20k

10k

Logic

+V Out

REF

Inv In

Inv Out

V In

REF

BPO A

V A

OUT

BPO B

V B

OUT

AGND

DGND

10V

Ref

DAC A

DAC B

DAC2814

Serial

Data

Out

Serial

Data and

Control In

DAC2814

FEATURES

COMPLETE DUAL DAC --

INCLUDES INTERNAL REFERENCES AND
OUTPUT AMPLIFIERS

GUARANTEED SPECIFICATIONS OVER

TEMPERATURE

GUARANTEED MONOTONIC OVER

TEMPERATURE

DESCRIPTION

The DAC2814 is one in a family of dual and quad 12-
bit digital-to-analog converters. Serial, 8-bit, 12-bit
interfaces are available.

The DAC2814 is complete. It contains CMOS logic,
switches, a high-performance buried-zener reference,
and low-noise bipolar output amplifiers. No external
components are required for either unipolar 0 to 10V,
0 to 10V, or bipolar

10V output ranges.

The DAC2814 has a high-speed serial interface
capable of being clocked at 10MHz. Serial data are
clocked DAC B MSB first into a 24-bit shift register,
then strobed into each DAC separately or simulta-
neously as required. The DAC has an asynchronous
clear control for reset to unipolar or bipolar zero
depending on the mode selected. This feature is useful
for power-on reset or system calibration. The DAC2814
is packaged in a 24-pin plastic DIP rated for the 40

to +85

C extended industrial temperature range.

High-stability laser-trimmed thin film resistors assure
high reliability and true 12-bit integral and differential
linearity over the full specified temperature range.

DUAL 12-BIT DIGITAL-TO-ANALOG

CONVERTER (Serial Interface)

HIGH-SPEED SERIAL INTERFACE

(10MHz CLOCK)

LOW POWER: 300mW (150mW/DAC)

LOW GAIN DRIFT: 5ppm/

LOW NONLINEARITY:

1/2 LSB max

UNIPOLAR OR BIPOLAR OUTPUT

CLEAR/RESET TO UNIPOLAR OR

BIPOLAR ZERO

International Airport Industrial Park ˇ Mailing Address: PO Box 11400 ˇ Tucson, AZ 85734 ˇ Street Address: 6730 S. Tucson Blvd. ˇ Tucson, AZ 85706

Tel: (520) 746-1111 ˇ Twx: 910-952-1111 ˇ Cable: BBRCORP ˇ Telex: 066-6491 ˇ FAX: (520) 889-1510 ˇ Immediate Product Info: (800) 548-6132

Š 1991 Burr-Brown Corporation

PDS-1103B

Printed in U.S.A. October, 1993

DAC2814

SPECIFICATIONS

, Guaranteed over T

= 40

C to +85

C unless otherwise specified.

ELECTRICAL

Specifications as shown for V

12V or

15V, V

= +5V, and R

= 2k

unless otherwise noted.

DAC2814AP

DAC2814BP

PARAMETER

CONDITIONS

MIN

TYP

MAX

MIN

TYP

MAX

UNITS

DIGITAL INPUTS
Resolution

Bits

(Input High Voltage)

(Input Low Voltage)

+0.8

( Input Current)

= 25

= 40

C to +85

(Input Capacitance)

0.8

DIGITAL OUTPUT
Data Out V

SINK

= 1.6mA

+0.4

SOURCE

= 500

+2.4

ACCURACY
Integral, Relative Linearity

(1)

1/2

LSB

Differential Nonlinearity

(2)

= 25

LSB

= 40

C to +85

+1.5/1

LSB

Unipolar Offset Error

= +25

0.5

= 40

C TO +85

Bipolar Zero Error

Gain Error Unipolar, Bipolar

With Internal or External 10.0V Ref

0.2

0.15

Power Supply Sensitivity

(3)

