Product details

Resolution (Bits) 14 Number of input channels 1 Sample rate (Max) (kSPS) 2500 Interface type SPI Architecture SAR Input type Differential Multi-channel configuration Rating Catalog Reference mode Supply Input range (Max) (V) 3.6 Input range (Min) (V) -3.6 Features Small Size Operating temperature range (C) -40 to 125 Power consumption (Typ) (mW) 1.5 Analog voltage AVDD (Min) (V) 2.35 SNR (dB) 79.6 Analog voltage AVDD (Max) (V) 3.6 INL (Max) (+/-LSB) 3 Digital supply (Min) (V) 1.65 Digital supply (Max) (V) 3.6
Resolution (Bits) 14 Number of input channels 1 Sample rate (Max) (kSPS) 2500 Interface type SPI Architecture SAR Input type Differential Multi-channel configuration Rating Catalog Reference mode Supply Input range (Max) (V) 3.6 Input range (Min) (V) -3.6 Features Small Size Operating temperature range (C) -40 to 125 Power consumption (Typ) (mW) 1.5 Analog voltage AVDD (Min) (V) 2.35 SNR (dB) 79.6 Analog voltage AVDD (Max) (V) 3.6 INL (Max) (+/-LSB) 3 Digital supply (Min) (V) 1.65 Digital supply (Max) (V) 3.6
X2QFN (RUG) 8 2 mm² 1.5 x 1.5
  • 2.5-MSPS Throughput
  • Small Package Size:
    • X2QFN-8 Package (1.5 mm × 1.5 mm)
  • Fully Differential Input Range: ±AVDD
  • Wide Operating Range:
    • AVDD: 2.35 V to 3.6 V
    • DVDD: 1.65 V to 3.6 V (Independent of AVDD)
    • Temperature Range: –40°C to +125°C
  • Excellent Performance:
    • 14-Bit NMC DNL, ±0.9-LSB INL
    • 79.5-dB SINAD at 2 kHz
    • 77-dB SINAD at 1 MHz
  • Low Power Consumption:
    • 3.6 mW at 2.5 MSPS With 3.3-V AVDD
    • 160 µW at 100 kSPS With 3.3-V AVDD
    • 82 µW at 100 kSPS With 2.5-V AVDD
  • Integrated Offset Calibration
  • SPI-Compatible Serial Interface: 60 MHz
  • JESD8-7A Compliant Digital I/O
  • 2.5-MSPS Throughput
  • Small Package Size:
    • X2QFN-8 Package (1.5 mm × 1.5 mm)
  • Fully Differential Input Range: ±AVDD
  • Wide Operating Range:
    • AVDD: 2.35 V to 3.6 V
    • DVDD: 1.65 V to 3.6 V (Independent of AVDD)
    • Temperature Range: –40°C to +125°C
  • Excellent Performance:
    • 14-Bit NMC DNL, ±0.9-LSB INL
    • 79.5-dB SINAD at 2 kHz
    • 77-dB SINAD at 1 MHz
  • Low Power Consumption:
    • 3.6 mW at 2.5 MSPS With 3.3-V AVDD
    • 160 µW at 100 kSPS With 3.3-V AVDD
    • 82 µW at 100 kSPS With 2.5-V AVDD
  • Integrated Offset Calibration
  • SPI-Compatible Serial Interface: 60 MHz
  • JESD8-7A Compliant Digital I/O

The ADS7057 device belongs to a family of pin-to-pin compatible, high-speed, low-power, single-channel successive-approximation register (SAR) type analog-to-digital converters (ADCs). The device family includes multiple resolutions, throughputs, and analog input variants (see Table 1 for a list of devices).

The ADS7057 is a 14-bit, 2.5-MSPS SAR ADC that supports fully-differential inputs in the range of ±AVDD, for AVDD in the range of 2.35 V to 3.6 V.

The internal offset calibration feature maintains excellent offset specifications over the entire AVDD and temperature operating range.

