TIADS7841E
Overview
The ADS7841E is a 12-bit, 4-channel sampling analog-to-digital converter (ADC) featuring a synchronous serial SPI interface. It is designed for low-power operation, consuming only 0.9mA at a 200kHz throughput rate while operating from a single supply ranging from 2.7V to 5V. The architecture includes a multi-channel multiplexer and a successive-approximation register (SAR) ADC with a power-down mode to conserve energy between conversions.
Why Choose This Part
The ADS7841E offers high-speed 200kHz sampling with no missing codes, ensuring reliable data conversion across its entire 12-bit range. It is a pin-compatible alternative to the MAX1247, providing flexibility in sourcing for established designs. Its ability to operate down to 2.7V makes it compatible with modern low-voltage microcontrollers and battery chemistries.
Applications
Key Specifications
Getting Started
To evaluate the ADS7841E, connect the SPI interface (CS, DCLK, DIN, DOUT) to a microcontroller and provide a stable external reference voltage. Ensure the reference voltage does not exceed the supply voltage (VDD) to maintain accuracy. Use the power-down bit in the control byte to manage current consumption during idle periods in your firmware.
