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12-Bit Quad Voltage Output

DIGITAL-TO-ANALOG CONVERTER

DAC7724

DAC7725

DESCRIPTION

The DAC7724 and DAC7725 are 12-bit quad voltage

output digital-to-analog converters with guaranteed

12-bit monotonic performance over the specified tem-

perature range. They accept 12-bit parallel input data,

have double-buffered DAC input logic (allowing simul-

taneous update of all DACs), and provide a readback

mode of the internal input registers. An asynchronous

reset clears all registers to a mid-scale code of 800

(DAC7724) or to a zero-scale of 000

(DAC7725). The

DAC7724 and DAC7725 can operate from a single

+15V supply, or from +15V and –15V supplies.

Low power and small size per DAC make the DAC7724

and DAC7725 ideal for automatic test equipment,

DAC-per-pin programmers, data acquisition systems,

and closed-loop servo-control. The DAC7724 and

DAC7725 are available in a PLCC-28 or a SO-28

package, and offer guaranteed specifications over the

–40°C to +85°C temperature range.

FEATURES

● LOW POWER: 250mW max

● SINGLE SUPPLY OUTPUT RANGE: +10V

● DUAL SUPPLY OUTPUT RANGE: ±10V

● SETTLING TIME: 10µs to 0.012%

● 12-BIT LINEARITY AND MONOTONICITY:

–40°C to +85°C

● RESET TO MID-SCALE (DAC7724) OR

ZERO-SCALE (DAC7725)

● DATA READBACK

● DOUBLE-BUFFERED DATA INPUTS

APPLICATIONS

● PROCESS CONTROL

● CLOSED-LOOP SERVO-CONTROL

● MOTOR CONTROL

● DATA ACQUISITION SYSTEMS

International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111

Twx: 910-952-1111 • Internet: http://www.burr-brown.com/ • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132

DAC A

DAC

Input

I/O

Buffer

Control

Logic

DAC B

DAC

Input

DAC C

DAC

Input

DAC D

DAC

Input

REFH

OUTD

OUTC

OUTB

OUTA

REFL

RESET LDAC

GND

R/W

DB0-DB11

For most current data sheet and other product

information, visit www.burr-brown.com

DAC7724

DAC7725

DAC7724, 7725

SPECIFICATION (DUAL SUPPLY)

At T

= –40°C to +85°C, V

= +15V, V

= +5V, V

= –15V, V

REFH

= +10V, V

REFL

= –10V, unless otherwise noted.

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.

DAC7724N, U DAC7724NB, UB

DAC7725N, U DAC7725NB, UB

PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS

ACCURACY

Linearity Error ±2 ±1 LSB

(1)

Linearity Matching

(2)

±2 ±1 LSB

Differential Linearity Error ±1 ±1 LSB

Monotonicity T

MIN

to T

MAX

12 ✻ Bits

Zero-Scale Error Code = 000

±2 ✻ LSB

Zero-Scale Drift 1 ✻ ppm/°C

Zero-Scale Matching

(2)

±2 ±1 LSB

Full-Scale Error Code = FFF

±2 ✻ LSB

Full-Scale Matching

(2)

±2 ±1 LSB

Power Supply Sensitivity At Full Scale 10 ✻ ppm/V

ANALOG OUTPUT

Voltage Output

(3)

