ES-4404 Rev.5
20VS3
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
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)
CMRR
: ≥ 100 dB (500 V AC 50/60 Hz)
EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm [inch]
SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM
APPLICATION EXAMPLE
The total resistance of the resistors connected to the amplifier must be max. 100 kΩ.