1/10
LOW POWER CONSUMPTION
WIDE COMMON-MODE (UP TO V
CC
+
) AND
DIFFERENTIAL VOLTAGE RANGE
LOW INPUT BIAS AND OFFSET CURRENT
OUTPUT SHORT-CIRCUIT PROTECTION
HIGH INPUT IMPEDANCE J–FET INPUT
STAGE
INTERNAL FREQUENCY COMPENSATION
LATCH UP FREE OPERATION
HIGH SLEW RATE : 16V/µs (typ)
DESCRIPTION
These circuits are high speed J–FET input quad
operational amplifiers incorporating well matched,
high voltage J–FET and bipolar transistors in a
monolithic integrated circuit.
The devices feature high slew rates, low input bias
and offset currents, and low offset voltage tem-
perature coefficient.
ORDER CODE
N = Dual in Line Package (DIP)
D = Small Outline Package (SO) - also available in Tape & Reel (DT)
PIN CONNECTIONS (top view)
Part Number Temperature Range
Package
ND
LF147 -55°C, +125°C
••
LF247 -40°C, +105°C
••
LF347 0°C, +70°C
••
Example : LF347IN
N
DIP14
(Plastic Package)
D
SO14
(Plastic Micropackage)
Inverting Input 2
Non-inverting Input 2
Non-inverting Input 1
CC
V
-
CC
V
1
2
3
4
8
5
6
7
9
10
11
12
13
14
+
Output 3
Output 4
Non-inverting Input 4
Inverting Input 4
Non-inverting Input 3
Inverting Input 3
-
+
-
+
-
+
-
+
Output 1
Inverting Input 1
Output 2
LF147 - LF247
LF347
WIDE BANDWIDTH
QUAD J-FET OPERATIONAL AMPLIFIERS
March 2001
LF147 - LF247 - LF347
2/10
SCHEMATIC DIAGRAM (each amplifier)
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter LF147 LF247 LF347 Unit
V
CC
Supply voltage - note
1)
1. All voltage values, except differential voltage, are with respect to the zero reference level (ground) of the supply voltages where the zero reference
level is the midpoint between V
CC
+
and V
CC
-
.
±18 V
V
i
Input Voltage - note
2)
2. The magnitude of the input voltage must never exceed the magnitude of the supply voltage or 15 volts, whichever is less.
±15 V
V
id
Differential Input Voltage - note
3)
3. Differential voltages are the non-inverting input terminal with respect to the inverting input terminal.
±30 V
P
tot
Power Dissipation 680 mW
Output Short-circuit Duration - note
4)
4. The output may be shorted to ground or to either supply. Temperature and/or supply voltages must be limited to ensure that the dissipation rating
is not exceeded
Infinite
T
oper
Operating Free-air Temperature Range -55 to +125 -40 to +105 0 to +70 °C
T
stg
Storage Temperature Range -65 to +150 °C
Output
Non-inverting input
Inverting input
V
CC
V
CC
200
W
W
100
W
100
1.3k
30k
35k
35k
W
100
1.3k
8.2k
LF147 - LF247 - LF347
3/10
ELECTRICAL CHARACTERISTICS
V
CC
= ±15V, T
amb
= +25°C (unless otherwise specified)
Symbol Parameter Min. Typ. Max. Unit
V
io
Input Offset Voltage (R
s
=
10k
)
T
amb
= 25°C
T
min
T
amb
T
max
310
13
mV
DV
io
Input Offset Voltage Drift 10
µ
V/°C
I
io
Input Offset Current - note
1)
T
amb
= 25°C
T
min
T
amb
T
max
1. The input bias currents are junction leakage currents which approximately double for every 10°C increase in the junction temperature.
5100
4
pA
nA
I
ib
Input Bias Current - note 1
T
amb
= 25°C
T
min
T
amb
T
max
20 200
20
pA
nA
A
vd
Large Signal Voltage Gain (R
L
= 2k
, V
o
= ±10V)
,
T
amb
= 25°C
T
min
T
amb
T
max
50
25
200
V/mV
SVR
Supply Voltage Rejection Ratio (R
S
=
10k
Ω)
T
amb
= 25°C
T
min
T
amb
T
max
80
80
86
dB
I
CC
Supply Current, Per Amp, no Load
T
amb
= 25°C
T
min
T
amb
T
max
1.4 2.7
2.7
mA
V
icm
Input Common Mode Voltage Range
±11 +15
-12
V
CMR
Common Mode Rejection Ratio (R
S
=
10k
Ω)
T
amb
= 25°C
T
min
T
amb
T
max
70
70
86
dB
I
OS
Output Short-Circuit Current
T
amb
= 25°C
T
min
T
amb
T
max
10
10
40 60
60
mA
±V
opp
Output Voltage Swing
T
amb
= 25°C R
L
= 2k
R
L
= 10k
T
min
T
amb
T
max
R
L
= 2k
R
L
= 10k
10
12
10
12
12
13.5
V
SR
Slew Rate
V
i
= 10V, R
L
= 2k
, C
L
= 100pF, T
amb
= 25°C, unity gain
12 16
V/
µ
s
t
r
Rise Time
V
i
= 20mV, R
L
= 2k
,C
L
= 100pF, T
amb
= 25°C, unity gain
0.1
µ
s
K
ov
Overshoot
V
i
= 20mV, R
L
= 2k
, C
L
= 100pF, T
amb
= 25°C, unity gain
10
%
GBP
Gain Bandwidth Product
f =100kHz, T
amb
= 25°C, V
in
= 10mV, R
L
=2k
, C
L
= 100pF
2.5 4
MHz
R
i
Input Resistance
10
12
THD
Total Harmonic Distortion
f =1kHz, A
v
= 20dB, R
L
= 2k
, C
L
= 100pF
T
amb
= 25°C, V
O
= 2Vpp 0.01
%
e
n
Equivalent Input Noise Voltage (R
S
=
100
Ω,
f = 1KHz)
15
m Phase Margin 45 Degrees
V
o1
/V
o2
Channel Separation ( A
v
= 100)
120 dB
nV
Hz
------------

LF347N

Mfr. #:
Manufacturer:
STMicroelectronics
Description:
Operational Amplifiers - Op Amps Quad Wideband JFET
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet