ADS1278-SP
- 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.
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
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Supported products & hardware
Products
Precision ADCs
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
Package | Pins | CAD symbols, footprints & 3D models |
---|---|---|
CFP (HFQ) | 84 | 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
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Support & training
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