AD1170 ,High Resolution, Programmable Integrating A/D ConverterMI IN --$fEtlFltli'rMiS (typical C4 +25°C, Its = +15ll, ll, = +5ll unluss otherwise specified,)
..
AD12250A , 24 bit, 96 kHz Stereo A/D Converter
AD12250A-SG , 24 bit, 96 kHz Stereo A/D Converter
AD1315KZ ,High Speed Active Load with Inhibit Modespecifications (48 mA) typically associated with lineBy combining a high speed monolithic process w ..
AD1324KZ ,Ultrahigh Speed Pin Driver with Inhibit ModeCHARACTERISTICS See Notes 1, 3
Logic High Range - 1.6 +7.0 Volts
Logic Low Range -2.0 +6.6 . Volt ..
AD1376JD ,Complete, High Speed 16-Bit A/D ConverterFEATURES
Complete 16-Bit Converters with Reference
and Clock
t0.003% Maximum Nonlinearity
No Mi ..
AD8186ARU ,450 MHz, Single Supply, Triple 2:1 Multiplexer (G= +1)SPECIFICATIONS V = 2.5 V, R = 150 to 2.5 V; unless otherwise noted.)REF L AD8186/AD8187Parameter ..
AD8186ARU-REEL , 480 MHz Single-Supply (5 V) Triple 2:1 Multiplexers
AD8186ARU-REEL , 480 MHz Single-Supply (5 V) Triple 2:1 Multiplexers
AD8186ARU-REEL , 480 MHz Single-Supply (5 V) Triple 2:1 Multiplexers
AD8187ARU-REEL , 480 MHz Single-Supply (5 V) Triple 2:1 Multiplexers
AD8187ARU-REEL7 , 480 MHz Single-Supply (5 V) Triple 2:1 Multiplexers
AD1170
High Resolution, Programmable Integrating A/D Converter
ANALOG
DEVICES
High Resolution, Programmable
Integrating " Converter
A0117!)
FEATURES
Low Notthmartty..
Integral: 20.00196
Dlhretttial.. 200003556
MMmMu-Buod Design
Programmable Integration Time: , to 350m:
with Resolution from 7 to " am
Programmable Output Data Format
Auto-Zerood Operation and Bectronie Calibration
(No External Trim Potentiometers}
Microprocessor Compatible Interfm
High Throughput: Over so ContrttesittttslSeestnd
for Lin. Cydo Integration Puiod
High Normal Mode RNoetksm 5448 at 60K:
Small Size: , 26' tt 2.6" x 0.55" max
APPLICATIONS
mu Acquisition Systems
Seierttintt Instruments
Medical Instruments
Weighing Systems
Automatic Test Equipment
GENERAL DESCRIPTION
The ADll70 i: I high mdution integnting AID convene:
intmdedfoopplicatiottsrequiristghigh-crartdhigh
thmushput at low cost. A novel txmverdott "dtiteturepruvide
thetaerrrithoutrandiut-r,mhilityandeoeoftue.
The AOtt70 is a complete mimxxxnputer-tnsed mammal
mhuynmmompmedofthreemiotdmnuhighlypndse
chameb+rttdn--ingiechipttu'ctrxoatputer,atidit
custom CMOS controller chip. The ADll70 offers independently
mmmmbk integration time (from one millisecond to 350
milliseconds) and data format (offset binary or two's complement,
than 7 ut22bia). Theomverteris fully luto-zzroed Indahihitx
"peridot-foal-ers/Tomi-ttie-tttrate readings.
The AD1170 my be interfaced to my microcomputer bued
mernittatneaioryrruppedoril0auppedNhiooiambbit
dam tau. The ADll70's adnnmd futures Ire controlbd by
simple mmd: mu to it via this bus.
Theat-tttiii-trm-tlatte-togy/housed
innmuu LM'' M LS'' x 0.55'pechge. Itopetateittrxn 2 IW dc
M +5V dc power.
PRODUCT HIGHUGHTS
l. The ADII70, unlike dull dope converters, otfen the user
tlt-tmytrips-tmin-integration-eb-ting
orteofeemtprmetinegmtitmperiodstarbriouiingiut
ubitnry integration period over the interface bus.
