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
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
4.5 V to 5.5 V power supply
Power-on reset to zero scale or midscale
3 power-down functions and per-channel power-down
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
INTERFACE
LOGIC AND
SHIFT
SYNC
DIN
INPUT
REGISTER
DAC
REGISTER
VOUTC
REGISTER
INPUT
REGISTER
DAC
REGISTER
VOUTD
SDO
POWER-DOWN
POWER-ON
RESET
LOGIC
Hardware
with software
override function
LDAC
LDAC
POR
GND
LDAC CLR
function to programmable code
CLR
Figure 1. AD5064-1 Functional Equivalent and Pin Compatible with AD5666
SDO daisy-chaining option
14-/16-lead TSSOP
Internal reference buffer and internal output amplifier
VREFA VREFB
VDD
AD5024/
AD5044/
AD5064
LDAC
BUFFER
BUFFER
BUFFER
BUFFER
INPUT
DAC
VOUT
A
DAC A
DAC B
DAC C
DAC D
REGISTER
REGISTER
APPLICATIONS
SCLK
INPUT
REGISTER
DAC
REGISTER
VOUTB
INTERFACE
LOGIC AND
SHIFT
Process control
Data acquisition systems
Portable battery-powered instruments
Digital gain and offset adjustment
Programmable voltage and current sources
Programmable attenuators
SYNC
DIN
REGISTER
INPUT
REGISTER
DAC
REGISTER
VOUT
C
INPUT
REGISTER
DAC
REGISTER
VOUTD
POWER-DOWN
LOGIC
POWER-ON
RESET
POR
GND
VREFC VREFD
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
parts 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 parts is <2 mV.
1. Quad channel available in 14-/16-lead TSSOP packages.
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
Part 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. F
Document Feedback
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Trademarks andregisteredtrademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2008–2013 Analog Devices, Inc. All rights reserved.
Technical Support
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