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
H
(DAC7724) or to a zero-scale of 000
H
(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.
APPLICATIONS
q
PROCESS CONTROL
q
CLOSED-LOOP SERVO-CONTROL
q
MOTOR CONTROL
q
DATA ACQUISITION SYSTEMS
GND
V
DD
V
CC
V
REFH
12
DB0-DB11
I/O
Buffer
Input
Register A
DAC
Register A
DAC A
V
OUTA
Input
Register B
DAC
Register B
DAC B
V
OUTB
A0
A1
R/W
CS
Control
Logic
Input
Register C
DAC
Register C
DAC C
V
OUTC
Input
Register D
DAC
Register D
DAC D
V
OUTD
RESET
LDAC
V
REFL
V
SS
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
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.
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.
®
DAC7724, 7725
2
SPECIFICATION (SINGLE SUPPLY)
At T
A
= –40°C to +85°C, V
CC
= +15V, V
DD
= +5V, V
SS
= GND, V
REFH
= +10V, V
REFL
= 0V, unless otherwise noted.
DAC7724N, U
DAC7725N, U
PARAMETER
ACCURACY
Linearity Error
(1)
Linearity Matching
(3)
Differential Linearity Error
Monotonicity
Zero-Scale Error
Zero-Scale Drift
Zero-Scale Matching
(3)
Full-Scale Error
Full-Scale Matching
(3)
Power Supply Sensitivity
ANALOG OUTPUT
Voltage Output
(4)
Output Current
Load Capacitance
Short-Circuit Current
Short-Circuit Duration
REFERENCE INPUT
V
REFH
Input Range
V
REFL
Input Range
Ref High Input Current
Ref Low Input Current
DYNAMIC PERFORMANCE
Settling Time
(5)
Channel-to-Channel Crosstalk
Digital Feedthrough
Output Noise Voltage
DIGITAL INPUT/OUTPUT
Logic Family
Logic Levels
V
IH
V
IL
V
OH
V
OL
Data Format
POWER SUPPLY REQUIREMENTS
V
DD
V
CC
I
DD
I
CC
Power Dissipation
TEMPERATURE RANGE
Specified Performance
To
±0.012%,
10V Output Step
CONDITIONS
MIN
TYP
MAX
±2
±2
±1
T
MIN
to T
MAX
Code = 004
H
12
±4
2
Code = FFF
H
At Full Scale
V
REFL
±5
No Oscillation
To V
CC
or GND
V
REFL
+1.25
0
–0.3
–2.0
8
0.25
2
65
500
±20
Indefinite
+10
V
REFH
– 1.25
1.5
0
10
T
T
T
T
T
T
T
T
T
T
T
T
T
+5.25
15.75
50
3.0
45
–40
+85
T
T
T
T
T
T
T
T
T
T
V
V
µA
mA
mW
°C
T
T
T
T
V
V
V
V
20
V
REFH
T
T
T
T
T
T
T
T
T
T
T
±4
±4
±4
T
T
T
±2
T
±2
T
T
MIN
DAC7724NB, UB
DAC7725NB, UB
TYP
MAX
±1
±1
±1
UNITS
LSB
(2)
LSB
LSB
Bits
LSB
ppm/°C
LSB
LSB
LSB
ppm /V
V
mA
pF
mA
V
V
mA
mA
µs
LSB
nV-s
nV/√Hz
f = 10kHz
TTL-Compatible CMOS
I
IH
≤ ±10µA
I
IL
≤ ±10µA
I
OH
= –0.8mA
I
OL
= 1.6mA
2.4
–0.3
3.6
0.0
Straight Binary
+4.75
14.25
V
DD
+0.3
0.8
V
DD
0.4
T
NOTES: (1) If V
SS
= 0V, specification applies at code 004
H
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
H
to 004
H
.
®
3
DAC7724, 7725
ABSOLUTE MAXIMUM RATINGS
(1)
V
CC
to V
SS
........................................................................... –0.3V to +32V
V
CC
to GND ......................................................................... –0.3V to +16V
V
SS
to GND ......................................................................... +0.3V to –16V
V
DD
to GND ............................................................................. –0.3V to 6V
V
REF
H to GND ....................................................................... –9V to +11V
V
REF
L to GND (V
SS
= –15V) ................................................. –11V to +9V
V
REF
L to GND (V
SS
= 0V) .................................................... –0.3V to +9V
V
REFH
to V
REFL
....................................................................... –1V to +22V
Digital Input Voltage to GND ................................... –0.3V to V
DD
+ 0.3V
Digital Output Voltage to GND ................................. –0.3V to V
DD
+ 0.3V
Maximum Junction Temperature ................................................... +150°C
Operating Temperature Range ........................................ –40°C to +85°C
Storage Temperature Range ......................................... –65°C to +150°C
Lead Temperature (soldering, 10s) ............................................... +300°C
NOTE: (1) Stresses above those listed under “Absolute Maximum Ratings”
may cause permanent damage to the device. Exposure to absolute maximum
conditions for extended periods may affect device reliability.
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Burr-Brown
recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage.
