ES-4437 Rev.1

20VS5-252

Hybrid IC Isolation Amplifiers 20 Series

ISOLATION AMPLIFIER

(high-accuracy, output isolation)
Functions & Features
• Being used for printed wiring board installation
• Up to 1000 V isolation between output to input or power input
• High-linearity
• Small installation area in printed wiring board
• Gain adjustable range, × 1 to × 10
• Power 15 V DC
Typical Applications
• Galvanically isolating the I/O circuits of microprocessor from the field side to reduce external noise
• Enabling electronic manufacturers to save efforts and cost for the development of isolation circuits for small-lot products

MODEL: 20VS5-252–U

ORDERING INFORMATION

• Code number: 20VS5-252-U
INPUT RANGE -10 – +10 V DC
OUTPUT RANGE -10 – +10 V DC

POWER INPUT

DC Power
U: 15 V DC

GENERAL SPECIFICATIONS

Construction: Hybrid IC
Isolation: Output or reference voltage source to input or power supply

INPUT SPECIFICATIONS

■ DC Voltage
Input : -10 – +10 V DC
Input resistance: ≥ 1 MΩ (≥ 10 kΩ in power failure)
Overload input voltage: 30 V DC continuous
Input offset voltage: ±15 mV
Input bias current: 0.5 nA TYP. (@25°C)

OUTPUT SPECIFICATIONS

■ DC Voltage: -10 – +10 V DC
Load resistance: ≥ 5 kΩ
Output impedance: ≤ 1 Ω

REFERENCE VOLTAGE SOURCE

Output voltage: ±15 V DC TYP.
Load current: ≤ 1 mA

INSTALLATION

Power input
•DC: Operational voltage range: Rating ±5 %, ripple 2 %p-p max.; ≤ 12 mA with no load
Operating temperature: 0 to 70°C (32 to 158°F)
Operating humidity: 30 to 90 %RH (non-condensing)
Mounting: Soldering to the printed wiring board
Weight: 10 g (0.35 oz)

PERFORMANCE in percentage of span

Unless otherwise specified, G = 1.
Linearity: ±0.05 %
Temp. coefficient: 50 ppm/°C (28 ppm/°F)
Frequency characteristics: Approx. 3 kHz, -3 dB
Response time: ≤ 150 μsec. (0 – 90 %)
Conversion gain: ×0.98 ±2 %
Gain adjustable range: × 1 to × 10
Line voltage effect: ±0.05 % over voltage range
Insulation resistance: ≥ 100 MΩ with 500 V DC
Dielectric strength: 1000 V AC @ 1 minute
(output or reference voltage source to input
or power supply)
CMRR: ≥ 100 dB (500 V AC 50/60 Hz)

EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm [inch]

SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM

APPLICATION EXAMPLE

10 kΩ ≤ (R₁ + R₂) ≤ 200 kΩ