Fully Accurate 12-/14-/16-Bit VOUTnanoDACTM
SPI Interface 2.7 V to 5.5 V in a TSSOP
Preliminary Technical Data
AD5024/AD5044/AD5064
FEATURES
FUNCTIONAL BLOCK DIAGRAMS
Low power Quad 16/14/12 bit DAC, 1LSB INL
Pin compatible and performance upgrade to AD5666
Individual and common voltage reference pin options
Rail-to-rail operation
2.7 V to 5.5 V power supply
Power-on reset to zero scale or midscale
3 power-down functions
Per channel power down
Low glitch on power up
Hardware LDAC with LDAC override function
CLR Function to programmable code
SDO daisy-chaining option
Figure 1.AD5064 Functional equivalent and pin compatible with
AD5666
14/16-lead TSSOP
APPLICATIONS
Process control
Data acquisition systems
Portable battery-powered instruments
Digital gain and offset adjustment
Programmable voltage and current sources
Programmable attenuators
Figure 2. AD5064/44/24
GENERAL DESCRIPTION
The AD5024/44/64 are low power, quad 12-/14-/16-bit buffered
voltage-out DACs offering relative accuracy specs of 1 LSB INL
with individual and common reference pin options and can
operate from a single 2.7 V to 5.5 V supply. The AD5024/44/64
parts 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. A reference buffer is also provided on-
chip. The AD5024/44/64 incorporates 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 AD5024/44/64 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.
PRODUCT HIGHLIGHTS
1. Quad channel available in 14/16-lead TSSOP package.
2. 14-lead TSSOP option provides a pin compatable and
performance upgrade to the AD5666 with individual and
common voltage reference pin options.
3. 16 bit accurate, 1 LSB INL.
4. Low glitch on power-up.
5. High speed serial interface with clock speeds up to 50 MHz.
6. Reset to known output voltage (zero scale or midscale).
Table 1. Related Devices
Part No.
AD5666
AD5066
Description
Quad,16-bit buffered D/A,16 LSB INL, TSSOP
Quad,16-bit unbuffered D/A,1 LSB INL, TSSOP
AD5065/45/25 Dual 16-bit nanoDAC, 1 LSB INL, TSSOP
AD5063/62
AD5061
AD5060/40
16-bit nanoDAC, 1 LSB INL, MSOP
16-/14bit nanoDAC, 4 LSB INL, SOT-23
16-/14bit nanoDAC, 1 LSB INL, SOT-23
Rev. PrE November 28th 2007
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