Data Sheet

©2004 Fairchild Semiconductor Corporation www.fairchildsemi.com
FOD2741A, FOD2741B, FOD2741C Rev. 1.0.1 5
FOD2741A, FOD2741B, FOD2741C — Optically Isolated Error Amplifier
Electrical Characteristics
(Continued) (T
A
= 25°C unless otherwise specified)
Isolation Characteristics
Switching Characteristics
Notes:
6. Device is considered as a two terminal device: Pins 1, 2, 3 and 4 are shorted together and Pins 5, 6, 7 and 8 are
shorted together.
7. Common mode transient immunity at output high is the maximum tolerable (positive) dVcm/dt on the leading edge
of the common mode impulse signal, Vcm, to assure that the output will remain high. Common mode transient
immunity at output low is the maximum tolerable (negative) dVcm/dt on the trailing edge of the common pulse
signal,Vcm, to assure that the output will remain low.
Symbol Parameter Test Conditions Min. Typ. Max. Unit
I
I-O
Input-Output Insulation
Leakage Current
RH = 45%, T
A
= 25°C, t = 5s,
V
I-O
= 3000 VDC
(6)
1.0 µA
V
ISO
Withstand Insulation
Voltage
RH ≤ 50%, T
A
= 25°C, t = 1 min.
(6)
5000 Vrms
R
I-O
Resistance (Input to Output) V
I-O
= 500 VDC
(6)
10
12
Ω
Symbol Parameter Test Conditions Min. Typ. Max. Unit
BW Bandwidth (Fig. 7) 50 kHZ
CMH Common Mode Transient
Immunity at Output HIGH
I
LED
= 0mA, Vcm = 10 V
PP
,
R
L
= 2.2kΩ
(7)
(Fig. 8)
1.0 kV/µs
CML Common Mode Transient
Immunity at Output LOW
(I
LED
= 1mA, Vcm = 10 V
PP,
R
L
= 2.2kΩ
(7)
(Fig. 8)
1.0 kV/µs