描述 Description

The DAC5573 is a low-power, quad channel, 8-bit buffered voltage output DAC. Its on-chip precision output amplifier allows rail-to-rail output swing. The DAC5573 utilizes an I2C-compatible two-wire serial interface supporting high-speed interface mode with address support of up to sixteen DAC5573s for a total of 64 channels on the bus.

The DAC5573 requires an external reference voltage to set the output range of the DAC. The DAC5573 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 in the device. The DAC5573 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 3 mW at VDD=5 V reducing to 1 μW in power-down mode

The DAC5573 is available in a 16-lead TSSOP package.

特性 Features

? Micropower Operation: 500 μA at 3 V VDD
? Fast Update Rate: 188 kSPS
? Power-On Reset to Zero
? 2.7-V to 5.5-V Analog Power Supply
? 8-Bit Monotonic
? I2C? Interface up to 3.4 Mbps
? Data Transmit Capability
? Rail-to-Rail Output Buffer Amplifier
? Double-Buffered Input Register
? Address Support for up to Sixteen DAC5573s
? Synchronous Update for up to 64 Channels
? Voltage Translators for all Digital Inputs
? Operation From –40°C to 105°C
? Small 16 Lead TSSOP Package
? APPLICATIONS
? Process Control
? Data Acquisition Systems
? Closed-Loop Servo Control
? PC Peripherals
? Portable Instrumentation

I2C is a trademark of Philips Corporation.