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20VS1A-4W4WB-U

Hybrid IC Isolation Amplifiers 20 Series

Unspecified 

Hybrid IC Isolation Amplifiers 20 Series

ISOLATION AMPLIFIER

(high speed response, 3-port isolation)

Functions & Features

• Being used for printed wiring board installation

• High-linearity

• High speed response 50 μsec.

• Isolating between input, output and power

• Isolation between input, output and power supply up to

3000 V AC

• Power 15 V DC

Typical Applications

• Isolating the field and input circuit of microprocessor

to reduce noise from field

• Available for manufacturers of small-lot products

to omit the development of isolation circuit

MODEL: 20VS1A–4W4W[1]–U

ORDERING INFORMATION

• Code number: 20VS1A-4W4W[1]-U

Specify a code from below for [1]

(e.g. 20VS1A-4W4WA-U)

INPUT / OUTPUT

4W4W: -10 - +10 V DC (Input resistance 1 MΩ min.)

/ -10 - +10 V DC (Load resistance 2 kΩ min.)

[1] LINEARITY

A: ±0.025 %

B: ±0.012 %

C: ±0.008 %

POWER INPUT

DC Power

U: 15 V DC

GENERAL SPECIFICATIONS

Construction: Hybrid IC

Housing material: Flame-resistant resin (black)

MODEL: 20VS1A

Isolation: Input to output to power

INPUT SPECIFICATIONS

■ DC Voltage

Input : -10 – +10 V DC

Input resistance: 1 MΩ (10 kΩ in power failure)

Overload input voltage: ±15 V DC continuous

Input offset voltage: ±2 mV @ G = 1

Input bias current: 25 pA TYP. (@25°C)

OUTPUT SPECIFICATIONS

■ DC Voltage: -10 – +10 V DC

Load resistance: ≥ 2 kΩ

Output impedance: ≤ 1 Ω

REFERENCE VOLTAGE SOURCE

■ FOR INPUT

Output voltage: ±16.5 V DC ±2.5 V (when power supply is

15 V DC)

Load current: ≤ 2 mA

■ FOR OUTPUT

Output voltage: ±16.5 V DC ±2.5 V (when power supply is

15 V DC)

Load current: ≤ 2 mA

INSTALLATION

Power input

•DC: Rating ±5 %; approx. 50 mA with no load

Operating temperature: -25 to +85°C (-13 to +185°F)

Operating humidity: 30 to 90 %RH (non-condensing)

Mounting: Soldering to the printed wiring board

Weight: 20 g (0.71 oz)

PERFORMANCE in percentage of span

Unless otherwise specified, G = 1.

Linearity:

±0.025 % (20VS1A-4W4WA)

±0.012 % (20VS1A-4W4WB)

±0.008 % (20VS1A-4W4WC)

Temp. coefficient:

±25 ppm/°C (0℃ - 70℃; 32 - 158°F)

±50 ppm/°C (-25℃ - +85℃; -13 - +185°F)

Frequency characteristics: Approx. 20 kHz, -3 dB

Response time: ≤ 50 μsec. (0 – 90 %)

Conversion gain: ×1 ±1.5 %

Gain adjustable range: × 1 to × 100

Line voltage effect: ±0.01 % over voltage range

Insulation resistance: ≥ 100 MΩ with 500 V DC

Dielectric strength: 3000 V AC @1 minute (input or

reference voltage source for input to output or reference

http://www.m-system.co.jp/

20VS1A SPECIFICATIONS

ES-4421 Rev.0 Page 1/5

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