Hutton Close, Crowther Ind Est, Washington, Tyne & Wear NE38 0AH, England
Email: enquiry@isocomoptocouplers.com - Tel: +44 (0)191 4166546 - Fax: +44 (0)191 4155055
Hutton Close, Crowther Ind Est, Washington, Tyne & Wear NE38 0AH, England
Email: enquiry@isocomoptocouplers.com
- Tel: +44 (0)191 4166546 - Fax: +44 (0)191 4155055
Circuit
Features
Description
Absolute Maximum
Ratings
Recommended Operating Conditions
Electrical Characteristics
Switching
Characteristics
Similar
Optocouplers
Home Page
AC or DC Input
Logic Compatible Output
Thresholds Guaranteed over
Temperature
Hysteresis
Programmable Sense Voltage
3000 Vdc Withstand
Test Voltage
The ICPL3700 is a voltage/current threshold detection optocoupler. This optocoupler uses an internal light emitting diode, a threshold sensing input buffer IC, and a high gain photon detector to provide an optocoupler which permits adjustable external threshold levels. The input buffer circuit has a nominal turn-on threshold of 2.5 mA (Ith+) and 3.8 V (Vth+). The addition of one or more external attenuation resistors permits the use of this device over a wide range of input voltages and currents. Threshold sensing prior to the LED and detector elements minimises effects of different optical gain and LED variations over operating life (CTR degradation). Hysteresis is also provided in the buffer for extra noise immunity and switching stability. Surface Mount Option Available.
Absolute Maximum Ratings | |
| Storage Temperature: Operating Temperature: Lead Soldering: |
-55°C to +125°C -25°C to +85°C 260°C for 10s, 1.6mm below seating plane |
Input | |
| Average Current IIN: Surge Current IIN: Peak Transient Current IIN: Input Voltage VIN(Pins 2-3): PowerDissipation: Derate Linearly: |
50mA (note 1) 140mA (note 1,2) 500mA (note 1,2) -0.5V 230mW (note 3) 4.1mW/°C above 70°C free-air |
Output Detector | |
| Average Current IO: Derate Linearly: Output Voltage VO(Pins 6-5): Supply Voltage VCC(Pins 8-5): PowerDissipation: Derate Linearly: |
30mA 0.6mW/°C above 70°C free-air -0.5to 20V -0.5V to 20V 210mW (note 4) 3.9mW/°C above 70°C free-air |
Package | |
| Power Dissipation: | 305mW (derate linearly 5.4mW/°C above 70°C free-air) |
| PARAMETER | SYMBOL | MIN | MAX | UNIT |
|---|---|---|---|---|
| Supply Voltage | VCC | 4.5 | 18 | V |
| Operating Temperature | TA | 0 | 70 | °C |
| Operating Frequency | f | 0 | 4 | kHz (note 5) |
Electrical Characteristics(Over recommended temperature Ta= 0°C to 70°C u.o.s.; all typical values at Vcc=5V, Ta=25°C u.o.s.) | |||||||
| SYMBOL | PARAMETER | CONDITIONS | MIN | TYP | MAX | UNIT | NOTES |
|---|---|---|---|---|---|---|---|
| ITH+ | Input Threshold Current | VCC=4.5V, VIN=VTH+, VO=0.4V, IO>=4.2mA | 1.96 | 2.5 | 3.11 | mA | 9 |
| ITH- | VCC=4.5V, VIN=VTH-, VO=2.4V, IOH<=0.1mA | 1.00 | 1.3 | 1.62 | mA | ||
| VTH+ | Input Threshold Voltage DC (Pins 2,3) |
VCC=4.5V, VIN=V2-V3, Pins 1 & 4 Open, VO=0.4V, IO>=4.2mA | 3.35 | 3.8 | 4.05 | V | |
| VTH- | VCC=4.5V, VIN=V2-V3, Pins 1 & 4 Open, VO=2.4V, IO<=0.1mA | 2.01 | 2.6 | 2.86 | V | ||
| VTH+ | Input Threshold Voltage AC (Pins 1,4) |
VCC=4.5V, VIN=|V1-V4|, Pins 2 & 3 Open, VO=0.4V, IO>=4.2mA | 4.23 | 5.1 | 5.50 | V | 9,10 |
| VTH- | VCC=4.5V, VIN=|V1-V4|, Pins 2 & 3 Open, VO=2.4V, IO<=0.1mA | 2.87 | 3.8 | 4.24 | V | ||
| IHYS | Hysteresis | IHYS=ITH+-ITH- | 1.2 | mA | |||
| VHYS | VHYS=VTH+-VTH- | 1.2 | V | ||||
| VIHC1 | Input Clamp Voltage | VIHC1=V2-V3, V3=GND, IIN=10mA, Pin 1 & 4 connected to 3 | 5.4 | 6.0 | 6.6 | V | |
| VIHC2 | VIHC2=|V1-V4|, |IIN|=10mA, Pins 2 & 3 Open | 6.1 | 6.7 | 7.3 | V | ||
| VIHC3 | VIHC3=V2-V3, V3=GND, IIN=15mA, Pins 1 & 4 Open | 12.0 | 13.4 | V | |||
