ADS7881
- 4 MHz Sample Rate, 12-Bit Resolution
- Zero Latency
- Unipolar, Pseudo Differential Input, Range:
- 0 V to 2.5 V
- High Speed Parallel Interface
- 71 dB SNR and –88.5 dB THD at 1 MHz I/P
- Power Dissipation 95 mW at 4 MSPS
- Nap Mode (10 mW Power Dissipation)
- Power Down (10 µW)
- Internal Reference
- Internal Reference Buffer
- 48-Pin TQFP Package
- APPLICATIONS
- Optical Networking (DWDM, MEMS Based Switching)
- Spectrum Analyzers
- High Speed Data Acquisition Systems
- High Speed Close-Loop Systems
- Telecommunication
- Ultra-Sound Detection
The ADS7881 is a 12-bit 4-MSPS A-to-D converter with 2.5-V internal reference. The device includes a capacitor based SAR A/D converter with inherent sample and hold. The device offers a 12-bit parallel interface with an additional byte mode that provides easy interface with 8-bit processors. The device has a pseudo-differential input stage.
The IN swing of ±200 mV is useful to compensate for ground voltage mismatch between the ADC and sensor and also to cancel common-mode noise. With nap mode enabled, the device operates at lower power when used at lower conversion rates. The device is available in a 48-pin TQFP package.
Technical documentation
Type | Title | Date | ||
---|---|---|---|---|
* | Data sheet | 12 Bit 4 MSPS Low Power SAR Analog to Digital Converter datasheet (Rev. B) | 11 Nov 2005 | |
User guide | ADS7881EVM, ADS7891EVM Evaluation Module (Rev. A) | PDF | HTML | 05 Oct 2021 | |
E-book | Best of Baker's Best: Precision Data Converters -- SAR ADCs | 21 May 2015 | ||
Application note | Determining Minimum Acquisition Times for SAR ADCs, part 2 | 17 Mar 2011 | ||
Application note | Determining Minimum Acquisition Times for SAR ADCs, part 1 (Rev. A) | 10 Nov 2010 | ||
Application note | Interfacing the ADS7881 to TMS320C6713 DSP | 30 Jun 2005 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
ADS7881EVM — ADS7881 evaluation module
The ADS7881EVM is designed for the prototyping and evaluation of the ADS7881 analog-to-digital converter (ADC). This 12-bit, 4MSPS, ADC includes a pseudo-differential input for true bi-polar inputs. The EVM uses a low noise THS4031 inverting gain of one, buffer amplifier. This allows the ADS7881 (...)
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 |
---|---|---|
TQFP (PFB) | 48 | Ultra Librarian |
VQFN (RGZ) | 48 | 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
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