Octal, 12-/16-Bit, I2C, denseDACs
with 5 ppm/°C On-Chip Reference
Data Sheet
Rev. D
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FEATURES
Low power octal DACs
2.6 mm × 2.6 mm 16-ball WLCSP
4 mm × 4 mm 16-lead LFCSP and 16-lead TSSOP
On-chip 1.25 V/2.5 V, 5 ppm/°C reference
Power down to 400 nA at 5 V, 200 nA at 3 V
2.7 V to 5.5 V power supply
Guaranteed monotonic by design
Power-on reset to zero scale or midscale
3 power-down functions
Hardware
A
LDACE
A
and
A
CLRE
A
functions
I2C-compatible serial interface supports standard (100 kHz)
and fast (400 kHz) modes
APPLICATIONS
Process control
Data acquisition systems
Portable battery-powered instruments
Digital gain and offset adjustment
Programmable voltage and current sources
FUNCTIONAL BLOCK DIAGRAM
VDD
1.25V/2.5V REF
VREFIN/VREFOUT
LDAC
CLR
GND
INPUT
REGISTER
DAC
REGISTER
STRING
DAC A
VOUTA
BUFFER
INPUT
REGISTER
DAC
REGISTER
STRING
DAC B
VOUTB
BUFFER
INPUT
REGISTER
DAC
REGISTER
STRING
DAC C
VOUTC
BUFFER
INPUT
REGISTER
DAC
REGISTER
STRING
DAC D
VOUTD
BUFFER
INPUT
REGISTER
DAC
REGISTER
STRING
DAC E
VOUTE
BUFFER
INPUT
REGISTER
DAC
REGISTER
STRING
DAC F
VOUTF
BUFFER
INPUT
REGISTER
DAC
REGISTER
STRING
DAC G
VOUTG
BUFFER
INPUT
REGISTER
DAC
REGISTER
STRING
DAC H
VOUTH
BUFFER
POWER-ON RESET
POWER-DOWN LOGIC
IN
T
E
RF
AC
E
L
O
G
IC
SCL
SDA
A0
AD5629R/AD5669R
08
819-
001
Figure 1.
GENERAL DESCRIPTION
bit, buffered voltage-output DACs. All devices are guaranteed
monotonic by design.
5 ppm/°C reference, giving a full-scale output range of 2.5 V.
have a 2.5 V 5 ppm/°C reference, giving a full-scale output range
of 5 V depending on the option selected. Devices with 1.25 V
reference selected operate from a single 2.7 V to 5.5 V supply.
Devices with 2.5 V reference selected operate from 4.5 V to 5.5 V.
The on-chip reference is off at power-up, allowing the use of an
external reference. The internal reference is enabled via a
software write.
The parts incorporate a power-on reset circuit to ensure that
and remains powered up at this level until a valid write takes place.
The part contains a power-down feature that reduces the current
consumption of the device to 400 nA at 5 V and provides software-
selectable output loads while in power-down mode for any or
all DAC channels.
PRODUCT HIGHLIGHTS
1.
Octal, 12-/16-bit DACs.
2.
On-chip 1.25 V/2.5 V, 5 ppm/°C reference.
3.
Available in 16-lead LFCSP and TSSOP, and 16-ball
WLCSP.
4.
Power-on reset to 0 V or midscale.
5.
Power-down capability. When powered down, the DAC
typically consumes 200 nA at 3 V and 400 nA at 5 V.