Product Details
●The AD5025 / AD5045 / AD5065 are low power, dual 12-/14-/16-bit buffered voltage output nanoDAC® DACs offering relative accuracy specifications of ±1 LSB INL with individual reference pins, and can operate from a single 4.5 V to 5.5 V supply. The AD5025 / AD5045 / AD5065 also offer a differential accuracy specification of ±1 LSB. The parts use a versatile 3-wire, low power Schmitt trigger serial interface that operates at clock rates up to 50 MHz and is compatible with standard SPI®, QSPI™, MICROWIRE™, and DSP interface standards. The reference for the AD5025 / AD5045 / AD5065 are supplied from an external pin and a reference buffer is provided on chip. The AD5025 / AD5045 / AD5065 incorporate a power-on reset circuit that ensures the DAC output powers up zero scale or midscale and remains there until a valid write takes place to the device. The AD5025 / AD5045 / AD5065 contain a power-down feature that reduces the current consumption of the device to typically 400 nA at 5 V and provides software selectable output loads while in power-down mode. The parts are put into power-down mode over the serial interface. Total unadjusted error for the parts is <2.5 mV. The parts exhibit very low glitch on power-up. The outputs of all DACs can be updated simultaneously using the LDAC function, with the added functionality of user-selectable DAC channels to simultaneously update. There is also an asynchronous CLR that clears all DACs to a software-selectable code—0 V, midscale, or full scale. The parts also feature a power-down lockout pin, PDL, which can be used to prevent the DAC from entering power-down under any circumstances over the serial interface.
●Product Highlights
● 1. Dual channel available in a 14-lead TSSOP package with individual voltage reference pins.
● 2. 12-/14-/16-bit accurate, ±1 LSB INL.
● 3. Low glitch on power-up.
● 4. High speed serial interface with clock speeds up to 50 MHz.
● 5. Three power-down modes available to the user.
● 6. Reset to known output voltage (zero scale or midscale).
● 7. Power-down lockout capability.
●Applications
● Process controls
● Data acquisition systems
● Portable battery-powered instruments
● Digital gain and offset adjustment
● Programmable voltage and current sources
● Programmable attenuators
●### Features and Benefits
● Low power dual 12-/14-/16-bit DAC, ±1 LSB INL
● Individual voltage reference pins
● Rail-to-rail operation
● 4.5 V to 5.5 V power supply
● Power-on reset to zero scale or midscale
● Power down to 400 nA at 5 V
● 3 power-down functions
● Per channel power-down
● Low glitch upon power-up
● Hardware power-down lockout capability
● Hardware LDAC with software LDAC override function
● CLR function to programmable code
● SDO daisy-chaining option
● 14-lead TSSOP
