AD5433 Datasheet

• 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
• See data sheet for additional features

• 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

The AD5433 are CMOS 10-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 (V_REF) determines the full-scale output current. An integrated feedback resistor (R_FB) provides temperature tracking and full-scale voltage output when combined with an external I-to-V precision amplifier.

While these devices are upgrades of the AD5433 in multiplying bandwidth performance, they have a latched interface and cannot be used in transparent mode.

The AD5433 and AD5445 DACs are available in a small, 20-lead LFCSP and a small, 20-lead TSSOP. For more information, see the UG-333 evaluation board user guide.