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PDF BF1214 Data sheet ( Hoja de datos )
| Número de pieza | BF1214 | |
| Descripción | Dual N-channel dual gate MOSFET | |
| Fabricantes | NXP Semiconductors | |
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BF1214
Dual N-channel dual gate MOSFET
Rev. 01 — 30 October 2007
www.datasheet4u.com
1. Product profile
Product data sheet
CAUTION
1.1 General description
The BF1214 is a combination of two dual gate MOSFET amplifiers with shared source
and gate2 leads.
The source and substrate are interconnected. Internal bias circuits enable
DC stabilization and a very good cross modulation performance during AGC. Integrated
diodes between the gates and source protect against excessive input voltage surges. The
transistor has a SOT363 micro-miniature plastic package.
This device is sensitive to ElectroStatic Discharge (ESD). Therefore care should be taken
during transport and handling.
1.2 Features
I Two low noise gain controlled amplifiers in a single package; both with a partly
integrated bias
I Superior cross modulation performance during AGC
I High forward transfer admittance
I High forward transfer admittance to input capacitance ratio
I Both amplifiers optimized for VHF applications, yet suitable for VHF and UHF
applications
1.3 Applications
I Gain controlled low noise amplifiers for VHF and UHF applications with 5 V supply
voltage
N digital and analog television tuners
N professional communication equipment
1 page  
NXP Semiconductors
BF1214
Dual N-channel dual gate MOSFET
8. Dynamic characteristics
www.datasheet4u.com
Table 8. Dynamic characteristics for amplifier A and B
Common source; Tamb = 25 °C; VG2-S = 4 V; VDS = 5 V; ID = 18 mA.
Symbol Parameter
Conditions
|yfs|
Ciss(G1)
Ciss(G2)
Coss
Crss
Gtr
NF
Xmod
forward transfer admittance f = 100 MHz; Tj = 25 °C
input capacitance at gate1 f = 100 MHz
input capacitance at gate2 f = 100 MHz
output capacitance
f = 100 MHz
reverse transfer capacitance f = 100 MHz
transducer power gain
noise figure
cross modulation
amplifier A; BS = BS(opt); BL = BL(opt)
f = 200 MHz; GS = 2 mS; GL = 0.5 mS
f = 400 MHz; GS = 2 mS; GL = 1 mS
f = 800 MHz; GS = 3.3 mS; GL = 1 mS
amplifier B; BS = BS(opt); BL = BL(opt)
f = 200 MHz; GS = 2 mS; GL = 0.5 mS
f = 400 MHz; GS = 2 mS; GL = 1 mS
f = 800 MHz; GS = 3.3 mS; GL = 1 mS
f = 11 MHz; GS = 20 mS; BS = 0 S
f = 400 MHz; YS = YS(opt)
f = 800 MHz; YS = YS(opt)
input level for k = 1 %; fw = 50 MHz;
funw = 60 MHz
at 0 dB AGC
at 10 dB AGC
at 20 dB AGC
at 40 dB AGC
[1] Calculated from S-parameters.
[2] Measured in Figure 24 test circuit.
Min Typ Max Unit
27 32 37 mS
[1] - 2.2 2.7 pF
[1] -
3.5 -
pF
[1] -
0.8 -
pF
[1] -
20 -
fF
[1]
31 35 39 dB
27 31 35 dB
22 26 30 dB
[1]
31
29
25
-
-
-
[2]
35 39 dB
33 37 dB
29 33 dB
3.0 -
dB
0.9 1.5 dB
1.2 1.8 dB
90 -
-
- 94 -
- 99 -
102 105 -
dBµV
dBµV
dBµV
dBµV
BF1214_1
Product data sheet
Rev. 01 — 30 October 2007
© NXP B.V. 2007. All rights reserved.
5 of 18
5 Page 
NXP Semiconductors
BF1214
Dual N-channel dual gate MOSFET
8.2.1 Scattering parameters for amplifier A
www.dTaatabslehe9e.t4u.cSomcattering parameters for amplifier A
VDS(A) = 5 V; VG2-S = 4 V; ID(A) = 18 mA; VDS(B) = 0 V; VG1-S(B) = 0 V; Tamb = 25 °C; typical values.
f (MHz) s11 s21 s12 s22
Magnitude
(ratio)
Angle
(deg)
Magnitude
(ratio)
Angle
(deg)
Magnitude
(ratio)
Angle
(deg)
Magnitude
(ratio)
40 0.9877
−3.07 3.07
176.73 0.0006
88.01 0.9902
100 0.9888
−7.81 3.07
171.67 0.0012
85.54 0.9918
200 0.9852
−15.61 3.04
163.23 0.0022
80.05 0.9910
300 0.9766
−23.41 3.00
154.91 0.0033
75.66 0.9896
400 0.9643
−31.14 2.95
146.63 0.0042
71.57 0.9881
500 0.9504
−38.62 2.89
138.57 0.0050
67.10 0.9859
600 0.9339
−45.96 2.82
130.61 0.0056
63.38 0.9836
700 0.9151
−53.13 2.74
122.79 0.0061
59.74 0.9813
800 0.8960
−60.18 2.66
115.17 0.0064
56.44 0.9790
900 0.8766
−67.00 2.57
107.66 0.0065
53.53 0.9769
1000 0.8564
−73.58 2.49
100.35 0.0066
50.29 0.9753
8.2.2 Noise data for amplifier A
Table 10. Noise data for amplifier A
VDS(A) = 5 V; VG2-S = 4 V; ID(A) = 18 mA; Tamb = 25 °C; typical values.
f (MHz)
NFmin (dB)
Γopt
(ratio)
400 0.91 0.76
800 1.23 0.71
(deg)
23.60
48.91
rn (ratio)
0.677
0.620
Angle
(deg)
−1.00
−2.74
−5.50
−8.22
−10.93
−13.61
−16.28
−18.96
−21.60
−24.20
−26.88
BF1214_1
Product data sheet
Rev. 01 — 30 October 2007
© NXP B.V. 2007. All rights reserved.
11 of 18
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet BF1214.PDF ] | |
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