Datasheet

8/11
Photocouplers
LTV-357T
Part N.: LTV-357T
BNC-OD-FC002/A4
tr
tf
td
ts
Fig.8 C ollector-em itter Saturation Voltage
Fig.9 C ollector D ark C urrent vs.
Am bient Tem perature
Fig.10 R esponse Tim e vs. Load
Fig.11 Frequency R esponse
CE
vs. A m bient Tem perature
Am b ient tem perature Ta ( C)
Am b ient tem perature Ta ( C)
Frequency f (kHz)
Response tim e ( s)
Voltag e g ain Av (d B)
Collector-em itter saturation voltage
V (sat) (V)
o
o
o
o
0.2
0.0520 40 60 80 100 0.1 0.2 0.5 1 2 5 10
0.5
1
2
5
10
20
50
100
200
500
0.5
20
10
0
2 10 100 500
Resistance
Fig.7 R elative C urrent Transfer R atio
vs. A m bient Tem perature
1 5 20 50
Test C ircuit for R esponse T im e
Test C ircuit for Frequency Response
Input
Input
Vcc
ts
Output
Output
tr
Output
Vcc
td
tf
10%
90%
Load resistance RL (k )
Collector d ark current ICEO (nA)
VCE= 20V
VCE= 2V
IC= 2m A
Ta= 25 C
RD
RL
RD
RL
RL= 10k
1k
100
VCE= 2V
IC= 2m A
Ta= 25 C
1
10
10000
1000
100
Am b ient tem perature Ta ( C)
o
Relative current transfer ratio (%)
0
20 40 60 80 100
50
100
150
IF= 1m A, VCE= 5V
120
IF= 20m A
IC= 1m A
0
20 40 80 100
0.02
0.04
0.06
0.08
0.10
60 120
120