16-Bit 2kSPS 4-Ch ADC With PGA, Reference, and IDAC for Precision Sensor Measurement
Product details
Parameters
Package | Pins | Size
Features
- Programmable Data Rates Up to 2 kSPS
- Single-Cycle Settling for All Data Rates
- Simultaneous 50-Hz and 60-Hz Rejection at
20 SPS - Analog Multiplexer With 8 (ADS1148) and
4 (ADS1147) Independently Selectable Inputs - Programmable Gain: 1 V/V to 128 V/V
- Dual-Matched Programmable Excitation Current Sources
- Low-Drift Internal 2.048-V Reference
- Sensor Burnout Detection
- 4 or 8 General-Purpose I/Os (ADS1147 and ADS1148)
- Internal Temperature Sensor
- Power Supply and VREF Monitoring (ADS1147 and ADS1148)
- Self and System Calibration
- SPI™-Compatible Serial Interface
- Analog Supply: Unipolar (2.7 V to 5.25 V) or Bipolar (±2.5 V)
- Digital Supply: 2.7 V to 5.25 V
Description
The ADS1146, ADS1147, and ADS1148 devices are precision, 16-bit analog-to-digital converters (ADCs) that include many integrated features to reduce system cost and component count for sensor measurement applications. The devices feature a low-noise, programmable gain amplifier (PGA), a precision delta-sigma (ΔΣ) ADC with a single-cycle settling digital filter, and an internal oscillator. The ADS1147 and ADS1148 devices also provide a built-in, low-drift voltage reference, and two matched programmable excitation current sources (IDACs).
An input multiplexer supports four differential inputs for the ADS1148, two for the ADS1147, and one for the ADS1146. In addition, the multiplexer integrates sensor burn-out detection, voltage bias for thermocouples, system monitoring, and general purpose digital I/Os (ADS1147 and ADS1148). The PGA provides selectable gains up to 128 V/V. These features provide a complete front-end solution for temperature sensor measurement applications including thermocouples, thermistors, and resistance temperature detectors (RTDs) and other small signal measurements including resistive bridge sensors. The digital filter settles in a single cycle to support fast channel cycling when using the input multiplexer and provides data rates up to 2 kSPS. For data rates of 20 SPS or less, both 50-Hz and 60-Hz interference are rejected by the filter.
Similar but not functionally equivalent to the compared device:
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
ADCPro™ is a modular software system for evaluating analog-to-digital converters (ADCs) without the need for expensive logic analyzers and complex analysis routines. Used alone it is suitable for performing analysis on data sets captured from ADC testing; when paired with a Texas Instruments (...)
Features
ADCPro software from Texas Instruments will simplify the tasks of collecting and analyzing ADC data, and ease evaluation. With it, you can easily set up an evaluation system that may not exactly replicate the manufacturer's system, but still arrive at meaningful results that can be compared to (...)
Description
The ADS1147EVM is an evaluation board for the ADS1147, a 16-bit, multi-channel, delta-sigma analog-to-digital converter (ADC). The modular EVM uses the ADS1147 and minimal circuitry to demonstrate functionality for prototyping and part evaluation. The pins of the ADS1147 are accessible through (...)
Description
The ADS1147EVM-PDK is a complete evaluation/demonstration kit, which combines the ADS1147EVM with the MSP430-based MMB3 motherboard for use with a personal computer. The MMB3 motherboard allows the ADS1147EVM to connect to a computer via a USB port. The ADS1147EVM-PDK is controlled by the (...)
Features
- Easy-to-use evaluation software for Microsoft™ Windows XP and Windows 7
- Built-in analysis tools including scope, FFT, and histogram displays
- Data collection to text files
- Complete control of board settings
- Easily expandable with new analysis plug in tools from Texas Instruments
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
- (...)
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| TSSOP (PW) | 20 | View options |
Ordering & quality
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- 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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