11.4V to

18V

ppmFSR/V

= +4.5V to +5.5V

TEMPERATURE DRIFT
Gain Drift Unipolar, Bipolar

ppm/

Unipolar Offset Drift

0.1

ppmFSR/

Bipolar Zero Drift

ppmFSR/

REFERENCE OUTPUT
Output Voltage

+9.980

+10

+10.020

+9.985

+10.015

Reference Drift

ppm/

Output Current

= 25

+10/5

= 40

C to +85

+6.5/5

Max Load Capacitance (For Stability)

500

Short Circuit Current

Load Regulation

ppm/mA

(

OUT

LOAD

)

Supply Regulation

ppm/V

(

OUT

)

INVERTER
10V Reference

(4)

, Inverter Output

10.020

9.980

10.015

9.985

10V Reference Drift

ppm/

DC Output Impedance

0.1

Output Current

Max Load Capacitance (For Stability)

200

Short Circuit Current

REFERENCE INPUT
Reference Input Resistance

3.5

Inverter Input Resistance

BPO Input Resistance

Reference Input Range

ANALOG SIGNAL OUTPUTS
Voltage Range

+ 1.4

1.4

DC Output Impedance

0.1

Output Current

Max Load Capacitance (For Stability)

OUT

500

Short Circuit Current

DYNAMIC PERFORMANCE

(5)

= 100pF

Unipolar Mode Settling Time

To 1/2 LSB of Full Scale

2.5

Bipolar Mode Settling Time

To 1/2 LSB of Full Scale

3.5

Slew Rate

Small-Signal Bandwidth

MHz

ANALOG GROUND CURRENT
(Code Dependent)

DIGITAL CROSSTALK

Full Scale Transition

nV-s

= 100pF

D/A GLITCH IMPULSE

nV-s

DAC2814

POWER SUPPLY
+V

and V

11.4

4.5

5.5

+10

+13.5

13.5

Digital Inputs = 0V or +V

0.2

Digital Inputs = V

or V

Total Power, All DACs

300

410

TEMPERATURE RANGE
Specified

+85

Operating

+85

Thermal Resistance

C/W

SPECIFICATIONS

(CONT), Guaranteed over T

= 40

C to +85

C unless otherwise specified.

ELECTRICAL

Specifications as shown for V

12V or

15V, V

= +5V, and R

= 2k

unless otherwise noted.

DAC2814AP

DAC2814BP

PARAMETER

CONDITIONS

MIN

TYP

MAX

MIN

TYP

MAX

UNITS

NOTES: (1) End point linearity. (2) Guaranteed monotonic. (3) Change in bipolar full scale output. Includes voltage output DAC, voltage reference, and reference
inverter. (4) Inverter output with inverter input connected to +V

REF

. (5) Guaranteed but not tested.

The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes
no responsibility for the use of this information, and all use of such information shall be entirely at the user's own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant
any BURR-BROWN product for use in life support devices and/or systems.

ABSOLUTE MAXIMUM RATINGS

to AGND ................................................................................. 0V, +7V

to DGND ................................................................................ 0V, +7V

to AGND .............................................................................. 0V, +18V

to AGND ............................................................................... 0V,18V

AGND to DGND ................................................................................

0.3V

Any digital input to DGND .............................................. 0.3V, +V

+0.3V

Ref In to AGND ..................................................................................

25V

Ref In to DGND ..................................................................................

25V

Storage Temperature Range .......................................... 55

C to +125

Operating Temperature Range ......................................... 40

C to +85

Lead Temperature (soldering, 10s) ................................................ +300

Junction Temperature .................................................................... +155

Output Short Circuit ................................... Continuous to common or

Reference Short Circuit .............................. Continuous to common or +V

PACKAGE INFORMATION

PACKAGE DRAWING

MODEL

PACKAGE

NUMBER

(1)

DAC2814AP

24-Pin Plastic DIP

167

DAC2814BP

24-Pin Plastic DIP

167

NOTE: (1) For detailed drawing and dimension table, please see end of data
sheet, or Appendix D of Burr-Brown IC Data Book.

