ADS7955-Q1
- Qualified for Automotive Applications
- 1-MHz Sample Rate Serial Devices
- 10-Bit Resolution
- Zero Latency
- 20-MHz Serial Interface
- Analog Supply Range: 2.7 to 5.25 V
- I/O Supply Range: 1.7 to 5.25 V
- Two SW Selectable Unipolar, Input Ranges: 0 to 2.5V and 0 to 5V
- Auto and Manual Modes for Channel Selection
- 8-Channel Device can Share 16 Channel Device Footprint
- Two Programmable Alarm Levels per Channel
- Four Individually Configurable GPIOs for TSSOP Package Devices
- Typical Power Dissipation: 14.5 mW (+VA = 5 V, +VBD = 3 V) at 1 MSPS
- Power-Down Current (1 µA)
- Input Bandwidth (47 MHz at 3 dB)
- 30-Pin TSSOP Package
The ADS7955-Q1 is a 10-bit multichannel analog-to-digital converter.
The device includes a capacitor based SAR A/D converter with inherent sample and hold.
The device accepts a wide analog supply range from 2.7V to 5.25V. Very low power consumption makes this device suitable for battery-powered and isolated power supply applications.
A wide 1.7V to 5.25V I/O supply range facilitates a glue-less interface with the most commonly used CMOS digital hosts.
The serial interface is controlled by CS and SCLK for easy connection with microprocessors and DSP.
The input signal is sampled with the falling edge of CS. It uses SCLK for conversion, serial data output, and reading serial data in. The device allows auto sequencing of preselected channels or manual selection of a channel for the next conversion cycle.
There are two software selectable input ranges (0V - 2.5V and 0V - 5V), four individually configurable GPIOs, and two programmable alarm thresholds per channel. These features make the device suitable for most data acquisition applications.
The device offers an attractive power-down feature. This is extremely useful for power saving when the device is operated at lower conversion speeds.
Technical documentation
Type | Title | Date | ||
---|---|---|---|---|
* | Data sheet | 10-Bit, 1 MSPS, 8Channel, Single-Ended, MicroPower, Serial Interface ADC datasheet | 16 Dec 2011 | |
Functional safety information | ADS7955-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA | PDF | HTML | 16 Oct 2020 | |
Application brief | Temperature Monitoring in HEV and EV Traction Inverter Systems Using ADS795x-Q1 | 28 Jun 2018 | ||
E-book | Best of Baker's Best: Precision Data Converters -- SAR ADCs | 21 May 2015 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
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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 |
---|---|---|
TSSOP (DBT) | 30 | 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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