REV. A
Information fumished by Analog Devices is believed to be accurate and
reliable. However. no responsibility is assumed by Analog Devices for its
use, not for any infringements of patents or other rights of third parties
which may result ttttttt in use. No license is granted by implication or
otherwise undo! any patent or patent rights of Analog Devices.
FUNCTIONAL BLOCK DIAGRAM
RIF IN AMA COM
" ' " VOLTS
WC " - " VOLTS
A01 , " Nt
" " Nlc
"tc-e " Eu
"" OUT DATA RDV
LEAVE MC HMS UNCONNECTED
2. The AD1170 mhitecture provides for user programmable
dm format independent of the integration time. All data is
computed to 22-bit resolution and the user my specify my
resolution from 7 to 22 bits. Usable resolution will typically
be limited to Ig.bits due to measurement and tatlibration
noise error.
3. Electronic digital calibration eliminates the need for trim
potentiometer'. Calibntjon an be performed at any time by
Ipplying In exterml reference voltage to the input and invoking
a calibration commutd. The calibration dam is stored in in
internal nonvolatile memory chip.
4. Internal calibration cycles may be programmed to occur
whenever the converter is idle, Isurin; negligible offset drift
md only 9pprnfC 3pm drift.
5. The conversion rate is greater than $0 conversions per second
when prognmmed for 60Hz line cycle integration. The
maximum conversion me is mute: than 250 conversions per
second. using a one millisecond integration period.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel; 617/3254700 Fax: 617/328-8703 Twa: 710/394-6577
Telex: 924451 Cable: ANALOG NORWOODMASS
MI 170 - SPECIFICATIONS (typical Ct.: +25%, V, = +1lill, h = +lill unless otherwise specified.)
m MI. Tm Ma, Uaits OUTLINE DIMENSIONS
“SOLWONI 7 n Bia Diraerukta"horrtininche"muttuts).
ACCURACY
Inzqnl NOW . , (hint 8h SPAN T--
THROUGHPUT RATE' o'ss
Tirtteottt- has 230 conv/S IMO! mmmm
Tmanmkh 16.667111: $0 coavIS MAE "“4“",
Tlnteortr- loan: 9 mnvIS =1‘:
. 0.1m a .5 tel m me: +
DtFFEWiNTtA1. NONLINILANTY Td , :g"
Tam) Co. Teal) ' .
tms mu g 0.01 as SPAN H, mm"
16.567m 1m” ' 0.0003 96 SPAN , A I)
mm mm :o.ooo35 ssSPAN I " t25. l
STABILITY
Spun t. ' ppm SPANPC
POWER SUPPLY REJECTION RATIO
(Spa: Error n. Analog
Suppl! Volme) 60 ppm of RadingN
INPUT CHARACTERISTICS
Amie. Input hug il,ss,
de - , + S V Max
chlIn Nomul-Mod: Vofage - 6 , 6 V
Absolute Maximum
(Without Dump) - 30 - 30 ll
NorIMI-Mcdc Rtitcxion
@6011: " "
(950R: 60 dB
Input BiuCumm l M
Input lmpedmoc l Mn “a
REFERENCE "*
Oulpul vans: s Vdc j.--,
0mm Cum: 2 mA '.60
InpulRuu: 4.5 5.5 Vdc jut. jut! H” ru
[m an ovum
DIGITAL LEVELS
Inputs wnum wan
Law " V I
High LO V ili!EIMIMl
Outputs L
Luv(@4mA) 0.45 v \Q‘fe.
