
Analog Devices
GENERAL DESCRIPTION
The AD5424/AD5433/AD54451 are CMOS 8-, 10-, and 12-bit current output digital-to-analog converters (DACs), respectively. These devices operate from a 2.5 V to 5.5 V power supply, making them suitable for battery-powered applications and many other applications. These DACs utilize data readback, allowing the user to read the contents of the DAC register via the DB pins. On power-up, the internal register and latches are filled with 0s and the DAC outputs are at zero scale.
As a result of manufacturing with a CMOS submicron process, they offer excellent 4-quadrant multiplication characteristics, with large signal multiplying bandwidths of up to 10 MHz.
The applied external reference input voltage (VREF) determines the full-scale output current. An integrated feedback resistor (RFB) provides temperature tracking and full-scale voltage output when combined with an external I-to-V precision amplifier.
FEATURES
2.5 V to 5.5 V supply operation
Fast parallel interface (17 ns write cycle)
Update rate of 20.4 MSPS
INL of ±1 LSB for 12-bit DAC
10 MHz multiplying bandwidth
±10 V reference input
Extended temperature range: –40°C to +125°C
20-lead TSSOP and chip scale (4 mm × 4 mm) packages
8-, 10-, and 12-bit current output DACs
Upgrades to AD7524/AD7533/AD7545
Pin-compatible 8-, 10-, and 12-bit DACs in chip scale
Guaranteed monotonic
4-quadrant multiplication
Power-on reset with brownout detection
Readback function
0.4 μA typical power consumption
APPLICATIONS
Portable battery-powered applications
Waveform generators
Analog processing
Instrumentation applications
Programmable amplifiers and attenuators
Digitally controlled calibration
Programmable filters and oscillators
Composite video
Ultrasound
Gain, offset, and voltage trimming