Product details

Resolution (Bits) 24 Number of input channels 8 Sample rate (Max) (kSPS) 128 Interface type SPI Architecture Delta-Sigma Input type Differential Multi-channel configuration Simultaneous Sampling Rating Space Reference mode Ext Input range (Max) (V) 5.25 Input range (Min) (V) 0 Features Daisy-Chainable Operating temperature range (C) -55 to 115, -55 to 125, 25 to 25 Power consumption (Typ) (mW) 530 Analog voltage AVDD (Min) (V) 4.75 SNR (dB) 111 Analog voltage AVDD (Max) (V) 5.25 INL (Max) (+/-LSB) 201.4 Digital supply (Min) (V) 1.65 Digital supply (Max) (V) 2.2
Resolution (Bits) 24 Number of input channels 8 Sample rate (Max) (kSPS) 128 Interface type SPI Architecture Delta-Sigma Input type Differential Multi-channel configuration Simultaneous Sampling Rating Space Reference mode Ext Input range (Max) (V) 5.25 Input range (Min) (V) 0 Features Daisy-Chainable Operating temperature range (C) -55 to 115, -55 to 125, 25 to 25 Power consumption (Typ) (mW) 530 Analog voltage AVDD (Min) (V) 4.75 SNR (dB) 111 Analog voltage AVDD (Max) (V) 5.25 INL (Max) (+/-LSB) 201.4 Digital supply (Min) (V) 1.65 Digital supply (Max) (V) 2.2
CFP (TBAR) (HFQ) 84 190 mm² 13.8 x 13.8
  • 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
  • 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

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.

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.

Download

Technical documentation

star = Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 11
Type Title Date
* Data sheet ADS1278-SP Radiation Hardened 8-Ch Simultaneous-Sampling 24-Bit Analog-to-Digital Converter datasheet (Rev. B) 27 Dec 2018
* Radiation & reliability report ADS1278-SP Total Ionizing Dose (TID) HDR (Rev. A) 01 Aug 2019
* Radiation & reliability report Single-Event Effects Test Report of the ADS1278-SP Octal, 24-Bit ADC 10 Oct 2018
Technical article How smart AFEs offer an integrated analog solution for thermoelectric cooling control 04 Jan 2022
Selection guide TI Space Products (Rev. H) 27 Jan 2021
E-book Fundamentals of Precision ADC Noise Analysis 19 Jun 2020
Application note Heavy Ion Orbital Environment Single-Event Effects Estimations 18 May 2020
Application note Single-Event Effects Confidence Interval Calculations 14 Jan 2020
More literature TI Engineering Evaluation Units vs. MIL-PRF-38535 QML Class V Processing 17 Jun 2019
User guide ADS1278EVM-CVAL Evaluation Module User's Guide 12 Sep 2018
Application note Digital Filter Types in Delta-Sigma ADCs 27 Jun 2017

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

ADCPRO — Analog-to-digital converter pro (ADCPro™) evaluation software

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 (...)

Evaluation board

ADS1278EVM-CVAL — ADS1278-SP Radiation Hardened Evaluation Module

The ADS1278EVM-CVAL kit is a complete evaluation/demonstration kit, which combines ADS1278EVM-CVAL with the DSP-based MMB0 board as a motherboard. The mother board and the ADCPro™ evaluation software are supplied for use with a personal computer running Microsoft™ Windows operating (...)
In stock
Limit: 1
Support software

ADS1278EVM-CVAL GUI

SBAC211.ZIP (5001 KB)
Simulation model

ADS1278-SP IBIS Model

SCAM065.ZIP (46 KB) - IBIS Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Simulation tool

TINA-TI — SPICE-based analog simulation program

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
Calculation tool

ADC-INPUT-CALC — Analog-to-digital converter (ADC) input driver design tool supporting multiple input types

ADC-INPUT-CALC is an online tool that provides support for designing the input buffer to an analog-to-digital converter (ADC). It offers 24 different op-amp based buffer circuits that can be used to drive an ADC input. The available topologies cover differential, single-ended and (...)
Calculation tool

ADS1X7X-EXCEL-CALC-TOOL — ADS1x7x Excel™ Calculator Tool

    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 (...)
Calculation tool

ANALOG-ENGINEER-CALC — 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 op-amp gain with feedback (...)
Package Pins Download
CFP (HFQ) 84 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos