AD2022_15 Datasheet, PDF (1/6 Pages) Analog Devices – LINE POWERED FUNCTIONAL DPM

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3~ Digit
LinePoweredFunctionaDlPM
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FEATURES
~
Space and Power for Large 3~" x 4" (95 x 102mm) Custom
Design Printed Circuit Card
"Second Generation" MOS/LSI Design
Large 0.6" (13mm) lED Display
AC line Powered, Universal Transformer
i:1.999VDC Full Scale Range
Auto Zero Correction
AD2022: limited Differential Input and Character Serial Data
Output
AD2022/1: Full Floating Input Isolation and Parallel BCD
Data Output
Optional Ratiometric Operation
Industry Standard Case Design
OAPPLICATIONS
Dedicated Transducer Readout for Temperature, Pressure, pH,
Bor Any Other Physical Parameter
Custom Test and Measurement Equipment with Customer
S _{Designed Signal Conditioning, and/or logic Circuitry on}
Printed Circuit Board Internal to DPM
O _{GENERAL DESCRIPTION}
L _{The AD2022 is a low cost 3~ digit, AC line powered, "func:-}
8 E tional" DPM. The AD2022 accommodates a large 3.75" x."
(95 x 102mm) printed circuit board with over 12 square inches
T _{(7700mm2) of usable circuit space for adding extra signal con-}
E ^{ditioning and/or logic circuitry. For powering additional signal}
Thus, only minimum Stocking for expon is required to satisfy
widely varying circumStances of AC power.
SECOND GENERATION DESIGN
The use of MOS/LSI (Metal Oxide Semiconductor/Large Scale
Integration) integrated circuits in the AD2022 reduces the
number of components, cuts power consumption and greatly
increases reliability .
,
VERSATIUTY FOR SIGNAL CONDITIONING
conditioning circuitry. regulated i:12VDC at 20mA is provided. ^{The standard AC26lS function card is laid out for easy bread-}
For logic circuitry, +SVDC at l00mA referenced to digital
boarding. Solder pads arc provided on 0.100 inch spaciDg to
,round is available (3OmA if the isolated parallel BCD output
fit Standard dual in-line packages and other components.
option is specified). The special function board is connected to
the AD2022 convener board via nDbon cable. The function
Special tracks arc provided for bussing power to components.
Provision exists on the front of the AC261S to mount tWo
board also has an external 18 or 36 pin input/output connec:-
tor with gold plated fingers. A Standard breadboarding card is
available or special layout printed circuit board (to suit the
particular application) can be used.
trim pots which can be adjuSted from the front of the DPM
after removing the snap-on lens. Ribbon cable connects the
AC261S breadboarding card (or same size special layout func:-
tion card) to the DPM convener card. Regulated i:12VDC and
regulated +SVDC arc available to power special circuitry. Height
The AD2022 convener measures bipolar input voltages over
the full scale range of i:l.999VDC with an accuracy of %a.OS"
reading fO.02S'16 fun scale %1 digit. The design of special signal
clearance allows mounting modules up to 0.65" high. If ratio-
metric operation is desired, one plated-through hole on the
convener board is drilled out, and the reference-in and
conditioning circuitry is simplified by the AD2022 limited
rcference-out connections are made on the function board.
differential input (standard) which reduces effects of ground
loops and provides common mode noise rejection.
VERSATIUTY FOR DATA INTERFACING
The AD2022 displays readings on large 0.5" (13mm) high LED
displays. Both (+) and H polarities are indicated. Controls arc
provided fa: blanking the display and for selection of any of
three decimal points. A fr;nrth decimal point is selectable by
internal jurJ;per.
The BCD data output of the AD2022 is presented in bit parallel,
character serial format compatible with CMOS logic systems.
Some applications, such as interfacing with microprocessors.
arc simplified with this data fonnat. Applications involving line
printers or comparators often require parallel BCD data out-
puts. The AD202211 is an optiopal version of the DPM that
The AD20?2 is availabJ~ :~, vperation at any AC line voltage
and freq'!'::.'H:Yrequired :I-..'..;"..ghouthe world. And, since the
(co"ti,,"~d 0" fHlg~J)
AD20:!2., ..>a "univ::rt."'t' ~.:;:'Isfonner, simple bridging be-
t\\'ec'\ .9~' pads all:::':- ~. . "'$'j '~Ie(tion of AC input voltage.
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Inforrn;:',io'. ; nnished by "~".:~.,,,;,;D:!Vices is believed to be 8CCur8te
Route 1 Industria' Park; P.O. Box280; Norwood, Mass.02062
end reii',!;!; ioV(llver. no res~(1r.~ibilitV is ~sumed by Analog DevlCft
Tel: [phone]
TWX:710/394-6577
for i<:s':<: ..'" for any i.~j:if";>' d.11.$;of patenn or other rights of third
partie--
nay resuli '..;,. ,~ 'se. r~o Ii<:ense is granted by implica-
WestCoast
Mid.West
Tex.
tion
,se under;,;.. .. " '" <)r p"U~nt fI\IIts of Analog Devices.
213/595-1783
3121894-3300
214/231-6094