12-Bit Serial Input
CODE
INL – LSB
0.1
0
–0.1
0 1024 2048 3072 4096
–0.5
0.5
0.4
0.3
0.2
–0.2
–0.3
–0.4
512 1536 2560 3584
TA = +25ⴗC, +85ⴗC, –40ⴗC
V
DD
= +5V
V
REF
= –10V
a
FEATURES
Compact SO-8 and TSSOP Packages
True 12-Bit Accuracy
5 V Operation @ <10 A
Fast 3-Wire Serial Input
Fast 1 s Settling Time
2.4 MHz 4-Quadrant Multiply BW
Pin-for-Pin Upgrade for DAC8043
Standard and Rotated Pinout
APPLICATIONS
Ideal for PLC Applications in Industrial Control
Programmable Amplifiers and Attenuators
Digitally Controlled Calibration and Filters
Motion Control Systems
GENERAL DESCRIPTION
The DAC8043A is an improved high accuracy 12-bit multiplying digital-to-analog converter in space-saving 8-lead packages.
Featuring serial input, double buffering and excellent analog
performance, the DAC8043A is ideal for applications where PC
board space is at a premium. Improved linearity and gain error
performance permit reduced parts count through the elimination of trimming components. Separate input clock and load
DAC control lines allow full user control of data loading and
analog output.
The circuit consists of a 12-bit serial-in/parallel-out shift register, a 12-bit DAC register, a 12-bit CMOS DAC and control
logic. Serial data is clocked into the input register on the rising
edge of the CLOCK pulse. When the new data word has been
clocked in, it is loaded into the DAC register with the LD input
pin. Data in the DAC register is converted to an output current
by the D/A converter.
Consuming only 10 µA from a single 5 V power supply, the
DAC8043A is the ideal low power, small size, high performance
solution to many application problems.
The DAC8043A is specified over the extended industrial
(–40°C to +85°C) temperature range. DAC8043A is available
in plastic DIP, and the low profile 1.75 mm height SO-8 surface
mount packages. The DAC8043AFRU is available for ultracompact applications in a thin 1.1 mm TSSOP-8 package.
Multiplying D/A Converter
DAC8043A
FUNCTIONAL BLOCK DIAGRAM
V
DD
V
REF
LD
CLK
SRI
Figure 1. Integral Nonlinearity Error vs. Code
DAC8043A
DAC
12
DAC REG
12
12-BIT SHIFT
REGISTER
R
FB
I
OUT
GND
REV. A
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 World Wide Web Site: http://www.analog.com
Fax: 781/326-8703 © Analog Devices, Inc., 2000
DAC8043A–SPECIFICATIONS
(@ V
ELECTRICAL CHARACTERISTICS
= 5 V, V
DD
Parameter Symbol Condition E Grade F Grade Unit
STATIC PERFORMANCE
Resolution N 12 12 Bits
Relative Accuracy INL ±0.5 ±1.0 LSB max
Differential Nonlinearity DNL All Grades Monotonic to 12 Bits ±0.5 ±1.0 LSB max
Gain Error
Gain Tempco
Output Leakage Current I
Zero-Scale Error
1
2
3
G
FSE
TCG
LKG
I
ZSE
TA = 25°C, Data = FFF
= –40°C, +85°C, Data = FFF
T
A
I
FS
Pin Measured ±5 ±5 ppm/°C max
OUT
Data = 000H, I
= –40°C, +85°C, Data = 000H, I
T
A
Data = 000
H
TA = –40°C, +85°C, Data = 000
REFERENCE INPUT
Input Resistance R
Input Capacitance
ANALOG OUTPUT
Output Capacitance
2
2
C
C
REF
REF
OUT
Absolute Tempco < 50 ppm/°C 7/15 7/15 kΩ min/max
Data = 000
Data = FFF
H
H
DIGITAL INPUTS
Digital Input Low V
Digital Input High V
Input Leakage Current I
Input Capacitance
INTERFACE TIMING
2
2, 4
Data Setup t
Data Hold t
Clock Width High t
Clock Width Low t
Load Pulsewidth t
LSB CLK to LD DAC t
AC CHARACTERISTICS
1, 2
Output Current Settling Time t
DAC Glitch Q Data = 000
Feedthrough (V
OUT/VREF
Total Harmonic Distortion THD V
Output Noise Density
)FT V
5
Multiplying Bandwidth BW –3 dB, V
C
e
IL
IH
IL
IL
DS
DH
CH
CL
LD
ASB
S
n
V
= 0 V to 5 V 0.001/±1 0.001/±1 µA typ/max
LOGIC
V
= 0 V 10 10 pF max
LOGIC
To ±0.01% of Full Scale, Ext Op Amp OP42 1 1 µs max
H
= 20 V p-p, Data = 000H, f = 10 kHz 1 1 mV p-p
REF
= 6 V rms, Data = FFFH, f = 1 kHz –85 –85 dB typ
REF
10 Hz to 100 kHz Between RFB and I
OUT/VREF
SUPPLY CHARACTERISTICS
Power Supply Range V
Positive Supply Current I
Power Dissipation P
DD RANGE
DD
DISS
V
LOGIC
V
LOGIC
= 0 V or V
= 0 V or V
Power Supply Sensitivity PSS ∆VDD = ±5% 0.002 0.002 %/% max
NOTES
1
Using internal feedback resistor RFB, see Figure 19 test circuit with V
2
These parameters are guaranteed by design and not subject to production testing.
3
Calculated from worst case R
4
All input control signals are specified with tR = tF = 2 ns (10% to 90% of 5 V) and timed from a voltage level of 1.6 V.
