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PDF DAC2814 Data sheet ( Hoja de datos )
| Número de pieza | DAC2814 | |
| Descripción | DUAL 12-BIT DIGITAL-TO-ANALOG CONVERTER Serial Interface | |
| Fabricantes | Burr-Brown Corporation | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de DAC2814 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
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® DAC2814
DUAL 12-BIT DIGITAL-TO-ANALOG
CONVERTER (Serial Interface)
FEATURES
q COMPLETE DUAL DAC —
INCLUDES INTERNAL REFERENCES AND
OUTPUT AMPLIFIERS
q GUARANTEED SPECIFICATIONS OVER
TEMPERATURE
q GUARANTEED MONOTONIC OVER
TEMPERATURE
q HIGH-SPEED SERIAL INTERFACE
(10MHz CLOCK)
q LOW POWER: 300mW (150mW/DAC)
q LOW GAIN DRIFT: 5ppm/°C
q LOW NONLINEARITY: ±1/2 LSB max
q UNIPOLAR OR BIPOLAR OUTPUT
q CLEAR/RESET TO UNIPOLAR OR
BIPOLAR ZERO
DESCRIPTION
The DAC2814 is one in a family of dual and quad 12-
bit digital-to-analog converters. Serial, 8-bit, 12-bit
interfaces are available.
The DAC2814 is complete. It contains CMOS logic,
switches, a high-performance buried-zener reference,
and low-noise bipolar output amplifiers. No external
components are required for either unipolar 0 to 10V,
0 to –10V, or bipolar ±10V output ranges.
The DAC2814 has a high-speed serial interface
capable of being clocked at 10MHz. Serial data are
clocked DAC B MSB first into a 24-bit shift register,
then strobed into each DAC separately or simulta-
neously as required. The DAC has an asynchronous
clear control for reset to unipolar or bipolar zero
depending on the mode selected. This feature is useful
for power-on reset or system calibration. The DAC2814
is packaged in a 24-pin plastic DIP rated for the –40°C
to +85°C extended industrial temperature range.
High-stability laser-trimmed thin film resistors assure
high reliability and true 12-bit integral and differential
linearity over the full specified temperature range.
+VL 6
+VS 10
–VS 7
AGND 8
DGND 1
Serial
Data and
Control In
Logic
Serial
Data 5
Out
DAC2814
10V
Ref
10kΩ
10kΩ
A3
DAC A
DAC B
20kΩ
20kΩ
A1
20kΩ
20kΩ
A2
16 +VREF Out
15 Inv In
12 Inv Out
11 VREF In
19 BPO A
14 VOUT A
18 BPO B
17 VOUT B
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 • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
© 1991 Burr-Brown Corporation
PDS-1103B
Printed in U.S.A. October, 1993
1 page  
TYPICAL PERFORMANCE CURVES (CONT)
TA = +25°C, VS = ±12V or ±15V, VL = +5V unless otherwise noted.
CHANGE OF GAIN, BIPOLAR OFFSET AND ZERO ERROR
vs TEMPERATURE
+1.5
+0.015
+1.0
+0.5 Bipolar Zero
0
Gain Error
+0.01
+0.005
0
–0.5
Bipolar Offset
–0.005
–1.0
–0.01
–1.5
–40
–20
0 20 40 60
Temperature (°C)
80
–0.015
POWER SUPPLY CURRENT vs TEMPERATURE
11.8
+IL (All Logic Inputs = 2V)
11.6
11.4
11.2
11
IS
10.8
+IL (All Logic Inputs = 0V or VL)
10.6
10.4
–40
–20
0 20 40 60
Temperature (°C)
80
1.4
1.2
1
0.8
0.6
0.4
0.2
0
OUTPUT VOLTAGE SWING vs RESISTOR LOAD
25
20
VS = ±15V
VL = 5V
15
10V REF
10
5
0
10 100 1k 10k
Load Resistance (Ω)
FULL-SCALE OUTPUT SWING
BIPOLAR (20V Step)
0V
+5V
0V
Time (2µs/div)
V
OUT
LATCH
CROSSTALK (Bipolar Mode)
0V VOUT B
+5V
0V
VOUT A
LATCH A
Time (500ns/div)
NOTE: Crosstalk is dominated by digital crosstalk/
feedthrough of the LATCH signal.
FULL-SCALE OUTPUT SWING
UNIPOLAR (10V Step)
0V V
OUT
Time (2µs/div)
®
5 DAC2814
5 Page 
+5V
+
1µF
6
+15V
+
1µF
10
–15V
1µF +
7
Serial
Data and
Control In
DAC2814
10V
Ref
16
DAC A
DAC B
20kΩ
20kΩ
A1
20kΩ
20kΩ
A2
11
19
14 VOUT A
18
17 VOUT B
MODE 4
1
DGND
FIGURE 5. Analog Connections for 0 to –10V DAC Output.
8
AGND
Data
LATCH
CLK
Multiple DAC2814s Cascaded
23
Data In
24
CS
22
LATCH A
2
LATCH B
21
CLK
5
Data Out
Data
LATCH 1
CLK
Multiple DAC2814s Paralleled
23
Data In
24
CS
22
LATCH A
2
LATCH B
21
CLK
5
Data Out
23
Data In
24
CS
22
LATCH A
2
LATCH B
21
CLK
5
Data Out
LATCH 2
23
Data In
24
CS
22
LATCH A
2
LATCH B
21
CLK
5
Data Out
23
Data In
24
CS
22
LATCH A
2
LATCH B
21
CLK
5
Data Out
To Other DACs
FIGURE 6. Cascaded Serial Bus Connection for Multiple
DAC packages.
LATCH 3
23
Data In
24
CS
22
LATCH A
2
LATCH B
21 CLK
Data Out 5
FIGURE 7. Parallel Bus Connection for Multiple DAC
packages.
®
11 DAC2814
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet DAC2814.PDF ] | |
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