Himmoom 2.. v iiiiti5'ttii5ti,
WARMUP mm; IEtNglWiigltMgliB
lawman! SPAN ' min
m20tmm SPAN 15 min CAUTION: OBS ERVE PROPER PLUG-IN POLABITY TO
POWER REQUIREMENTS PREVENT DAMAGE TO CO NVERTER
o Vund - V; 9 15 " V
+ vb us ' 5.13 v
Srt8lyCurtetttD"itt PIN DESCRIPTIONS
(n7 , IW 12 mh
6i + 5V Ito mA m NGNAL mcmnou
SY ' i
TEMPERATURERaraiE i. 1... '2i,,12i',',',tt2,
RatedNdrmrtance , '70 'C ' " "" mu 'trobe
'rome - " . t5 x: ' tiiii Wm. Dau Suck-
SIZE 1.2." x t3" x 0.55"mx(3l.4 x 63.3 x N.Dlmm t a cmpsmn
, m m» um, Inaum 0-m- Buxv
NOTES Mm High. Indian" Mn Rudy for Comnnm
'Thesmttkreseamuttsruru-oise.itirttoqetrtteemtmedrraeitsr-ixtperiod " DVAID‘ tehtt*9h1nttioter!lyFromMortruortt
mmmm CutmWttterfoetinFigttrr"terrialpe..eo.ehmsue.ersus Coetrrrioneomm_U-
-titnottdrEittmtrttt+. " M8 Mun ttitttt,imHsm.sD.rir.ilue"ttxlrMmttritg
'Tte-ttirmrtr, um mgmgbg grununummamn mm me bput "ttat, tuaq “W” !'fPftt"tetletEteettt, _
Mud www.mmm. mxdm Momma enun " {u 1:32: 'l,',", 2ult 1:33;; 'g,Qdel J','.",!,','.''),'',,, "me,
'as-i-sate-mt-r-ia-i-cl-tl,-),','-,,;-,,,,,-, " trtittittttrmatttF-rtxttt " mur 1l,'pc,'l,tt""'i"""""""''""""" i
Wtt.setttgstrr-sdt'.rtumttrrunnitii-u, " -tw Nopt'vv-Anllu Pcm-Suwly
Srmr'teathsrrssatq'ett to M “haul Ilia. " . tW Pauli" Arman Ivan 3|,wa 3
" menu Mung Commonzmaumm PttirttMrAnattttt 1
IBM PCIXTIAI‘ mum“: Muda- bosrd; A0004 tsee In: Nvmst‘w‘in 1
m of this data sheet for description) " t In rmsunumm J
" -IN Mum: Sigullnwl 2
" nwout "nt-t OSVldlllnuDutvm - "
-m| mm is ' KW 11 lamina! 3m Mruins m. . " mm amm- MI. mommy comma to sum l
" WOW thttt.lCttmmtv':ttt"et-rMnrtt'rt"
Dulm Mu Supp”
" r,',28" Enuml t70ttvtrtCtttttttt8M m
M pun Mmm: tNottreortort.6t.anrtCrutwork
fot Amman: Hem won Pow- tht
31.3! HAL OUT. eztetneetietn"etrt2Mr" Cnnt-dnluoum.
qum ion [SlLM-mll ,Xuth " Dunn
- - _mm m tnmn u 2 lvgk Sign“ I
:34: niaGT" mum»! am n...
”.12." DO NOT CONNECT
REV. A
ADII7U
FACTORY DEFAULT SETTINGS
The ADIWO’s interns] ttttttvolatile memory stone vuiou: AID
pwnet-xxpatnatedbythettrertnsclortheittagmtiou
period, output data format, dilatation coefficient, em). The
ADII70 is calibrated ttt the factory with the following default
settings:
FORMAT: 16-bit, offset binary
DEFAULT T(int): 16.667 milliseconds
(code 2)
DEFAULT T(ul): loo milliswtmds
(code 4)
AD11NlutCHtTTiCT0iALtmatWEW
Thelum70iirmtpkemiarsattripor-beted mutement
'ahsrtetthtmairtinrthrereruiore1ernents:0ighiyptecige
chamebtundrtgcmtverer,asirdechiprnicrxtcnmputer,antn
ctutanCM0Scmttmlkrdtip.
