FEATURES

· Micropower Operation: 600 µA at 5 V VDD

· Power-On Reset to Zero

· +2.7 V to +5.5 V Analog Power Supply

· 12-Bit Monotonic

· I2C™ Interface Up to 3.4 Mbps

· Data Transmit Capability

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

Operation

· Double-Buffered Input Register

· Address Support for up to Four DAC7574s

· Synchronous Update Support for up to 16

Channels

· Operation From -40°C to 105°C

· Small 10 Lead MSOP Package

APPLICATIONS

· Process Control

· Data Acquisition Systems

· Closed-Loop Servo Control

· PC Peripherals

· Portable Instrumentation

DESCRIPTION

The DAC7574 is a low-power, quad channel, 12-bit

buffered voltage output DAC. Its on-chip precision out-

put amplifier allows rail-to-rail output swing to be

achieved. The DAC7574 utilizes an I2C compatible two

wire serial interface supporting high-speed interface

mode with address support of up to four DAC7574s for

a total of 16 channels on the bus.

The DAC7574 uses VDD and GND to set the output

range of the DAC. The DAC7574 incorporates a

power-on-reset circuit that ensures that the DAC output

powers up at zero volts and remains there until a valid

write takes place to the device. The DAC7574 contains a power-down feature, accessed via the internal control

register, that reduces the current consumption of the

device to 200 nA at 5 V.

The low power consumption of this part in normal

operation makes it ideally suited to portable battery

operated equipment. The power consumption is less

than 3mW at VDD = 5 V reducing to 1 µWin power-down

mode.

The DAC7574 is available in a 10-leadMSOP package.