20-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: 20-Bits
- High Sample Rate With No Latency Output:
- ADS8900B: 1-MSPS
- ADS8902B: 500-kSPS
- ADS8904B: 250-kSPS
- Integrated LDO Enables Low-Power, Single-Supply Operation
- Low Power Reference Buffer with No Droop
- Excellent AC and DC Performance:
- SNR: 104.5-dB, THD: –125-dB
- DNL: ±0.2-ppm, 20-Bit No-Missing-Codes
- INL: ±1-ppm
- Wide Input Range:
- Unipolar Differential Input Range: ±VREF
- VREF Input Range: 2.5-V to 5-V
- Enhanced-SPI Digital Interface
- Interface SCLK : 22-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 ADS8900B, ADS8902B, and ADS8904B (ADS890xB) belong to a family of pin-to-pin compatible, high-speed, single-channel, high-precision, 20-bit successive-approximation-register (SAR) analog-to-digital converters (ADCs) with an integrated reference buffer and integrated low-dropout regulator (LDO). The device family includes the ADS891xB (18-bit) and ADS892xB (16-bit) resolution variants.
The ADS89xxB boosts analog performance while maintaining high-resolution data transfer by using TI’s Enhanced-SPI feature. Enhanced-SPI enables ADS89xxB in achieving high throughput at lower clock speeds, there by simplifying the board layout and lowering system cost. Enhanced-SPI also simplifies the host’s clocking-in of data there by making it ideal for applications involving FPGAs, DSPs. ADS89xxB is compatible with standard SPI Interface.
The ADS89xxB has an internal data parity feature which can be appended to the ADC data output. ADC data validation by the host, using parity bits, improves system reliability.
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The ADS8900B evaluation module (EVM) performance demonstration kit (PDK) is a platform for evaluating the performance of the ADS8900B successive-approximation register (SAR) analog-to-digital converter (ADC), which is a fully-differential input, 20-bit, 1-MSPS device (...)
Features
- Includes hardware and software required for diagnostic testing, as well as accurate performance evaluation of the ADS8900B ADC
- USB powered; no external power supply required
- PHI controller provides convenient communication interface to ADS8900B ADC over a USB 2.0 (or higher) for power delivery, as (...)
Description
The precision signal injector (PSI) is a platform for evaluating the performance of successive-approximation register (SAR) analog-to-digital converters (ADCs). The board provides a low-distortion, low-noise, 2-kHz input signal for driving the input of the ADC, and pairs with most of the (...)
Features
- PSI software GUI has graphical tool for controlling amplitude, frequency, and offset of AC signal
- Onboard filter for generating very-low distortion, low-noise, 2-kHz signal
- Jumper-selectable options for filtering and offset-/common-mode voltage
- Single-ended or true differential-signal output options
- (...)
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-01351 BOM.pdf (145KB) -
download TIDA-01351 Assembly Drawing.pdf (942KB) -
download TIDA-01351 PCB.pdf (4318KB) -
download TIDA-01351 CAD Files.zip (2265KB) -
download TIDA-01351 Gerber.zip (2381KB)
Design files
-
download TIDA-01054 Assembly Drawing.pdf (858KB) -
download TIDA-01054 PCB.pdf (3668KB) -
download TIDA-01054 Gerber.zip (1236KB) -
download TIDA-01054 BOM (Rev. A).pdf (79KB) -
download TIDA-01054 Altium (Rev. A).zip (57322KB)
Design files
-
download TIDA-01057 BOM.pdf (123KB) -
download TIDA-01057 Assembly Drawing.pdf (983KB) -
download TIDA-01057 PCB.pdf (4279KB) -
download TIDA-01057 Altium.zip (30897KB) -
download TIDA-01057 Gerber.zip (2100KB)
Design files
-
download TIDA-01056 BOM.pdf (124KB) -
download TIDA-01056 Assembly Drawing.pdf (810KB) -
download TIDA-01056 PCB.pdf (3442KB) -
download TIDA-01056 CAD Files.zip (2609KB) -
download TIDA-01056 Gerber.zip (1603KB)
Design files
-
download TIDA-01037 BOM.pdf (235KB) -
download TIDA-01037 Assembly Drawing.pdf (973KB) -
download TIDA-01037 PCB.pdf (5793KB) -
download TIDA-01037 CAD Files.zip (4863KB) -
download TIDA-01037 Gerber.zip (496KB)
- Significantly improves high frequency AC signal chain performance (SNR and THD) by (...)
Design files
-
download TIDA-01035 BOM.pdf (238KB) -
download TIDA-01035 Assembly Drawing.pdf (848KB) -
download TIDA-01035 PCB.pdf (4897KB) -
download TIDA-01035 CAD Files.zip (5420KB) -
download TIDA-01035 Gerber.zip (458KB)
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.
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