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Número de pieza | DAC2815AP | |
Descripción | DUAL 12-BIT DIGITAL-TO-ANALOG CONVERTER 8-Bit Port Interface | |
Fabricantes | Burr-Brown Corporation | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de DAC2815AP (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
No Preview Available ! ® DAC2815
DUAL 12-BIT DIGITAL-TO-ANALOG
CONVERTER (8-Bit Port 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 8 + 4-BIT PARALLEL
INTERFACE
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 DAC2815 is one in a family of dual and quad 12-
bit digital-to-analog converters (DACs). Serial, 8-bit,
12-bit interfaces are available.
The DAC2815 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 DAC2815 has a 2-byte (8 + 4) double-buffered
interface. Data is first loaded (level transferred) into
the input registers in two steps for each DAC. Then
both DACs are updated simultaneously. 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 calibra-
tion. The DAC2815 is packaged in a 28-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 10
+VS 12
–VS 8
AGND 11
DGND 28
8-Bit
Port and
Control In
Logic
DAC2815
10V
Ref
10kΩ
10kΩ
A3
DAC A
DAC B
20kΩ
20kΩ
A1
20kΩ
20kΩ
A2
17 +VREF Out
18 Inv In
14 Inv Out
13 VREF In
20 BPO A
16 VOUT A
19 BPO B
15 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-1110B
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
10.6 +IL (All Logic Inputs = 0V or VL)
10.4
–40
–20
0
20 40
Temperature (°C)
60
80
3.5
3
2.5
2
1.5
1
0.5
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
VOUT
+5V LE
0V
Time (2µs/div)
CROSSTALK (Bipolar Mode)
0V V B
OUT
VOUT A
+5V LE
0V
Time (500ns/div)
NOTE: Crosstalk is dominated by digital crosstalk/
feedthrough of the LE signal.
FULL-SCALE OUTPUT SWING
UNIPOLAR (10V Step)
0V VOUT
Time (2µs/div)
®
5 DAC2 815
5 Page +5V
+
1µF
10
+15V
+
1µF
12
–15V
1µF +
8
8-Bit
Port and
Control In
DAC2815
10V
Ref
17
DAC A
DAC B
20kΩ
20kΩ
A1
20kΩ
20kΩ
A2
13
20
16 VOUT A
19
15 VOUT B
MODE 6
28
DGND
11
AGND
FIGURE 5. Analog Connections for 0 to –10V DAC Output.
Data
WRITE 1
LATCH
A0
A1
DAC2815
1-2, 22-27
Data In
CS
21
WR
9
LE
3
A0
4
A1
7
WRITE 2
DAC2815
1-2, 22-27
Data In
CS
21
WR
9
LE
3
A0
4
A1
7
FIGURE 6. Logic Connection for Multiple DAC2815
Packages.
®
11 DAC2 815
11 Page |
Páginas | Total 11 Páginas | |
PDF Descargar | [ Datasheet DAC2815AP.PDF ] |
Número de pieza | Descripción | Fabricantes |
DAC2815AP | DUAL 12-BIT DIGITAL-TO-ANALOG CONVERTER 8-Bit Port Interface | Burr-Brown Corporation |
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