Octal, 12-/16-Bit, I2C, denseDACs
with 5 ppm/°C On-Chip Reference
Data Sheet
AD5629R/AD5669R
FEATURES
FUNCTIONAL BLOCK DIAGRAM
V
V
/V
DD
REFIN REFOUT
Low power octal DACs
AD5629R: 12 bits
AD5669R: 16 bits
AD5629R/AD5669R
1.25V/2.5V REF
BUFFER
LDAC
INPUT
REGISTER
DAC
STRING
DAC A
V
V
V
V
V
V
V
V
A
B
C
D
E
F
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
REGISTER
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
SCL
SDA
A0
BUFFER
BUFFER
BUFFER
BUFFER
BUFFER
BUFFER
BUFFER
INPUT
REGISTER
DAC
REGISTER
STRING
DAC B
INPUT
REGISTER
DAC
REGISTER
STRING
DAC C
INPUT
REGISTER
DAC
REGISTER
STRING
DAC D
INPUT
REGISTER
DAC
REGISTER
STRING
DAC E
LDAC
CLR
functions
Hardware
and
I2C-compatible serial interface supports standard (100 kHz)
and fast (400 kHz) modes
INPUT
REGISTER
DAC
REGISTER
STRING
DAC F
APPLICATIONS
INPUT
REGISTER
DAC
REGISTER
STRING
DAC G
G
H
Process control
INPUT
REGISTER
DAC
REGISTER
STRING
DAC H
Data acquisition systems
Portable battery-powered instruments
Digital gain and offset adjustment
Programmable voltage and current sources
POWER-ON RESET
POWER-DOWN LOGIC
GND
LDAC CLR
Figure 1.
GENERAL DESCRIPTION
The AD5629R/AD5669R devices are low power, octal, 12-/16-
bit, buffered voltage-output DACs. All devices are guaranteed
monotonic by design.
The parts incorporate a power-on reset circuit to ensure that
the DAC output powers up to 0 V (AD5629R-1/AD5629R-2,
AD5669R-1/AD5669R-2) or midscale (AD5629R-3/AD5669R-3)
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.
The AD5629R/AD5669R have an on-chip reference with an
internal gain of 2. The AD5629R-1/AD5669R-1 have a 1.25 V,
5 ppm/°C reference, giving a full-scale output range of 2.5 V.
The AD5629R-2/AD5629R-3 and the AD5669R-2/AD5669R-3
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.
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.
Rev. E
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