.25 Input range (Min) (V) 0 Features Small Size Operating temperature range (C) -40 to 125 Power consumption (Typ) (mW) 55 Analog voltage AVDD (Min) (V) 4.75 SNR (dB) 73 Analog voltage AVDD (Max) (V) 5.25 INL (Max) (+/-LSB) 1 Digital supply (Min) (V) 1.65 Digital supply (Max) (V) 5.25
WQFN (RTE) 16 9 mm² 3 x 3
  • 12- and 14-Bit Pin-Compatible Family
  • Simultaneous Sampling of Two Channels
  • Supports Fully-Differential Analog Inputs
  • Independent Internal Reference (per ADC)
  • High Speed:
    • Up to 2 MSPS with the ADS7251 (12-Bit)
    • Up to 1.5 MSPS with the ADS7851 (14-Bit)
  • Excellent Performance:
    • ADS7251:
      • SNR: 73 dB
      • INL: ±1 LSB
    • ADS7851:
      • SNR: 83.5 dB
      • INL: ±2 LSB
  • Fully-Specified Over the Extended Industrial Temperature Range: –40°C to +125°C
  • Small Footprint: WQFN-16 (3 mm × 3 mm)
  • 12- and 14-Bit Pin-Compatible Family
  • Simultaneous Sampling of Two Channels
  • Supports Fully-Differential Analog Inputs
  • Independent Internal Reference (per ADC)
  • High Speed:
    • Up to 2 MSPS with the ADS7251 (12-Bit)
    • Up to 1.5 MSPS with the ADS7851 (14-Bit)
  • Excellent Performance:
    • ADS7251:
      • SNR: 73 dB
      • INL: ±1 LSB
    • ADS7851:
      • SNR: 83.5 dB
      • INL: ±2 LSB
  • Fully-Specified Over the Extended Industrial Temperature Range: –40°C to +125°C
  • Small Footprint: WQFN-16 (3 mm × 3 mm)

The ADS7251 and ADS7851 belong to a family of pin-compatible, dual, high-speed, simultaneous-sampling, analog-to-digital converters (ADCs) that support fully-differential analog inputs and feature two independent internal voltage references. The ADS7251 offers 12-bit resolution and up to 2-MSPS sampling speed. The ADS7851 offers 14-bit resolution and up to 1.5-MSPS sampling speed.

The devices support a wide digital supply voltage range, allowing easy communication with a variety of digital host controllers using a simple, serial interface. Both devices are fully specified over the extended industrial temperature range (–40°C to +125°C) and are available in a pin-compatible, space-saving, WQFN-16 (3-mm × 3-mm) package.

The ADS7251 and ADS7851 belong to a family of pin-compatible, dual, high-speed, simultaneous-sampling, analog-to-digital converters (ADCs) that support fully-differential analog inputs and feature two independent internal voltage references. The ADS7251 offers 12-bit resolution and up to 2-MSPS sampling speed. The ADS7851 offers 14-bit resolution and up to 1.5-MSPS sampling speed.

The devices support a wide digital supply voltage range, allowing easy communication with a variety of digital host controllers using a simple, serial interface. Both devices are fully specified over the extended industrial temperature range (–40°C to +125°C) and are available in a pin-compatible, space-saving, WQFN-16 (3-mm × 3-mm) package.

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Technical documentation

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Type Title Date
* Data sheet ADS7x51 12-Bit, 2-MSPS and 14-Bit, 1.5-MSPS, Dual, Differential Input, Simultaneous-Sampling, Analog-to-Digital Converters with Internal Reference datasheet (Rev. A) 09 Apr 2014
E-book Best of Baker's Best: Precision Data Converters -- SAR ADCs 21 May 2015

Design & development

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

Simulation model

ADS8354 IBIS Model (Rev. A)

SBAM181A.ZIP (37 KB) - IBIS Model
Simulation model

ADS7251 TINA-TI Spice Model

SBAM193.ZIP (12 KB) - TINA-TI Spice Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
Simulation tool

TINA-TI — SPICE-based analog simulation program

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 (...)
Calculation tool

ADC-INPUT-CALC — Analog-to-digital converter (ADC) input driver design tool supporting multiple input types

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 (...)
Calculation tool

ANALOG-ENGINEER-CALC — 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 op-amp gain with feedback (...)
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WQFN (RTE) 16 View options

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