EVAL-AD5680EB【PDF 1/20 页】5 V 18-Bit nanoDAC in a SOT-23

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5 V 18-Bit

nano

DAC

in a SOT-23

AD5680

FEATURES

Single 18-bit

nano

DAC

18-bit monotonic

12-bit accuracy guaranteed

Tiny 8-lead SOT-23 package

Power-on reset to zero scale/midscale

4.5 V to 5.5 V power supply

Serial interface

Rail-to-rail operation

SYNC interrupt facility

Temperature range 40°C to +105°C

APPLICATIONS

Closed-loop process control

Low bandwidth data acquisition systems

Portable battery-powered instruments

Gain and offset adjustment

Precision setpoint control

GENERAL DESCRIPTION

Rev. 0

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registered trademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.461.3113

www.analog.com

FUNCTIONAL BLOCK DIAGRAM

OUT

GND

REF

AD5680

18-BIT

DAC

REF(+)

PRESET

DAC

CINPUT

LOGIC

DIN

SCLK

SYNC

OUTPUT

Figure 1.

PRODUCT HIGHLIGHTS

The AD5680, a member of the

nano

DAC family, is a single,

18-bit buffered voltage-out DAC that operates from a single

4.5 V to 5.5 V supply and is 18-bit monotonic.

The AD5680 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

(AD5680-1) or to midscale (AD5680-2) and remains there until

a valid write takes place.

The low power consumption of this part in normal operation

makes it ideally suited to portable battery-operated equipment.

The power consumption is 1.6 mW at 5 V.

The AD5680 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 AD5680 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.

18 bits of resolution.

12-bit accuracy guaranteed for 18-bit DAC.

Available in an 8-lead SOT-23.

Low power. Typically consumes 1.6 mW at 5 V.

Power-on reset to zero scale or to midscale.

RELATED DEVICES

AD5662

16-bit DAC in SOT-23.

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