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| 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 GAIN (Non-inverting) Range Formula Deviation from Formula Vs. Temperature (0 to + 70C) Vs. Temperature (0 to + 70C) 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 5K Source Imbalance CMR, Inputs to Guard, 60Hz 5K Source Imbalance Max. Leakage Current, Inputs to Common 115VAC, 60Hz INPUT IMPEDANCE Differential Overload Common Mode INPUT BIAS CURRENT Initial, @ +25C Vs. Temperature (0 to + 70C) 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, @ +25C Vs. Temperature (0 to + 70C) Gain = 1 V/V (V/C max.) Gain = 100V/V (V/C max.) At other Gains (V/C max.) Vs. Supply Voltage RATED OUTPUT Voltage, 50K 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 + (30k/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 8A max. 108 || 3pF 27K 1011 || 20pF 2nA 0.01nA/C CHARACTERISTICS (Typical, @ 25C, Vs = +15 VDC unless otherwise noted.) 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 1V, 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. 3V p-p 1V rms. 1pA p-p 1kHz 500HZ 30mV/S (1 + 5/G) mV 35 15 (15 + 20/G) (1 + 20/G), V/V 10V min. 10mV P-P 1.0k 50V pk. 14VDC 5% 15mA min. +0, -2% 0.005% 100V 5V +15VDC, 0.5V +12 to + 18VDC 70mA 100mA 7 - 8KHz, 5VDC @ 50% duty cycle 0C to +70C -55C to +85C 3.5" x 2.5" x .62" S132 1.3 ounces BLOCK DIAGRAM IA175 HI IN GAIN ADJ INNER INPUT SHIELD OUTER INPUT SHIELD FULL-WAVE MODULATOR MODULATOR DRIVE DC-DC CONVERTER OUTPUT SHIELD FULL-WAVE DEMODULATOR DEMODULATOR DRIVE OSCILLATOR FILTER HI OUT LO OUT SHIELD GUARD LO IN +VsOUT -VsOUT +Vs COM SYNC 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 4 - 40 N/C HI OUT 11 HI IN 2 PLACES GAIN ADJ LO OUT 10 SHIELD SYNC 9 GUARD 12 +Vs LO IN -Vs N.C. (GAIN ADJ OPT) .63 (16.0) MAX. 3.53 (89.66) MAX. MODEL IA175 .04 (1.02) DIA. COM OUT +15 8 7 .20 (5.06) MIN. BOTTOM VIEW |
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