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零件编号 | DAC4814 | ||
描述 | Quad 12-Bit Digital-to-Analog Converter Serial Interface | ||
制造商 | Burr-Brown Corporation | ||
LOGO | |||
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® DAC4814
Quad 12-Bit Digital-to-Analog Converter
(Serial Interface)
FEATURES
q COMPLETE QUAD 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: 600mW (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
+VL 28
+VS 15
–VS 7
AGND 12
DGND 17
DESCRIPTION
The DAC4814 is one in a family of dual and quad 12-
bit digital-to-analog converters. Serial, 8-bit, 12-bit
interfaces are available.
The DAC4814 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 DAC4814 has a high-speed serial interface
capable of being clocked at 10MHz. Serial data are
clocked DAC D MSB first into a 48-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 DAC4814
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.
Serial
Data and
Control In
Serial
Data 18
Out
Logic
DAC4814
10V
Ref
10kΩ
10kΩ
A5
DAC A
DAC B
DAC C
DAC D
20kΩ
20kΩ
A1
20kΩ
20kΩ
A2
20kΩ
20kΩ
A3
20kΩ
20kΩ
A4
4 +VREF Out
3 Inv In
11 Inv Out
10 VREF In
6 BPO A
2 VOUT A
5 BPO B
1 VOUT B
9 BPO C
14 VOUT C
8 BPO D
13 VOUT D
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-1111B
Printed in U.S.A. April, 1995
FUNCTIONAL BLOCK DIAGRAM, DAC4814 — Quad 12-bit DAC, Serial Port
Data In
22
VREF In
10
CLK 19
LATCH A 27
LATCH B 26
LATCH C 21
LATCH D 20
CS 23
Control
Logic
CLR 24
MODE 25
12-Bit
Shift
Register
Bits 0-11
12-Bit
Latch
Register
Bits 0-11
DAC A
Bit 11
12-Bit
Shift
Register
Bits 0-11
12-Bit
Latch
Register
Bits 0-11
DAC B
Bit 11
12-Bit
Shift
Register
Bits 0-11
12-Bit
Latch
Register
Bits 0-11
DAC C
Bit 11
12-Bit
Shift
Register
Bits 0-11
12-Bit
Latch
Register
Bits 0-11
DAC D
20kΩ
20kΩ
A1
6 BPO A
2 VOUT A
20kΩ
20kΩ
A2
5 BPO B
1 VOUT B
20kΩ
20kΩ
A3
9 BPO C
14 VOUT C
20kΩ
20kΩ
A4
8 BPO D
13 VOUT D
Bit 11
+10V
Voltage
Reference
10kΩ
10kΩ
A5 11 Inv Out
18 28 15 7 12 17
Data Out +VL +VS –VS AGND DGND
43
+VREF Out Inv In
®
DAC4814
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页数 | 12 页 | ||
下载 | [ DAC4814.PDF 数据手册 ] |
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