ES-4445 Rev.2
20VS5-301
Hybrid IC Isolation Amplifiers 20 Series
ISOLATION AMPLIFIER
(current output, 3-port isolation)
Functions & Features
• Being used for printed wiring board installation
• High-linearity
• Low power consumption
• Small installation area in printed wiring board
• Isolating between input, output and power
• Isolation between input, output and power supply
up to 1500V AC
• 12 V DC power supply
• Current output
Typical Applications
• Isolating the fiels and output circuit of microprocessor to reduce common mode noise
• Available for manufacturers of small-lot products to omit the development of isolation circuit
MODEL: 20VS5-301-S
ORDERING INFORMATION
• Code number: 20VS5-301-S
INPUT RANGE 0 – 5 V DC
OUTPUT RANGE 0 – 20 mA DC
POWER INPUT
DC Power
S
: 12 V DC
GENERAL SPECIFICATIONS
Construction
: Hybrid IC
PWB coating
: Silicone
Isolation
: Input or reference voltage source to output to power supply
INPUT SPECIFICATIONS
■
DC Voltage
Input
: 0 – 5.5 V DC
Input resistance
: 20 kΩ with 20 kΩ externally attached
(Gain varies depending on the input resistance. For details, refer to APPLICATION EXAMPLE.)
Overload input voltage
: 10 V DC continuous
Input offset voltage
: ±30 mV
Input bias current
: 2 nA TYP. (@25°C) (which is the internal amplifier's value (not measurable from the outside))
OUTPUT SPECIFICATIONS
■
DC Current
: 0 – 22 mA DC
Load resistance
: ≤ 550 Ω @ 12 V power input and 20 mA output
Output impedance
: ≥ 1 MΩ
REFERENCE VOLTAGE SOURCE
Output voltage
: ±10 V DC ±10 %
Load current
: ≤ 5 mA
INSTALLATION
Power input
•
DC
: Operational voltage range: Rating ±10 %,
ripple 2 %p-p max.; ≤ 70 mA with 20 mA output
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
: 20 g (0.71 oz)
PERFORMANCE in percentage of span
Linearity
: ±0.05 % (at output 0 - 20 mA) @G = 1
Temp. coefficient
: ±80 ppm/°C
Frequency characteristics
: Approx. 950 Hz (-3 dB)
Response time
: ≤ 600 μsec. (0 – 90 %)
Conversion gain
: ×1 ±10 % @ 250 Ω load
Gain adjustable range
: G = × 1 to × 10
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
I
0
= 20 KΩ/(R
1
+VR
1
) x (Vin/120 Ω)
R
2
: approx. 2 MΩ, VR
2
: 50 kΩ
R
1
+VR
1
= 41.6 kΩ; 20 mA output with 5 V input
R
1
+VR
1
= 20.8 kΩ; 20 mA output with 2.5 V input
R
1
's and R
2
's resistance temperature coefficients: ±20 - ±50 ppm/℃ with tolerance of ±1%
VR
1
's and VR
2
's resistance temperature coefficients: ±100 ppm/℃