2001 Fairchild Semiconductor Corporation
www.fairchildsemi.com
Rev. 1.0.0
Features
Low input bias current
High input impedance
Wide gain bandwidth: 4 MHz Typ.
High slew rate: 13 V/
s Typ.
Description
The KF347 is a high speed quad JFET input operational
amplifier. This feature high input impedance, wide
bandwidth, high slew rate, and low input offset voltage and
bias current. The KF347 may be used in circuits requiring
high input impedance. High slew rate and wide bandwidth,
low input bias current.
14-DIP
1
Internal Block Diagram
KF347
Quad Operational Amplifier (JFET)
KF347
2
Schematic Diagram
(One Section Only)
Absolute Maximum Ratings
Parameter
Symbol
Value
Unit
Supply Voltage
V
CC
18
V
Differential Input Voltage
V
I(DIFF)
30
V
Input Voltage Range
V
I
15
V
Output Short Circuit Duration
-
Continuous
-
Power Dissipation
P
D
570
mW
Operating Temperature Range
T
OPR
0 ~ + 70
C
Storage Temperature Range
T
STG
-65 ~ + 150
C
KF347
3
Electrical Characteristics
(V
CC
= +15V, V
EE
= -15V, T
A
=25
C, unless otherwise specified)
Note :
1. KF347: 0
T
A
+70
C
2. Guaranteed by design.
Parameter
Symbol
Conditions
KF347
Unit
Min. Typ.
Max.
Input Offset Voltage
V
IO
R
S
= 10K
-
5
10
mV
Note 1
-
-
13
Input Offset Voltage Drift(Note2)
V
IO
/
T
R
S
= 10K
-
10
-
V/
C
Input Offset Current
I
IO
-
25
100
pA
Note 1
-
-
4
nA
Input Bias Current
I
BIAS
-
50
200
pA
Note 1
-
-
8
nA
Large Signal Voltage Gain
G
V
R
L
= 2K
25
100
-
V/mA
V
O(P-P)
=
1
0V
Note 1
15
-
-
Output Voltage Swing
V
O(P_P)
R
L
= 10K
12
13.5
-
V
Input Voltage Range
V
I(R)
-
11
+15
-12
-
V
Common-Mode Rejection Ratio
CMRR
R
S
10K
80
100
-
dB
Power Supply Rejection Ratio
PSRR
R
S
10K
80
100
-
dB
Input Resistance
R
I
-
-
10
12
-
Supply Current
I
CC
-
-
7.2
11
mA
Slew Rate
SR
-
-
13
-
V/
S
Gain Bandwidth Product(Note2)
GBW
-
-
4
-
MHz
Channel Seperation
CS
f = 1Hz ~ 20Khz
(input referenced)
-
120
-
dB
Equivalent Input Noise
Voltage
e
N
R
S
= 100
f = 1KHz
-
20
-
nV/
Equivalent Input Noise
Current
I
N
f = 1KHz
-
0.01
-
pA/
Hz
Hz
PDF 
ZIP
