ttndustrial
rtion
intronies
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U\I75 UUIRA-IINEAR
ISOIATIONAMPLIIIERWITH
E}fiT,RNAtSYNCCAPABITITY
Fully Compatible with 12-Bit Acquisition Systems
FEATURES
r
r
.
.
UL ComponentRecognized
Provision for External Synchronization
High Linearity: 0.fi)590 Peak, Typical
High Input/Output Isolation:5000VDCcontinuous,
3000vACRr\{s
o 10fi):l ProgrammableGain
. Low Drift: +0.0190/oCMaximum
r l26dB Common-ModeRejection
The Model IAl75 Isolation Amplifier featuresvery
high linearity,input,/outputisolation,and common-mode
rejection,very low drift, and externallyprogrammable
gain. Its 0.00590linearityassurescompatibilitywith l2-bit
data acquisitionsystems,and its ability to operateat
common-modeinput voltagesup to 5000VDC enables
operationwith singlesourcesin high voltagesystemsand
other hazardouslocations.Common-moderejectionis at
least120dB with sourceimbalanceof up to 5000ohms.
lnput voltagenoiseis lpV, lOHz to I kHz, and current
noiseis l0 pA for the samerange.The gain of the amplifier is programmablefrom lV,/V to 1000V/V by meansof
value.The internaloscilan externallyconnectedresistance
lator usedto providemodulationand demodulationfor
with thoseof assoinput isolationcan be synchronized
ciatedModel IAl75 amplifiersby meansof an external
phenomena
trigger,to avoid impositionof beat-frequency
on the output signals.An independent+ I4VDC, + l5 mA
supplyin the input section,with the samevoltageisolation
as the amplifier input, is usedto power an externaltransducer,or preamplifier.
BLOCKDIAGRAM IAI75
CHARACTERISTICS
(Typicrf, @ 25"C, Vs = + 15 VDC unless oaherwiscnoled,)
GAIN (Non-lnverting)
I to 1000V/V
Range
Formula
I + (30k4/Rg)
Deviation from Formula
t lqo
"C
r s . T e m p e r a l u r e( 0 t o + 7 0 ' C )
t 0.00590,/
(0
vs. Temperature to + 70'C)
t 0 . 0 1 9 0"/C m a x .
t 0 . 0 1 9 0m a x .
Nonlinearity, t 5V Output
Nonlinearity, t lOV Output
t 0.0290max.
INPUT VOLTAGERATINGS
LinearDifferentialRange
Max. SafeDifferentialInput rms
l25V rms
Continuous
Peak Pulse. 5 ms Duration. One Pulse/Sec t 600V
Max. CMV, lnputs to Outputs/Power Common
Peak AC, 6O HZ, I Minute
3,m0V
Peak DC Continuous
i 5,m0v
CMR, Inputs to Outputs, 60 Hz
l 26dB
Balanced Source lmpedance
l20dB
5kQ Source Imbalance
CMR, lnputs to Guard, 6O Hz
80dB
5kQ Source Imbalance
Max. Leakage Current, lnputs to Common
I 15 vAC, 60Hz
8pA max.
INPUT IMPEDANCE
Differential
Overload
Common Mode
l0'all3 pF
21k9
l0''all20pf
INPUT BIAS CURRENT
I n i t i a l ,@ + 2 5 " C
(0 to +70'C)
vs. Temperature
t znA
"C
r 0.01nA/
INPUT NOISE
Voltage,
0.01 Hz to l0Hz
lOHz to lkHz
Current
0.0lHz to lOHz
}.REQUENCY RESPONSE
Small Signal, - 3dB Cain = l00V/V
Full Power, 20V p-p Output
Slew Rate
OFFSETVOLTAGE.REFERREDTO INPUT
lnitial@
, +25'C
(0 to + 70'C)
vs. Temperature
Gain - IVlV GVl'C max.)
Gain = l00V/V (rrvl"C max.)
