5µs, 8-Bit ADC with Track/Hold and Reference

The MAX165/MAX166 are high-speed (5μs) microprocessor (μP)- compatible, 8-bit AOCs with track/hold (T/H). The T/H function 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 fast conversions and low power dissipation. The MAX165/MAX166 operate with a +5V supply and an internal or external + 1.23V reference, and accept single-ended (MAX165) or differential (MAX166) voltages ranging from 0V to 2VREF.

The MAX165/MAX166 are easily interfaced to all popular 8-bit μPs through standard CS and RD control signals. These signals control the start of conversions and data access. A BUSY signal indicates the beginning and end of conversions. Since all the data outputs are latched and three-state buffered, the MAX165/MAX166 can be directly tied to a μP data bus or system input/output port.

The MAX165 is a plug-in replacement for the MXA7575, with the addition of an internal 1.23V reference. For applications that require a differential analog input and an internal reference, the MAX166 is recommended.

APPLICATIONS

* Digital-Signal Processing

* High-Speed Data Acquisition

* Telecommunications

* Audio Systems

* High-Speed Servo Loops

* Low-Power Data Loggers

* 5μs Conversion Time

* Built-In Track/Hold

* ±1LSB Max Total Unadjusted Error

* 50kHz Signal Bandwidth

* Internal 1.23V Bandgap Reference and Buffer