DAC

EN

A

B

Decode

SDI

CLK

DGND

MSB

R A

FB

V

A B

REF

R B

FB

I

A

OUT

A

A

GND

A

B

GND

I

B

OUT

Input

Register

Input

Register

DAC A

Register

DACB

Register

R

R

Power-On

Reset

R

R

DAC A

DACB

CS

16

D0

D1

D2

D3

D4

D5

D6

D7

D8

D9

D10

D11

D12

D13

D14

D15

A0

A1

RS

LDAC

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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

DAC8812

SBAS349D – AUGUST 2005 – REVISED JANUARY 2016

DAC8812 Dual, Serial-Input 16-Bit Multiplying Digital-to-Analog Converter

1

1

Features

1

•

Relative Accuracy: 1 LSB Max

•

Differential Nonlinearity: 1 LSB Max

•

2-mA Full-Scale Current ±20%,

•

0.5-

μs Settling Time

•

Midscale or Zero-Scale Reset

•

Separate 4Q Multiplying Reference Inputs

•

Reference Bandwidth: 10 MHz

•

Reference Dynamics: –105-dB THD

•

SPI™-Compatible 3-Wire Interface:

50 MHz

•

Double Buffered Registers to Enable

Simultaneous Multichannel Update

•

Internal Power-On Reset

•

Industry-Standard Pin Configuration

2

Applications

•

Automatic Test Equipment

•

Instrumentation

•

Digitally Controlled Calibration

3 Description

The DAC8812 is a dual, 16-bit, current-output digital-

to-analog converter (DAC) designed to operate from

a single 2.7-V to 5.5-V supply.

determines the full-scale output current. An internal

for the full-scale output when combined with an

external I-to-V precision amplifier.

A double-buffered, serial data interface offers high-

speed, 3-wire, SPI and microcontroller compatible

inputs using serial data in (SDI), clock (CLK), and a

chip-select (CS). A common level-sensitive load DAC

strobe (LDAC) input allows simultaneous update of all

DAC outputs from previously loaded input registers.

Additionally, an internal power-on reset forces the

output voltage to zero at system turnon. An MSB pin

allows system reset assertion (RS) to force all

registers to zero code when MSB = 0, or to half-scale

code when MSB = 1.

The DAC8812 is available in a TSSOP-16 package.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

DAC8812

TSSOP (16)

5.00 mm × 4.40 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Space

Space

Space

Functional Block Diagram