DAC811RH Burr-Brown Corporation, DAC811RH Datasheet

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DAC811RH

Manufacturer Part Number
DAC811RH
Description
Microprocessor-Compatible 12-BIT DIGITAL-TO-ANALOG CONVERTER
Manufacturer
Burr-Brown Corporation
Datasheet

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FEATURES
DESCRIPTION
The DAC811 is a complete, single-chip integrated-
circuit, microprocessor-compatible, 12-bit digital-to-
analog converter. The chip combines a precision volt-
age reference, microcomputer interface logic, and
double-buffered latch, in a 12-bit D/A converter with
a voltage output amplifier. Fast current switches and a
laser-trimmed thin-film resistor network provide a
highly accurate and fast D/A converter.
Microcomputer interfacing is facilitated by a double-
buffered latch. The input latch is divided into three
4-bit nibbles to permit interfacing to 4-, 8-, 12-, or
16-bit buses and to handle right-or left-justified data.
The 12-bit data in the input latches is transferred to the
D/A latch to hold the output value.
© 1983 Burr-Brown Corporation
information, visit www.burr-brown.com
SINGLE INTEGRATED CIRCUIT CHIP
MICROCOMPUTER INTERFACE:
DOUBLE-BUFFERED LATCH
VOLTAGE OUTPUT: 10V, 5V, +10V
MONOTONICITY GUARANTEED OVER
TEMPERATURE
TEMPERATURE
GUARANTEED SPECIFICATIONS AT 12V
AND 15V SUPPLIES
TTL/5V CMOS-COMPATIBLE LOGIC
INPUTS
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
1/2LSB MAXIMUM NONLINEARITY OVER
12-BIT DIGITAL-TO-ANALOG CONVERTER
Twx: 910-952-1111 • Internet: http://www.burr-brown.com/ • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
Microprocessor-Compatible
®
PDS-503K
1
Input gating logic is designed so that loading the last
nibble or byte of data can be accomplished simulta-
neously with the transfer of data (previously stored in
adjacent latches) from adjacent input latches to the
D/A latch. This feature avoids spurious analog output
values while using an interface technique that saves
computer instructions.
The DAC811 is laser trimmed at the wafer level and
is specified to 1/4LSB maximum linearity error (B,
K, and S grades) at 25 C and 1/2LSB maximum over
the temperature range. All grades are guaranteed mono-
tonic over the specification temperature range.
The DAC811 is available in six performance grades
and three package types. DAC811J and K are speci-
fied over the temperature ranges of 0 C to +70 C;
DAC811A and B are specified over –25 C to +85 C;
DAC811R and S are specified over –55 C to +125 C.
DAC811J and K are packaged in a reliable 28-pin
plastic DIP or plastic SOIC package, while DAC811A,
B, R and S are available in a 28-pin 0.6" wide dual-
inline hermetically sealed ceramic side-brazed pack-
age (H package).
Input Latch
Voltage Reference
4 MSBs
12-Bit D/A Converter
Input Latch
D/A Latch
R
BPO
Input Latch
4 LSBs
BPO
Printed in U.S.A. January, 2000
DAC811
DAC811
R
F
V
10V
R
OUT
S
F
J
®

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DAC811RH Summary of contents

Page 1

... 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 • Internet: http://www.burr-brown.com/ • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132 © 1983 Burr-Brown Corporation Input gating logic is designed so that loading the last ...

Page 2

... DAC811RH DAC811SH MIN TYP MAX MIN TYP MAX UNITS Bits VDC VDC +10 ns 1/4 1/2 1/8 1/4 LSB 1/2 3/4 1/4 1/2 LSB % % of FSR % of FSR/% FSR/%V ...

Page 3

PIN DESCRIPTIONS PIN NAME FUNCTION 1 +V Logic supply, +5V Write, command signal to load latches. Logic low loads latches. 3 LDAC Load D/A converter, enables WR to load the D/A latch. Logic low enables ...

Page 4

TIMING DIAGRAMS Write Cycle #1 Load first rank from Data Bus: LDAC = – DISCUSSION OF SPECIFICATIONS INPUT CODES The DAC811 ...

Page 5

Frequency (Hz) FIGURE 1. Power Supply Rejection vs Power Supply Ripple Frequency. OPERATION DAC811 is a complete single IC chip 12-bit D/A converter. The chip contains a 12-bit D/A converter, voltage ...

Page 6

Full Scale 1LSB Rotates the Line All Bits Range of Logic 0 Offset Adj. Digital Input Offset Adjust Translates the Line FIGURE 3. Relationship of Offset and Gain Adjustments for a Unipolar D/A Converter. + Full Scale 1LSB Full ...

Page 7

DAC811 features separate digital and analog power supply returns to permit optimum connections for low noise and high speed performance. The analog common (pin 23) and digital common (pin 15) should be connected together at one point. Separate returns minimize ...

Page 8

INTERFACE The control logic of DAC811 permits interfacing to right- justified data formats, as illustrated in Figure 9. When a 12-bit D/A converter is loaded from an 8-bit bus, two bytes of data are required. Figures 10 and 11 ...

Page 9

INTERFACING MULTIPLE DAC811s IN 8-BIT SYSTEMS Many applications, such as automatic test systems, require that the outputs of several D/A converters be updated simul- taneously. The interface shown in Figure 12 uses a 74LS138 decoder to decode a set of ...

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