At otherGains(/V,/"C mil.)
vs. SupplyVoltage
RATED OUTPUT
Voltage,50kQLoad
Output Ripple,20 kHz
Output lmpedance
Mu. CMV. Outout Common to PowerCommon
PeakAC or DC Continuous
S H IE L D
GUARO
LO IN
*Vs oUT
V5OUT
CONNECTION NOTES:
L Gain Adjustment Resistor(Rn) is connectedbetweenGAIN and
LO-lN pins.
l. If no output-offset adjustment is required, connect LO-OUT to
COMMON pin. Otherwise,consult factory.
r at(araatrrr
.,I;I
.LL
rqu)
-
a lOV min
ISOLATED POWER CIRCUIT
Voltage, t l5 mA Load
Accuracy
Current
Regulation
No load to full load
A Gain
A Output Offset
A Input Offset
POWERSUPPLY,SINGLE POLARITY
Voltage,
for ratedperformance
vollage.
t urrenlCurrent,
External
op€ralrng
oulescent
full load
Sync. Frequency
lrV p-p
lgV rms
lpA p-p
IkHz
500H2
30mV/ps
+ 5/G)mV
r35
:t l5
i(15
20/G)
a ( l + 20/C)pv/v
1 l0V min
lOmVp-p
l.Oka
t 50Vok
t 14vDC
t 5qo
t l5 mA min.
+0,
29o
+ 0.00590
+ l00tV
t 5sV
+ l5VDC, :t0.5V
+ l2 to + ISVDC
70mA
lOOmA
7 - 8 kHz, 5VDC @
50qoduty cycle-
TEMPERATURE RANGE
Rated Performance
Storage
0'C to 70'C
- 5 5 ' C r o+ 8 5 ' C
CASE DIMENSIONS
MATING S(rcKET
NOMINAL WEIGHT
sl 32
3 . 5 "x 2 . 5 " x . 6 2 "
1 . 3o u n c e s
u\l 84 lowcosT, H|GH-UNEARITY
ISOIATION AJIIPLITTER
WTTH
E}fiERNAt SYNCCAPABITITY
Fully Compatiblewith l0-Bit Data AcquisitionSystems
FEATURES
o UL Component Recognized(lAlE4)
o Provision for External Synchronization
o High Linearity:0.02590Peak,Typical
. 2500V Input/Output Isolation
. 126dB Common-ModeRejection
. lfiX):l ProgrammableGain
o S m a l lS i z e :o n l y 1 . 5 " x 1 . 5 " x 0 . 6 3 "
CHARACTERISTICS
(Typlcrl, @ 2S'C, Yr = + f 5 VDC gnless otherwise noted.)
tatl,
cAlN (Notr-lnvcrtint)
The Model IAlt4 IsolationAmplifier is an ultracompactmoduleoffering high linearity,2500-Voltinput/
output isolation,126dB common-moderejection,externally programmablegain, a floating internalsupply for
poweringan externaltransducer,and externalsynchronization of the internaloscillatorusedin obtainingthe input
isolation.Its 0. I q0 linearityassurescompatibilitywith
l0-bit data acquisitionsystems,and input voltagenoiseis
held to lpV, l0 Hz to I kHz, with l0 pA maximum currenl
noisefor the samerange.The internaloscillatorusedto
providemodulationand demodulationfor input isolation
can be synchronized
with thoseof associated
Model IAl84
amplifiersby an externaltrigger,to preventimpositionof
phenomenaon the output signal.An indebeat-frequency
pendent + l5 VDC, + l5 mA supplyin the input section,
with the samevoltageisolationas the input, can be usedto
power an externaltransduceror preamplifier.
BLOCK DIAGRAM
i;n
IA IE4
.u1'jJli."J\f
'-l
CAIN
S H I TL D
GUARD
LO IN
+vs OUT
-V5 OUI
T-
1.5 ?(f8 6l) - +J
,ax.
I
i
l
T-I
| , 5 ?( l6.6r)
6{06.26)
Dcviation from Fornula
vs. Tcmpcrature (0 to + ?0.C)
Nonlinearity, G = lV,rV to
l0v,/v
it'
ifoto
i 0.01 5qol t
@!5V, !0.025o/o
@il0V, i0.lqo
@ 110V, t0.2qo md
INPUT VOLTAGE R,IITING
Lincar Diffcrcntial Rangc, C =
lV/V
i lov min.
Mu. Safc Diffcrcntial Input
Continuous
l25V rms
PulF, loms Duration.I
pulsc/Io ss
r6mvpt max.
