TEXAS INSTRUMENTS DAC7624 Technical data
®
DAC7624
DAC7625
DAC7624
DAC7625
12-Bit Quad Voltage Output
DIGITAL-TO-ANALOG CONVERTER
FEATURES
● LOW POWER: 20mW
● UNIPOLAR OR BIPOLAR OPERATION
● SETTLING TIME: 10µs to 0.012%
● 12-BIT LINEARITY AND MONOTONICITY:
–40°C to +85°C
● RESET TO MID-SCALE (DAC7624) OR
ZERO-SCALE (DAC7625)
● DATA READBACK
● DOUBLE-BUFFERED DATA INPUTS
APPLICATIONS
● PROCESS CONTROL
● ATE PIN ELECTRONICS
● CLOSED-LOOP SERVO-CONTROL
● MOTOR CONTROL
● DATA ACQUISITION SYSTEMS
● DAC-PER-PIN PROGRAMMERS
GND
DESCRIPTION
The DAC7624 and DAC7625 are 12-bit quad voltage
output digital-to-analog converters with guaranteed 12bit monotonic performance over the specified temperature range. They accept 12-bit parallel input data, have
double-buffered DAC input logic (allowing simultaneous 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
(DAC7624) or to a zero-scale of 000H (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 doublewide or a 28-lead SOIC package, and offer guaranteed
specifications over the –40°C to +85°C temperature
range.
V
V
REFH
DD
H
SBAS083
12
DB0-DB11
A0
A1
R/W
CS
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/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
© 1997 Burr-Brown Corporation PDS-1419C Printed in U.S.A. April, 2000
I/O
Buffer
Control
Logic
Input
Register A
Input
Register B
Input
Register C
Input
Register D
1
DAC
Register A
DAC
Register B
DAC
Register C
DAC
Register D
V
REFLRESET LDAC
DAC A
DAC B
DAC C
DAC D
V
V
V
V
V
SS
DAC7624/7625
OUTA
OUTB
OUTC
OUTD
®
SPECIFICATION
At TA = –40°C to +85°C, VDD = +5V, VSS = –5V, V
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
ACCURACY
Linearity Error
Linearity Matching
(1)
(3)
Differential Linearity Error VSS = 0V or –5V ±1 ±1 LSB
Monotonicity T
Zero-Scale Error Code = 000
Zero-Scale Drift 25 ✻✻ppm/°C
Zero-Scale Matching
Full-Scale Error Code = FFF
Full-Scale Matching
(3)
(3)
Zero-Scale Error Code = 00A
Zero-Scale Drift VSS = 0V 5 10 ✻✻ppm/°C
Zero-Scale Matching
(3)
Full-Scale Error Code = FFF
Full-Scale Matching
(3)
Power Supply Rejection 30 ✻ ppm/V
ANALOG OUTPUT
Voltage Output
(4)
Output Current –1.25 +1.25 ✻✻mA
Load Capacitance No Oscillation 100 ✻ pF
Short-Circuit Current +5, –120 ✻ mA
Short-Circuit Duration
REFERENCE INPUT
V
Input Range VSS = 0V or –5V
REFH
V
Input Range VSS = 0V 0
REFL
V
Input Range VSS = –5V –2.5
REFL
DYNAMIC PERFORMANCE
Settling Time
(5)
Channel-to-Channel Crosstalk
Output Noise Voltage 0Hz to 1MHz 40 ✻ nV/√Hz
DIGITAL INPUT/OUTPUT
Logic Family TTL-Compatible CMOS ✻
Logic Levels
V
IH
V
IL
V
OH
V
OL
Data Format Straight Binary ✻
POWER SUPPLY REQUIREMENTS
V
DD
V
SS
I
DD
I
SS
Power Dissipation VSS = –5V 15 20 ✻✻ mW
TEMPERATURE RANGE
Specified Performance DAC7624P, U, PB, UB –40 +85 ✻✻°C
NOTES: (1) If VSS = 0V, specification applies at code 00AH and above. (2) LSB means Least Significant Bit, when V
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
= –5V, full-scale 5V step. If VSS = 0V, full-scale positive 2.5V step and negative step from code FFFH to 00AH.
SS
REFH
= +2.5V, V
= –2.5V, unless otherwise noted.
