AD7841AS Analog Devices Inc, AD7841AS Datasheet

IC DAC 14BIT OCTAL VOUT 44-MQFP

AD7841AS

Manufacturer Part Number
AD7841AS
Description
IC DAC 14BIT OCTAL VOUT 44-MQFP
Manufacturer
Analog Devices Inc
Datasheet

Specifications of AD7841AS

Rohs Status
RoHS non-compliant
Settling Time
31µs
Number Of Bits
14
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-AD7841EBZ - BOARD EVAL FOR AD7841

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AD7841AS
Manufacturer:
AD
Quantity:
5 510
Part Number:
AD7841AS
Quantity:
5 510
Part Number:
AD7841AS
Manufacturer:
ADI
Quantity:
188
Part Number:
AD7841ASZ
Manufacturer:
Analog Devices Inc
Quantity:
10 000
Part Number:
AD7841ASZ
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Part Number:
AD7841ASZ-REEL
Manufacturer:
Analog Devices Inc
Quantity:
10 000
REV. B
a
LDAC
DB13
DB0
WR
CS
A0
A1
A2
AD7841
GND
V
CC
14
14
14
14
14
14
14
14
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
14
14
14
14
14
14
14
14
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
14
14
14
14
14
14
14
14
V
REF
V
GH
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 AD7841 contains eight 14-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 AD7841 accepts 14-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 AD7841 is available in a 44-lead MQFP package.
REF
Fax: 781/461-3113
(+)
DAC C
V
CDEF
REF
(–)
Octal 14-Bit, Parallel Input,
DAC D
DUTGND
CLR
DAC E
CD
© 1999-2011 Analog Devices, Inc. All rights reserved.
DUTGND
Voltage-Output DAC
EF
DUTGND
DUTGND
AB
GH
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
AD7841
V
V
V
V
V
V
V
V
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
A
B
C
D
E
F
G
H

Related parts for AD7841AS

AD7841AS Summary of contents

Page 1

AD7841 14 14 INPUT REG A DB13 14 14 INPUT REG B DB0 14 14 INPUT REG INPUT CS REG INPUT REG A2 E ...

Page 2

AD7841–SPECIFICATIONS Parameter A ACCURACY Resolution 14 ± 4 Relative Accuracy Differential Nonlinearity –0.9/2 ± 8 Zero-Scale Error ± 8 Full-Scale Error ± 2 Gain Error 2 Gain Temperature Coefficient 0 Crosstalk 120 2 REFERENCE INPUTS DC Input ...

Page 3

AC PERFORMANCE CHARACTERISTICS A & B Parameter Versions DYNAMIC PERFORMANCE Output Voltage Settling Time 31 Slew Rate 0.7 Digital-to-Analog Glitch Impulse 230 Channel-to-Channel Isolation 99 DAC-to-DAC Crosstalk 40 Digital Crosstalk 0.2 Digital Feedthrough 0.1 Output Noise Spectral Density @ 1 ...

Page 4

AD7841 ABSOLUTE MAXIMUM RATINGS (T = 25°C unless otherwise noted GND . . . . . . . . . . . . . . –0 (Whichever Is Lower) V ...

Page 5

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

Page 6

AD7841 TERMINOLOGY Relative Accuracy Relative accuracy or endpoint linearity is a measure of the max- imum deviation from a straight line passing through the endpoints of the DAC transfer function measured after adjusting for zero-scale error and full-scale ...

Page 7

V = +15V –15V SS V (+) = +5V REF 1 V (–) = –5V REF –1 –2 0 2048 4096 6144 8192 10240 12288 14336 16384 CODE 1 0.5 ...

Page 8

AD7841 Unipolar Configuration Figure 2 shows the AD7841 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 AD7841 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 AD7841, the situation is as depicted ...

Page 10

AD7841 DUTGND Voltage Range During power-on, the V pins of the AD7841 are connected OUT to the relevant DUTGND pins via G and the 14 kΩ thin-film 5 resistor. The DUTGND potential must obey the max ratings at all times. ...

Page 11

The AD7841 should have ample supply bypassing located as close to the package as possible, ideally right up against the device. Figure 11 shows the recommended capacitor values of 10 µF in parallel with 0.1 µF on each of the ...

Page 12

AD7841 The AD8803 has an output voltage range of GND V). To trim the V (+) input, the appropriate trim range REF on the AD8803 DAC can be set using the V allowing 8 bits of ...

Page 13

... MIN 0.10 COPLANARITY VIEW A ROTATED 90° CCW ORDERING GUIDE 1 Model Linearity Error (LSBs) AD7841ASZ ±4 AD7841ASZ-REEL ±4 AD7841BSZ ±2 AD7841BSZ-REEL ±2 EVAL-AD7841EBZ RoHS Compliant Part. REVISION HISTORY 1/11—Rev Rev. B Changes to Absolute Maximum Ratings, Lead Temperature ...... 4 Updated Outline Dimensions ........................................................ 13 Moved and Changes to Ordering Guide ...................................... 13 © ...

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