REFL

REFH

✻✻V

Output Current ±5 ✻✻mA

Load Capacitance No Oscillation 500 ✻ pF

Short-Circuit Current ±20 ✻ mA

Short-Circuit Duration To V

, V

, or GND Indefinite ✻

REFERENCE INPUT

REFH

Input Range

REFL

+1.25

+10 ✻✻V

REFL

Input Range –10

REFH

– 1.25

✻✻V

Ref High Input Current –0.5 3.0 ✻✻mA

Ref Low Input Current –3.5 0 ✻✻mA

DYNAMIC PERFORMANCE

Settling Time To ±0.012%, 20V Output Step 8 10 ✻✻ µs

Channel-to-Channel Crosstalk

Full-Scale Step

0.25 ✻ LSB

Digital Feedthrough 2 ✻ nV-s

Output Noise Voltage f = 10kHz 65 ✻ nV/√Hz

DIGITAL INPUT/OUTPUT

Logic Family TTL-Compatible CMOS ✻

Logic Levels

≤ ±10µA 2.4 V

+0.3 ✻✻V

≤ ±10µA –0.3 0.8 ✻✻V

= –0.8mA 3.6 V

✻✻V

= 1.6mA 0.0 0.4 ✻✻V

Data Format Straight Binary ✻

POWER SUPPLY REQUIREMENTS

+4.75 +5.25 ✻✻V

+14.25 +15.75 ✻✻V

–14.25 –15.75 ✻✻V

50 ✻✻ µA

6 8.5 ✻✻ mA

–8 –6 ✻✻ mA

Power Dissipation 180 250 ✻✻ mW

TEMPERATURE RANGE

Specified Performance –40 +85 ✻✻°C

NOTES: (1) LSB means Least Significant Bit, when V

REFH

equals +10V and V

REFL

equals –10V, then one LSB equals 4.88mV. (2) All DAC outputs will match within

the specified error band. (3) Ideal output voltage, does not take into account zero or full-scale error.

DAC7724, 7725

SPECIFICATION (SINGLE SUPPLY)

At T

= –40°C to +85°C, V

= +15V, V

= +5V, V

= GND, V

REFH

= +10V, V

REFL

= 0V, unless otherwise noted.

DAC7724N, U DAC7724NB, UB

DAC7725N, U DAC7725NB, UB

PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS

ACCURACY

Linearity Error

(1)

±2 ±1 LSB

(2)

Linearity Matching

(3)

±2 ±1 LSB

Differential Linearity Error ±1 ±1 LSB

Monotonicity T

MIN

to T

MAX

12 ✻ Bits

Zero-Scale Error Code = 004

±4 ✻ LSB

Zero-Scale Drift 2 ✻ ppm/°C

Zero-Scale Matching

(3)

±4 ±2 LSB

Full-Scale Error Code = FFF

±4 ✻ LSB

Full-Scale Matching

(3)

±4 ±2 LSB

Power Supply Sensitivity At Full Scale 20 ✻ ppm/V

ANALOG OUTPUT

Voltage Output

(4)

REFL

REFH

✻✻V

Output Current ±5 ✻ mA

Load Capacitance No Oscillation 500 ✻ pF

Short-Circuit Current ±20 ✻ mA

Short-Circuit Duration To V

or GND Indefinite ✻

REFERENCE INPUT

REFH

Input Range

REFL

+1.25

+10 ✻✻V

REFL

Input Range 0

REFH

– 1.25

✻✻V

Ref High Input Current –0.3 1.5 ✻✻mA

Ref Low Input Current –2.0 0 ✻✻mA

DYNAMIC PERFORMANCE

Settling Time

(5)

To ±0.012%, 10V Output Step 8 10 ✻✻ µs

Channel-to-Channel Crosstalk 0.25 ✻ LSB

Digital Feedthrough 2 ✻ nV-s

Output Noise Voltage f = 10kHz 65 ✻ nV/√Hz

DIGITAL INPUT/OUTPUT

Logic Family TTL-Compatible CMOS ✻

Logic Levels

≤ ±10µA 2.4 V

+0.3 ✻✻V

≤ ±10µA –0.3 0.8 ✻✻V

= –0.8mA 3.6 V

✻✻V

= 1.6mA 0.0 0.4 ✻✻V

Data Format Straight Binary ✻

POWER SUPPLY REQUIREMENTS

+4.75 +5.25 ✻✻V

14.25 15.75 ✻✻V

50 ✻✻ µA

3.0 ✻✻ mA

Power Dissipation 45 ✻ mW

TEMPERATURE RANGE

Specified Performance –40 +85 ✻✻°C

NOTES: (1) If V

= 0V, specification applies at code 004

and above. (2) LSB means Least Significant Bit, when V

REFH

equals +10V and V

REFL

equals 0V, then

one LSB equals 2.44mV. (3) All DAC outputs will match within the specified error band. (4) Ideal output voltage, does not take into account zero or full-scale error.

(5) Full-scale positive 10V step and negative step from code FFF

to 004

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