1A175 Datasheet, PDF (1/1 Pages) List of Unclassifed Manufacturers – IA175 ULTR-LINEAR ISOLATION AMPLIFIER

IA175 ULTR-LINEAR
ISOLATION AMPLIFIER WITH
EXTERNAL SYNC CAPABILITY
Fully compatible with 12-Bit Acquisition Systems
FEATURES
• UL Component Recognized
• Provision for External Synchronization
• High Linearity: 0.0050% Peak, Typical
• High Input/output Isolation: 5000VDC continuous,
3000VAC RMS
• 1000:1 Programmable Gain
• Low Drift: ± 0.01% / °C Maximum
• 126dB Common-Mode Rejection
The Model IA175 Isolation Amplifier features very high
linearity, input/output isolation, and common-mode rejection,
very low drift, and externally programmable gain. Its 0.005%
linearity assures compatibility with 12-bit data acquisition
systems, and its ability to operate at common-mode input
voltages up to 5000VDC enables operation with single
sources in high voltage systems and other hazardous
locations. Common-mode rejection is at least 120dB with
source imbalance of up to 5000 ohms. Input voltage noise is
1µV, 10HZ to 1kHz, and current noise is 10pA for the same
range. The gain of the amplifier is programmable from 1V/V to
1000V/V by means of an externally connected resistance
value. The internal oscillator used to provide modulation and
demodulation for input isolation can be synchronized with
those of associated Model IA175 amplifiers by means of an
external trigger, to avoid imposition of beat-frequency
phenomena on the output signals. An independent ±14VDC,
± 5mA supply in the input section, with the same voltage
isolation as the amplifier input, is used to power an external
transducer, or preamplifier.
BLOCK DIAGRAM IA175
HI IN
GAIN
ADJ
SHIELD
GUARD
LO IN
+VsOUT
-VsOUT
INNER
INPUT
SHIELD
OUTER INPUT
SHIELD
FULL-WAVE
MODU-
LATOR
MODU-
LATOR
DRIVE
DC-DC
CONVERTER
OUTPUT SHIELD
FULL-WAVE
DEMODU-
LATOR
FILTER
DEMODU-
LATOR
DRIVE
OSCIL-
LATOR
SYNC
HI OUT
LO OUT
+Vs
COM
CONNECTION NOTES:
1. Gain adjustment resistor (Rg) is connected between GAIN and LO-IN
pins.
2. If no output-offset adjustment is required, connect LO-OUT to
COMMON pin. Otherwise, consult factory.
6
5
2.53 (64.2)
MAX.
4
3
2
1
HI IN
4 - 40 N/C
2 PLACES
HI OUT
11
GAIN ADJ
LO OUT 10
SHIELD
GUARD
SYNC 9
12 N.C.
+Vs
(GAIN
ADJ
LO IN OPT)
-Vs
COM 8
OUT
+15 7
BOTTOM VIEW
.63 (16.0)
MAX.
3.53 (89.66)
MAX.
MODEL IA175
.20 (5.06)
MIN.
.04 (1.02)
DIA.
CHARACTERISTICS
(Typical, @ 25°C, Vs = +15 VDC unless otherwise noted.)
GAIN (Non-inverting)
Range
Formula
Deviation from Formula
Vs. Temperature (0 to + 70°C)
Vs. Temperature (0 to + 70°C)
Nonlinearity, ±5V Output
Nonlinearity, ±10V Output
INPUT VOLTAGE RATINGS
Linear Differential Range
Max. Safe Differential Input rms.
Continuous
Peak Pulse, 5ms Duration, 1 Pulse/Sec
Max. CMV, Inputs to Outputs/Power Common
Peak AC, 60HZ, 1 Minute
Peak DC Continuous
CMR, Inputs to Outputs, 60Hz
Balanced Source Impedance
5KΩ Source Imbalance
CMR, Inputs to Guard, 60Hz
5KΩ Source Imbalance
Max. Leakage Current, Inputs to Common
115VAC, 60Hz
INPUT IMPEDANCE
Differential
Overload
Common Mode
INPUT BIAS CURRENT
Initial, @ +25°C
Vs. Temperature (0 to + 70°C)
INPUT NOISE
Voltage
0.01Hz to 10Hz
10Hz to 1kHz
Current
0.01Hz to 10Hz
FREQUENCY RESPONSE
Small Signal, -3dB Gain = 100V/V
Full Power, 20V p-p Output
Slew Rate
OFFSET VOLTAGE, REFERRED TO INPUT
Initial, @ +25°C
Vs. Temperature (0 to + 70°C)
Gain = 1 V/V (µV/°C max.)
Gain = 100V/V (µV/°C max.)
At other Gains (µV/°C max.)
Vs. Supply Voltage
RATED OUTPUT
Voltage, 50KΩ Load
Output Ripple, 20kHz
Output Impedance
Max. CMV, Output Common to Power Common
Peak AC or DC Continuous
ISOLATED POWER CIRCUIT
Voltage, ±15mA Load
Accuracy
Current
Regulation
No Load to Full Load
∆ GAIN
∆ Output Offset
∆ Input Offset
POWER SUPPLY, SINGLE POLARITY
Voltage, for Rated Performance
Voltage, Operating
Current, Quiescent
Current, Full Load
External Sync. Frequency
TEMPERATURE RANGE
Rated Performance
Storage
CASE DIMENSIONS
MATING SOCKET
NOMINAL WEIGHT
1 to 1000V/V
1 + (30kΩ/Rg)
±1%
±0.005%/°C
±0.01%/°C max.
±0.01% max
±0.02% max.
±10V min.
125V rms.
±600V
3,000V
±5,000V
126dB
120dB
80dB
8µA max.
10⁸Ω || 3pF
27KΩ
10¹¹â„¦ || 20pF
±2nA
±0.01nA/°C
3µV p-p
1µV rms.
1pA p-p
1kHz
500HZ
30mV/µS
±(1 + 5/G) mV
±35
±15
±(15 + 20/G)
±(1 + 20/G), µV/V
±10V min.
10mV P-P
1.0kΩ
±50V pk.
±14VDC
±5%
±15mA min.
+0, -2%
±0.005%
±100µV
±5µV
+15VDC, ±0.5V
+12 to + 18VDC
70mA
100mA
7 – 8KHz, 5VDC @
50% duty cycle
0°C to +70°C
-55°C to +85°C
3.5” x 2.5” x .62”
S132
1.3 ounces