Automotive, 24-bit, 32-kSPS, 4-channel simultaneous-sampling, delta-sigma ADC
Product details
Parameters
Package | Pins | Size
Features
- AEC-Q100 qualified for automotive applications:
- Temperature grade 1: –40°C to +125°C, TA
- Functional Safety-Capable
- 4 simultaneous-sampling, differential input ADCs
- Programmable data rate up to 32 kSPS
- Programmable gain up to 128
- Noise performance:
- 0.82 µVRMS at 1 kSPS, gain = 8
- Global-chop mode to remove offset drift over temperature and time
- High-impedance analog inputs for direct sensor connection
- Integrated negative charge pump allows input signal measurements below ground
- Crosstalk between channels: –120 dB
- Low-drift internal 1.2-V reference
- Precision internal oscillator
- Cyclic redundancy check (CRC) on communications and register map
- 2.7-V to 3.6-V analog and digital supplies
- Low power consumption: 5 mW at 3.3-V AVDD and DVDD
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Description
The ADS131B04-Q1 is a four-channel, simultaneous-sampling, 24-bit, delta-sigma (ΔΣ) analog-to-digital converter (ADC) that offers wide dynamic range, low power, and buffered analog inputs, making the device an excellent fit for automotive battery management systems (BMS). The ADC inputs can be directly interfaced to shunt resistors for bidirectional battery-current measurements, to resistor-divider networks for high-voltage measurements, or to temperature sensors (such as thermistors or analog output temperature sensors).
The individual ADC channels can be independently configured depending on the sensor input. A low-noise, programmable gain amplifier (PGA) provides gains ranging from 1 to 128 to amplify low-level signals. The device features a global-chop mode to remove offset drift over temperature and time. Additionally, this device integrates offset and gain calibration registers to help remove signal-chain errors.
A low-drift, 1.2-V reference and precision oscillator are integrated into the device reducing printed circuit board (PCB) area. Optional cyclic redundancy checks (CRCs) on the data input, data output, and register map maintain communication integrity.
The complete analog front-end (AFE) is offered in a 20-pin TSSOP package and is specified over the automotive temperature range of –40°C to +125°C.
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | ADS131B04-Q1 Automotive, 4-Channel, 32-kSPS, Simultaneous-Sampling, 24-Bit, Delta-Sigma ADC datasheet (Rev. A) | Jan. 05, 2021 |
Functional safety information | ADS131B04-Q1 Functional Safety FIT Rate and Pin FMA | Dec. 09, 2020 | |
User guide | ADS131B04-Q1EVM User's Guide | Apr. 27, 2020 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The ADS131B04-Q1 evaluation module (EVM) is a platform for evaluating the ADS131B04-Q1 product, which is a low-power, four-channel, simultaneous-sampling, delta-sigma analog-to-digital converter (ADC).
The ADS131B04-Q1EVM kit includes the ADS131B04-Q1 board and a precision host interface (PHI (...)
Features
- Onboard 3.3-V unipolar analog supply
- Onboard 3.3-V unipolar digital supply
- Digital header pins to connect to host microcontroller and logic analyzer
- Terminal blocks and header pins to connect external analog input signals
- Onboard 8.192-MHz crystal oscillator
- USB powered; no external power supply required
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
- (...)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
TSSOP (PW) | 20 | 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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