FEATURES
·
UL Component Recognized
·
Ultra Low Noise
·
Failure of Any Internal Component Results in <10
µ
A Bias
Current
·
Excellent CMRR: 170 dB; 160 dB with 5K
Source
Imbalance
·
External Sync Capability
BLOCK DIAGRAM IA296
The Model IA296 Isolation Amplifier features very high input /
output isolation and very low noise. It can operate at common mode
input voltages up to 5000 VDC continuous; CMRR is 170 dB with
balanced source impedance, and 160 dB with 5K
source imbalance.
Input voltage noise is held to 0.3
µ
V, 10Hz 1kHz rms. and current
noise to 4pA, 0.5Hz 1kHz rms. Input bias current is only 200pA, and
on the failure of any component is limited to 10
µ
A. An independent
±
12VDC, 10mA supply in the input section with the same voltage
isolation as the amplifier, is used to power optional external circuitry.
CHARACTERISTICS
(Typical, @ 25
°
C, Vs = +15 VDC unless otherwise noted.)
GAIN (Non-inverting)
10V / V
ACCURACY
±
2%
Vs. Temperature
±. 015%/
°
C
Nonlinearity
±
0.1%
Differential Input Impedance
3 X 10
8
|| 2.2nF
Common Mode Input Impedance
3 X 10
10
|| 10pF
INPUT VOLTAGE
±
0.5V min.
Max. Safe Differential Input
±
30V rms.
Pulse, 10ms Duration
±500V peak
Max. Safe Common Mode Input (DC cont.)
±5000VDC
INPUT BIAS CURRENT
±200pA
Vs. Temperature (0 to + 70
°
C)
±5pA/
°
C
SAFETY CURRENT LIMITS
10
µ
A max.
INPUT NOISE (5K Unbalance)
Voltage .05Hz to 100Hz, pp
1.5
µ
V
Voltage 10Hz to 1kHz, rms.
0.3
µ
V
Current .05Hz to 1kHz, rms.
4pA
COMMON MODE REJECTION
Input to Output, CMV = 115 VAC, 60Hz
Balanced Source Impedance
170 dB
5K
Source Imbalance
160 dB
Input to Reference
CMV = 10V p-p, 60Hz
5K
Source Imbalance
120 dB
OUTPUT
Range (50K
Load)
±5V
Output Impedance
1 K
Max. CMV, Outputs to Power Common
± 30 V peak
Offset Voltage Referred to Input
± 5mV
Vs. Temperature (0
°
to 70
°
C)
± 100
µ
V /
°
C
Vs. Supply Voltage
± 20
µ
V / %
FREQUENCY RESPONSE
Small Signal, - 3 dB
1kHz
Full Power, 6V pp
500Hz
Overload Recovery
20mS
ISOLATED POWER OUTPUTS
Voltage, ±10mA Load
±12VDC
Accuracy
±10%
Current
± 10mA
NOMINAL WEIGHT
8 Ounces
POWER SUPPLY, SINGLRE POLARITY
Voltage, Rated Performance
±14.5 to +16 VDC
Current, Quiescent
+ 40 mA
TEMPERATURE RANGE
Rated Performance
0
°
C to +70
°
C
Storage
-25
°
C to +85
°
C
MATING SOCKET
S132
IA296
ULTRA LOW NOISE
TRUE INSTRUMENTATION
MEDICAL ISOLATION AMPLIFER
+IN
-IN
IN REF
+Vs
Vs COM
-Vs
4 - 40 N/C
2 PLACES
SEE NOTE
NOTE:
INSERT to Vs COM 300 VRMS MAX.
HI OUT
LO OUT
COM
+15
6
5
4
3
2
1
11
10
8
7
9
SYNC
2.53 (64.2)
MAX.
BOTTOM VIEW
3.53 (89.66)
MAX.
.63 (16.0)
MAX.
.20 (5.08)
MIN.
.04 (1.02)
DIA.
MODEL IA296
For 10kHz bandwidth specify P/N IA297 when consulting factory.
Full Wave
Modulator
Current
Limiter
Guard
Drive
Ac
ti
ve Pr
ot
ect
i
on
Ci
rc
ui
tr
y
Modulator
Driver
DC-DC
Converter
Demod-
ulator
Filter
Demodulator
Driver
Oscillator
+
+
-
-
-
-
+
+
+IN
-IN
IN REF
+Vs
COMMON
-Vs
SYNC
HI OUT
LO OUT
+Vs
COMMON
Shield Guard
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