Burr Brown Products
from Texas Instruments
DAC7634
SBAS134A – JULY 2004 – REVISED AUGUST 2004
16-BIT, QUAD VOLTAGE OUTPUT
DIGITAL-TO-ANALOG CONVERTER
FEATURES
•
•
•
•
•
•
•
•
•
•
•
Low Power: 10 mW
Unipolar or Bipolar Operation
Settling Time: 10 µs to 0.003%
15-Bit Linearity and Monotonicity:
–40°C to 85°C
Programmable Reset to Mid-Scale
or Zero-Scale
Double-Buffered Data Inputs
DESCRIPTION
The DAC7634 is a 16-bit, quad voltage output, digital-
to-analog converter with specified 15-bit monotonic
performance over the specified temperature range. It
accepts 24-bit serial input data, has double-buffered
DAC input logic (allowing simultaneous update of all
DACs), and provides a serial data output for
daisy-chaining multiple DACs. Programmable asyn-
chronous reset clears all registers to a mid-scale
code of 8000
H
or to a zero-scale of 0000
H
. The
DAC7634 can operate from a single 5-V supply or
from 5-V and –5 V supplies.
Low power and small size per DAC make the
DAC7634 ideal for automatic test equipment,
DAC-per-pin programmers, data acquisition systems,
and closed-loop servo-control. The DAC7634 is avail-
able in a 48-lead SSOP package and offers specifi-
cations over the –40°C to 85°C temperature range.
V
REF
L
AB Sense
V
REF
H
AB Sense
APPLICATIONS
Process Control
Closed-Loop Servo-Control
Motor Control
Data Acquisition Systems
DAC-Per-Pin Programmers
V
DD
V
SS
V
CC
V
REF
L AB
V
REF
H AB
DAC7634
SDI
Shift
Register
SDO
Input
Register A
DAC
Register A
DAC A
V
OUT
A
V
OUT
A
Sense
Input
Register B
DAC
Register B
DAC B
V
OUT
B
V
OUT
B
Sense
CS
CLOCK
RST
RESTSEL
LDAC
LOAD
Control
Logic
Input
Register C
DAC
Register C
DAC C
V
OUT
C
V
OUT
C
Sense
Input
Register D
DAC
Register D
DAC D
V
OUT
D
V
OUT
D
Sense
AGND
DGND
V
REF
L
CD Sense
V
REF
L CD V
REF
H CD
V
REF
H
CD Sense
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2004, Texas Instruments Incorporated
DAC7634
SBAS134A – JULY 2004 – REVISED AUGUST 2004
www.ti.com
This integrated circuit can be damaged by ESD. Texas Instruments 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
PRODUCT
LINEARITY
ERROR
(LSB)
±4
±3
DIFFERENTIAL
NONLINEARITY
(LSB)
±3
±2
PACKAGE
PACKAGE
DRAWING
NUMBER
333
SPECIFICATION
TEMPERATURE
RANGE
–40°C to 85°C
DAC7634E/1K
DAC7634EB
48-Lead SSOP
333
–40°C to 85°C
DAC7634E/1K
Tape and Reel
Tape and Reel
Rails
ORDERING
NUMBER
(1)
DAC7634E
48-Lead SSOP
TRANSPORT
MEDIA
Rails
DAC7634E
DAC7634EB
(1)
Models with a slash (/) are available only in Tape and Reel in the quantities indicated (e.g., /1K indicates 1000 devices per reel).
Ordering 1000 pieces of DAC7634E/1K will get a single 1000-piece Tape and Reel.
ABSOLUTE MAXIMUM RATINGS
(1)
UNIT
V
CC
and V
DD
to V
SS
V
CC
and V
DD
to GND
V
REF
L to V
SS
V
CC
to V
REF
H
V
REF
H to V
REF
L
Digital input voltage to GND
Digital output voltage to GND
T
J
T
A
T
stg
Maximum junction temperature
Operating temperature range
Storage temperature range
Lead temperature (solder, 10s)
(1)
–0.3 V to 11 V
–0.3 V to 5.5 V
–0.3 V to (V
CC
- V
SS
)
–0.3 V to (V
CC
- V
SS
)
–0.3 V to (V
CC
- V
SS
)
–0.3 V to V
DD
+ 0.3 V
–0.3 V to V
DD
+ 0.3 V
150°C
–40°C to 85°C
–65°C to 125°C
300°C
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.