Md. CMV, lnputsto Outputs
AC,60 Hz. I Minutedurarion 2J00Vrms
Pulsc,loms duration,I
pulsc/Io sG
i250ovpk mu.
With 5l0kQ in scrieswirh
Guard
t 5movDk mu.
. 2500V;kmil.
Continuous,AC or DC
CMR, Inputsto Ourpurs,60 Hz,
Rc<5kQ
BalancedSourcclmpcdancc l26dB
5KQSourcclmbalancc
l20dB
CMR, Inputsto Cuard, 60 Hz
lkQ Sourcelmbalanac
80db
Max. LeakageCurrent,
Inputsto Power
Common@ | l5 VAC, 60 Hz l.2FA rms mu.
INPUT IMPEDANCE
Differential
l0'all3pF
Overl@d
2'tk9
Comon
Mode
5 x l 0 " a l l 2 0p F
INPUT BIAS CURRENT
Initial,@+25"C
t2nA
(0 to + 70"C) i0.0lnA/.c
vs. Temp€raturc
INPUT NOISf,
Voltage
0 . 0 5H z t o l o H z
loHz to lkHz
lpV rms
Currcnt
0.05H2to loOHz
5pAp-p
l0Hz ro lkHz
lopA rms
FREQUENCY
SmailSignal,- l d B c = l v l v
to l0v,/v
lkHz
Full Powcr, l0v p-p Ourpur
Gain = lVlV
500H2
Gain = lOv./v
J00Hz
RecoveryTimc, ro i l00rV after
applicationof a 6O0Vpk
differcntialinput pulsc
50ms
OFFSET VOLTAGE. RETERRED TO INPUT
I n i t i a l ,@ + 2 5 t
r(l + s/Clmv
- 0a(ro?l0rA
RATED OIJTPTJT
Voltagc,50kQ Load
Output lmpedance
Mu. CMV, Output Common
Peak AC or DC Continuous
l-_
o.r(z sr)
GR|O
i lov min.
lkA
to Power Common,
r sOV Dk
Volta8c, a5 mA Load
r 15 VDC
! 5o/o
t I5 mA min.
+0, - 3qo
l00m V p-p
V o l t a g e .R a t e dP e r f o r m a n c e
V o l r a p eO
. Eratinc
Curre-nt,Quiesceni
Current. Full Load
E x t c r n aS
l y n cF r e q .
r l5VDC, r.5V
' ( 8 r o 1 5 . 5 )V D C
+ 20mA
50mA
l 3 t o 3 ?k H z . 5 V D C @
50qoduty cycle
RANGE
Ratcd Performance
Storagc
EOTTOf, +l
vtEw
a65
r l5
t(15 + 50/C)
+ JolC)sVlV
t(l
Accuracy
Currcnt
Regulation,NL to FL
Ripple,lmkHz Bandwidth
TEiIPE'I^Tt'RE
iI
i
20 {5 OA
T-
I to lomv/v
Cain=(l+l00k!l,
vs. Temperature (0 Io + 70"C)
Cain = lV,/V (!V,/'C mu.)
Cain = lmV/V (fvlf
mu.)
At other Gains (//V/"C md.)
vs. Supply Voltage
CONNECTION NOTES:
l . G a i n A d j u s t m e n tR e s i s t o (r R e ) i s c o n n e c t e db e t w e e nG A I N a n d
LO-lN pins.
2. lf no output-offset adjustment is required,connect LO-OUT to
COMMON pin. Otherwise,consult factory.
l.-
Range (50kQ Load)
Formula
0to +70t
-55"Cto+85"c
1.5"x1.5"x0.62"
1.3ounces
sl 14
1A284tOW COST,HIGH-TINFARITY
ISOIAIION AMPTITIER
Fully Compatiblewith 10-Bit Data Acquisition Systems
FEATURES
CHARACTERISTICS
(Typicrf, @ 25"C, Vs = + l5 VIrc utrlcsrothcrwbc no&d.)
rA2t4
e Linearity: 0.02590Peak, Typical
. 2500V Input/Output Isolation
. 126dB Common-Mode Rejection
r l0:1 ProgrammableGain
GAIN (Non-lnv.rth!)
