BF1208D NXP Semiconductors, BF1208D Datasheet

Two dual-gate MOS Field-Effect Transistors with shared source and gate2 pins plus an integrated switch

BF1208D

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
Datasheet

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BF1208D
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1. Product profile
CAUTION
1.1 General description
1.2 Features
1.3 Applications
The BF1208D is a combination of two dual gate MOSFET amplifiers with shared source
and gate2 leads and an integrated switch. The integrated switch is operated by the gate1
bias of amplifier B.
The source and substrate are interconnected. Internal bias circuits enable
DC stabilization and a very good cross modulation performance during Automatic Gain
Control (AGC). Integrated diodes between the gates and source protect against excessive
input voltage surges. The transistor has a SOT666 micro-miniature plastic package.
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BF1208D
Dual N-channel dual gate MOSFET
Rev. 01 — 16 May 2007
Two low noise gain controlled amplifiers in a single package. One with a fully
integrated bias and one with a partly integrated bias
Internal switch to save external components
Superior cross modulation performance during AGC
High forward transfer admittance
High forward transfer admittance to input capacitance ratio
Gain controlled low noise amplifiers for VHF and UHF applications with 5 V supply
voltage
N
N
This device is sensitive to ElectroStatic Discharge (ESD). Therefore care should be taken
during transport and handling.
digital and analog television tuners
professional communication equipment
Product data sheet

Related parts for BF1208D

BF1208D Summary of contents

Page 1

... Rev. 01 — 16 May 2007 1. Product profile 1.1 General description The BF1208D is a combination of two dual gate MOSFET amplifiers with shared source and gate2 leads and an integrated switch. The integrated switch is operated by the gate1 bias of amplifier B. The source and substrate are interconnected. Internal bias circuits enable DC stabilization and a very good cross modulation performance during Automatic Gain Control (AGC) ...

Page 2

... Y S S(opt) amplifi 400 MHz - amplifi 800 MHz - = 50 MHz MHz unw [3] amplifier A 102 [4] amplifier B 102 - Simplified outline Symbol G1A G1B BF1208D Max Unit - 180 2.1 2.6 pF 2.1 2 0.9 1 ...

Page 3

... P tot (mW) 200 150 100 Rev. 01 — 16 May 2007 BF1208D Dual N-channel dual gate MOSFET Marking code 4A Conditions Min Max [1] T 109 C ...

Page 4

... V DS(A) amplifi G2-S DS(A) amplifi G1-S(A) amplifi G1-S( G2-S G1-S( G1-S(A) DS(A) DS(B) Figure 3). Figure 3). Rev. 01 — 16 May 2007 BF1208D Dual N-channel dual gate MOSFET Typ 225 Min Typ 0 100 A 0 100 [2] ...

Page 5

... MHz mS 400 MHz S(opt 800 MHz S(opt) Rev. 01 — 16 May 2007 BF1208D Dual N-channel dual gate MOSFET G1A G2 G1B 001aac205 amplifi off; amplifi on amplifi on; amplifi off. ...

Page 6

... 1.8 V. G1-S(A) = 1.7 V. G1-S(A) = 1.6 V. G1-S(A) = 1.5 V. G1-S(A) = 1.4 V. G1-S(A) = 1.3 V. G1-S(A) = 1.2 V. G1-S(A) = 1.1 V. G1-S( G1-S( G2-S G1-S(B) DS(B) values BF1208D Typ Max Unit - - 105 - dB V 001aaa555 (1) (2) (3) (4) (5) (6) (7) ( © NXP B.V. 2007. All rights reserved ...

Page 7

... Product data sheet 001aaa556 20 I D(A) (mA) (1) 16 (2) 12 (3) ( (mA Fig 7. Amplifier A: drain current as a function of Rev. 01 — 16 May 2007 BF1208D Dual N-channel dual gate MOSFET D( DS(A) G2-S DS( G1-S(B) j ...