SPECIFICATIONS
At T
A
= T
MIN
to T
MAX
, V
DD
= V
CC
= 5 V, V
SS
= –5 V, V
REF
H = 2.5 V, and V
REF
L = –2.5 V, unless otherwise noted
PARAMETER
ACCURACY
Linearity error
Linearity match
Differential linearity error
Monotonicity, T
MIN
to T
MAX
Bipolar zero error
Bipolar zero error drift
Full-scale error
Full-scale error drift
Bipolar zero matching
Full-scale matching
Power supply rejection ratio (PSRR)
Channel-to-channel
matching
Channel-to-channel
matching
At full scale
14
±1
5
±1
5
±1
±1
10
±2
10
±2
10
±2
±2
100
±3
±4
±2
±3
15
±1
5
±1
5
±1
±1
10
±2
10
±2
10
±2
±2
100
±4
±2
±2
±1
±2
±3
LSB
LSB
LSB
Bits
mV
ppm/°C
mV
ppm/°C
mV
mV
ppm/V
TEST CONDITIONS
DAC7634E
MIN
TYP
MAX
MIN
DAC7634EB
TYP
MAX
UNIT
2
DAC7634
www.ti.com
SBAS134A – JULY 2004 – REVISED AUGUST 2004
SPECIFICATIONS (continued)
At T
A
= T
MIN
to T
MAX
, V
DD
= V
CC
= 5 V, V
SS
= –5 V, V
REF
H = 2.5 V, and V
REF
L = –2.5 V, unless otherwise noted
PARAMETER
ANALOG INPUT
Voltage output
Output current
Maximum load capacitance
Short-circuit current
Short-circuit duration
REFERENCE INPUT
Ref high input voltage range
Ref low input voltage range
Ref high input current
Ref low input current
DYNAMIC PERFORMANCE
Settling time
Channel-to-channel crosstalk
Digital feedthrough
Output noise voltage
DAC glitch
DIGITAL INPUT
V
IH
V
IL
I
IH
I
IL
DIGITAL OUTPUT
V
OH
V
OL
POWER SUPPLY
V
DD
V
CC
V
SS
I
CC
I
DD
I
SS
Power
–2.3
4.75
4.75
–5.25
5.0
5.0
–5.0
1.5
50
–1.5
15
20
–2.3
5.25
5.25
–4.75
2
4.75
4.75
–5.25
5.0
5.0
–5.0
1.5
50
–1.5
15
20
5.25
5.25
–4.75
2
V
V
V
mA
µA
mA
mW
I
OH
= –0.8 mA
I
OL
= 1.6 mA
3.6
4.5
0.3
0.4
3.6
4.5
0.3
0.4
V
V
0.7
×
V
DD
0.3
×
V
DD
±10
±10
0.7
×
V
DD
0.3
×
V
DD
±10
±10
V
V
µA
µA
f = 10 kHz
7FFF
H
to 8000
H
or
8000
H
to 7FFF
H
To
±0.003%,
5-V output step
See Figure 5
8
0.5
2
60
40
10
8
0.5
2
60
40
10
µs
LSB
nV-s
nV/√Hz
nV-s
V
REF
L
+1.25
–2.5
500
–500
2.5
V
REF
H
– 1.25
V
REF
L
+1.25
–2.5
500
–500
2.5
V
REF
H
– 1.25
V
V
µA
µA
GND or V
CC
or V
SS
V
REF
= –2.5 V, R
L
= 10 kΩ,
V
SS
= –5 V
No oscillation
V
REF
L
– 1.25
500
–10, 30
Indefinite
V
REF
H
1.25
V
REF
L
1.25
500
–10, +30
Indefinite
V
REF
H
1.25
V
mA
pF
mA
TEST CONDITIONS
DAC7634E
MIN
TYP
MAX
MIN
DAC7634EB
TYP
MAX
UNIT
3
DAC7634
SBAS134A – JULY 2004 – REVISED AUGUST 2004
www.ti.com
SPECIFICATIONS
At T
A
= T
MIN
to T
MAX
, V
DD
= V
CC
= 5 V, V
SS
= 0 V, V
REF
H = 2.5 V, and V
REF
L = 0 V, unless otherwise noted
PARAMETER
ACCURACY
Linearity error
(1)
Linearity match
Differential linearity error
Monotonicity, T
MIN
to T
MAX
Zero-scale error
Zero-scale error drift
Full-scale error
Full-scale error drift
Zero-scale matching
Full-scale matching
Power supply rejection ratio (PSRR)
ANALOG INPUT
Voltage output
Output current
Maximum load capacitance
Short-circuit current
Short-circuit duration
REFERENCE INPUT
Ref high input voltage range
Ref low input voltage range
Ref high input current
Ref low input current
DYNAMIC PERFORMANCE
Settling time
Channel-to-channel crosstalk
Digital feedthrough
Output noise voltage
DAC glitch
DIGITAL INPUT
V
IH
V
IL
I
IH
I
IL
DIGITAL OUTPUT
V
OH
V
OL
POWER SUPPLY
V
DD
V
CC
V
SS
I
CC
I
DD
Power
4.75
4.75
0
5.0
5.0
0
1.5
50
7.5
10
5.25
5.25
0
2
4.75
4.75
0
5.0
5.0
0
1.5
50
7.5
10
5.25
5.25
0
2
V
V
V
mA
µA
mW
I
OH
= –0.8 mA
I
OL
= 1.6 mA
3.6
4.5
0.3