Rantc (50kQL@d)
Formula
Dcviation from Formula
vs. Tcmpcraturc (0 to +70"C)
= lVlV ro
Nonlincarity,c
tov/v
The Model IA2E4 lsolation Amplifier is an ultracompactmodule offering high linearity, 2500-volt input/
output isolation, 126dB common-moderejection,programmablegain and a floating internal supply for powering
compatian externaltransducer.Its .1E0linearityassures
bility with l0-bit data acquisitionsystems,and input voltage
noiseis heldto I V, l0 Hz to I kHz, with l0 pA
maximum current noisefor the samerange.An independent
+ 15VDC, + l5 mA supplyin the input section,with the
samevoltageisolation as the input, can be usedto power
an externaltransduceror preamplifier.
BLOCK DIAGRAM IA284
lnitial, @ + 25qC
vs.Tcmpcraturc(0lo +70"C)
CONNECTION NOTES:
l . C a i n A d j u s t m e n tR e s i s t o (r R s ) i s c o n n e c t e db e t w e e nC A I N a n d
LO-lN pins.
2 . l f n o o u t p u t - o f f s ea
t d j u s t m e n ti s r e q u i r e d ,c o n n e c tL O - O U T t o
C O M M O N p i n . O t h e r w i s ec, o n s u l tf a c t o r y .
T-
@r5V, t0.025q0
rlov, io.lqo
i l0V, f0.29. md
24OVrms
6500Vpk max.
2J00vrms
r 2500vpkmu
t SmOVpkmu
I 2500vpl md
l 26dB
| 20dB
todb
l . 2 F Ar m sm u .
l0'4ill0pF
390ka
5 x l 0 ' " 9 1 1p2F0
t 2nA
r0.0lnA/"C
|W
sHrEto
GUARO
LOIN
'vs OUT
vs oul
I
lmkQ
.
l0Jk o * Rg'
r lqo
qC
t 0.01 590/
i l0v min.
Mil. 9fc Diffcrcntial lnput
Continuous
Puk, loms Duration, I
pulsc/10 ss
Mu. CMV, lnputs to Ourpurs
AC, 60 Hz, I Minutc duration
Pulsc, lOms duration,
I pulsc/10 scc
With 5loka in scrics *ith
Cuard
Continuous, AC or DC
CMR, lnputs to Outputs, @ Hz
Rq(JkQ
Bahnccd Sourcc lmpcdance
5KQ Sourcc lmbalancc
CMR, lnputs to Cuard, 60 Hz
lkQ Sourcc lmbalancc
Mu. Lcalagc Currcnt,
lnpu6 to Powcr
Common @ I l5 VAC, 60 Hz
INPUT IMPEDANCE
Diffcrcntial
Ovcrl@d
Comon
Mode
r-
I to l0 V/V
Cain = (l +
| . 5 2 ( 5 86 r )- tA x.
T-
VoltaSc
8cV
0 . 0 5H z t o l 0 H z
loHz to lkHz
l0gv rms
Currcnt
0 . 0 5 H 2t o l 0 0 H z
spA p-p
l0Hz to lkHz
lopA rms
FREQUENCY RESPONSE
3
d
B
C
=
IV,/v
SmallSitnal,
to IOV./V
I kHz
Full Powcr,lov p-p Output
Gain = lVlV
SmHz
Gain = loV/V
JmHz
RccovcryTime, to t 100!Vaftet
applicationof r 600vpk
diffcrcntialinput pulsc
50ms
OTTSE'IVOLIAGtr, RUTf,RXf,DTO INPUT
l n i t i a l ,@ + 2 5 e C
(0 to + 70'C)
vs. Tcmperaturc
cain = lv,/v kvlqc mil.)
r65
Gain = l00v/v (rvlqC mu.) r l5
A t o t h e rC a i n s( r V l t m u . ) i ( 1 5
50/c)
vs. SupplyVoltaSc
r(l
5o/Gly\'l/Y
I
i
Voltagc,sOkQ
Load
t lov min.
