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AD5045 Fully Accurate 14-Bit VOUT nanoDAC® SPI Interface 2.7 V to 5.5 V in a TSSOP

Dual channel available in a 14-lead TSSOP package with individual voltage reference pins. 12-/14-/16-bit accurate, ±1 LSB INL. Low glitch on power-up. High speed serial interface with clock speeds up to 50 MHz. Three power-down modes available to the user. Reset to known output voltage (zero scale or midscale). Power-down lockout capability.

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

• Dual channel available in a 14-lead TSSOP package with individual voltage reference pins.
• 12-/14-/16-bit accurate, ±1 LSB INL.
• Low glitch on power-up.
• High speed serial interface with clock speeds up to 50 MHz.
• Three power-down modes available to the user.
• Reset to known output voltage (zero scale or midscale).
• 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

Data Sheets

Order Information

Reference Materials

• Solutions Bulletins & Brochures：Digital to Analog Converters ICs Solutions Bulletin