ESD damage can range from subtle performance degradation
to complete device failure. Precision integrated circuits may
be more susceptible to damage because very small parametric
changes could cause the device not to meet its published
specifications.
PACKAGE/ORDERING INFORMATION
MAXIMUM
LINEARITY
ERROR
(LSB)
±2
MAXIMUM
DIFFERENTIAL
NONLINEARITY ERROR
(LSB)
±1
PACKAGE
DRAWING
NUMBER
251
SPECIFICATION
TEMPERATURE
RANGE
–40°C to +85°C
PRODUCT
DAC7724N
PACKAGE
PLCC-28
ORDERING
NUMBER
(1)
DAC7724N
DAC7724N/750
DAC7724NB
DAC7724NB/750
DAC7724U
DAC7724U/1K
DAC7724UB
DAC7724UB/1K
DAC7725N
DAC7725N/750
DAC7725NB
DAC7725NB/750
DAC7725U
DAC7725U/1K
DAC7725UB
DAC7725UB/1K
TRANSPORT
MEDIA
Rails
Tape and Reel
Rails
Tape and Reel
Rails
Tape and Reel
Rails
Tape and Reel
Rails
Tape and Reel
Rails
Tape and Reel
Rails
Tape and Reel
Rails
Tape and Reel
"
DAC7724NB
"
±1
"
±1
"
PLCC-28
"
251
"
–40°C to +85°C
"
DAC7724U
"
±2
"
±1
"
SO-28
"
217
"
–40°C to +85°C
"
DAC7724UB
"
±1
"
±1
"
SO-28
"
217
"
–40°C to +85°C
"
DAC7725N
"
±2
"
±1
"
PLCC-28
"
251
"
–40°C to +85°C
"
DAC7725NB
"
±1
"
±1
"
PLCC-28
"
251
"
–40°C to +85°C
"
DAC7725U
"
±2
"
±1
"
SO-28
"
217
"
–40°C to +85°C
"
DAC7725UB
"
±1
"
±1
"
SO-28
"
217
"
–40°C to +85°C
"
"
"
"
"
"
NOTE: (1) Models with a slash (/) are available only in Tape and Reel in the quantities indicated (e.g., /750 indicates 750 devices per reel). Ordering 750 pieces
of “DAC7724/750” will get a single 750-piece Tape and Reel.
ESD PROTECTION CIRCUITS
V
CC
V
CC
RefH
V
OUT
RefL
V
SS
V
SS
1 of 4
V
DD
GND
V
DD
Typ of Each
Logic Input Pin
Typ of Each
I/O Pin
®
DAC7724, 7725
4
PIN CONFIGURATIONS
Top View
SO
V
OUTA
PLCC
V
OUTC
V
OUTD
V
OUTB
V
REFH
V
REFL
V
REFH
V
OUTB
V
OUTA
V
SS
GND
RESET
LDAC
(LSB) DB0
DB1
1
2
3
4
5
6
7
8
9
DAC7724
DAC7725
28
27
26
25
24
23
22
21
20
19
18
17
16
15
V
REFL
V
OUTC
V
OUTD
V
CC
V
DD
CS
A0
A1
R/W
DB11 (MSB)
DB10
DB9
DB8
DB7
V
SS
4
3
2
1
28
27
26
25
V
CC
24
V
DD
23
CS
GND
RESET
LDAC
(LSB) DB0
DB1
5
6
7
8
9
DAC7724
DAC7725
22
A0
21
A1
20
R/W
DB2
10
19
DB11 (MSB)
DB3
11
12
DB4
DB2 10
DB3 11
DB4 12
DB5 13
DB6 14
13
DB5
14
DB6
15
DB7
16
DB8
17
DB9
18
DB10
PIN DESCRIPTIONS
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
NAME
V
REFH
V
OUTB
V
OUTA
V
SS
GND
RESET
LDAC
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
DB8
DB9
DB10
DB11
R/W
A1
A0
CS
V
DD
V
CC
V
OUTD
V
OUTC
V
REFL
DESCRIPTION
Reference Input Voltage High. Sets maximum output voltage for all DACs.
DAC B Voltage Output.
DAC A Voltage Output.
Negative Analog Supply Voltage, 0V or –15V.
Ground.
Asynchronous Reset Input. Sets DAC and input registers to either mid-scale (800
H
, DAC7724) or zero-scale (000
H
, DAC7725)
when LOW.
Load DAC Input. All DAC Registers are transparent when LOW.
Data Bit 0. Least significant bit of 12-bit word.
Data Bit 1
Data Bit 2
Data Bit 3
Data Bit 4
Data Bit 5
Data Bit 6
Data Bit 7
Data Bit 8
Data Bit 9
Data Bit 10
Data Bit 11. Most significant bit of 12-bit word.
Read/Write Control Input (read = HIGH, write = LOW).
Register/DAC Select (C or D = HIGH, A or B = LOW).
Register/DAC Select (B or D = HIGH, A or C = LOW).
Chip Select Input.
Positive Digital Supply, +5V.
Positive Analog Supply Voltage, +15V nominal.
DAC D Voltage Output.
DAC C Voltage Output.
Reference Input Voltage Low. Sets minimum output voltage for all DACs.
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