18-Bit, 1-MSPS, 1-Ch SAR ADC with Internal VREF Buffer, Internal LDO and Enhanced SPI Interface
Product details
Parameters
Package | Pins | Size
Features
- Resolution: 18-Bits
- High Sample Rate With No Latency Output:
- ADS8910B: 1-MSPS
- ADS8912B: 500-kSPS
- ADS8914B: 250-kSPS
- Integrated LDO Enables Single-Supply Operation
- Low-Power Reference Buffer With No Droop
- Excellent AC and DC Performance:
- SNR: 102.5-dB, THD: –125-dB
- INL: ±0.5-LSB
- DNL: ±0.2-LSB, 18-Bit No-Missing-Codes
- Wide Input Range:
- Unipolar Differential Input Range: ±VREF
- VREF Input Range: 2.5-V to 5-V
- Single-Supply, Low-Power Operation
(Includes Internal Reference Buffer and LDO)- ADS8910B : 21-mW at 1-MSPS
- ADS8912B : 16-mW at 500-kSPS
- ADS8914B : 14-mW at 250-kSPS
- Enhanced-SPI Digital Interface
- Interface SCLK: 20-MHz at 1-MSPS
- Configurable Data Parity Output
- Extended Temperature Range: –40°C to +125°C
- Small Footprint: 4-mm × 4-mm VQFN
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Description
The ADS8910B, ADS8912B, and ADS8914B (ADS891xB) belong to a family of pin-to-pin compatible, high-speed, single-channel, high-precision, 18-bit successive approximation register (SAR) analog-to-digital convertors (ADCs) with an integrated reference buffer and integrated low-dropout regulator (LDO). The device family includes the ADS890xB (20-bit) and ADS892xB (16-bit) resolution variants.
The ADS891xB boost analog performance while maintaining high-resolution data transfer by using TI’s enhanced-SPI feature. Enhanced-SPI enables the ADS89xxB to achieve high throughput at lower clock speeds, thereby simplifying the board layout and lowering system cost. Enhanced-SPI also simplifies clocking-in of data, thereby making this device an excellent choice for applications involving FPGAs, DSPs. The ADS89xxB is compatible with a standard SPI Interface.
The ADS891xB has an internal data parity feature that can be appended to the ADC data output. ADC data validation by the host, using parity bits, improves system reliability.
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | ADS891xB 18-Bit, High-Speed SAR ADCs With Integrated Reference Buffer and Enhanced Performance Features datasheet (Rev. B) | Jan. 26, 2018 |
Application note | High-voltage battery monitor circuit: ±20V, 0–10kHz, 18-bit fully differential (Rev. A) | Jan. 23, 2019 | |
Application note | Attenuator Amplifier Design to Maximize the Input Voltage of Differential ADCs | Jun. 14, 2018 | |
Application note | High-current battery monitor circuit: 0–10A, 0-10kHz, 18 bit | Dec. 22, 2017 | |
Application note | Improving Input Settling for Precision Data Converters | Dec. 12, 2017 | |
Application note | Optimizing Data Transfer on High-Resolution, High-Throughput Data Converters | Dec. 12, 2017 | |
Application note | Simplify Isolation Designs Using an Enhanced-SPI ADC Interface | Dec. 11, 2017 | |
White paper | Enabling Faster, Smarter, and More Robust Solutions for SAR ADSx With multiSPI | Nov. 08, 2016 | |
User guide | ADS8910BEVM-PDK | Jul. 01, 2016 | |
More literature | ADS8910EVM-PDK Quick Start Guide | Mar. 16, 2016 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The ADS8910B evaluation module (EVM) performance demonstration kit (PDK) is a platform for evaluating the performance of the ADS8910B successive-approximation register (SAR) analog-to-digital converter (ADC). The ADS8910EVM-PDK includes the ADS8910B EVM board and precision host interface (...)
Features
- Includes hardware and software required for diagnostic testing, as well as accurate performance evaluation of the ADS8910B ADC
- USB powered; no external power supply required
- PHI controller provides convenient communication interface to ADS8910B ADC over a USB 2.0 (or higher) for power delivery, as (...)
Software development
Design tools & simulation
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
- (...)
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
- (...)
Reference designs
Design files
-
download TIDA-060017 BOM.zip (154KB) -
download TIDA-060017 Gerber.zip (760KB) -
download TIDA-060017 PCB.pdf (1000KB)
Design files
-
download TIDA-01051 BOM.pdf (107KB) -
download TIDA-01051 Assembly Drawing.pdf (2002KB) -
download TIDA-01051 PCB.pdf (8638KB) -
download TIDA-01051 CAD Files.zip (15688KB) -
download TIDA-01051 Gerber.zip (1735KB)
Design files
-
download TIDA-01050 BOM.pdf (247KB) -
download TIDA-01050 Assembly Drawing.pdf (3862KB) -
download TIDA-01050 PCB.pdf (7143KB) -
download TIDA-01050 CAD Files.zip (2442KB) -
download TIDA-01050 Gerber.zip (1180KB)
Design files
-
download TIDA-01052 BOM.pdf (247KB) -
download TIDA-01052 Assembly Drawing.pdf (3862KB) -
download TIDA-01052 PCB.pdf (7170KB) -
download TIDA-01052 CAD Files.zip (11142KB) -
download TIDA-01052 Gerber.zip (1180KB)
Design files
-
download TIPD211 Assembly Drawing.pdf (239KB) -
download TIPD211 PCB.pdf (1330KB) -
download TIPD211 CAD Files.zip (1212KB) -
download TIPD211 Gerber.zip (471KB) -
download TIPD211 BOM (Rev. A).pdf (68KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
VQFN (RGE) | 24 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
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