AD5662_15 Datasheet, PDF (1/24 Pages) Analog Devices – 2.7 V to 5.5 V, 250 A, Rail-to-Rail Output 16-Bit nanoDACT in a SOT-23

2.7 V to 5.5 V, 250 μA, Rail-to-Rail Output
16-Bit nanoDAC^TM in a SOT-23
AD5662
FEATURES
Low power (250 μA @ 5 V) single 16-bit nanoDAC
12-bit accuracy guaranteed
Tiny 8-lead SOT-23/MSOP package
Power-down to 480 nA @ 5 V, 100 nA @ 3 V
Power-on reset to zero scale/midscale
2.7 V to 5.5 V power supply
Guaranteed 16-bit monotonic by design
3 power-down functions
Serial interface with Schmitt-triggered inputs
Rail-to-rail operation
SYNC interrupt facility
Temperature range −40°C to +125°C
Qualified for automotive applications
APPLICATIONS
Process control
Data acquisition systems
Portable battery-powered instruments
Digital gain and offset adjustment
Programmable voltage and current sources
Programmable attenuators
GENERAL DESCRIPTION
The AD5662, a member of the nanoDAC family, is a low power,
single, 16-bit buffered voltage-out DAC that operates from a
single 2.7 V to 5.5 V supply and is guaranteed monotonic by
design.
The AD5662 requires an external reference voltage to set the
output range of the DAC. The part incorporates a power-on
reset circuit that ensures the DAC output powers up to 0 V
(AD5662x-1) or to midscale (AD5662x-2), and remains there
until a valid write takes place. The part contains a power-down
feature that reduces the current consumption of the device to
480 nA at 5 V and provides software-selectable output loads
while in power-down mode.
The low power consumption of this part in normal operation
makes it ideally suited to portable battery-operated equipment.
The power consumption is 0.75 mW at 5 V, going down to
2.4 μW in power-down mode.
The AD5662’s on-chip precision output amplifier allows rail-to-
rail output swing to be achieved. For remote sensing applications,
the output amplifier’s inverting input is available to the user.
Rev. A
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Specifications subject to change without notice. No license is granted by implication
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FUNCTIONAL BLOCK DIAGRAM
V_{REF GND} V_DD
POWER-ON
RESET
AD5662
DAC
REGISTER
REF(+)
16-BIT
DAC
OUTPUT
BUFFER
V_FB
V_OUT
INPUT
CONTROL
LOGIC
POWER-DOWN
CONTROL LOGIC
RESISTOR
NETWORK
SYNC SCLK DIN
Figure 1.
The AD5662 uses a versatile 3-wire serial interface that operates
at clock rates up to 30 MHz, and is compatible with standard
SPI®, QSPI™, MICROWIRE™, and DSP interface standards.
PRODUCT HIGHLIGHTS
1. 16-bit DAC—12-bit accuracy guaranteed.
2. Available in 8-lead SOT-23 and 8-lead MSOP packages.
3. Low power. Typically consumes 0.42 mW at 3 V and
0.75 mW at 5 V.
4. Power-on reset to zero scale or to midscale.
5. 10 μs max settling time.
RELATED DEVICES
Part No.
AD5620/AD5640/AD5660
Description
3 V/5 V 12-/14-/16-bit DAC with
internal reference in SOT-23
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