Theheartofttiemeansmnentuehniqueirthecurgeticiag
mm (mentally: volnze to frequency comma). This
croemrternseansrmtlteirtputtigrulbyblndttr-poetiotul
currentatpimtaoirtofpreriselyatntrxtlkdreFneerurtent
puke: using an integrator. The micmpmtxssor, together with
theamnrittgandptiregcimuhrwithiutheCM0Scuntru1ler
dtip,rtt-thepen'odtrfdteref-urmttpt1isesby
irtterpoluirtgtttmtttsiagoMmelocktigrul.Theresit1tirtg
"----,-.rr',rLi-r..,'i'-r.iCT,'rC--
a-ill''] 'rr)--
"ls ah...
n.“ X l l it
tuv% - *1
o---------------).)------
data is converted to binary representation by the use of floating
point firmware routines within the micmprtxmsor,
When the ADll70 is triggered to perform a conversion, two
tenante phages are performed: first, In integration phase, where
the input signal is actually measured, Ind then a computation
phase, where the data from the integration phase is processed,
along with both the volatile and nouvohtile alibnu'on data, and
{omitted for output " the user desires.
The duration of the integration phase can be prognmmed by
the user, and my be " short " one millisecond, or " long as
350 milliseconds. The cornpuutitxt phase always lasts approxi-
mately three milliseconds and commences immediately after the
integration phue is over. Therefore, the total conversion time
willeqtu1theuserprtamnmedintegmetimepluotixed3
milliseconds. Statue signals are ptovided to indicate when the
den it ready end when the converter tmy be retriggered for the
next conversion.
For maximum stability, the ADll7O periodically calibrates itself
by performing measurements upon a zero input signal and a
full-scale signal provided by the internal reference. This technique
cancels my drift within the charge balancing converter itself,
resulting in negligible ofhet drift, and gain stability equal to
that of the reference. Calibration cycles may be programmed to
take place whenever the ADll70 is idle, or they may be invoked
under tyxtem control.
I... tw._.{
WNTE CYCtE WHO REQUIREMENTS
M crc" TtMtHt1 “WW:
HWY“ DEW!!!“ MIN TYP Malt wts 'MAMETIR “MN MIN TY MAX UNITS
n. nu mm mm. m m _ 'ar=we. mm 20 us
1.. WWIeIDW a m _ CHquWIuw D n-
tom CwWNoHTm 0 m toe CMdeIct HoHT'm O m
In Mama snupTim- " m tas Manet setup‘nmc to m
I... Audtm New line 0 u t... Mme mm o m
" DmVeld‘l’lm too at 1.. Memm- Io nu
t... Dan ”on Time Io tn to, MI Hold Thu " M
Figure r. Timing Diagrams and Requirements
REV. A
A0117!)
TheAD1170 atrtaitunoitttertul trim; ia spencecuneyie
fhctorrcahhnmitrrtuingtheECAL0ilectmnicChLittmtiots)
ature.Thufeatrueiofimomrermstinewhicttmeasaresan
exermlly applied tefexence voltage, compare: it to the internal
refereneevotngenndeomputetupaneomctionfectotwhich
'tsstoredinnoemsutiierriemory. Thearrrectioniixtoristhen
qplied to all submuent measurements, thereby compensating
fbrtherefuencrermr.TheEChLfitnctitmmarbeitmskedby
th-tanrtime,thetettrrxpucingtheusualtrirnpttteritiottteter
with I My electronic calibntion capability.
UNDERSTANDING THE ADIUO SPECIFICATIONS
The AD1i70, beam ofiu unique eonveuion technique, is
'pecitied quite differently than more conventional integming
atttrettiThetultmingterti-ilihdptheuterttn1nderstand
''heretlteetsurmsofemsrare,andhowtttestmathebest
possible pufcnnence fiom the mnvener.
'I‘heteuetwoprhuryeoureetofertorintheADll70:integnl
ocaiineetity ofthechaaeblrsdngaxmrter, which inthiettcm
allr-iaueqtullnrtrdusoftheirtttuittttpetiodand
"libmtinnperiodiandthenoiseemsroftherttearurernent/cali-
bationpmeees,whichixefuncticnoftheintejntionpmiod
"dmli'bmiortperiodaseriertzdbrtheuser.
