NXP Semiconductors
BF1210
Dual N-channel dual gate MOSFET
8.1.2 Scattering parameters for amplifier A
Table 9. Scattering parameters for amplifier A
VDS(A) = 5 V; VG2-S = 4 V; ID(A) = 19 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
0.9861
−3.2
3.14
176.75 0.00054
87.97 0.9934
100
0.9883
−7.84 3.14
171.53 0.00104
87.69 0.9925
200
0.9844
−15.7 3.12
163.1 0.00205
80.77 0.9918
300
0.9761
−23.52 3.08
154.65 0.00295
76.33 0.9904
400
0.9635
−31.26 3.03
146.33 0.00375
72.34 0.9888
500
0.9486
−38.78 2.97
138.15 0.00437
67.97 0.9870
600
0.9305
−46.2 2.90
130.12 0.00483
64.86 0.9847
700
0.9105
−53.33 2.81
122.26 0.0051
62.13 0.9832
800
0.8911
−60.2 2.73
114.65 0.0052
59.88 0.9817
900
0.8723
−67.03 2.65
107.2 0.00515
58.8
0.9796
1000 0.8521
−73.74 2.56
99.78 0.00498
58.03 0.9785
Angle
(deg)
−1.19
−2.85
−5.69
−8.51
−11.33
−14.13
−16.87
−19.61
−22.35
−25.03
−27.08
8.2 Noise data for amplifier A
Table 10. Noise data for amplifier A
VDS(A) = 5 V; VG2-S = 4 V; ID(A) = 19 mA, Tamb = 25 °C; typical values.
f (MHz)
NFmin (dB)
Γopt
(ratio)
400
0.9
0.749
800
1.2
0.688
(deg)
23.7
48.65
rn (ratio)
0.667
0.583
8.3 Dynamic characteristics for amplifier B
Table 11. Dynamic characteristics for amplifier B
Common source; Tamb = 25 °C; VG2-S = 4 V; VDS(B) = 5 V; ID(B) = 13 mA.
Symbol Parameter
Conditions
|yfs|
forward transfer admittance Tj = 25 °C
Ciss(G1) input capacitance at gate1 f = 100 MHz
Ciss(G2) input capacitance at gate2 f = 100 MHz
Coss
output capacitance
f = 100 MHz
Crss
reverse transfer capacitance f = 100 MHz
Gtr
transducer power gain
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
NF
noise figure
f = 11 MHz; GS = 20 mS; BS = 0 S
f = 400 MHz; YS = YS(opt)
f = 800 MHz; YS = YS(opt)
Min
28
[1] -
[1] -
[1] -
[1] -
[1]
32
29
27
-
-
-
Typ Max Unit
33 43 mS
1.9 2.4 pF
3.4 -
pF
0.85 -
pF
20 -
fF
36 40 dB
33 37 dB
31 35 dB
4
-
dB
0.9 1.5 dB
1.2 1.9 dB
BF1210_1
Product data sheet
Rev. 01 — 25 October 2006
© NXP B.V. 2006. All rights reserved.
11 of 21