0.4
3.6
4.5
0.3
0.4
V
V
0.7
×
V
DD
0.3
×
V
DD
±10
±10
0.7
×
V
DD
0.3
×
V
DD
±10
±10
V
V
µA
µA
f = 10 kHz
7FFF
H
to 8000
H
or
8000
H
to 7FFF
H
To
±0.003%,
2.5-V output step
See Figure 6
8
0.5
2
60
40
10
8
0.5
2
60
40
10
µs
LSB
nV-s
nV/√Hz
nV-s
V
REF
L
+1.25
0
250
–250
2.5
V
REF
H
–1.25
V
REF
L
+1.25
0
250
–250
2.5
V
REF
H
–1.25
V
V
µA
µA
GND or V
CC
V
REF
L = 0 V, V
SS
= 0 V,
R
L
= 10 kΩ
No oscillation
0
– 1.25
500
±
30
Indefinite
V
REF
H
1.25
0
–1.25
500
±
30
Indefinite
V
REF
H
1.25
V
mA
pF
mA
Channel-to-channel matching
Channel-to-channel matching
At full scale
14
±1
5
±1
5
±1
±1
10
±2
10
±2
10
±2
±2
100
±3
±4
±2
±3
15
±1
5
±1
5
±1
±1
10
±2
10
±2
10
±2
±2
100
±4
±2
±2
±1
±2
±3
LSB
LSB
LSB
Bits
mV
ppm/°C
mV
ppm/°C
mV
mV
ppm/V
TEST CONDITIONS
DAC7634E
MIN
TYP
MAX
MIN
DAC7634EB
TYP
MAX
UNIT
(1)
If V
SS
= 0 V specification applies at Code 0040
H
and above due to possible negative zero-scale error.
4
DAC7634
www.ti.com
SBAS134A – JULY 2004 – REVISED AUGUST 2004
PIN DESCRIPTIONS
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
NAME
NC
NC
SDI
DGND
CLK
DGND
LDAC
DGND
LOAD
DGND
CS
DGND
SDO
DGND
DESCRIPTION
No connection
No connection
Serial data input
Digital ground
Data clock input
Digital ground
DAC register load control, rising edge triggered
Digital ground
DAC input register load control, active low
Digital ground
Chip select, active low
Digital ground
Serial data output
Digital ground
Reset Select. Determines the action of RST. If
HIGH, a RST common sets the DAC registers to
mid-scale (8000
H
). If LOW, a RST command sets
the DAC registers to zero (0000
H
).
Digital ground
Reset, rising edge triggered. Depending on the
state of RSTSEL, the DAC registers are set to
either mid-scale or zero.
Digital ground
No connection
No connection
Digital ground
Digital ground
Digital 5-V power supply
Digital 5-V power supply
PIN
25
26
27
28
29
30
31
32
33
34
35
36
37
38
NAME
V
CC
V
CC
AGND
AGND
V
SS
V
SS
V
OUT
D
V
OUT
D Sense
V
REF
L CD Sense
V
REF
L CD
V
REF
H CD
V
REF
H CD Sense
V
OUT
C
V
OUT
C Sense
DESCRIPTION
Analog +5-V power supply
Analog +5-V power supply
Analog ground
Analog ground
Analog +5-V power supply or 0-V single supply
Analog +5-V power supply or 0-V single supply
DAC D output voltage
DAC D's output amplifier inverting input. Used to close
feedback loop at load.
DAC C and D reference low sense input
DAC C and D reference low input
DAC C and D reference high input
DAC C and D reference high sense input
DAC C output voltage
DAC C's output amplifier inverting input. Used to close
the feedback loop at the load.
15
RSTSEL
39
V
OUT
B
DAC B output voltage
16
DGND
40
V
OUT
B Sense
V
REF
H AB Sense
V
REF
H AB
V
REF
L AB
V
REF
L AB Sense
V
SS
AGND
V
OUT
A
V
OUT
A Sense
DAC B's output amplifier inverting input. Used to close
the feedback loop at the load.
DAC A and B reference high sense input
DAC A and B reference high input
DAC A and B reference low input
DAC A and B reference low sense input
Analog –5-V power supply or 0-V single supply
Analog ground
DAC A output voltage
DAC A's output amplifier inverting input. Used to close
the feedback loop at the load.
17
18
19
20
21
22
23
24
RST
DGND
NC
NC
DGND
DGND
V
DD
V
DD
41
42
43
44
45
46
47
48
5
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