參數(shù)資料
型號: FOD2741BTV
廠商: FAIRCHILD SEMICONDUCTOR CORP
元件分類: 光電耦合器
英文描述: OPTICALLY ISOLATED ERROR AMPLIFIER
中文描述: 1 CHANNEL TRANSISTOR OUTPUT OPTOCOUPLER
封裝: DIP-8
文件頁數(shù): 3/15頁
文件大?。?/td> 189K
代理商: FOD2741BTV
12/9/04
Page 3 of 15
2003 Fairchild Semiconductor Corporation
OPTICALLY ISOLATED
ERROR AMPLIFIER
FOD2741A
FOD2741B
FOD2741C
1. The deviation parameters V
obtained over the rated temperature range. The average full-range temperature coef
fi
cient of the reference input voltage,
is de
fi
ned as:
10
6
×
A
REF(DEV)
and I
REF(DEV)
are de
fi
ned as the differences between the maximum and minimum values
V
REF
,
where
T
A
is the rated operating free-air temperature range of the device.
2. The dynamic impedance is de
fi
ned as |Z
Figure 2), the total dynamic impedance of the circuit is given by:
OUT
| =
V
COMP
/
I
LED
. When the device is operating with two external resistors (see
ELECTRICAL CHARACTERISTICS
(T
A
= 25
°
C Unless otherwise speci
fi
ed.)
INPUT CHARACTERISTICS
Parameter
Test Conditions
Symbol
Device
Min.
Typ.
Max.
Unit
LED Forward Voltage
(I
LED
= 10 mA, V
COMP
= V
FB
) (
fi
g.1)
V
F
ALL
1.5
V
Reference Voltage
I
LED
= 10 mA, V
COMP
= V
FB
V
REF
A
2.482
2.495
2.508
V
B
2.470
2.495
2.520
V
C
2.450
2.500
2.550
V
Deviation of V
temperature
REF
over
T
A
= -25
°
C to +85
°
C
V
REF (DEV)
ALL
4.5
17
mV
Ratio of V
output of the error ampli
fi
er
REF
variation to the
I
LED
= 10 mA
V
COMP
V
COMP
= 10V to V
REF
V
V
REF
/
COMP
ALL
-1.0
-2.7
mV/
V
= 36V to 10V
-0.5
-2.0
Feedback Input Current
I
LED
= 10mA, R
1
= 10k
(
fi
g 3)
I
REF
ALL
1.5
4
μA
Deviation of I
temperature
REF
over
T
A
= -25
°
C to +85
°
C
I
REF (DEV)
ALL
0.4
1.2
μA
Minimum Drive Current
V
COMP
= V
FB
(
fi
g.1)
I
LED (MIN)
I
(OFF)
ALL
0.45
1.0
mA
Off-state error ampli
fi
er current
V
LED
= 37V, V
FB
= 0 (
fi
g 4.)
ALL
0.05
1.0
μA
Error ampli
fi
er output impedance
(see note 2)
V
COMP
= V
REF
, I
LED
= 1mA to 20mA,
f
1.0 kHz
|Z
OUT
|
ALL
0.15
0.5
V
REF
ppm/
°
C
(
)
V
------------------------------------------------T
/V
T
A
25
°
C
=
(
)
{
}
=
Z
OUT, TOT
=
V
I
-------
Z
OUT
1
R2
+
×
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