ADS1278-HT
High-Temperature Quad/Octal, Simultaneous-Sampling, 24-Bit Analog-to-Digital Converter
ADS1278-HT
- Simultaneously Measure Eight Channels
- Up to 128-kSPS Data Rate
- AC Performance:
62-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
- Currently Available in an HTQFP-64 PowerPAD™ package,
an 84-Pin HFQ Package and a KGD Chiptray Option - Supports Extreme Temperature Applications
- Controlled Baseline
- One Assembly/Test Site
- One Fabrication Site
- Available in Extreme (–55°C/210°C) Temperature Range(1)
- Extended Product Life Cycle
- Extended Product-Change Notification
- Product Traceability
- Texas Instruments High Temperature Products Utilize Highly
Optimized Silicon (Die) Solutions With Dsign and Process
Enhancements to Maximize Performance Over Extended Temperatures
- APPLICATIONS
- Down-Hole Drilling
- High Temperature Environments
- Vibration/Modal Analysis
- Multi-Channel Data Acquisition
- Acoustics/Dynamic Strain Gauges
- Pressure Sensors
(1) Custom temperature ranges available
All other trademarks are the property of their respective owners
Based on the single-channel ADS1271, the ADS1278 (octal) is a 24-bit, delta-sigma (ΔΣ) analog-to-digital converter (ADC) with data rates up to 128 k 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 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 industrial range (–55°C to 210°C) and is available in an HTQFP-64 PowerPAD package (55°C to 175°C), an 84-pin HFQ package and a KGD chiptray option.
Technical documentation
Type | Title | Date | ||
---|---|---|---|---|
* | Data sheet | Quad/Octal, Simultaneous Sampling, 24-Bit Analog-to-Digital Converter datasheet (Rev. E) | 11 Apr 2013 | |
* | Radiation & reliability report | ADS1278SHFQ Reliability Report | 07 May 2012 | |
* | Radiation & reliability report | ADS1278SHKP Reliability Report | 07 May 2012 | |
Application note | Digital Filter Types in Delta-Sigma ADCs (Rev. A) | PDF | HTML | 29 Mar 2023 | |
E-book | Fundamentals of Precision ADC Noise Analysis | 19 Jun 2020 | ||
EVM User's guide | Harsh Environment Acquisition Terminal (H.E.A.T.) System Evaluation Kit (Rev. D) | 24 Jul 2015 | ||
E-book | Best of Baker's Best: Precision Data Converters -- Delta-Sigma ADCs | 19 Mar 2015 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
ADC-TO-VREF-SELECT — ADC to Voltage Reference Selection Tool
Supported products & hardware
Products
Precision ADCs
Biosensing AFEs
Integrated precision ADCs & DACs
High-speed ADCs (≥10 MSPS)
Series voltage references
ANALOG-ENGINEER-CALC — PC software analog engineer's calculator
The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)
Supported products & hardware
Products
Precision op amps (Vos<1mV)
General-purpose op amps
Audio op amps
Transimpedance amplifiers
High-speed op amps (GBW ≥ 50 MHz)
Power op amps
Video amplifiers
Line drivers
Transconductance amplifiers & laser drivers
Fully differential amplifiers
Precision ADCs
Biosensing AFEs
High-speed ADCs (≥10 MSPS)
Receivers
Touchscreen controllers
Difference amplifiers
Instrumentation amplifiers
Audio line receivers
Analog current-sense amplifiers
Digital power monitors
Analog current-sense amplifiers with integrated shunt resistor
Digital power monitors with integrated shunt resistor
Die & wafer services
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
TINA-TI — SPICE-based analog simulation program
TIDA-00002 — Harsh Environment Acquisition Terminal (HEAT) EVM Platform for High Temperature Applications
Package | Pins | CAD symbols, footprints & 3D models |
---|---|---|
CFP (HFQ) | 84 | Ultra Librarian |
CFP (HKP) | 84 | Ultra Librarian |
DIESALE (KGD) | — | |
HTQFP (PAP) | 64 | Ultra Librarian |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
- Fab location
- Assembly location
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
TI E2E™ forums with technical support from TI engineers
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