14-Bit nanoDAC
Data Sheet
2.7 V to 5.5 V, <100 µA, 14-Bit nanoDAC, SPI Interface in LFCSP and SC70
AD5641
FEATURES
6-lead LFCSP and S...
Description
Data Sheet
2.7 V to 5.5 V, <100 µA, 14-Bit nanoDAC, SPI Interface in LFCSP and SC70
AD5641
FEATURES
6-lead LFCSP and SC70 packages
Micropower operation: 100 µA maximum at 5 V
Power-down to typically 0.2 µA at 3 V
Single 14-bit DAC
B version: ±4 LSB INL
A version: ±16 LSB INL
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
APPLICATIONS
Voltage level setting
Portable battery-powered instruments
Digital gain and offset adjustment
Programmable voltage and current sources
Programmable attenuators
GENERAL DESCRIPTION
The AD5641, a member of the nanoDAC® family, is a single, 14-bit, buffered, voltage-out DAC that operates from a single 2.7 V to 5.5 V supply, typically consuming 75 µA at 5 V. The part comes in tiny LFCSP and SC70 packages. Its on-chip precision output amplifier allows rail-to-rail output swing to be achieved. The AD5641 uses 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 AD5641 is derived from the power supply inputs and, therefore, gives the widest dynamic output range. The part incorporates 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 pla...
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