The device supports an SPI-compatible serial interface that is controlled by the CS and SCLK signals. The input signal is sampled with the CS falling edge and SCLK is used for both conversion and serial data output. The device supports a wide digital supply range (1.65 V to 3.6 V), enabling direct interfacing to a variety of host controllers. The ADS7057 complies with the JESD8-7A standard for a normal DVDD range (1.65 V to 1.95 V).

The ADS7057 is available in an 8-pin, small, X2QFN package and is specified over the extended industrial temperature range (–40°C to +125°C). The small form-factor and extremely-low power consumption make this device suitable for space-constrained and battery-powered applications that require high-speed, high-resolution data acquisition.

The ADS7057 device belongs to a family of pin-to-pin compatible, high-speed, low-power, single-channel successive-approximation register (SAR) type analog-to-digital converters (ADCs). The device family includes multiple resolutions, throughputs, and analog input variants (see Table 1 for a list of devices).

The ADS7057 is a 14-bit, 2.5-MSPS SAR ADC that supports fully-differential inputs in the range of ±AVDD, for AVDD in the range of 2.35 V to 3.6 V.

The internal offset calibration feature maintains excellent offset specifications over the entire AVDD and temperature operating range.

The device supports an SPI-compatible serial interface that is controlled by the CS and SCLK signals. The input signal is sampled with the CS falling edge and SCLK is used for both conversion and serial data output. The device supports a wide digital supply range (1.65 V to 3.6 V), enabling direct interfacing to a variety of host controllers. The ADS7057 complies with the JESD8-7A standard for a normal DVDD range (1.65 V to 1.95 V).

The ADS7057 is available in an 8-pin, small, X2QFN package and is specified over the extended industrial temperature range (–40°C to +125°C). The small form-factor and extremely-low power consumption make this device suitable for space-constrained and battery-powered applications that require high-speed, high-resolution data acquisition.

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Technical documentation

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Type Title Date
* Data sheet ADS7057 14-Bit, 2.5-MSPS, Differential Input, Small-Size, Low-Power SAR ADC datasheet 07 Dec 2017
Certificate ADS7057EVM PDK EU Declaration of Conformity (DoC) 04 Jun 2021
Application note Single-ended to diff. signal conversion using an op amp & FDA for unipolar signa (Rev. A) 08 Mar 2019
Application note Single-ended-to-differential circuit using an op amp and FDA for bipolar signals (Rev. A) 08 Mar 2019
Application note Improving Response Time and Accuracy in Autonomous Robots With Wideband SAR-ADCs 03 Oct 2018
User guide ADS7057EVM-PDK User's Guide 10 Dec 2017

Design & development

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

Evaluation board

ADS7057EVM-PDK — ADS7057 14-Bit, 2.5MSPS, Small-Size Low-Power SAR ADC Performance Demonstration Kit (PDK)

The ADS7057 evaluation module (EVM) performance demonstration kit (PDK) is a platform for evaluating the performance of the ADS7057 successive approximation register (SAR) analog-to-digital converter (ADC), which is a 14-bit, 2.5-MSPS, single-ended input, nanopower device (...)

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Support software

Source Files for SBAA246

SBAC181.ZIP (96 KB)
Support software

ADS7057EVM-PDK GUI

SBAC185.ZIP (260198 KB)
Support software

Source Files for SBAA264

SBAC188.ZIP (98 KB)
Simulation model

ADS7057 IBIS Model

SBAM364.ZIP (26 KB) - IBIS Model
Simulation model

ADS7057 TINA-TI Transient Spice Model

SBAM365.ZIP (32 KB) - TINA-TI Spice Model
Simulation model

Impedance Spectroscopy TINA-TI Reference Design (Differential)

SBOMBM0.TSC (94 KB) - TINA-TI Reference Design
Simulation model

Discrete Impedance Spectroscopy TINA-TI Reference Design (Single-Ended)

SBOMBM1.TSC (1083 KB) - TINA-TI Reference Design
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 transformer-coupled (...)
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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