The ICL7137RCPL is an integrated circuit (IC) component designed for high-resolution analog-to-digital conversion applications. It is a complete dual-slope integrating analog-to-digital converter (ADC) with an in-built clock, reference, and display drive circuitry. The device is manufactured by Maxim Integrated.
One of the key features of the ICL7137RCPL is its ability to provide precise, high-resolution conversion of analog input signals into 3½-digit (±1999 counts) binary-coded decimal (BCD) output. It is designed to operate with input signals ranging from 0V to close to the positive supply voltage. The device is specifically suited for applications that require reliable measurement and display capabilities.
The ICL7137RCPL incorporates a dual-slope integration technique for precise analog-to-digital conversion. This technique ensures high accuracy and low noise performance. The conversion process within the IC involves integrating an input voltage over a fixed reference period and comparing it with a known reference voltage during the integration and de-integration phases.
To facilitate easy operation and configuration, the ICL7137RCPL includes a built-in on-chip oscillator and a voltage reference circuit. These components eliminate the need for additional external components, simplifying design and reducing costs. The device also features a multiplexed BCD output, allowing for direct interfacing with digital displays or microprocessors
