Radiation Hardened 24-Bit 8-Ch Simultaneous-Sampling Delta-Sigma ADC
ADS1278-SP
Product details
Parameters
Package | Pins | Size
Features
- Radiation Hardened
- TID 75 krad(Si)
- TID Radiation Lot Acceptance Test (RLAT) TBD
- Single Event Latchup (SEL) Immune to LET 68 MeV-cm2/mg @ 125°C
- Simultaneously Samples Eight Channels
- Up to 128-kSPS Data Rate
- AC Performance:
- 63-kHz Bandwidth
- 111-dB SNR (High-Resolution Mode)
- –108-dB THD
- DC Accuracy:
- 0.8-µV/°C Offset Drift
- 1.3-ppm/°C Gain Drift
- Selectable Operating Modes:
- High-Speed: 128 kSPS, 106-dB SNR
- High-Resolution: 52 kSPS, 111-dB SNR
- Low-Power: 52 kSPS, 31 mW/ch
- Low-Speed: 10 kSPS, 7 mW/ch
- Linear Phase Digital Filter
- SPI™ or Frame-Sync Serial Interface
- Low Sampling Aperture Error
- Modulator Output Option (Digital Filter Bypass)
- Analog Supply: 5 V
- Digital Core: 1.8 V
- I/O Supply: 1.8 V to 3.3 V
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Description
The ADS1278-SP (octal) is a 24-bit, delta-sigma (ΔΣ) analog-to-digital converter (ADC) with data rates up to 128k samples per second (SPS), allowing simultaneous sampling of eight channels.
Traditionally, industrial delta-sigma ADCs offering good drift performance use digital filters with large passband droop. As a result, they have limited signal bandwidth and are mostly suited for dc measurements. High-resolution ADCs in audio applications offer larger usable bandwidths, but the offset and drift specifications are significantly weaker than respective industrial counterparts. The ADS1278-SP combines these types of converters, allowing high-precision industrial measurement with excellent dc and ac specifications.
The high-order, chopper-stabilized modulator achieves very low drift with low in-band noise. The onboard decimation filter suppresses modulator and signal out-of-band noise. These ADCs provide a usable signal bandwidth up to 90% of the Nyquist rate with less than 0.005 dB of ripple.
Four operating modes allow for optimization of speed, resolution, and power. All operations are controlled directly by pins; there are no registers to program. The device is fully specified over the extended temperature range of –55°C to 125°C and is available in an 84-pin HFQ package.
Technical documentation
| Type | Title | Date | |
|---|---|---|---|
| * | Datasheet | ADS1278-SP Radiation Hardened 8-Ch Simultaneous-Sampling 24-Bit Analog-to-Digital Converter datasheet (Rev. B) | Dec. 27, 2018 |
| * | Radiation & reliability report | ADS1278-SP Total Ionizing Dose (TID) HDR (Rev. A) | Aug. 01, 2019 |
| * | Radiation & reliability report | Single-Event Effects Test Report of the ADS1278-SP Octal, 24-Bit ADC | Oct. 10, 2018 |
| E-book | Fundamentals of Precision ADC Noise Analysis | Jun. 19, 2020 | |
| Application note | Heavy Ion Orbital Environment Single-Event Effects Estimations | May 18, 2020 | |
| Application note | Single-Event Effects Confidence Interval Calculations | Jan. 14, 2020 | |
| More literature | TI Engineering Evaluation Units vs. MIL-PRF-38535 QML Class V Processing | Jun. 17, 2019 | |
| Selection guide | TI Space Products (Rev. G) | May 15, 2019 | |
| User guide | ADS1278EVM-CVAL Evaluation Module User's Guide | Sep. 12, 2018 | |
| Application note | Digital Filter Types in Delta-Sigma ADCs | Jun. 27, 2017 |
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
Features
- Easy-to-use evaluation software for Microsoft™ Windows 7 and Windows 10
- 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
- (...)
- The ADS1x7x Excel calculator tool provides the user with several easy-to-use tools to simplify the configuration of ADS1x7x devices. The tool helps the user understand different settings and operating modes that aid in optimizing a design with ADS1x7x wide-bandwidth analog-to-digital converters (...)
Features
- ADC code conversions
- Digital filter plot
- Daisy-chain configuration
- SNR estimator
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 |
|---|---|---|
| CFP (HFQ) | 84 | 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
Support & training
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