CMOS, µP Compatible, 5µs/10µs, 8-Bit ADCs

Maxim's MX7575/MX7576 are high-speed (5µs/10µs), microprocessor (µP) compatible, 8-bit analog-to-digital converters (ADCs). The MX7575 provides an on-chip track/hold function that allows full-scale signals up to 50kHz (386mV/µs slew rate) to be acquired and digitized accurately. Both ADCs use a successive-approximation technique to achieve their fast conversions and low power dissipation. The MX7575/MX7576 operate with a +5V supply and a 1.23V external reference. They accept input voltages ranging from 0V to 2VREF.

The 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, the MX7575/MX7576 can be directly tied to a µP data bus or system l/O port.

Maxim also makes the MAX165, a plug-in replacement for the MX7575 with an internal 1.23V reference. For applications that require a differential analog input and an internal reference, the MAX166 is recommended.

Applications

* Audio Systems * Digital Signal Processing (DSP) * High-Speed Data Acquisition * High-Speed Servo Loops * Low-Power Data Loggers * Telecommunications

* Fast Conversion Time:

* 5µs (MX7575)

* 10µs (MX7576)

* Built-In Track/Hold Function (MX7575)

* Low Total Unadjusted Error (±1LSB max)

* 50kHz Full-Power Signal Bandwidth (MX7575)

* Single +5V Supply Operation

* 8-Bit µP Interface

* 100ns Data-Access Time

* Low Power: 15mW

* Small-Footprint Packages