REFL
DAC7624P, U DAC7624PB, UB
DAC7625P, U DAC7625PB, UB
VSS = 0V or –5V ±2 ±1 LSB
VSS = 0V or –5V ±2 ±1 LSB
MIN
to T
MAX
H
12 ✻ Bits
±4 ✻ LSB
±2 ±1 LSB
H
±4 ✻ LS
±2 ±1 LSB
, VSS = 0V ±8 ✻ LSB
H
VSS = 0V ±4 ±2 LSB
, VSS = 0V ±8 ✻ LSB
H
VSS = 0V ±4 ±2 LSB
V
= 0V, VSS = 0V 0 V
REFL
V
= –5V V
SS
REFL
Momentary
V
+1.25
REFL
REFH
V
REFH
+2.5 ✻✻V
V
–1.25
REFH
V
–1.25
REFH
✻✻V
✻✻V
✻
✻✻V
✻✻V
To ±0.012% 5 10 ✻✻ µs
Full-Scale Step
0.25 ✻ LSB
On any other DAC
IIH ≤ ±10µA 2.4 VDD +0.3 ✻✻V
IIL ≤ ±10µA –0.3 0.8 ✻✻V
IOH = –0.8mA 3.6 V
DD
✻✻V
IOL = 1.6mA 0.0 0.4 ✻✻V
4.75 5.25 ✻✻V
If VSS ≠ 0V –5.25 –4.75 ✻✻V
1.5 1.9 ✻✻ mA
–2.1 –1.6 ✻✻ mA
= 0V 7.5 10 ✻✻ mW
V
SS
DAC7625P, U, PB, UB
equals +2.5V and V
REFH
REFL
(2)
equals –2.5V,
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
V
to VSS............................................................................. –0.3V to 11V
DD
to GND .......................................................................... –0.3V to 5.5V
V
DD
to VSS..............................................................–0.3V to (V
V
REFL
to V
V
DD
V
REFH
Digital Input Voltage to GND ................................... –0.3V to V
Digital Output Voltage to GND ................................. –0.3V to V
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.
............................................................. –0.3V to (V
REFH
to V
..........................................................–0.3V to (V
REFL
(1)
ELECTROSTATIC
DISCHARGE SENSITIVITY
– VSS)
DD
DD
DD
+ 0.3V
DD
+ 0.3V
DD
– VSS)
– VSS)
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 DIFFERENTIAL SPECIFICATION PACKAGE
LINEARITY LINEARITY TEMPERATURE DRAWING
PRODUCT ERROR (LSB) ERROR (LSB) RANGE PACKAGE NUMBER
DAC7624P ±2 ±1 –40°C to +85°C 28-Pin Plastic DIP 215
DAC7624U ±2 ±1 –40°C to +85°C 28-Lead SOIC 217
DAC7624PB ±1 ±1 –40°C to +85°C 28-Pin Plastic DIP 215
DAC7624UB ±1 ±1 –40°C to +85°C 28-Lead SOIC 217
DAC7625P ±2 ±1 –40°C to +85°C 28-Pin Plastic DIP 215
DAC7625U ±2 ±1 –40°C to +85°C 28-Lead SOIC 217
DAC7625PB ±1 ±1 –40°C to +85°C 28-Pin Plastic DIP 215
DAC7625UB ±1 ±1 –40°C to +85°C 28-Lead SOIC 217
NOTE: (1) For detailed drawing and dimension table, please see end of data sheet, or Appendix C of Burr-Brown IC Data Book.
MAXIMUM
(1)
®
3
DAC7624/7625
PIN CONFIGURATIONS
Top View
DIP SOIC
V
REFH
V
OUTB
V
OUTA
V
GND
RESET
LDAC
(LSB) DB0
DB1
DB2
DB3
DB4
DB5
DB6
1
2
3
4
SS
5
6
7
DAC7624
DAC7625
8
9
10
11
12
13
14
V
28
V
27
V
26
V
25
NIC
24
CS
23
A0
22
A1
21
R/W
20
DB11 (MSB)
