Product Details
●The AD5337/AD5338/AD5339 are dual 8-, 10-, and 12-bit buffered voltage output DACs, respectively. Each part is housed in an 8-lead MSOP package and operates from a single 2.5 V to 5.5 V supply, consuming 250 μA at 3 V. On-chip output amplifiers allow rail-to-rail output swing with a slew rate of 0.7 V/μs. A 2-wire serial interface operates at clock rates up to 400 kHz. This interface is SMBus compatible at VDD < 3.6 V. Multiple devices can be placed on the same bus.
●The references for the two DACs are derived from one reference pin. The outputs of all DACs can be updated simultaneously using the software LDAC function. The parts incorporate a power-on reset circuit to ensure that the DAC outputs power up to 0 V and remain there until a valid write to the device takes place. A software clear function resets all input and DAC registers to 0 V. A power-down feature reduces the current consumption of the devices to 200 nA @ 5 V (80 nA @ 3 V).
●The low power consumption of these parts in normal operation makes them ideally suited to portable battery-operated equipment. The power consumption is typically 1.5 mW at 5 V and 0.75 mW at 3 V, reducing to 1 μW in power-down mode.
●Applications
● Portable battery-powered instruments
● Digital gain and offset adjustment
● Programmable voltage and current sources
● Programmable attenuators
● Industrial process control
●### Features and Benefits
● AD5337: 2 buffered 8-bit DACs in 8-lead MSOP
● AD5338, AD5338-1: 2 buffered 10-bit DACs in 8-lead MSOP
● AD5339: 2 buffered 12-bit DACs in 8-lead MSOP
● Low power operation: 250 μA @ 3 V, 300 μA @ 5 V
● 2-wire (I2C-compatible) serial interface
● 2.5 V to 5.5 V power supply
● Guaranteed monotonic by design over all codes
● Power-down to 80 nA @ 3 V, 200 nA @ 5 V
● 3 power-down modes
● Double-buffered input logic
● Output range: 0 V to VREF
● Power-on reset to 0 V
