The DAC7611 is a 12-bit digital-to-analog converter
(DAC) with guaranteed 12-bit monotonicity perfor-
mance over the industrial temperature range. It re-
quires a single +5V supply and contains an input shift
register, latch, 2.435V reference, DAC, and high speed
rail-to-rail output amplifier. For a full-scale step, the
output will settle to 1 LSB within 7µs. The device
consumes 2.5mW (0.5mA at 5V).
The synchronous serial interface is compatible with a
wide variety of DSPs and microcontrollers. Clock
(CLK), serial data in (SDI), and load strobe (LD)
comprise the serial interface. In addition, two control
pins provide a chip select (CS) function and an asyn-
chronous clear (CLR) input. The CLR input can be
used to ensure that the DAC7611 output is 0V on
power-up or as required by the application.
The DAC7611 is available in an 8-lead SOIC or 8-pin
plastic DIP package and is fully specified over the
industrial temperature range of –40°C to +85°C.
APPLICATIONS
q
PROCESS CONTROL
q
DATA ACQUISITION SYSTEMS
q
CLOSED-LOOP SERVO-CONTROL
q
PC PERIPHERALS
q
PORTABLE INSTRUMENTATION
V
DD
DAC7611
Ref
12-Bit DAC
V
OUT
12
CLR
LD
DAC Register
CS
CLK
SDI
12
Serial Shift Register
GND
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
NOTES: (1) This term is sometimes referred to as Linearity Error or Integral Nonlinearity (INL). (2) Specification does not apply to negative-going transitions where
the final output voltage will be within 3 LSBs of ground. In this region, settling time may be double the value indicated.
To
±1
LSB of Final Value
CONDITIONS
MIN
12
–2
–1
–1
4.079
±5
TYP
MAX
MIN
T
–1
–1
T
4.087
T
3
DAC7611PB, UB
TYP
MAX
UNITS
Bits
LSB
LSB
LSB
V
mA
LSB
pF
mA
Guaranteed Monotonic
Code 000
H
Code FFF
H
Code 800
H
R
LOAD
≥
402Ω, Code 800
H
No Oscillation
GND or V
DD
±1/2
±1/2
+1
4.095
±7
1
500
±70
Indefinite
Serial
Straight Binary
TTL
+2
+1
+3
4.111
±1/4
±1/4
T
4.095
T
T
T
T
T
T
T
T
+1
+1
T
4.103
T
2.4
0.8
±10
±10
7
15
2
+4.75
V
IH
= 5V, V
IL
= 0V, No Load, at Code 000
H
V
IH
= 5V, V
IL
= 0V, No Load
∆V
DD
=
±5%
–40
+5.0
0.5
2.5
0.001
+5.25
1
5
0.004
+85
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
V
V
µA
µA
µs
nV-s
nV-s
V
mA
mW
%/%
°C
T
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.
®
DAC7611
2
PIN CONFIGURATION
Top View
DIP
PIN DESCRIPTION
PIN
1
LABEL
V
DD
CS
CLK
SDI
LD
DESCRIPTION
Power Supply
Chip Select (active LOW).
Synchronous Clock for the Serial Data Input.
Serial Data Input. Data is clocked into the internal
serial register on the rising edge of CLK.
Loads the Internal DAC Register. NOTE: The DAC
register is a transparent latch and is transparent
when LD is LOW (regardless of the state of CS or
CLK).
Asynchronous Input to Clear the DAC Register.
When CLR is strobbed LOW, the DAC register is set
to 000
H
and the output voltage to 0V.
Ground
Voltage Output. Fixed output voltage range of ap-
proximately 0V to 4.095V (1mV/LSB). The internal
reference maintains this output range over time,
temperature, and power supply variations (within
the values defined in the specifications section).
V
DD
CS
CLK
SDI
1
2
3
4
DAC7611
8
7
6
5
V
OUT
GND
CLR
LD
2
3
4
5
6
CLR
PIN CONFIGURATION
Top View
SOIC
7
8
GND
V
OUT
V
DD
CS
CLK
SDI
1
2
3
4
DAC7611
8
7
6
5
V
OUT
GND
CLR
LD
ELECTROSTATIC
DISCHARGE SENSITIVITY
ABSOLUTE MAXIMUM RATINGS
(1)
V
DD
to GND .......................................................................... –0.3V to 6V
Digital Inputs to GND ............................................. –0.3V to V
DD
+ 0.3V
V
OUT
to GND ........................................................... –0.3V to V
DD
+ 0.3V
Power Dissipation ........................................................................ 325mW
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.
