FEATURES

· Micropower Operation: 125 mA @ 3 V

· Fast Update Rate: 188 kSPS

· Power-On Reset to Zero

· +2.7-V to +5.5-V Power Supply

· Specified Monotonic by Design

· I2C™ Interface up to 3.4 MBPS

· On-Chip Output Buffer Amplifier, Rail-to-Rail

Operation

· Double-Buffered Input Register

· Address Support for up to Two DAC6571s

· Small SOT23-6 Package

· Operation From –40°C to +105°C

APPLICATIONS

· Process Control

· Data Acquistion Systems

· Closed-Loop Servo Control

· PC Peripherals

· Portable Instrumentation

DESCRIPTION

The DAC6571 is a low-power, single-channel, 10-bit

buffered voltage output digital-to-analog converter

(DAC). Its on-chip precision output amplifier allows

rail-to-rail output swing to be achieved. The DAC6571

utilizes an I2C-compatible, two-wire serial interface

that operates at clock rates up to 3.4 MBPS with

address support of up to two DAC6571s on the same

data bus.

The output voltage range of the DAC is 0 V to VDD.

The DAC6571 incorporates a power-on-reset circuit

that ensures that the DAC output powers up at zero

volts and remains there until a valid write to the

device takes place. The DAC6571 contains a power-down feature, accessed via the internal control

register, that reduces the current consumption of the

device to 50 nA at 5 V.

The low power consumption of this part in normal

operation makes it ideally suited for portable battery

operated equipment. The power consumption is less

than 0.7 mW at VDD = 5 V reducing to 1 mW in

power-down mode.

The DAC7571/6571/5571 are 12/10/8-bit,

single-channel I2C DACs from the same family. The

DAC7574/6574/5574 and DAC7573/6573/5573 are

12/10/8-bit, quad-channel I2C DACs. Also see the

DAC8571/8574 for single/quad-channel, 16-bit I2C

DACs.