2.7 V to 5.5 V, 250 μA, Rail-to-Rail Output

AD5662

Rev. A

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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

FUNCTIONAL BLOCK DIAGRAM

AD5662

REF(+)

RESISTOR

NETWORK

POWER-DOWN

CONTROL LOGIC

DAC

REGISTER

POWER-ON

RESET

OUTPUT

BUFFER

16-BIT

DAC

INPUT

CONTROL

LOGIC

SYNC

SCLK

DIN

Figure 1.

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.

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.

Description

AD5620/AD5640/AD5660

3 V/5 V 12-/14-/16-bit DAC with

internal reference in SOT-23