GENERAL DESCRIPTION

The ADT7316/ADT7317/ADT73181combine a 10-bit temperature-to-digital converter and a quad 12-/10-/8-bit DAC, respectively, in a 16-lead QSOP. This includes a band gap temperature sensor and a 10-bit ADC to monitor and digitize the temperature reading to a resolution of 0.25°C. The ADT7316/ ADT7317/ADT7318 operate from a single 2.7 V to 5.5 V supply. The output voltage of the DAC ranges from 0 V to 2 VREF, with an output voltage settling time of 7 μs typically.

FEATURES

ADT7316—four 12-bit DACs

ADT7317—four 10-bit DACs

ADT7318—four 8-bit DACs

Buffered voltage output

Guaranteed monotonic by design over all codes

10-bit temperature-to-digital converter

Temperature range: ?40°C to +120°C

Temperature sensor accuracy of ±0.5°C

Supply range: 2.7 V to 5.5 V

DAC output range: 0 V to 2 VREF

Power-down current : <10 μA

Internal 2.28 VREF option

Double-buffered input logic

Buffered/unbuffered reference input option

Power-on reset to 0 V

Simultaneous update of outputs (LDAC function)

On-chip rail-to-rail output buffer amplifier

I2C?-, SMBus-, SPI?-, QSPI?-, MICROWIRE?-, and DSP-compatible 4-wire serial interface

SMBus packet error checking (PEC) compatible

16-lead QSOP

APPLICATIONS

Portable battery-powered instruments

Personal computers

Telecommunications systems

Electronic test equipment

Domestic appliances

Process control