Product Summary

The AD7574TQ is a low-cost, 8-bit up compatible ADC which uses the successive-approximations technique to provide a conversion time of 15us. Designed to be operated as a memory mapped input device, the AD7574TQ can be interrfaced like static RAM, ROM, or slow memory. Internal clock, +5V operation, on-board comparator and interface logic, as well as low power dissipation and fast conversion time make the AD7574TQ ideal for most ADC/uP interface applications.

Parametrics

AD7574TQ absolute maximum ratings: (1)VDD to AGND:0V to 7.0V; (2)VDD to DGND:0V to 7.0V; (3)AGND to DGND:-0.3V to VDD; (4)digital input voltage to DGND:-0.3V to +15.0V; (5)digital output voltage to DGND:-0.3V to VDD; (6)CLK input voltage to DGND:-0.3V to VDD; (7)VREF:±20V; (8)VBOFS:±20V; (9)VAIN:±20V; (10)operating temperature range:-55 to +150℃; (11)storage temperature range:-65 to +150℃; (12)lead temperature:+300℃.

Features

AD7574TQ features: (1)8-bit resoultion; (2)no missed codes over full temperature range; (3)fast conversion time:15us; (4)interfaces to up like RAM, ROM or slow-memory; (5)low power dissipation:30mW; (6)rationmetric capability; (7)single +5V supply; (8)low cost; (9)internal comparator and clock oscillator.

Diagrams

AD7574TQ block diagram

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