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부품번호 | ZN425J 기능 |
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기능 | 8-Bit D to A/A to D Converter | ||
제조업체 | FERRANTI | ||
로고 | |||
D.A/A-D CONVERTER
zN425E
2il425J
FEATURES
O Type
: Monolithic, containr D-A
with counter and reference
O Accuracy
: O.2YoFSR at 25'C (+* tSB
linearity)
o Operating Ranges
: O'C to 70'C (ZN425E)
-55'C to +125'C (ZN425J)
O Gompatibility
: TTL and CMOS
O Powor Supply
O Settling Time (D-A)
: Single *5V
: 1 pstyp.
O ConversionTime(A-D) : l mstyp., uring ramp ond
comparo
O Extra Gomponentr Required
D-A
: Reference capacitor (dircct
voltago output through
1Oko typ.)
A-D
: Comparator, gate, clock
rnd reference capacitor
16 LeadD.l.L.
DESCRIPTION
The ZN425E (or ZN425J) is a monolithic S.l.G. 8-bit digital to analogue convortor
containing an R-2Rladder network of diffused resistors with precision bipolar rwltchos,
and in addition a countor and a 2.5V precision voltag€ roference. The counter ir I
powerful addition which allows a precision staircase to be generated y6ry rimply
merely by clocking tho count€r.
vnEr
Output
cv
8itI
B i t7
8 i r6
B i r5
5elect
( H ' g hl o . C o u ^ l e r )
Clock
or I BrtBinarycounter or
F i g .1 - B l o c k D i a g r a m
zN425ElZN425J
Notes:
f . The Logic Selectpin (2) must be held low when the bit pins (5, 6,7 ,9, I 0, I 1, 12 and 13) are
driven externallY.
2. To obtain countoroutputson bit pinsthe Logic Selectpin (2) shouldbe taken to *V66 via a
I kO resistor.
3. The ZN425J differsfrom the ZN425Ein the following respects:
(a) Forthe ZN425J,the maximumlinearityerrormayincreaseto +1 LSB overthe tempera-
tur€ranges-55'C to 0'C and+ 70'C to + 125'C.
(b) Maximumoperatingvoltage.Between70'C and 125'C the maximumsupplyvoltageis
reducedto 5.0V.
(' c')
Offsetvoltage.The differenceis due to packageleadresistanceT.hisoffsetwill normally
be removedbythe settingup procedurea, nd becausethe offsettemperaturecoefficieny
is low, the specifiedaccuracywill be maintained.
\
4. The device may be resetby gating from its own counter.
3wltch.3
Fig.3 - Bit lnputs/Outputs
It Pin 2is high then th€ output equalsthe CIoutput of the cotrespondingcountor.
lf Pin 2 ir low then ths output üansistor,Trl is held off.
PIN CONNECTIONS
Gtound t
Input Scl.ct 2
CounlcrRcact 3
Clock 4
Blt8 5
Bir, 6
Eirt 7
*Vc 8
16 Vu Output
15 VrrrInput
l4 Anllogu. OutPut
r3 Bit1 (M.S.B.)
t2 Bir2
11 8ir3
10 Bir4
9 8ir6
4페이지 zN425ElZN425J
JIJIJI
Clock InDl
l/A
6.gkn RempOul
-.
ä
rSsetn '
JL
Fig.6 - PrecisionRampGenerator
4021
4. Alternative Output Buffer using the ZLD74|
The folfowing circuit, employingthe ZLD741 operationalamplifier,may be used as th€ output
bufferfor both the 8-bit Digitalto AnalogueConvener(Fig.a) and the PrecisionRampGenerator
( F i g .6 ) .
6.Ekvt-
5kn
Set F.S.R.
lEk.rL
(?6ta
Fig.7 -The ZLD741as Output Bufler
5. Further Applications
Detailsof a wi{e range of additional applications,describedin the Ferrantipublication'Appli-
cation Repott-ZN42sE8-bit A-D/D-A Converter'a, realso available.
7
7페이지 | |||
구 성 | 총 8 페이지수 | ||
다운로드 | [ ZN425J.PDF 데이터시트 ] |
당사 플랫폼은 키워드, 제품 이름 또는 부품 번호를 사용하여 검색할 수 있는 |
구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
ZN425E | 8-Bit A to D D/D to A Converter | FERRANTI |
ZN425E8 | 8-BIT D-A/A-D CONVERTER | GEC Plessey |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |