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PDF NE944 Data sheet ( Hoja de datos )
| Número de pieza | NE944 | |
| Descripción | NPN SILICON OSCILLATOR AND MIXER TRANSISTOR | |
| Fabricantes | NEC | |
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NPN SILICON NE944
OSCILLATOR AND MIXER TRANSISTOR SERIES
FEATURES
• LOW COST
• HIGH GAIN BANDWIDTH PRODUCT:
fT = 2000 MHz TYP
• LOW COLLECTOR TO BASE TIME CONSTANT:
CC•r b'b = 5 ps TYP
• LOW FEEDBACK CAPACITANCE: CRE= 0.55 pF TYP
DESCRIPTION
The NE944 series of NPN silicon epitaxial bipolar transistors
is intended for use in general purpose UHF oscillator and
mixer applications. It is suitable for automotive keyless entry
and TV tuner designs.
The device features stable oscillation and small frequency
drift during changes in the supply voltage and over the
ambient temperature range.
ELECTRICAL CHARACTERISTICS (TA = 25°C)
SYMBOLS
ICBO
hFE
VCE(sat)
fT
COB
CC•rb'b
CRE
RTH (J-C)
RTH (J-A)
PT
PART NUMBER
EIAJ1 REGISTERED NUMBER
PACKAGE CODE
PARAMETERS AND CONDITIONS
Collector Cutoff Current, VCB = 12 V, IE = 0
DC Current Gain, VCE = 10 V, IC = 5.0 mA
Collector Saturation Voltage, IC = 10 mA, IB = 1.0 mA
Gain Bandwidth Product, VCE = 3 V, IE = 5 mA
Output Capacitance, VCB = 3 V, IE = 0 mA, f = 1.0 MHz
Collector to Base Time Constant, VCE = 3 V,
IE = -5.0 mA, f = 31.9 MHz
Feedback Capacitance, VCB = 10 V, IE = 0 mA, f = 1.0 MHz
Thermal Resistance, Junction to Case (infinite heat sink)
Thermal Resistance, Junction to Ambient (free air)
Power Dissipation
Note:
1. Electronic Industrial Association of Japan.
NE94430
2SC4184
30
NE94433
2SC3545
33
UNITS MIN TYP MAX MIN TYP MAX
µA 0.1 0.1
40 100 200 50 100 250
V 0.5 0.5
GHz 1.2 2.0
1.3 2.0
pF 0.7 1.2
ps
pF
°C/W
°C/W
mW
3.5 8.0
5.0
0.55 1.0
200 200
833 620
150 150
California Eastern Laboratories
1 page  
TYPICAL COMMON EMITTER SCATTERING PARAMETERS (TA = 25°C)
NE944 SERIES
j25
j10
0 10 25
-j10
-j25
j50
j100
S11
3 GHz
50 100
S11
.05 GHz
0
S22
.05 GHz
S22
3 GHz
-j50
-j100
Coordinates in Ohms
Frequency in GHz
(VCE = 3 V, IC = 10 mA)
120˚
90˚
60˚
S12
150˚ 3 GHz 30˚
S21
0.5 GHz
S21
3 GHz
180˚
S12 .1 .2 .3 .4 .5 0˚
0.5 GHz
8
-150˚
10
-30˚
-120˚
12
14 -60˚
-90˚
NE94430
VCE = 3 V, IC = 10 mA
FREQUENCY
S11
(MHz) MAG ANG
50
100
200
300
400
500
600
700
800
900
1000
1500
2000
2500
3000
.585 -42.0
.496 -76.7
.354 -119.1
.320 -138.2
.313 -150.2
.310 -158.3
.313 -164.8
.317 -170.5
.322 -175.4
.326 -179.9
.330 175.5
.354 154.6
.374 134.2
.402 114.4
.438 96.2
S21
MAG ANG
12.113
10.005
6.964
5.042
3.910
3.184
2.680
2.316
2.040
1.824
1.652
1.145
0.887
0.722
0.613
141.5
124.0
102.0
91.6
84.5
78.7
73.6
69.1
64.8
60.8
57.1
41.2
28.1
18.6
13.2
S12
MAG ANG
.010 70.5
.015 60.1
.028 63.7
.039 65.1
.049 66.7
.058 66.7
.067 67.6
.076 68.2
.084 68.2
.093 68.6
.101 68.7
.148 70.1
.202 69.0
.269 66.2
.347 60.7
S22
MAG ANG
.896 -11.0
.799 -13.5
.721 -13.4
.702 -14.0
.693 -15.4
.690 -17.3
.689 -19.5
.689 -21.8
.689 -24.2
.690 -26.6
.690 -29.1
.694 -41.0
.697 -53.8
.689 -66.7
.668 -80.6
K S21 MAG
(dB) (dB)
0.64 21.7 30.8
0.95 20.0 28.2
1.05 16.9 22.5
1.12 14.0 19.1
1.16 11.8 16.6
1.21 10.1 14.6
1.23 8.6 13.1
1.24 7.3 11.9
1.26 6.2 10.8
1.26 5.2 9.9
1.27 4.4 9.0
1.18 1.2 6.3
1.07 -1.0 4.8
1.01 -2.8 3.7
1.01 -4.3 2.1
VCE = 10 V, Ic = 5 mA
50
100
200
300
400
500
600
700
800
900
1000
1500
2000
2500
3000
.860
.788
.574
.428
.349
.312
.293
.282
.277
.274
.273
.283
.301
.334
.380
-17.7
-35.1
-68.0
-95.6
-114.9
-127.9
-138.0
-146.3
-153.6
-159.8
-165.8
168.0
144.3
121.7
101.5
7.577 156.2 .012 79.9
6.982 141.8 .021 60.9
6.049 120.3 .033 60.0
4.966 104.4 .039 59.9
4.020 93.9 .045 61.9
3.329 86.6 .053 62.5
2.823 80.7 .060 63.9
2.450 75.6 .067 64.5
2.165 70.9 .074 65.0
1.941 66.7 .082 66.0
1.759 62.8 .088 66.3
1.223 46.3 .126 68.6
0.949 32.5 .167 69.7
0.772 22.0 .221 69.6
0.649 15.0 .290 66.7
.960 -6.1
.909 -10.2
.826 -12.6
.792 -13.6
.776 -14.7
.768 -16.3
.765 -18.1
.763 -19.9
.762 -22.0
.761 -24.0
.760 -26.1
.763 -36.0
.768 -46.8
.766 -57.6
.755 -69.3
0.30 17.6 28.0
0.57 16.9 25.2
0.71 15.6 22.6
0.86 13.9 21.0
0.98 12.1 19.5
1.04 10.4 16.7
1.09 9.0 14.9
1.13 7.8 13.5
1.15 6.7 12.3
1.15 5.8 11.4
1.18 4.9 10.4
1.12 1.7 7.8
1.03 -0.5 6.6
0.93 -2.2 5.4
0.87 -3.8 3.5
Note:
1. Gain Calculations:
( ).MAG = |S21| K ± K 2 - 1 When K ≤ 1, MAG is undefined and MSG values are used. MSG = |S21| , K = 1 + | ∆ | 2 - |S11| 2 - |S22| 2 , ∆ = S11 S22 - S21 S12
|S12|
|S12|
2 |S12 S21|
MAG = Maximum Available Gain
MSG = Maximum Stable Gain
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet NE944.PDF ] | |
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