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 degrada-
tion 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)
±2
±2
±1
±1
DIFFERENTIAL
NONLINEARITY
(LSB)
±1
±1
±1
±1
SPECIFICATION
TEMPERATURE
RANGE
–40°C to +85°C
–40°C to +85°C
PACKAGE
DRAWING
NUMBER
(1)
006
182
PRODUCT
DAC7611P
DAC7611U
PACKAGE
8-Pin DIP
8-Lead SOIC
ORDERING
NUMBER
(2)
DAC7611P
DAC7611U
DAC7611U/2K5
DAC7611PB
DAC7611UB
DAC7611UB/2K5
TRANSPORT
MEDIA
Rails
Rails
Tape and Reel
Rails
Rails
Tape and Reel
"
DAC7611PB
DAC7611UB
"
"
"
"
"
–40°C to +85°C
–40°C to +85°C
"
8-Pin DIP
8-Lead SOIC
"
006
182
"
"
"
"
NOTES: (1) For detailed drawing and dimension table, please see end of data sheet, or Appendix C of Burr-Brown IC Data Book. (2) Models with a slash (/) are
available only in Tape and Reel in the quantities indicated (e.g., /2K5 indicates 2500 devices per reel). Ordering 2500 pieces of “DAC7611/2K5” will get a single
2500-piece Tape and Reel. For detailed Tape and Reel mechanical information, refer to Appendix B of Burr-Brown IC Data Book.
®
3
DAC7611
EQUIVALENT INPUT LOGIC
ESD protection
diodes to V
DD
and GND
DAC
Switches
12
CLR
Force to 000
H
DAC
Register
LD
Latched
Transparent
12
SDI
Data
Serial Shift Register
CS
CLK
®
DAC7611
4
TIMING DIAGRAMS
(MSB)
SDI
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
(LSB)
D0
CLK
t
CSS
CS
t
LD1
LD
t
LD2
t
CSH
t
DS
SDI
t
CL
CLK
t
DH
t
CH
t
LDW
LD
t
CLRW
CLR
FS
V
OUT
ZS
t
S
±1
LSB
Error Band
t
S
LOGIC TRUTH TABLE
CS
(1)
H
L
L
L
↑
H
(2)
H
(2)
H
H
CLK
(1)
X
L
H
↑
L
X
X
X
X
CLR
H
H
H
H
H
H
H
L
↑
LD
H
H
H
H
H
↓
L
(3)
X
H
SERIAL SHIFT
REGISTER
No Change
No Change
No Change
Advanced One Bit
Advanced One Bit
No Change
No Change
No Change
No Change
DAC REGISTER
No Change
No Change
No Change
No Change
No Change
Changes to Value of
Serial Shift Register
Transparent
Loaded with 000
H
Latched with 000
H
TIMING SPECIFICATIONS
T
A
= –40°C to +85°C and V
DD
= +5V.
SYMBOL
t
CH
t
CL
t
LDW
t
DS
t
DH
t
CLRW
t
LD1
t
LD2
t
CSS
t
CSH
DESCRIPTION
Clock Width HIGH
Clock Width LOW
Load Pulse Width
Data Setup
Data Hold
Clear Pulse Width
Load Setup
Load Hold
Select
Deselect
MIN TYP MAX UNITS
30
30
20
15
15
30
15
10
30
20
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
↑
Positive Logic Transition;
↓
Negative Logic Transition; X = Don’t Care.
NOTES: (1) CS and CLK are interchangeable. (2) A HIGH value is suggested
in order to avoid to “false clock” from advancing the shift register and changing
the DAC voltage. (3) If data is clocked into the serial register while LD is LOW,
the DAC output voltage will change, reflecting the current value of the serial
shift register.
NOTE: All input control signals are specified with t
R
= t
F
= 5ns (10% to 90%
of +5V) and timed from a voltage level of 1.6V. These parameters are
guaranteed by design and are not subject to production testing.
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