[NTEGRALNONLINBARJTY
Theinugmlnoetlinearityofthecurgebalancirtgasemrer
(Mi: t10pprn(t0.00i%)of8psn.Thiopedtitatitxtion
Nndpoine' 'toetiinearity mute” thetypicxldeviltion
"enhmstastm'ghtiinedrorutset-theCBctmtpttot -5
mlaartdittonqmot '$vrrlts.Thisspeciiicationexcltukony
1fthecnrmrermsextenuilyca1ibratedatiaendpointst-5
vultund +svxattshtherttheinegmlrtsmlirtearity-ti0lstsbe
thetehtiveeecunqoftheeonvmer.1‘hixisnotthecueindte
ADHN,htmerer,betnittecaiibmiusis performed immully It
Out! +Smlts,mtherthan -Send +Seolu.Thitcalibmioet
ttani-ttterin-tttport/ttFt/tteerie'
CBC,resttttsittthecurvedtmminFtgtue2.
- ' VOLYS . S V0115
I V I -..-"' 1
man must ...""
- J ------
-------- Imam
....-" MrHUNCMtrrr
Figure 2. Relative Accuracy and Integral Nonlinearity
when Calibrated
As shown in the diagram, the calibration technique tends to
euueme the relative error It the negative end of the scale, and
reduce the error between 0 end +5 volts. This ehmcteristic
hnppent to be most beneficial when using the AD1170 in systems
where the input comes from I sensor whose signal is mostly
positive, such " 11 thermocouple.
For tystems where the uset desires to minimize the relative
error equelly news: the whole span of the converter, it is possible
to intentionally introduce I spun error during the ECAL procedure,
" shown in Figure 3. This scheme sacrifices positive full-mle
atxumcyinordertominimizenqptiveftiilscaleerwr.Thenet
result it I relative lcemcy equal to the integral nonlineuity.
" won: f .s vous
L I _L
mttcut -
mmmumrv td-"
NTEN‘HONAL MtscAuenmou
sauna“ tum Arnom
(NOON 5c“!
Figure 3. Relative Accuracy with Intentional Span Error at
In both cases the eecuncy of the input offset (which is servo
contmued) is not compromised.
MEMUMMENT'lChuBRATT0N NOISE
Measurement noise Men to the conversion-to-convenion uncer-
uinty aueed either by mathematical trunation or device noise.
Ceh‘bmion noise is mm!” the measurement noise resulting
from the cdihntiun pm. The converter stabilim itself by
performing internal menumnents ofthe reference, and of ground ;
these measurements have the same nneeminty due to noise as
does the Donne! mammal pm.
The measurement end calibration noise error of the ADll7O
determines the differential linearity, or usable resolution, of the
convene. This penmeter determines the usable resolution
beau: it defines what codes can be seen through the noise.
The 'perified velue it the Amount of enor, in either direction
from the average reading, which will not be exceeded for 95%
of all crmversions. This pentmetet, u in all integrating converters,
is ' function of the integmtion time; long conversions result in
very high resolution, while thort conversions provide lower
resolution. In the AD1170, all internal computations u: always
carried out to 22-bit resolution, but usable resolution is limited
by the peek-to-peek noise, as determined by T(cal) end T(int).
The chm shown in Figure 4, illustrates the typical peak-to-peak
noise (in ppm Span) versus T(int) and T(eel). These numbers
can be used to indicate how much usable resolution an be
T(eal): tms 10ms 16.7ms 20ms 100ms 166.7ms 300ms msfllla, UNITS
T(int)=1ms 208 115 115 114 113 112 111 110 zppmofSPAN
t0ms // 24 18 16 " 13 13 12
16.7ms '///r / 14 13 s 3 s 8
Mms '//////f/h 12 7 7 7 7
100m Af'' // 1/ // , Aff 4.0 4.0 3.5 3.5
166.7ms ///’// 1,/yfffdfd/yff"y 4.0 3.5 3.5
Moms /ll'frv/if//,t/jr/tVMrrW/f, as as
Figure 4. Typical Peak-to-Peak Noise (in ppm Span) Versus Wind and Tical)
REV. A
