Support software
Data sheet
ADS7057
- 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.
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Technical documentation
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View all 6 | Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | ADS7057 14-Bit, 2.5-MSPS, Differential Input, Small-Size, Low-Power SAR ADC datasheet | PDF | HTML | 07 Dec 2017 |
| Application brief | Precision ADCs in Servo Drives (Rev. A) | PDF | HTML | 29 Oct 2025 | |
| Product overview | Precision ADCs for Motor Encoders and Position Sensing (Rev. A) | PDF | HTML | 28 Oct 2025 | |
| Circuit design | Single-ended to diff. signal conversion using an op amp & FDA for unipolar signa (Rev. B) | PDF | HTML | 24 Sep 2024 | |
| Circuit design | Single-ended-to-differential circuit using an op amp and FDA for bipolar signals (Rev. B) | PDF | HTML | 19 Sep 2024 | |
| Application brief | Improving Response Time and Accuracy in Autonomous Robots With Wideband SAR-ADCs | 03 Oct 2018 |
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 14-bit, ADS7057 successive approximation register (SAR) analog-to-digital converter (ADC).
The PDK includes the ADS7057 evaluation board, precision host interface (PHI) controller board, and (...)
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User guide: PDF
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| X2QFN (RUG) | 8 | Ultra Librarian |
Ordering & quality
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