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FERRANTI |
LowlloiseAmplifier
2N459
zN459C
zN459CP
FEATURES
O High Controlled Gain
O Low Noise
O Wide Bandwidth
O Low Supply Current
: 60dB *1 dB typical
: 40O Equival€nt Noise
Resistance, or 800 pVlt/Fz
: 15 MHz typical
: <3 mA from 5V
DESCRIPTION
A versatile high grade a.cr pre-amplifier designed for
applications requiring ultra low noise such as infra-red
imaging and low noise wide band amplifiers e.g, micro-
phone, acoustic emission, transducer bridge amplifier.
The matching of open loop gain coupled with small phy-
sical size make the 2N459 series ideal for multichannel
amplification.
2N459/ZN459C
w-^v^.
/-/z/
4?
TO-71
I
zN459CP
.
t:xal,l
Y/''Y I
I
8-LeadD.l.L.
2 N 4 5 9O U T L I N EC I R C U I T
2N459 Series
ABSOLUTME AXIMUM RATINGS
SupplyVoltage
OperatingTemperaturReange:
for2N459
f o r Z N 4 5 9 Ca n dZ N 4 5 9 C P
S t o r a gTe e m p e r a t uRr ea n g e
6 .0 Volts
..
..
-55
0
t
t
o
o
+1
+7
2
0
5''CC
.. -55 to +125'C
CHARACTERISTI(CaStVcc: 5V,Ta-o : 25'C).
Parameter
Supply Current . .
VoltageGain
TC of VoltageGain
Vsq Coefflcientof VoltageGain
Cut-off Frequency
Input Resistance
Input Capacitance
Nolse Resistance
White NoiseVoltage
L.F.Spot Noise . . ..
White NoiseCurrent
Output Level
Supply Voltage Coefficiont
o f O u t p u tL e v e l . . . .
Output CurrentLimit
Total HarmonicDistortion
Output Resistance
S u p p l y R e j e c t i o nR a t i o
D e l a yT i m e
D e l a yT i m e
PositiveInput Overdrivo . .
Negativelnput Overdrivo . .
Min.
2.O
59
3.5
1.5
Tvp.
2.5
60
-o.2
25
15
80
40
800
3
1
2.O
Max.
3.0
61
Units
mA
dB
%/"c
o/olV
MHz
ko
pF
o
1't00 pv/t/tri
nV/lHz
p^/{Ei
2.5
Conditions
10kHz
3 dB down
10kHz
Note 1
Rs:o
Rs:o
Rs: 0,t:25H2
0.34
0.6 0.8 't.1
0.15
75
42.5
20
40
10
-5
mA Sinkcurrent
% 1 Vooat 10kHz
o 10kHz
dB
ns S m a l ls i g n a l
ns 100mV rmsinput
mA
Note 1: ln P.C.B. The Input Capacitancemay be reducedto 25pF by screeningbetween
output and input.
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