5
Calculation from en = √4KTRB where: K = Boltzmann Constant (J/°K), R = Resistance ( Ω), T = Resistor Temperature (°K), B = 1 Hz Bandwidth.
Specifications subject to change without notice.
REF
: I
ZSE
(LSB) = (R
REF
× I
× 4096)/V
LKG
REF
REF
= 10 V, –40ⴗC < TA < +85ⴗC, unless otherwise noted.)
REF
H
H
Pin Measured ±5 ±5 nA max
OUT
Pin Measured ±25 ±25 nA max
OUT
±1.0 ±2.0 LSB max
±2.0 ±2.0 LSB max
0.03 0.03 LSB max
H
0.15 0.15 LSB max
5 5 pF typ
25 25 pF typ
30 30 pF typ
0.8 0.8 V max
2.4 2.4 V min
10 10 ns min
5 5 ns min
25 25 ns min
25 25 ns min
25 25 ns min
0 0 ns min
to FFFH to 000H, V
, V
= 100 mV rms, Data = FFFH2.4 2.4 MHz typ
REF
= 0 V 20 20 nVs max
REF
OUT
17 17 nV/√Hz max
4.5/5.5 4.5/5.5 V min/max
DD
DD
= 10 V.
.
10 10 µA max
50 50 µW max
–2–
REV. A
DAC8043A
1
4
5
8
SO-8
DAC8043A
ES/FS
1
4
5
8
TSSOP-8
DAC8043A
FRU
TOP VIEW
(Not to Scale)
8
7
6
5
1
2
3
4
I
OUT
GND
LD
R
FB
V
REF
V
DD
CLK
SRI
PDIP-8
DAC8043A
EP/FP
TOP VIEW
(Not to Scale)
8
7
6
5
1
2
3
4
I
OUT
GND
LD
R
FB
V
REF
V
DD
CLKSRI
SO-8
DAC8043A1ES
DAC8043A1FS
WARNING!
ESD SENSITIVE DEVICE
ABSOLUTE MAXIMUM RATINGS*
VDD to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V, +8 V
V
to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 18 V
REF
to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±18 V
R
FB
Logic Inputs to GND . . . . . . . . . . . . . . –0.3 V, V
VI
to GND . . . . . . . . . . . . . . . . . . . –0.3 V, VDD + 0.3 V
OUT
Short Circuit to GND . . . . . . . . . . . . . . . . . . . . . 50 mA
I
OUT
Package Power Dissipation . . . . . . . . . . . . . (T
Thermal Resistance θ
JA
+ 0.3 V
DD
max – TA)/θ
J
JA
8-Lead Plastic DIP Package (N-8) . . . . . . . . . . . . 103°C/W
8-Lead SOIC Package (SO-8) . . . . . . . . . . . . . . . 158°C/W
TSSOP-8 Package (RU-8) . . . . . . . . . . . . . . . . . . 240°C/W
Maximum Junction Temperature (T
max) . . . . . . . . . 150°C
J
Operating Temperature Range . . . . . . . . . . – 40°C to +85°C
Storage Temperature Range . . . . . . . . . . . . –65°C to +150°C
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . 300°C
*Stresses above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. This is a stress rating only; functional operation of the
device at these or any other conditions above those indicated in the operational
sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
ORDERING GUIDE
INL Package Package
Model (LSB) Temp Description Option
DAC8043AEP ±0.5 –40/+85°C 8-Lead P-DIP N-8
DAC8043AES ± 0.5 –40/+85°C 8-Lead SOIC SO-8
DAC8043A1ES ±0.5 –40/+85°C 8-Lead SOIC SO-8
DAC8043AFP ±1.0 –40/+85°C 8-Lead P-DIP N-8
DAC8043AFS ± 1.0 –40/+85°C 8-Lead SOIC SO-8
DAC8043A1FS ±1.0 –40/+85°C 8-Lead SOIC* SO-8
DAC8043AFRU ± 1.0 –40/+85°C TSSOP-8 RU-8
NOTES
The DAC8043A contains 346 transistors. The die size measures 70.3 mil ×
57.1 mil, 4014 sq mil.
*
The DAC8043A1ES and DAC8043A1FS have a rotated pinout.
TSSOP-8 Package Branding:
Line 1: yww (data code: year, work week).
Line 2: 8043A.
PIN FUNCTION DESCRIPTIONS
#(*) Name Function
1(7) V
DAC Reference Input Pin. Establishes DAC full-
REF
scale voltage. Constant input resistance versus
code.
2 (8) R
Internal Matching Feedback Resistor. Connect
FB
to external op amp output.
3 (1) I
DAC Current Output, full-scale output 1 LSB
OUT
less than reference input voltage –V
REF
.
4 (2) GND Analog and Digital Ground.
5 (3) LD Load Strobe, Level-Sensitive Digital Input.
Transfers shift-register data to DAC register
while active low. See truth table for operation.
6 (4) SRI 12-Bit Serial Register Input, data loads directly
into the shift register MSB first. Extra leading
bits are ignored.
7 (5) CLK Clock Input, positive-edge clocks data into shift
register.
8 (6) V
Positive Power Supply Input. Specified range of
DD
operation 5 V ± 10%.
*Note Pin numbers in parenthesis represent the rotated pinout of the
DAC8043A1ES and DAC8043A1FS models.
DAC8043AE/F PIN CONFIGURATIONS
DAC8043A1E AND DAC8043A1F PIN CONFIGURATION
(Rotated Pinout)
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the DAC8043A features proprietary ESD protection circuitry, permanent damage may
occur on devices subjected to high-energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.
REV. A
–3–