ELECTROSTATIC
DISCHARGE SENSITIVITY

Electrostatic discharge can cause damage ranging from
performance degradation to complete device failure. Burr-
Brown Corporation recommends that all integrated circuits be
handled and stored using appropriate ESD protection
methods.

DAC2814

PIN DESIGNATIONS

PIN

DESCRIPTOR

FUNCTION

PIN

DESCRIPTOR

FUNCTION

DGND

Digital common

Chip select enable, DAC A and DAC B

LATCH B

Latch data update, logic input, DAC B

Data In

Serial data input

CLR

Asychronous input reset to zero

LATCH A

Latch data update, logic input, DAC A

MODE

Selection input for unipolar or bipolar reset to zero

CLK

Clock input

Data Out

Serial data output

No internal connection

Positive logic power supply, +5V input

BPO A

Bipolar offset input, DAC A

Negative analog power supply , 15V input

BPO B

Bipolar offset input, DAC B

AGND

Analog common

OUT

Analog output voltage, DAC B

No internal connection

REF

Out

Reference voltage, +10V output

Positive analog power supply, +15V input

Inv In

Inverter (A3) input

REF

Reference voltage input

OUT

Analog output voltage, DAC A

Inv Out

Inverter (A3) output

No internal connection

TYPICAL PERFORMANCE CURVES

= +25

C, V

12V or

15V, V

= +5V unless otherwise noted.

PIN CONFIGURATIONS

Data In

LATCH A

CLK

BPO A

BPO B

V B

+V Out

Inv In

V A

DGND

LATCH B

CLR

MODE

Data Out

AGND

V In

Inv Out

OUT

REF

OUT

REF

NC = No Internal Connection

DAC2814

Top View

PSRR vs FREQUENCY (Bipolar Mode)

PSRR (dB)

10k

100k

Frequency (Hz)

OUT

= +10V

OUT

= 0V

NOISE vs BANDWIDTH (Bipolar Mode)

250

200

150

100

Voltage Noise (ľVrms)

100

10k

100k

Frequency (Hz)

OUT

= +10V

FFF

HEX

OUT

= 0V

800

HEX

DAC2814

TYPICAL PERFORMANCE CURVES

(CONT)

= +25

C, V

12V or

15V, V

= +5V unless otherwise noted.

FULL-SCALE OUTPUT SWING

BIPOLAR (20V Step)

Time (2ľs/div)

OUT

(5V/div)

CROSSTALK (Bipolar Mode)

Time (500ns/div)

OUT

FULL-SCALE OUTPUT SWING

UNIPOLAR (10V Step)

Time (2ľs/div)

OUT

(5V/div)

OUT

LATCH

OUT

LATCH A

NOTE: Crosstalk is dominated by digital crosstalk/
feedthrough of the LATCH signal.

+5V

OUT

+5V

CHANGE OF GAIN, BIPOLAR OFFSET AND ZERO ERROR

vs TEMPERATURE

+1.5

+1.0

+0.5

0.5

1.0

1.5

Bipolar Offset and Zero Error (mV)

Temperature (°C)

+0.015

+0.01

+0.005

0.005

0.01

0.015

Gain Error (%)

Bipolar Offset

Gain Error

Bipolar Zero

POWER SUPPLY CURRENT vs TEMPERATURE

11.8

11.6

11.4

11.2

10.8

10.6

10.4

ąI

(mA) Analog Supply

Temperature (°C)

(mA) Logic Supply

1.4

1.2

0.8

0.6

0.4

0.2

(All Logic Inputs = 2V)

(All Logic Inputs = 0V or V

)

OUTPUT VOLTAGE SWING vs RESISTOR LOAD

Load Resistance ( )

OUT

(Vp-p)

100

10k

= ą15V

= 5V

10V REF

Part Number DAC2814