A877 Analog-to-Digital Converter

Summary The A877 is an analog-to-digital converter module designed for use in the AD15 Analog Subsystem. It converts analog input voltages into a 13-bit digital word (12 bits plus a sign bit) using a comparator amplifier and an internally generated reference voltage.

Key details include:

• Specifications: It features a $\pm$10V input range, 13-bit resolution (1 part in 8,190), and provides an End of Conversion (EOC) pulse upon completion.
• Maintenance: The module utilizes matched components for precision. Users are instructed not to perform field repairs but to replace the entire module if a fault occurs.
• Calibration: The document provides instructions for adjusting reference voltage, gain, and zero settings, noting that these adjustments interact and may require multiple passes.
• Technical Data: The documentation includes comprehensive connector pin assignments and power requirement details (+15V, -15V, and +5V).