| VILC | VILC=V2-V3, V3=GND, IIN=-10mA | -0.76 | V | ||||
| IIN | Input Current | VIN=V2-V3=5.0V, Pin 1 & 4 Open | 3.0 | 3.7 | 4.4 | mA | |
| VD1,2 | Bridge Diode Forward Voltage | IIN=3mA | 0.59 | V | |||
| VD3,4 | 0.74 | V | |||||
| VOL | Logic Low Output Voltage | VCC=4.5V, IOL=4.2mA | 0.1 | 0.4 | V | 9 | |
| IOH | Logic High Output Current | VCC=VOH=18V | 0.1 | mA | 9 | ||
| ICCL | Logic Low Supply Current | VO=Open, VCC=V2-V3=5.0V | 1.0 | 4 | mA | ||
| ICCH | Logic High Supply Current | VO=Open, VCC=18V | 2 | nA | 9 | ||
| IIO | Input-Output Insulation Leakage Current | RH=45%, TA=25°C, t=5s, VIO=3000Vdc | 1 | µA | 11 | ||
| RIO | Input-Output Resistance | VIO=500Vdc | 1000 | Gohm | 11 | ||
| CIO | Input-Output Capacitance | f=1MHz, VIO=0 | 0.6 | pF | 11 | ||
| CIN | Input Capacitance | f=1MHz, VIN=0, Pins 2 & 3, Pins 1 & 4 Open | 50 | pF | |||
Switching Characteristics (Ta=25°C, Vcc=5V) | |||||||
| SYMBOL | PARAMETER | CONDITIONS | MIN | TYP | MAX | UNIT | NOTES |
| tPHL | Propagation Delay Time to Logic Low at Output | RL=4.7kohm, CL=30pF | 4.0 | 15 | µs | 6 | |
| tPLH | Propagation Delay Time to Logic High at Output | 10.0 | 40 | µs | 6 | ||
| tR | Output Rise (10-90%) | 20 | µs | ||||
| tF | Output Fall Time (90-10%) | 0.3 | µs | ||||
| CMH | Common Mode Transient Immunity at Logic High Level Output | RL=4.7kohm, VCMH=1400V, IIN=0mA, VO(MIN)=2.0V | 4000 | V/µs | 7,8 | ||
| CML | Common Mode Transient Immunity at Logic Low Level Output | RL=4.7kohm, VCML=140V, IIN=3.11mA, VO(MAX)=0.8V | -600 | V/µs | 7,8 | ||
1. Current into/out of any single lead
2. Surge input current duration
is 3ms at 120Hz pulse repetition rate. Transient input current duration is 10µs
at 120Hz pulse repetition rate. Maximum input power, Pin, must be observed.
3.
Maximum input power dissipation of 230mW allows an input IC junction temperature
of 125°C at an ambient temperature of Ta=70°C with a typical thermal
resistance from junction to ambient of Øjai=240°C/W. Excessive Pin
and Tj may result in IC chip degradation.
4. Maximum output power
dissipation of 210mW allows an output IC junction temperature of 125°C at
an ambient temperature of Ta=70°C with a typical thermal resistance from
junction to ambient of Øjao=265°C/W.
5. Maximum operating
frequency is defined when output waveform (Pin 6) obtains only 90% of Vcc with
Rl=4.7kohm, Cl=30pF using a 5V square wave input signal.
6. The tPHL (tPLH)
propagation delay is measured from the 2.5V level of the leading (trailing) edge
of a 5.0V input pulse, 1µs rise (fall) time, to the 1.5V level on the
leading (trailing) edge of the output pulse.
7. Common mode transient
immunity in Logic High (Low) Level is the maximum tolerable, positive
(negative), dVcm/dt on the leading (trailing) edge of the common mode pulse
signal, Vcm, to ensure that the output will remain in a Logic High (Low) state,
ie. Vo>2.0V (Vo<0.8V).
8. In applications where dVcm/dt may exceed
50000V/µs (such as static discharge), a series resistor Rcc should be
included to protect the detector IC from destructively high surge currents. The
recommended value for Rcc is 240ohm per volt of allowable drop in Vcc between
Pin 8 and Vcc with a minimum value of 240ohm.
9. Logic low output level at
Pin 6 occurs under the conditions of Vin>=Vth+ as well as the range Vin>Vth-
once Vin has exceeded Vth+. Logic high output level at Pin 6 occurs under the
conditions of Vin<=Vth- as well as the range of Vin<Vth+ once Vin has
decreased below Vth-.
10. AC voltage is instantaneous voltage.
11.
Device considered a two-terminal device: Pins 1,2,3,4 connected together, and
Pins 5,6,7,8 connected together.
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