AD5611 Datasheet

• 6-lead SC70 and LFCSP packages
• Micropower operation: 100 μA maximum at 5 V
• Power-down typically to 0.2 μA at 3 V
• 2.7 V to 5.5 V power supply
• Guaranteed monotonic by design
• Power-on reset to 0 V with brownout detection
• 3 power-down functions
• Low power serial interface with Schmitt-triggered inputs
• On-chip output buffer amplifier, rail-to-rail operation
• SYNC interrupt facility
• Minimized zero-code error
• AD5611 buffered 10-bit DAC
  • B version: ±0.5 LSB INL
  • A version: ±4 LSB INL

• Voltage level setting
• Portable battery-powered instruments
• Digital gain and offset adjustment
• Programmable voltage and current sources
• Programmable attenuators

The AD5611, members of the nanoDAC^® family, are single, 10-bit, buffered voltage output DACs that operate from a single 2.7 V to 5.5 V supply, consuming typically 75 μA at 5 V. The parts come in tiny LFCSP and SC70 packages. Their on-chip precision output amplifier allows rail-to-rail output swing to be achieved. The AD5611 utilize a versatile 3-wire serial interface that operates at clock rates up to 30 MHz and is compatible with SPI, QSPI^™, MICROWIRE^™, and DSP interface standards.

The reference for the AD5611 is derived from the power supply inputs and, therefore, gives the widest dynamic output range. The parts incorporate a power-on reset circuit, which ensures that the DAC output powers up to 0 V and remains there until a valid write to the device takes place.

The AD5611 contain a power-down feature that reduces current consumption to typically 0.2 μA at 3 V.

They also provide software-selectable output loads while in power-down mode. The parts are put into power-down mode over the serial interface.

The low power consumption of these parts in normal operation makes them ideally suited to portable battery-operated equip-ment. The combination of small package and low power makes these nanoDAC devices ideal for level-setting requirements, such as generating bias or control voltages in space-constrained and power-sensitive applications.