The DAC7641 is a 16-bit, voltage output digital-to-
analog converter (DAC) with guaranteed 15-bit mono-
tonic performance over the specified temperature range.
It accepts 16-bit parallel input data, has double-buffered
DAC input logic (allowing asynchronous update), and
provides a readback mode of the internal input registers.
Programmable asynchronous reset clears all registers to
a mid-scale code of 8000
H
or to a zero-scale of 0000
H
.
The DAC7641 can operate from a single +5V supply or
from +5V and –5V supplies.
Low power and small size per DAC make the DAC7641
ideal for automatic test equipment, DAC-per-pin
programmers, data acquisition systems, and closed-
loop servo-control. The DAC7641 is available in a
TQFP-32 package, and offers guaranteed specifica-
tions 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
V
DD
V
SS
V
CC
V
REF
L
Sense
V
REF
L
V
REF
H
V
REF
H
Sense
16
DATA I/O
I/O
Buffer
Input
Register
DAC
Register
DAC
V
OUT
V
OUT
Sense
CS
R/W
Control
Logic
DAC7641
AGND
DGND
RST
RSTSEL
LDAC
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
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.
®
DAC7641
2
SPECIFICATIONS
(Single Supply)
At T
A
= T
MIN
to T
MAX
, V
DD
= V
CC
= +5V, V
SS
= 0V, V
REF
H = +2.5V, and V
REF
L = 0V, unless otherwise noted.
DAC7641Y
PARAMETER
ACCURACY
Linearity Error
(1)
Differential Linearity Error
Monotonicity, T
MIN
to T
MAX
Zero Scale Error
Zero Scale Error Drift
Full-Scale Error
Full-Scale Error Drift
Power Supply Rejection Ratio (PSRR)
ANALOG OUTPUT
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
Digital Feedthrough
Output Noise Voltage, f = 10kHz
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
TEMPERATURE RANGE
Specified Performance
T
Specifications same as DAC7641Y.
NOTE: (1) If V
SS
= 0V specification applies at Code 0040
H
and above due to possible negative zero-scale error.
I
OH
= –0.8mA
I
OL
= 1.2mA
To
±0.003%,
2.5V Output Step
CONDITIONS
MIN
TYP
±3
±2
14
±1
5
±1
5
10
0
–1.25
500
±30
Indefinite
V
REF
L + 1.25
0
250
–250
8
2
60
40
0.7 • V
DD
0.3 • V
DD
±10
±10
3.6
4.5
0.3
+5.0
+5.0
0
0.4
15
1.8
T
0.4
+5.25
+5.25
0
0.5
2.5
+85
T
T
T
T
T
T
T
T
T
T
T
T
10
+2.5
V
REF
H – 1.25
T
T
T
T
T
T
T
T
T
T
T
T
T
±3
10
±3
10
100
V
REF
H
+1.25
T
T
T
T
T
T
T
MAX
±4
±3
15
T
T
T
T
T
T
T
T
T
T
T
T
MIN
DAC7641YB
TYP
±2
±1
MAX
±3
±2
UNITS
At Full Scale
V
REF
L = 0V, V
SS
= 0V, R
L
= 10kΩ
No Oscillation
GND or V
CC
LSB
LSB
Bits
mV
ppm/°C
mV
ppm/°C
ppm/V
V
mA
pF
mA
V
V
µA
µA
µs
nV-s
nV/√Hz
nV-s
V
V
µA
µA
V
V
V
V
V
mA
µA
mW
°C
7FFF
H
to 8000
H
or 8000
H
to 7FFF
H
T
T
T
T
T
T
T
+4.75
+4.75
0
–40
®
3
DAC7641
ABSOLUTE MAXIMUM RATINGS
(1)
V
SS
to V
SS
............................................................................. –0.3V to 11V
V
DD
to GND .......................................................................... –0.3V to 5.5V
V
REFL
to GND ............................................................ –0.3V to (V
SS
– V
CC
)
V
REFH
to GND ........................................................... –0.3V to (V
SS
– V
CC
)
V
REFH
to V
REFL
.................................................................... –0.3V to +11V
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
MINIMUM
RELATIVE
ACCURACY
(LSB)
±4
"
±3
"
DIFFERENTIAL
NONLINEARITY
(LSB)
±3
"
±2
"
PACKAGE
DRAWING
NUMBER
351
"
351
"
SPECIFICATION
TEMPERATURE
RANGE
–40°C to +85°C
"
–40°C to +85°C
"
PRODUCT
DAC7641Y
"
DAC7641YB
"
PACKAGE
TQFP-32
"
TQFP-32
"
ORDERING
NUMBER
(1)
DAC7641Y/250
DAC7641Y/2K
DAC7641YB/250
DAC7641YB/2K
TRANSPORT
MEDIA
Tape
Tape
Tape
Tape
and
and
and
and
Reel
Reel
Reel
Reel
NOTES: (1) Models with a slash (/) are available only in Tape and Reel in the quantities indicated (e.g., /2K indicates 2000 devices per reel). Ordering 2000 pieces
of “DAC7641Y/2K” will get a single 2000-piece Tape and Reel.
Kit DVD for EKI-LM4F232 with IAR Tools: http://www.ti.com.cn/tool/cn/eki-lm4f232-dvd[[i] This post was last edited by Lan Yuye on 2011-10-11 22:58[/i]]...
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NXP MCU
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