MX7575/MX7576 are high-speed (5µs/10µs), microprocessor (µP) compatible, 8-bit analog-to-digital converters (ADCs). MX7575 provides an on-chip track/hold function that allows accurate acquisition and digitization of full-scale signals up to 50kHz (386mV/µs slew rate). Both ADCs use a successive-approximation technique to achieve fast conversions and low power dissipation. MX7575/MX7576 operate with a +5V supply and a 1.23V external reference. They accept input voltages ranging from 0V to 2VREF. MX7575/MX7576 are easily interfaced to all popular 8-bit µPs through standard CS and RD control signals. These signals control conversion start and data access. A BUSY signal indicates the beginning and end of a conversion. Since all the data outputs are latched and three-state buffered, MX7575/MX7576 can be directly connected to a µP data bus or system I/O port. Maxim also makes MAX165, a plug-in replacement for MX7575 with an internal 1.23V reference. For applications that require a differential analog input and an internal reference, MAX166 is recommended.
The Maxim MX7575 and MX7576 are high‑speed, microprocessor‑compatible 8‑bit analog‑to‑digital converters. They operate from a single +5 V supply with a 1.23 V external reference and accept input voltages from 0 V to 2 V REF. The MX7575 includes an on‑chip track/hold function for accurate acquisition of signals up to 50 kHz, while the MX7576 samples the input eight times per conversion.
The datasheet provides absolute maximum ratings, electrical characteristics, pin configurations, functional diagrams, timing specifications, and recommended circuit layouts. It also describes the two interface modes (slow‑memory and ROM) and the optional asynchronous conversion mode for the MX7576, along with guidelines for clocking, reference driving, and minimizing noise.