ES-4434 Rev.1
20VS5-251
Hybrid IC Isolation Amplifiers 20 Series
ISOLATION AMPLIFIER
(high-accuracy, input isolation)
Functions & Features
• Being used for printed wiring board installation
• Up to 1000 V isolation between input to output 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: 20VS5－251–U
ORDERING INFORMATION
• Code number: 20VS5-251-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
: Input or reference voltage source to output 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
(input or reference voltage source to output 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
(R
1
+ R
2
) ≤ 200 kΩ