DAC8043A Analog Devices, DAC8043A Datasheet

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DAC8043A

Manufacturer Part Number
DAC8043A
Description
12-Bit Current-Out DAC in TSSOP-8 Package
Manufacturer
Analog Devices
Datasheet

Specifications of DAC8043A

Resolution (bits)
12bit
Dac Update Rate
4MSPS
Dac Settling Time
250ns
Max Pos Supply (v)
+5.5V
Single-supply
Yes
Dac Type
Current Out
Dac Input Format
Ser

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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.
GENERAL DESCRIPTION
The DAC8043A is an improved high accuracy 12-bit multiply-
ing 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 elimina-
tion 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 regis-
ter, 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 a PDIP package, and the low profile 1.75 mm height SOIC-8
surface mount packages. The DAC8043AFRU is available for
ultra-compact applications in a thin 1.1 mm TSSOP-8 package.
REV. B
FEATURES
Compact SOIC, 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
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/461-3113
–0.1
–0.2
–0.3
–0.4
–0.5
Figure 1. Integral Nonlinearity Error vs. Code
0.5
0.4
0.3
0.2
0.1
0
0
Multiplying D/A Converter
FUNCTIONAL BLOCK DIAGRAM
T
V
V
A
DD
REF
512
= +25 C, +85 C, –40 C
V
CLK
V
= +5V
REF
SRI
= –10V
LD
DD
1024
World Wide Web Site: http://www.analog.com
12-BIT SHIFT
REGISTER
DAC8043A
DAC REG
1536
12-Bit Serial Input
DAC
12
12
CODE
2048
2560
© Analog Devices, Inc., 2006
DAC8043A
R
I
GND
OUT
3072
FB
3584
4096

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DAC8043A Summary of contents

Page 1

... 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 a PDIP package, and the low profile 1 ...

Page 2

... DAC8043A–SPECIFICATIONS ELECTRICAL CHARACTERISTICS Parameter Symbol STATIC PERFORMANCE Resolution N Relative Accuracy INL Differential Nonlinearity DNL 1 Gain Error G FSE 2 Gain Tempco TCG Output Leakage Current I LKG 3 Zero-Scale Error I ZSE REFERENCE INPUT Input Resistance R REF 2 Input Capacitance C REF ANALOG OUTPUT 2 Output Capacitance C OUT ...

Page 3

... 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 ...

Page 4

... DAC8043A D11 SRI CLK t LD1 LD SRI CLK OUT ZS LD CLK Serial Shift Register Function u H Shift-Register-Data Advanced One Bit Latched Effect Effect NOTES u positive logic transition. The DAC Register LD input is level-sensitive. Any time LD is logic-low data in the serial register will directly control the switches in the R-2R DAC ladder ...

Page 5

... Figure 10. Linearity Error vs. External Op Amp V –5– DAC8043A 10k 100k 1M FREQUENCY – 10V REF SUPERIMPOSED –40 C, + 512 1024 1536 ...

Page 6

... DAC8043A 10V REF f = 2.5MHz V CLK OUT CODE: 7FF (10mV/DIV) LD (5V/DIV) 20mV TIME – 200ns/DIV Figure 11. Midscale Transition Performance REF CLK T (5V/DIV OUT (5V/DIV) 5V TIME – 1 s/DIV Figure 12. Large Signal Settling Time ALL BITS ON (MSB ...

Page 7

... V switches. DYNAMIC PERFORMANCE OUTPUT IMPEDANCE The DAC8043A’s output resistance the case of the output capacitance, varies with the digital input code. This resistance, looking back into the I feedback resistor alone when all digital inputs are LOW) and 7.5 kΩ (the feedback resistor in parallel with approximate 30 kΩ ...

Page 8

... REF Precision resistors will be necessary to avoid ratio errors. Other- wise trimming will be required to achieve full accuracy specifica- tions available from the DAC8043A device. See the various OP77 V OUT Analog Devices Digital Potentiometer products for automated trimming solutions (e ...

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