Output Impcdance
lkA
Max. CMV, Output Common
to Power Common. Peak AC
t 50V pk
or DC Continuous
r . 5 2( 3 t . 6 r )
6a(16.26)
I
20 {5.Ot
T-
loTTol
vttf
i
l-- o.r(2.54)
oFro
voltage, t5mALoad
Accuracy
Currcnt
i lJ VDC
x59o
l I5 mA min
+0, -1590
voltagc, Raicd
Voltagc,
Cuffcnt.
+ l5 VDC, i .5V
+ ( 8 t o 1 5 . 5v) D C
+ 2ftnA
Ratcd Pcrformancc
StoraSc
NOMINAL WEIGHT
wtTtNc socxET
0to +70qc
- J5'C to + 85"c
LJ ounccs
sl 14
tA294
MEDICATISOIATION AMPTIFIER
tOW NOISE,WITH ACTTVE
INPUT
REFERT,NCE
AND SHIETDDRIVES
CHARACTERISTICS
FEATURES
(Typical @ 25 'C, V. = + l5 VDC unlessotherwisenoted.)
.
r
r
r
o
o
UL componenl recognized
True inslrumenlation front-end
Aclive input reference
Active shielddrives
Low noise:E sv P-P. .05 to lfi) Hz.
High CMRR: 126dB input to output, 120dB input to
guard
o IsolaledPower: + l5V @ 15 mA
o Small size:,2"x 3 "
o ExternalSynccapabilityfor multi-channelmonitors
The Model IA294 Isolation Amplifier featuressmall
size,low noise,high common mode rejection,activeguard
and shielddrives.CMRR is 126dB input to output with
balancedsourceimpedance.CMRR from input to active
input referenceis 120dB. This IsolationAmplifier containsmost of the front-endcircuitrythat is found in
monitor and diagnosticECG's. The IA294 hasa true
instrumentationfront-endfor high CMRR, activeright leg
drive, synccapabilityfor multichanneluse,isolatedpower
( + l5 V @ l5 mA) and separateactivedrivesfor either,
individualshieldedinputsor a common outer shield.This
modelalso features6500V input to output protectionand
6500V differentialinput protectionfor defibrillators.
Input to output leakagecurrentis lessthan l0 FA.
BLOCK DIAGRAM
(IA294I
GAIN (NON.INVERTING)
ACCURACY
vs. Temperature
Non-Linearity
Differential lnput lmpedance
Common-Mode Input Impedance
INPUTVOLTAGE
Max. Safe Differential Input
P u l s e ,l 0 m s D u r a t i o n
Max. Safe Common Mode Input (DC cont.)
INPUT BIAS CURRENT
vs. Temperature
t0v/v
+ 2Vo
+ . 0 1 9 0 /" C
+ 0 . 19 0
3 x l03Qll3pF
5 x l0''all20pF
+lVmin.
+ 240 V rms
+6500V peak
+ 5000 VDC
+2nA
+ .02 nA/ "C
SAFETY CURRENT LIMITS
INPUT NOISE (5 K UNBALANCE)
Voltage .05 to 100Hz, pp
V o l t a g el 0 H z t o I k H z , r m s
Current.05 Hz to I kHz, rms
8rv
COMMON MODE RE.IECTION
I n p u t t o O u t p u t ,C M V : I l 5 V A C , 6 0 H z
BalancedSourceImpedance
5kQSourceImbalance
Two Inputs to lnput Reference
C M V : l O V p - p , 6 OH z
5kQ SourceImbalance
1 2 6d B
1 2 0d b
l0gA max
5lv
l0 pA
OUTPUT
R a n g e( 5 0 k Q L o a d )
Output Impedance
M a x . C M V , O u t p u t st o p o w e r c o m m o n
Offset voltage referred to input
vs. Temperature(0' to 70'C)
vs. Supply Voltage
FREQUENCY RESPONSE
S m a l lS i g n a l , - 3 d B
F u l lP o w e r , 6 V p p
Overload Recovery
ISOLATED POWER OUTPUT
Voltage, + l0 mA load
Accuracy
C u r r e n t ,m i n .
