1Msps, µP Compatible, 8-Bit ADC with 1µA Power Down

The MAX153 high-speed, microprocessor (µP)-compatible, 8-bit analog-to-digital converter (ADC) uses a half-flash technique to achieve a 660ns conversion time, and digitizes at a rate of 1M samples per second (Msps). It operates with single +5V or dual ±5V supplies and accepts either unipolar or bipolar inputs. An active-low POWERDN (power-down) pin reduces current consumption to a typical value of 1µA (with 5V supply). The part returns from power-down to normal operating mode in less than 200ns, providing large reductions in supply current in applications with burst-mode input signals.

The MAX153 is DC and dynamically tested. Its µP interface appears as a memory location or input/output port that requires no external interface logic. The data outputs use latched, three-state buffered circuitry for direct connection to a µP data bus or system input port. The ADC’s input/reference arrangement enables ratiometric operation.

Applications

* Battery-Powered Systems * Burst-Mode Data Acquisition * Cellular Telephones * Digital-Signal Processing * High-Speed Servo Loops * Portable Radios * Telecommunications

* 660ns Conversion Time

* Power-Up/Power-Down in 200ns

* Internal Track/Hold

* 1Msps Throughput

* Low Power

* 40mW (Operating Mode)

* 5µW (Power-Down Mode)

* 1MHz Full-Power Bandwidth

* 20-Pin Narrow DIP, SO, and SSOP Packages

* No External Clock Required

* Unipolar/Bipolar Inputs

* Single +5V or Dual ±5V Supplies

* Ratiometric Reference Inputs