Dual, 10-Bit nanoDAC

Data Sheet

AD5338R

Rev. A

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FEATURES

Low drift 2.5 V reference: 2 ppm/°C typical

Tiny package: 3 mm × 3 mm, 16-lead LFCSP

Total unadjusted error (TUE): ±0.1% of full-scale range (FSR)

maximum

Offset error: ±1.5 mV maximum

Gain error: ±0.1% of FSR maximum

High drive capability: 20 mA, 0.5 V from supply rails

User selectable gain of 1 or 2 (GAIN pin)

Reset to zero scale or midscale (RSTSEL pin)

1.8 V logic compatibility

Low glitch: 0.5 nV-sec

Low power: 3.3 mW at 3 V

2.7 V to 5.5 V power supply

−40°C to +105°C temperature range

APPLICATIONS

Optical transceivers

Base station power amplifiers

Process controls (programmable logic controller [PLC] I/O cards)

Industrial automation

Data acquisition systems

FUNCTIONAL BLOCK DIAGRAM

SCL

SDA

A1

A0

INPUT

REGISTER

DAC

REGISTER

STRING

DAC A

BUFFER

INPUT

REGISTER

DAC

REGISTER

STRING

DAC B

BUFFER

GND

2.5V

REFERENCE

POWER-

DOWN

LOGIC

POWER-ON

RESET

GAIN =

×1/×2

RSTSEL

GAIN

LDAC RESET

AD5338R

Figure 1.

Table 1. Related Devices

Interface

Reference

12-Bit

10-Bit

SPI

Internal

AD5687R

AD5313R1

External

AD5687

AD53131

Internal

AD5697R

AD5338R1

External

AD53381

1

The AD5338R and the AD5338 are not pin-to-pin or software compatible. The

AD5313R and the AD5313 are not pin-to-pin or software compatible.

GENERAL DESCRIPTION

The AD5338R, a member of the nanoDAC® family, is a low power,

dual, 10-bit buffered voltage output digital-to-analog converter

(DAC). The device includes a 2.5 V, 2 ppm/°C internal reference

(enabled by default) and a gain select pin giving a full-scale output

of 2.5 V (gain = 1) or 5 V (gain = 2). The AD5338R operates from

a single 2.7 V to 5.5 V supply, is guaranteed monotonic by design,

and exhibits less than 0.1% FSR gain error and 1.5 mV offset error

performance. The device is available in a 3 mm × 3 mm LFCSP

and a TSSOP package.

The AD5338R also incorporates a power-on reset circuit and a

RSTSEL pin that ensures that the DAC outputs power up to zero

scale or midscale and remain there until a valid write takes place.

It contains a per channel power-down feature that reduces the

current consumption of the device to 4 µA at 3 V while in power-

down mode.

The AD5338R uses a versatile 2-wire serial interface that operates

for 1.8 V/3 V/5 V logic.

PRODUCT HIGHLIGHTS

1. Precision DC Performance.

TUE: ±0.1% of FSR maximum

Offset error: ±1.5 mV maximum

Gain error: ±0.1% of FSR maximum

2. Low Drift 2.5 V On-Chip Reference.

2 ppm/°C typical temperature coefficient

5 ppm/°C maximum temperature coefficient

3. Two Package Options.

3 mm × 3 mm, 16-lead LFCSP

16-lead TSSOP