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
VREFIN
VDD
Low power quad 12-/14-/16-bit DAC, 1 LSB INL
Pin compatible and performance upgrade to AD5666
Individual and common voltage reference pin options
Rail-to-rail operation
AD5064-1
LDAC
BUFFER
BUFFER
BUFFER
BUFFER
INPUT
DAC
VOUT
A
DAC A
DAC B
DAC C
DAC D
REGISTER
REGISTER
SCLK
INPUT
REGISTER
DAC
REGISTER
VOUTB
VOUTC
VOUTD
INTERFACE
LOGIC AND
SHIFT
SYNC
DIN
4.5 V to 5.5 V power supply
INPUT
REGISTER
DAC
REGISTER
REGISTER
Power-on reset to zero scale or midscale
3 power-down functions and per-channel power-down
Hardware LDAC with software LDAC override function
CLR function to programmable code
DAC
REGISTER
INPUT
REGISTER
SDO
POWER-ON
RESET
POWER-DOWN
LOGIC
POR
GND
LDAC CLR
Figure 1. AD5064-1 Functional Equivalent and Pin Compatible with AD5666
SDO daisy-chaining option
VREFA VREFB
VDD
14-/16-lead TSSOP
AD5024/
AD5044/
AD5064
Internal reference buffer and internal output amplifier
LDAC
BUFFER
BUFFER
BUFFER
BUFFER
DAC
INPUT
VOUT
A
DAC A
DAC B
DAC C
DAC D
REGISTER
REGISTER
APPLICATIONS
SCLK
INPUT
REGISTER
DAC
REGISTER
VOUTB
VOUTC
VOUTD
INTERFACE
LOGIC AND
SHIFT
Process control
SYNC
DIN
REGISTER
INPUT
REGISTER
DAC
REGISTER
Data acquisition systems
Portable battery-powered instruments
Digital gain and offset adjustment
Programmable voltage and current sources
Programmable attenuators
DAC
REGISTER
INPUT
REGISTER
POWER-ON
RESET
POWER-DOWN
LOGIC
POR
VREFC VREFD
GND
LDAC CLR
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 compati-
ble 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 power-
down mode. Total unadjusted error for the devices is <2 mV.
1. Quad channel available in 14-/16-lead TSSOPs.
2. 16-bit accurate, 1 LSB INL.
3. High speed serial interface with clock speeds up to 50 MHz.
4. Reset to known output voltage (zero scale or midscale).
Table 1. Related Devices
Device No.
Description
AD5666
Quad,16-bit buffered DAC,
16 LSB INL, TSSOP
AD5025/AD5045/AD5065 Dual, 16-bit buffered DACs,
1 LSB INL, TSSOP
AD5062, AD5063
16-bit nanoDAC, 1 LSB INL, SOT-23,
MSOP
AD5061
16-bit nanoDAC, 4 LSB INL, SOT-23
AD5040/AD5060
14-/16-bit nanoDAC, 1 LSB INL,
SOT-23
Rev. G
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Trademarks and registeredtrademarks arethe property of their respective owners.
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Tel: 781.329.4700 ©2008–2016 Analog Devices, Inc. All rights reserved.
Technical Support
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