BF1208D NXP Semiconductors, BF1208D Datasheet - Page 13

• Manufacturer Part Number: BF1208D
• Description: Two dual-gate MOS Field-Effect Transistors with shared source and gate2 pins plus an integrated switch
• Manufacturer: NXP Semiconductors

NXP Semiconductors
BF1208D_1
Product data sheet
Fig 19. Amplifier B: gate1 current as a function of
Fig 21. Amplifier B: drain current as a function of gate1
(mA)
( A)
(1) V
(2) V
(3) V
(4) V
(5) V
(6) V
(7) V
I
G1
I
D
100
80
60
40
20
20
16
12
0
8
4
0
V
gate1 voltage; typical values
V
T
current; typical values
0
0
j
G2-S
G2-S
G2-S
G2-S
G2-S
G2-S
G2-S
DS(B)
DS(B)
= 25 C.
= 4 V.
= 3.5 V.
= 3 V.
= 2.5 V.
= 2 V.
= 1.5 V.
= 1 V.
= 5 V; V
= 5 V; V
0.4
10
DS(A)
G2-S
0.8
20
= 4 V; V
= V
G1-S(A)
1.2
DS(A)
30
= 0 V; T
= V
G1-S(A)
1.6
40
V
j
001aag363
001aag365
G1-S
I
= 25 C.
G1
( A)
(1)
(2)
(3)
(4)
(5)
(6)
(7)
= 0 V;
(V)
2.0
50
Rev. 01 — 16 May 2007
Fig 20. Amplifier B: forward transfer admittance as a
Fig 22. Amplifier B: drain current as a function of gate1
(mA)
(1) V
(2) V
(3) V
(4) V
(5) V
(6) V
(7) V
(mS)
Y
I
D
fs
40
32
24
16
20
16
12
8
0
8
4
0
V
function of drain current; typical values
V
T
Figure
supply voltage; typical values
0
0
j
G2-S
G2-S
G2-S
G2-S
G2-S
G2-S
G2-S
DS(B)
DS(B)
= 25 C; R
(7)
= 4 V.
= 3.5 V.
= 3 V.
= 2.5 V.
= 2 V.
= 1.5 V.
= 1 V.
= 5 V; V
= 5 V; V
3.
1
(6)
8
Dual N-channel dual gate MOSFET
G1
DS(A)
G2-S
= 86 k (connected to V
2
= 4 V; V
= V
(5)
16
G1-S(A)
DS(A)
3
= 0 V; T
(4)
= V
24
BF1208D
© NXP B.V. 2007. All rights reserved.
G1-S(A)
4
(1)
(2)
I
(3)
j
001aag364
D
001aag366
V
= 25 C.
GG
(mA)
GG
); see
= 0 V;
(V)
32
5
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