MODEL: 20VS3

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

20VS3 SPECIFICATIONS

ES-4404 Rev.4 Page 1/5

Hybrid IC Isolation Amplifiers 20 Series

ISOLATION AMPLIFIER

(3-port isolation)

Functions & Features

• Being used for printed wiring board installation

• Isolating between input, output and power

• Isolation between input, output and power supply up to

1500 V AC

• High-linearity

• Low power consumption

• Saving installation space

• Power 15 V DC

Typical Applications

• Isolating the field and input or output circuit of

microprocessor to reduce noise from field

• Available for manufacturers of small-lot products to omit

the development of isolation circuit

mm (inch)

19

(.75)

8 (.31)

33 (1.30)

MODEL: 20VS3

ORDERING INFORMATION

• Code number: 20VS3–U

Input range ±5 V DC

Output range ±5 V DC

• Code number: 20VS3–5W4W–U

Input range ±5 V DC

Output range ±10 V DC

• Code number: 20VS3–4W4W–U

Input range ±10 V DC

Output range ±10 V DC

POWER INPUT

DC Power

U: 15 V DC

GENERAL SPECIFICATIONS

Construction: Hybrid IC

Housing material: Epoxy resin

Isolation: Input or reference voltage source to output to

power supply

INPUT SPECIFICATIONS

■ DC Voltage

• Input : -5 – +5 V DC

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

• Input : -10 – +10 V DC

Input resistance: ≥ 350 kΩ (10 kΩ in power failure)

Overload input voltage: 30 V DC continuous

Input offset voltage: ±15 mV

Input bias current: 2 nA TYP. (@25°C)

OUTPUT SPECIFICATIONS

■ DC Voltage:

• -5 – +5 V DC

Load resistance: ≥ 2 kΩ

• -10 – +10 V DC

Load resistance: ≥ 4 kΩ

Output impedance: ≤ 1 Ω

REFERENCE VOLTAGE SOURCE

Output voltage: ±7.1 V DC ±10 %

Load current: ≤ 2 mA

INSTALLATION

Power input

•DC: Operational voltage range:

Rating ±5 %; approx. 7 mA with no load;

ripple 2 % p-p max.

Operating temperature: -10 to +70°C (14 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.

(G = 2 for 20VS3-5W4W; G = -2 for inverting amplifier

circuit of 20VS3-4W4W)

Linearity: ±0.001 % TYP. (±0.05 % max.)

Temp. coefficient:

Offset drift 5 ppm/°C TYP. (20 ppm/°C max.)

Span drift 10 ppm/°C TYP. (50 ppm/°C max.)

Frequency characteristics: Approx. 1 kHz, -3 dB

Response time: ≤ 450 μsec. (0 – 90 %)

Conversion gain: ×1 ±1 % (×2 ±1 % for 20VS3-5W4W)

Line voltage effect: ±0.05 % over voltage range

Insulation resistance: ≥ 100 MΩ with 500 V DC

Dielectric strength: 1500 V AC @1 minute (input or

reference voltage source to output to power)