AD7839AS Analog Devices Inc, AD7839AS Datasheet

IC DAC 13BIT OCTAL V-OUT 44-MQFP

AD7839AS

Manufacturer Part Number
AD7839AS
Description
IC DAC 13BIT OCTAL V-OUT 44-MQFP
Manufacturer
Analog Devices Inc
Datasheet

Specifications of AD7839AS

Rohs Status
RoHS non-compliant
Settling Time
30µs
Number Of Bits
13
Data Interface
Parallel
Number Of Converters
8
Voltage Supply Source
Analog and Digital, Dual ±
Power Dissipation (max)
303mW
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
44-MQFP, 44-PQFP
For Use With
EVAL-AD7839EBZ - BOARD EVAL FOR AD7839

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a
REV. 0
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.
FEATURES
Eight 13-Bit DACs in One Package
Voltage Outputs
Offset Adjust for Each DAC Pair
Reference Range of
Maximum Output Voltage Range of
Clear Function to User-Defined Voltage
44-Lead MQFP Package
APPLICATIONS
Automatic Test Equipment
Process Control
General Purpose Instrumentation
LDAC
DB12
DB0
WR
CS
A0
A1
A2
AD7839
GND
V
CC
13
13
13
13
13
13
13
13
5 V
V
INPUT
INPUT
INPUT
INPUT
INPUT
INPUT
INPUT
INPUT
SS
REG
REG
REG
REG
REG
REG
REG
REG
B
C
D
E
G
H
A
F
V
13
13
13
13
13
13
13
13
DD
DAC
REG
DAC
REG
DAC
REG
DAC
REG
DAC
REG
DAC
REG
DAC
REG
DAC
REG
D
G
H
A
B
C
E
F
10 V
13
13
13
13
13
13
13
13
V
REF
GH
V
FUNCTIONAL BLOCK DIAGRAM
REF
AB
(+)
DAC H
DAC A
(+)
V
REF
GH
(–)
V
REF
AB
DAC G
(–)
DAC B
DAC F
V
CDEF
GENERAL DESCRIPTION
The AD7839 contains eight 13-bit DACs on one monolithic
chip. It has output voltages with a full-scale range of 10 V
from reference voltages of 5 V.
The AD7839 accepts 13-bit parallel loaded data from the exter-
nal bus into one of the input registers under the control of the
WR, CS and DAC channel address pins, A0–A2.
The DAC outputs are updated on reception of new data into
the DAC registers. All the outputs may be updated simulta-
neously by taking the LDAC input low.
Each DAC output is buffered with a gain-of-two amplifier into
which an external DAC offset voltage can be inserted via the
DUTGNDx pins.
The AD7839 is available in a 44-lead MQFP package.
REF
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
(+)
DAC C
V
CDEF
REF
(–)
Octal 13-Bit, Parallel Input,
DAC D
DUTGND
CLR
DAC E
CD
World Wide Web Site: http://www.analog.com
DUTGND
Voltage-Output DAC
EF
DUTGND
DUTGND
AB
GH
R
R
R
R
R
R
R
R
© Analog Devices, Inc., 1999
R
R
R
R
R
R
R
R
AD7839
V
V
V
V
V
V
V
V
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
A
B
C
D
E
F
G
H

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AD7839AS Summary of contents

Page 1

FEATURES Eight 13-Bit DACs in One Package Voltage Outputs Offset Adjust for Each DAC Pair Reference Range Maximum Output Voltage Range of Clear Function to User-Defined Voltage 44-Lead MQFP Package APPLICATIONS Automatic Test Equipment Process Control ...

Page 2

AD7839–SPECIFICATIONS Parameter A Version ACCURACY Resolution 13 Relative Accuracy Differential Nonlinearity Zero-Scale Error Full-Scale Error Gain Error 2 Gain Temperature Coefficient 0 Crosstalk 120 2 REFERENCE INPUTS DC Input Impedance 100 Input Current V (+) Range 0/+5 ...

Page 3

AC PERFORMANCE CHARACTERISTICS Parameter DYNAMIC PERFORMANCE Output Voltage Settling Time Slew Rate Digital-to-Analog Glitch Impulse Channel-to-Channel Isolation DAC-to-DAC Crosstalk Digital Crosstalk Digital Feedthrough Output Noise Spectral Density @ 1 kHz Specifications subject to change without notice TIMING SPECIFICATIONS ...

Page 4

... Industrial (A Version – +85 C Storage Temperature Range . . . . . . . . . . . . – +150 C Junction Temperature (T max +150 C J MQFP Package Power Dissipation . . . . . . . . . . . . . . . . . . (T Thermal Impedance . . . . . . . . . . . . . . . . . . . . . 95 C/W JA Model AD7839AS *S = Plastic Quad Flatpack (MQFP). DUTGND_AB V V Lead Temperature, Soldering Vapor Phase (60 sec +215 C Infrared (15 sec +220 ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >4000 V ...

Page 5

Pin No. Mnemonic 1 DUTGND_AB 2, 44, 43 OUT OUT 41, 37, 35, 34 (+)AB, V (–)AB REF REF LDAC 7 10 ...

Page 6

AD7839 TERMINOLOGY Relative Accuracy Relative accuracy or endpoint linearity is a measure of the max- imum deviation from a straight line passing through the end- points of the DAC transfer function measured after adjust- ing for zero error ...

Page 7

V = +15V –15V 0. +5V REF(+) V = –5V 0.50 REF(– + 0.25 0.0 –0.25 –0.50 –0.75 –1.0 0 2048 4096 6144 8191 CODE Figure 2. Typical INL ...

Page 8

AD7839 Unipolar Configuration Figure 11 shows the AD7839 in the unipolar binary circuit configuration. The V (+) input of the DAC is driven by the REF AD586 reference. V (–) is tied to ground. Table II REF ...

Page 9

Power-On with CLR Low The output stage of the AD7839 has been designed to allow output stability during power-on. If CLR is kept low during power-on, then just after power is applied to the AD7839, the situation is as depicted ...

Page 10

AD7839 DUTGND Voltage Range During power-on, the V pins of the AD7839 are connected OUT to the relevant DUTGND pins via G and the 14 k thin-film 5 resistor. The DUTGND potential must obey the max ratings at all times. ...

Page 11

Automated Test Equipment The AD7839 is particularly suited for use in an automated test environment. Figure 21 shows the AD7839 providing the neces- sary voltages for the pin driver and the window comparator in a typical ATE pin electronics configuration. ...

Page 12

AD7839 these DACs can be operated with supplies and –5 V, with the V pin connected and the GND pin connected to DD –5 V. Now these can be used to provide the negative ...

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