19
DB10
18
DB9
17
DB8
16
DB7
15
REFL
OUTC
OUTD
DD
V
REFH
V
OUTB
V
OUTA
GND
RESET
LDAC
(LSB) DB0
DB1
DB2
DB3
DB4
DB5
DB6
PIN DESCRIPTIONS
PIN NAME DESCRIPTION
1V
2V
3V
4V
REFH
OUTB
OUTA
SS
5 GND Ground.
6 RESET Asynchronous Reset Input. Sets DAC and input registers to either mid-scale (800
7 LDAC Load DAC Input. All DAC Registers are transparent when LOW.
8 DB0 Data Bit 0. Least significant bit of 12-bit word.
9 DB1 Data Bit 1
10 DB2 Data Bit 2
11 DB3 Data Bit 3
12 DB4 Data Bit 4
13 DB5 Data Bit 5
14 DB6 Data Bit 6
15 DB7 Data Bit 7
16 DB8 Data Bit 8
17 DB9 Data Bit 9
18 DB10 Data Bit 10
19 DB11 Data Bit 11. Most significant bit of 12-bit word.
20 R/W Read/Write Control Input (read = HIGH, write = LOW).
21 A1 Register/DAC Select (C or D = HIGH, A or B = LOW).
22 A0 Register/DAC Select (B or D = HIGH, A or C = LOW).
23 CS Chip Select Input.
24 NIC Not Internally Connected. Pin has no internal connection to the device.
25 V
26 V
27 V
28 V
DD
OUTD
OUTC
REFL
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.
when LOW.
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.
1
2
3
V
4
SS
5
6
7
DAC7624
DAC7625
8
9
10
11
12
13
14
, DAC7624) or zero-scale (000H, DAC7625)
H
V
28
V
27
V
26
V
25
NIC
24
CS
23
A0
22
A1
21
R/W
20
DB11 (MSB)
19
DB10
18
DB9
17
DB8
16
DB7
15
REFL
OUTC
OUTD
DD
®
DAC7624/7625
4
TYPICAL PERFORMANCE CURVES: VSS = 0V
LINEARITY ERROR AND
DIFFERENTIAL LINEARITY ERROR vs CODE
(DAC B)
200
H
000
H
FFF
H
Digital Input Code
DLE (LSB) LE (LSB)
0.50
0.00
–0.25
–0.50
0.50
0.25
0.00
–0.50
–0.25
0.25
400H600H800HA00HC00HE00
H
LINEARITY ERROR AND
DIFFERENTIAL LINEARITY ERROR vs CODE
(DAC D)
200
H
000
H
FFF
H
Digital Input Code
DLE (LSB) LE (LSB)
0.50
0.00
–0.25
–0.50
0.50
0.25
0.00
–0.50
–0.25
0.25
400H600H800HA00HC00HE00
H
LINEARITY ERROR vs CODE
(DAC B, –40°C and +85°C)
200
H
000
H
FFF
H
Digital Input Code
LE (LSB) LE (LSB)
0.50
0.00
–0.25
–0.50
0.50
0.25
0.00
–0.50
–0.25
0.25
400H600H800HA00HC00HE00
H
+85°C
–40°C
At TA = +25°C, VDD = +5V, VSS = 0V, V
REFH
= +2.5V, V
= 0V, representative unit, unless otherwise specified.
REFL
0.50
0.25
0.00
–0.25
–0.50
0.50
0.25
0.00
–0.25
DLE (LSB) LE (LSB)
–0.50
0.50
0.25
0.00
–0.25
–0.50
0.50
0.25
0.00
–0.25
DLE (LSB) LE (LSB)
–0.50
DIFFERENTIAL LINEARITY ERROR vs CODE
LINEARITY ERROR AND
(DAC A)
200
000
H
400H600H800HA00HC00HE00
H
Digital Input Code
LINEARITY ERROR AND
DIFFERENTIAL LINEARITY ERROR vs CODE
(DAC C)
200
000
H
400H600H800HA00HC00HE00
H
Digital Input Code
FFF
H
H
FFF
H
H
0.50
0.25
0.00
–0.25
+85°C
–0.50
0.50
0.25
0.00
LE (LSB) LE (LSB)
–0.25
–40°C
–0.50
000
200
H
H
LINEARITY ERROR vs CODE
(DAC A, –40°C and +85°C)
400H600H800HA00HC00HE00
Digital Input Code
FFF
H
H
®
5
DAC7624/7625
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