Product Details
●The AD5301/AD5311/AD5321 are single 8-/10-/12-bit, buffered, voltage-output DACs that operate from a single 2.5 V to 5.5 V supply, consuming 120 μA at 3 V. The on-chip output amplifier allows rail-to-rail output swing with a slew rate of 0.7 V/μs. It uses a 2-wire (I2 C-compatible) serial interface that operates at clock rates up to 400 kHz. Multiple devices can share the same bus.
●The reference for the DAC is derived from the power supply inputs and thus gives the widest dynamic output range. These devices incorporate a power-on reset circuit, which ensures that the DAC output powers up to 0 V and remains there until a valid write takes place. The devices contain a power-down feature that reduces the current consumption of the device to 50 nA at 3 V and provides software-selectable output loads while in power-down mode.
●The low power consumption in normal operation makes these DACs ideally suited to portable battery-operated equipment. The power consumption is 0.75 mW at 5 V and 0.36 mW at 3 V, reducing to 1 μW in all power-down modes.
●Applications
● Portable battery-powered instruments
● Digital gain and offset adjustment
● Programmable voltage and current sources
● Programmable attenuators
●### Features and Benefits
● Buffered voltage output 12-bit DAC
● 6-lead SOT-23 and 8-lead MSOP packages
● Micropower operation: 120 μA at 3 V
● 2-wire (I2C-compatible) serial interface
● Data readback capability
● 2.5 V to 5.5 V power supply
● Guaranteed monotonic by design over all codes
● Power-down to 50 nA at 3 V
● Reference derived from power supply
● Power-on reset to 0 V
● On-chip rail-to-rail output buffer amplifier
● 3 power-down functions
