Touchstone Semiconductor TSA7887ARMZ-REEL

Description
The TSA7887 is a self-contained, 2-channel, high-speed, micropower, 12-bit analog-to-digital converter (ADC) that operates from a single 2.7V to 5.25V power supply. It is capable of a 125-ksps throughput rate with an external 2MHz serial clock and draws 0.85mA supply current. The wideband input track-and-hold acquires signals in 500ns and features a single-ended sampling topology. Output data coding is straight binary and the ADC is capable of converting full power signals up to 2.5 MHz. The ADC also contains an integrated 2.5V reference or the VREF pin can be overdriven by an external reference. The TSA7887's provides one or two analog inputs each with an analog input range from 0 to VREF. In two-channel operation, the analog input range is 0V to VDD. Efficient circuit design ensures low power consumption of 2mW (typical) for normal operation and 3uW in power-down operation. The TSA7887 is fully specified from -40°C to 125°C and is available in 8-pin SOIC and MSOP packages.

Features
Alternate Source for AD7887
Single-supply Operation: 2.7V to 5.25V
INL: ±1LSB TSA7887B, 2LSB TSA7887A
One or Two Single-ended Analog Inputs
Internal Wide-bandwidth Track-and-Hold
Internal 2.5-V Reference
Flexible Power/Throughput-Rate Management
0.85mA at 125ksps (Internal VREF ON)
0.7mA at 125ksps (Internal VREF OFF)
Shutdown-mode Supply Current: 1μA (max)
SPI/QSPI/MICROWIRE/DSP-Compatible Serial Interfaces
Operating Temperature Range: -40°C to 125°C
8-pin SOIC and MSOP Packaging

Applications
Instrumentation and Control Systems
High-Speed Modems
Battery-powered systems: Personal Digital Assistants, Medical Instruments, Mobile Communications