NOMINAL WEIGHT
POWER SUPPLY, SINGLE POLARITY
Voltage Rated Performance
Current, Quiescent
TEMPERATURE RANGE
Rated Performance
Storaee
SOCKET
1 2 0d B
+l0v
I K\Z
+ 30 V peak
+5 mV
t l00sV/'C
+20 tY/Vo
I kHz
500 Hz
20 msec
t 1 5v D C
x 5Vo
t15mA
8 ounces
r 1 4 . 5t o + 1 6V D C
+40rA
0"c to 70"c
2 5 ' Ct o + 8 5 ' C
sl35
(76.711r^x.--l
T-
. 4 20 5 . r 3 )
t^t.
t
. 2 0 15 . o a )
rtt.
TtoTTox vtEw
J Lo.,t..r.tn",o
t4296
UUTRAtOW NOISE
TRUEINSTRUMENTATION
MEDICATISOIATIONAJT{PIIFIER
FEATURES
. UL Component
Recognized
r Ultra Low Noise
o Failureof any internalcomponentresultsin ( l0 sA
bias current
o ExcellentCMRR: 170dB; 160dB with 5 kQ source
imbalance
. ExternalSyncCapability
The Model 1,4296IsolationAmplifier featuresvery
high input/output isolationand very low noise.It can
operateat common mode input voltagesup to 5000VDC
c o n t i n u o u sC; M R R i s 1 7 0d B w i t h b a l a n c e ds o u r c ei m p e dance,and 160dB with 5 kQ sourceimbalance.Input voltage noiseis held to 0.3 prV,l0 Hz-l kHz rms, and current
n o i s et o 4 p A , 0 . 5 H z - l k H z r m s . I n p u r b i a sc u r r e n ti s
only 200 pA, and on the failure of any componentis limited to l0 prA.An independent+ l2 VDC, l0 mA supply
in the input sectionwith the samevoltageisolationas
the amplifier input, is usedto power optional external
circuitry.
BLOCK DIAGRAM
1A296
CHARACTERISTICS
(Typicaf @ 25 'C, Vr = + 15 VDC unlessotherwisenoted.)
GAIN (NON-INVERTING)
ACCURACY
vs. Temperature
Non-Linearity
Differential lnput Impedance
Common-Mode Input lmpedance
INPUT VOLTAGE
M a x . S a f e D i f f e r e n t i a lI n p u t
Pulse, l0 ms Duration
Max. Safe Common Mode Inpur (DC conr.)
INPUT BIAS CURRENT
vs.Temperature
SAFETYCURRENTLIMITS
INPUT NOISE (5 K unbalance)
Voltage .05 to 100Hz, pp
Voltage l0 Hz to I kHz, rms
Current.05Hz to I kHz, rms
COMMON MODE REIECTION
l n p u t t o O u t p u t , C M V = I 1 5V A C , 6 0 H z
BalancedSource lmpedance
5kQ Source Imbalance
Input to Reference,CMV = lOV p-p, 60 Hz
5 kQ Sourcelmbalance
OUTPUT
Range (50kQ Load)
Output Impedance
Max. CMV, Outputs to power common
Offset voltage referred to input
vs.Temperature
(0" to 70"C)
vs.Supply
ENCY RESPONSE*
I S i g n a l ,- 3 C B ,
FullPower,6Vpp
Overload Recovery
ISOLATED POWER OUTPUT
Voltage, + l0 mA load
Accuracy
Current
POWER SUPPLY, SINGLE POLARITY
Voltage Rated Performance
Current, Quiescent
TEMPERATURE RANGE
Rated Performance
Storage
tov/v
+ 2Vo
l:0.0l5o/o/'C
t0.l9o
3 x l0'Qll2.2nF
l 0 " a l ll 0 p F
+0.5 V min.
t30 V rms
+ 500 V oeak
+ 5000 VDC
+ 200 pA
+5 pAl"C
lOtA max.
l.5pV
0.3pV
4pA
1 7 0d B
1 6 0d b
1 2 0d B
+5V
lka
+ 30 V peak
+5 mV
t l00pV/'C
+20 pY/Vo
I kHz
500 Hz
20 msec
+ l2 VDC
+ l09o
+l0mA
+ 1 4 . 5t o + 1 6 V D C
+,10 mA
0"c to 70"c
- 25.C to + g5.C
*For l0kHz bandwidthspecifyP/N IA297 when consulting
facrory
fl
t!(q2t
l
t_