10 ppm/°C Max On-Chip Reference in SOT-23

Preliminary Technical Data

AD5660

Rev. Pr J

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FEATURES

Low power single 16-bit nanoDAC

12-bit accuracy guaranteed

On-chip 1.25/2.5 V, 10 ppm/°c reference

Tiny 8-lead SOT-23/MSOP package

Power-down to 200 nA @ 5 V, 50 nA @ 3 V

3 V/5 V single power supply

Guaranteed 16-bit monotonic by design

Power-on-reset to zero/midscale

Three power-down functions

Serial interface with Schmitt-triggered inputs

Rail-to-rail operation

SYNC interrupt facility

APPLICATIONS

Processcontrol

Data acquisition systems

Portable battery-powered instruments

Digital gain and offset adjustment

Programmable voltage and current sources

Programmable attenuators

Figure 1.

GENERAL DESCRIPTION

The AD5660 parts are a member of the nanoDAC family of

devices. They are low power, single, 16-bit buffered voltage-out

DACs, guaranteed monotonic by design.

The AD5660x-1 operate from a 3 V single supply featuring an

internal reference of 1.25 V and an internal gain of 2. The

AD5660x-2/3 operate from a 5 V single supply featuring an

internal reference of 2.5 V and an internal gain of 2. Each

reference has a 10 ppm/°C max temperature coefficient. The

reference associated with each part is available at the REFOUT

pin.

The part incorporates a power-on reset circuit that ensures that

the DAC output powers up to 0 V (AD5660x-1/2) or midscale

(AD5660x-3) 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 200 nA at 5 V and provides

software selectable output loads while in power-down mode.

The AD5660 uses a versatile three-wire serial interface that

operates at clock rates up to 30 MHz and is compatible with

standard SPI™, QSPI™, MICROWIRE™ and DSP interface

standards. Its on-chip precision output amplifier allows rail-to-

rail output swing to be achieved.

The low power consumption of this part in normal operation

makes it ideally suited to portable battery operated equipment.

The power consumption is 0.7 mW at 5 V reducing to 1 µW in

power-down mode.

The AD5660 is designed with new technology and is the next

generation to the AD53xx family.

PRODUCT HIGHLIGHTS

1.

16-Bit DAC; 12-Bit Accuracy Guaranteed.

2.

On-chip 1.25/2.5 V, 10 ppm/°C max Reference.

3.

Available in 8-lead SOT-23 and 8-lead MSOP package.

4.

Power-On Reset to 0 V or Midscale.

5.

Power-down capability. When powered down, the DAC

typically consumes 50 nA at 3 V and 200n A at 5 V.

6.

10 µS Settling Time.

RELATED DEVICES

Part No.

Description

AD5620/AD5640

3 V/5 V 12-/14-bit DAC with internal ref in

SOT-23

AD5662

2.7V to 5.5 V, 16-bit DAC in SOT-23,

external reference