Isolation amplifiers provide signal and power isolation for data acquisition components to protect them from noises present at remote devices.

　 Also useful to:

• Amplify low-level signals in multi-channel applications
• Eliminate measurement errors by ground loops
• Reduce circuit costs

M-System offers a complete range of isolation amplifiers featuring:
・Input isolation (two-port)	・Output isolation (two-port)	・Three-port isolation	・Low-level mV signal input
・DC current output	・High isolation voltage	・Wide bandwidth	・High gain

20VS1A	20VS2-x	20VS2-0x	20VS3	20VS4-384

20VS5-100, 150, 140	20VS5-170	20VS5-200	20VS5-500	20VS8-210	20VF-x

2-port Isolation

■ Input Isolation

Model	Features	Input	Output	Response Time (0 – 90 %)	Freq. Characteristics	Power Input	Dimensions mm (inch)
20VF-1	Ultra-high speed response	-10 – +10V DC	-10 – +10V DC	≤ 80 μsec.	Approx. 5 kHz, -3 dB	15V DC	W49 × H14.5 × D18 (1.93” × 0.57” × 0.71”)
20VS2-1	Built in surge protectors	-10 – +10V DC	-10 – +10V DC	≤ 450 μsec.	Approx. 1 kHz, -3 dB	15V DC	W49 × H14.5 × D18 (1.93” × 0.57” × 0.71”)
20VS2-3	Narrow span	-10 – +100mV DC	0 – 10V DC	≤ 200 msec.	Approx. 2 Hz, -3 dB	15V DC	W49 × H14.5 × D18 (1.93” × 0.57” × 0.71”)
		0 – 5V DC		≤ 450 μsec.	Approx. 1 kHz, -3 dB
20VS4-384	Up to 5 kV input isolation	-5 – +5 V DC	-5 – +5 V DC	≤ 450 μsec.	1 kHz, -3 dB	15V DC	W38 × H15.2 × D38 (1.50” × 0.60” × 1.50”)
20VS5-150	• Small installation area in printed wiring board • Gain adjustable range, × 1 to × 100	@ 15 V power		≤ 90 μsec.	Approx. 5 kHz, -3 dB	15V DC	W53 × H24 × D18 (2.09” × 0.94” × 0.71”)
		-7 – +7 V DC	-7 – +7 V DC
		@ 11.5 V power
		-5 – +5 V DC	-5 – +5 V DC
20VS5-200	Ultra-high speed response	-5 – +5 V DC	-5 – +5 V DC	≤ 10 μsec.	Approx. 50 kHz, -3 dB	15V DC	W48 × H15 × D9.5 (1.89” × 0.59” × 0.37”)
20VS5-500	Up to 5 kV input isolation	-5 – +5 V DC	-5 – +5 V DC	≤ 90 μsec.	5 kHz, -3 dB TYP	15V DC	W38 × H15.2 × D38 (1.50” × 0.60” × 1.50”)

■ Output Isolation

Model	Features	Input	Output	Response Time (0 – 90 %)	Freq. Characteristics	Power Input	Dimensions mm (inch)
20VF-2	Ultra-high speed response	-10 – +10V DC	-10 – +10V DC	≤ 80 μsec.	Approx. 5 kHz, -3 dB	15V DC	W49 × H14.5 × D18 (1.93” × 0.57” × 0.71”)
20VS2-2	Built in surge protectors	-10 – +10V DC	-10 – +10V DC	≤ 450 μsec.	Approx. 1 kHz, -3 dB	15V DC	W49 × H14.5 × D18 (1.93” × 0.57” × 0.71”)
20VS2-4	Voltage and current output	0 – 5V DC	0 – 20mA DC	≤ 2 msec.	Approx. 200 Hz, -3 dB	15V DC	W49 × H14.5 × D18 (1.93” × 0.57” × 0.71”)
			0 – 10V DC
20VS5-140	Small installation area in printed wiring board	@ 15 V power		≤ 90 μsec.	Approx. 5 kHz, -3 dB	15V DC	W53 × H24 × D18 (2.09” × 0.94” × 0.71”)
		-7 – +7 V DC	-7 – +7 V DC
		@ 11.5 V power
		-5 – +5 V DC	-5 – +5 V DC
20VS5-170	Current output	0 – 5 V DC	0 – 20 mA DC	≤ 1 msec.	Approx. 500 Hz, -3 dB	12V DC	W44 × H10.5 × D18 (1.73” × 0.41” × 0.71”)

■ Bidirectional Isolation

Model	Features	Input	Output	Response Time (0 – 90 %)	Freq. Characteristics	Power Input	Dimensions mm (inch)
20VS5-100	• Small installation area in printed wiring board • Bidirectional amplifier	@ 15 V power		≤ 90 μsec.	Approx. 5 kHz, -3 dB	15V DC	W53 × H24 × D18 (2.09” × 0.94” × 0.71”)
		-7 – +7 V DC	-7 – +7 V DC
		@ 11.5 V power
		-5 – +5 V DC	-5 – +5 V DC

3-port Isolation

Model	Features	Input	Output	Response Time (0 – 90 %)	Freq. Characteristics	Power Input	Dimensions mm (inch)
20VS1A	High speed response	-10 – +10V DC	-10 – +10V DC	≤ 50 μsec.	Approx. 20 kHz, -3 dB	15V DC	W53.3 × H26 × D11.3 (2.1” × 1.02” × 0.44”)
20VS2-01	High-linearity	-5 – +5V DC	-5 – +5V DC	≤ 390 μsec.	Approx. 1 kHz, -3 dB	15V DC	W33 × H8 × D19 (1.30” × 0.31” × 0.75”)
20VS2-02	High-linearity	0 – 5V DC	0 – 5V DC	≤ 390 μsec.	Approx. 1 kHz, -3 dB	15V DC	W33 × H8 × D19 (1.30” × 0.31” × 0.75”)
20VS3	Saving installation space	-5 – +5V DC	-5 – +5V DC	≤ 450 μsec.	Approx. 1 kHz, -3 dB	15V DC	W33 × H19 × D8 (1.30” × 0.75” × 0.31”)
20VS8-210	High speed response	-10 – +10 V DC	-10 – +10V DC	≤ 50 μsec.	Approx. 20 kHz, -3 dB	15V DC	W53.3 × H9.8 × D25.4 (2.1” × 0.39” × 1”)