mode of the internal input registers. An asynchronous
reset clears all registers to a mid-scale code of 800
H
(DAC7624) or to a zero-scale of 000
H
(DAC7625). The
DAC7624 and DAC7625 can operate from a single +5V
supply or from +5V and –5V supplies.
Low power and small size per DAC make the DAC7624
and DAC7625 ideal for automatic test equipment,
DAC-per-pin programmers, data acquisition systems,
and closed-loop servo-control. The DAC7624 and
DAC7625 are available in a 28-pin plastic double-
wide or a 28-lead SOIC package, and offer guaranteed
specifications over the –40°C to +85°C temperature
range.
APPLICATIONS
q
PROCESS CONTROL
q
ATE PIN ELECTRONICS
q
CLOSED-LOOP SERVO-CONTROL
q
MOTOR CONTROL
q
DATA ACQUISITION SYSTEMS
q
DAC-PER-PIN PROGRAMMERS
GND
V
DD
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 • Twx: 910-952-1111
and above. (2) LSB means Least Significant Bit, when V
REFH
equals +2.5V and V
REFL
equals –2.5V,
then one LSB equals 1.22mV. (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) If V
SS
= –5V, full-scale 5V step. If V
SS
= 0V, full-scale positive 2.5V step and negative step from code FFF
H
to 00A
H
.
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.
®
DAC7624/7625
2
ABSOLUTE MAXIMUM RATINGS
(1)
V
DD
to V
SS
............................................................................. –0.3V to 11V
V
DD
to GND .......................................................................... –0.3V to 5.5V
V
REFL
to V
SS
.............................................................. –0.3V to (V
DD
– V
SS
)
V
DD
to V
REFH
............................................................. –0.3V to (V
DD
– V
SS
)
V
REFH
to V
REFL
.......................................................... –0.3V to (V
DD
– V
SS
)
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
±2
±1
±1
±2
±2
±1
±1
MAXIMUM
DIFFERENTIAL
LINEARITY
ERROR (LSB)
±1
±1
±1
±1
±1
±1
±1
±1
SPECIFICATION
TEMPERATURE
RANGE
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
PACKAGE
DRAWING
NUMBER
(1)
215
217
215
217
215
217
215
217
PRODUCT
DAC7624P
DAC7624U
DAC7624PB
DAC7624UB
DAC7625P
DAC7625U
DAC7625PB
DAC7625UB
PACKAGE
28-Pin Plastic DIP
28-Lead SOIC
28-Pin Plastic DIP
28-Lead SOIC
28-Pin Plastic DIP
28-Lead SOIC
28-Pin Plastic DIP
28-Lead SOIC
NOTE: (1) For detailed drawing and dimension table, please see end of data sheet, or Appendix C of Burr-Brown IC Data Book.
®
3
DAC7624/7625
PIN CONFIGURATIONS
Top View
DIP
SOIC
V
REFH
V
OUTB
V
OUTA
V
SS
GND
RESET
LDAC
(LSB) DB0
DB1
1
2
3
4
5
6
7
8
9
DAC7624
DAC7625
28
27
26
25
24
23
22
21
20
19
18
17
16
15
V
REFL
V
OUTC
V
OUTD
V
DD
NIC
CS
A0
A1
R/W
DB11 (MSB)
DB10
DB9
DB8
DB7
V
REFH
V
OUTB
V
OUTA
V
SS
GND
RESET
LDAC
(LSB) DB0
DB1
1
2
3
4
5
6
7
8
9
DAC7624
DAC7625
28
27
26
25
24
23
22
21
20
19
18
17
16
15
V
REFL
V
OUTC
V
OUTD
V
DD
NIC
CS
A0
A1
R/W
DB11 (MSB)
DB10
DB9
DB8
DB7
DB2 10
DB3 11
DB4 12
DB5 13
DB6 14
DB2 10
DB3 11
DB4 12
DB5 13
DB6 14
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
NIC
V
DD
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 –5V.
Ground.
Asynchronous Reset Input. Sets DAC and input registers to either mid-scale (800
H
, DAC7624) or zero-scale (000
H
, DAC7625)
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.
Not Internally Connected. Pin has no internal connection to the device.
Positive Analog Supply Voltage, +5V nominal.
DAC D Voltage Output.
DAC C Voltage Output.
Reference Input Voltage Low. Sets minimum output voltage for all DACs.
DAC7624/7625
4
TYPICAL PERFORMANCE CURVES: V
SS
= 0V
At T
A
= +25°C, V
DD
= +5V, V
SS
= 0V, V
REFH
= +2.5V, V
REFL
= 0V, representative unit, unless otherwise specified.
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