DAC8565

24-BitShiftRegister

SYNC

SCLK

D

IN

DataBufferA

DACRegisterA

DataBufferB

DACRegisterB

DataBufferC

DACRegisterC

DataBufferD

DACRegisterD

Buffer

Control

Register

Control

ControlLogic

2.5V

Reference

Power-Down

ControlLogic

16-BitDAC

16-BitDAC

16-BitDAC

16-BitDAC

V

A

OUT

V

B

OUT

V

C

OUT

V

D

OUT

GND

LDAC

ENABLE

RSTSEL

RST

DAC8565

AV

DD

V

REF

REF

H/V

OUT

IOV

DD

V

REFL

DAC8565

www.ti.com

SBAS411C

– JUNE 2007 – REVISED MARCH 2011

16-Bit, Quad Channel, Ultra-Low Glitch, Voltage Output

Digital-to-Analog Converter with 2.5V, 2ppm/

°C Internal Reference

Check for Samples: DAC8565

1

FEATURES

DESCRIPTION

The

DAC8565

is

a

low-power,

voltage-output,

234

•

Relative Accuracy: 4LSB

four-channel, 16-bit digital-to-analog converter (DAC).

•

Glitch Energy: 0.15nV-s

The

device

includes

a

2.5V,

2ppm/

°C

internal

•

Internal Reference:

reference (enabled by default), giving a full-scale

output voltage range of 2.5V. The internal reference

– 2.5V Reference Voltage (enabled by default)

has an initial accuracy of 0.004% and can source up

– 0.004% Initial Accuracy (typ)

to 20mA at the VREFH/VREFOUT pin. The device is

– 2ppm/°C Temperature Drift (typ)

monotonic,

provides

very

good

linearity,

and

minimizes undesired code-to-code transient voltages

– 5ppm/°C Temperature Drift (max)

(glitch). The DAC8565 use a versatile 3-wire serial

– 20mA Sink/Source Capability

interface that operates at clock rates up to 50MHz. It

•

Power-On Reset to Zero-Scale or Midscale

is

compatible

with

standard

SPI

™,

QSPI

™,

Microwire

™, and digital signal processor (DSP)

•

Asynchronous Clear to Zero-Scale or Midscale

interfaces.

•

Ultra-Low Power Operation: 1mA at 5V

The DAC8565 incorporates a power-on-reset circuit

•

Wide Power Supply Range: +2.7V to +5.5V

that ensures the DAC output powers up at either

•

16-Bit Monotonic Over Temperature Range

zero-scale or midscale until a valid code is written to

•

Settling Time: 10

μs to ±0.003% Full-Scale

the device. The device contains a power-down

Range (FSR)

feature, accessed over the serial interface, that

reduces the current consumption of the device to

•

Low-Power Serial Interface with

1.3

μA at 5V. The low power consumption, internal

Schmitt-Triggered Inputs: Up to 50MHz

reference, and small footprint make this device ideal

•

On-Chip Output Buffer Amplifier with

for portable, battery-operated equipment. The power

Rail-to-Rail Operation

consumption is 2.9mW at 3V, reducing to 1.5

μW in

•

1.8V to 5.5V Logic Compatibility

power-down mode.

•

Temperature Range:

–40°C to +105°C

The DAC8565 is drop-in and functionally compatible

with the DAC7564 and DAC8164, and functionally

APPLICATIONS

compatible

with

the

DAC7565,

DAC8165,

and

DAC8564. All these devices are available in a

•

Portable Instrumentation

TSSOP-16 package.

•

Closed-Loop Servo-Control

•

Process Control, PLCs

•

Data Acquisition Systems

•

Programmable Attenuation

•

PC Peripherals

RELATED

DEVICES

16-BIT

14-BIT

12-BIT

Pin and

Functionally

DAC8565

DAC8165

DAC7565

Compatible

Functionally

DAC8564

DAC8164

DAC7564

Compatible

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

SPI, QSPI are trademarks of Motorola, Inc.

3

Microwire is a trademark of National Semiconductor.

4

All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright

© 2007–2011, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.