Fully Accurate, 12-/14-/16-Bit VOUT nanoDAC, Quad,
SPI Interface, 4.5 V to 5.5 V in TSSOP
Data Sheet
AD5024/AD5044/AD5064
FEATURES
FUNCTIONAL BLOCK DIAGRAMS
VDD
VREFIN
AD5064-1
INPUT
REGISTER
DAC
REGISTER
INPUT
REGISTER
DAC
REGISTER
INPUT
REGISTER
DAC
REGISTER
DAC C
INPUT
REGISTER
DAC
REGISTER
DAC D
SYNC
INTERFACE
LOGIC AND
SHIFT
REGISTER
DIN
DAC B
SDO
LDAC CLR
BUFFER
VOUTA
BUFFER
VOUTB
BUFFER
VOUTC
BUFFER
VOUTD
POWER-ON
RESET
POWER-DOWN
LOGIC
POR
GND
Figure 1. AD5064-1 Functional Equivalent and Pin Compatible with AD5666
VREFA VREFB
VDD
AD5024/
AD5044/
AD5064
APPLICATIONS
LDAC
INPUT
REGISTER
DAC
REGISTER
INPUT
REGISTER
DAC
REGISTER
INPUT
REGISTER
DAC
REGISTER
INPUT
REGISTER
DAC
REGISTER
DAC A
SCLK
Process control
Data acquisition systems
Portable battery-powered instruments
Digital gain and offset adjustment
Programmable voltage and current sources
Programmable attenuators
SYNC
INTERFACE
LOGIC AND
SHIFT
REGISTER
DIN
DAC B
DAC C
DAC D
LDAC CLR
BUFFER
VOUTA
BUFFER
VOUTB
BUFFER
VOUTC
BUFFER
VOUTD
POWER-DOWN
LOGIC
POWER-ON
RESET
POR
VREFC VREFD
GND
Figure 2. AD5024/AD5044/AD5064 with Individual Reference Pins
GENERAL DESCRIPTION
PRODUCT HIGHLIGHTS
The AD5024/AD5044/AD5064/AD5064-1 are low power, quad
12-/14-/16-bit buffered voltage output nanoDAC® converters
that offer relative accuracy specifications of 1 LSB INL and 1 LSB
DNL with the AD5024/AD5044/AD5064 individual reference
pin and the AD5064-1 common reference pin options. The
AD5024/AD5044/AD5064/AD5064-1 can operate from a single
4.5 V to 5.5 V supply. The AD5024/AD5044/AD5064/AD5064-1
also offer a differential accuracy specification of ±1 LSB. The
devices 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. Integrated reference buffers and output amplifiers are
also provided on-chip. The AD5024/AD5044/AD5064/AD5064-1
incorporate a power-on reset circuit that ensures the DAC
output powers up to zero scale or midscale and remains there
until a valid write takes place to the device. The AD5024/AD5044/
AD5064/AD5064-1 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 powerdown mode. Total unadjusted error for the devices is
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