Page 8

... V; gate1 (AMP A) is open; DS(A) G1-S( voltage; typical values MHz; DS(A) DS(B) G1-S(B) see Figure 33. AGC voltage; typical values BF1208D 001aaa559 (1) (2) (3) (4) (5) ( (V) G2-S 001aac196 (V) AGC © NXP B.V. 2007. All rights reserved ...

Page 9

... D(A) frequency; typical values (MHz DS(A) G2-S DS( D(A) phase as a function of frequency; typical values BF1208D 001aag357 G1-S(B) 001aag359 (deg G1-S(B) © NXP B.V. 2007. All rights reserved ...

Page 10

... Noise data for amplifi mA; V G2-S D(A) DS(B) NF (dB) min opt (ratio) 0.9 0.77 1.1 0.73 Rev. 01 — 16 May 2007 BF1208D Dual N-channel dual gate MOSFET 001aag360 (MHz D( typical values. G1-S(B) amb ...

Page 11

... DS(A) Rev. 01 — 16 May 2007 Dual N-channel dual gate MOSFET Min Typ 25 [2] - [2] - [ MHz unw 102 BF1208D Max Unit 2.1 2 1.1 1.7 dB 1.4 2 ...

Page 12

... Fig 18. Amplifier B: output characteristics; typical Rev. 01 — 16 May 2007 Dual N-channel dual gate MOSFET 1.6 V. G1-S(B) = 1.5 V. G1-S(B) = 1.4 V. G1-S(B) = 1.3 V. G1-S(B) = 1.2 V. G1-S(B) = 1.1 V. G1-S( G1-S( G2-S DS(A) G1-S(A) values BF1208D 001aag362 (1) (2) (3) (4) (5) ( © NXP B.V. 2007. All rights reserved ...

Page 13

... DS(B) G2-S DS( (connected Figure 3. supply voltage; typical values BF1208D 001aag364 (1) (2) ( (mA 001aag366 ( G1-S(A) ); see GG © NXP B.V. 2007. All rights reserved ...

Page 14

... Dual N-channel dual gate MOSFET DS(B) DS(A) G1-S( (connected see G1 GG voltage; typical values BF1208D 001aag368 (1) (2) (3) (4) ( (V) G2 Figure 3. © NXP B.V. 2007. All rights reserved ...

Page 15

... Fig 26. Amplifier B: unwanted voltage 001aag371 I D (mA (V) AGC = G1-S( MHz; GG Fig 28. Amplifier B: drain current as a function of gain Rev. 01 — 16 May 2007 BF1208D Dual N-channel dual gate MOSFET 120 110 100 gain reduction (dB DS(B) GG ...

Page 16

... D(B) phase as a function of frequency; typical values (MHz DS(B) G2-S DS( D(B) frequency; typical values BF1208D 001aag374 (deg G1-S(A) 001aag376 G1-S(A) © NXP B.V. 2007. All rights reserved ...

Page 17

... Noise data for amplifi mA; V G2-S D(B) DS(A) NF (dB) min opt (ratio) 1.1 0.72 1.4 0.68 Rev. 01 — 16 May 2007 BF1208D Dual N-channel dual gate MOSFET = typical values. G1-S(A) amb Angle Magnitude Angle Magnitude (deg) (ratio) (deg) (ratio) 176 ...

Page 18

... G2 50 BF1208D 4 G1B AGC 10 k 4.7 nF G1A 4 BF1208D 4.7 nF G1B R GEN Rev. 01 — 16 May 2007 BF1208D Dual N-channel dual gate MOSFET V DS( 2 2 DS(B) 5V 001aag398 V DS( ...

Page 19

... scale 1.3 1.7 0.3 1.0 0.5 1.1 1.5 0.1 REFERENCES JEDEC JEITA Rev. 01 — 16 May 2007 BF1208D Dual N-channel dual gate MOSFET detail 0.1 0.1 EUROPEAN PROJECTION © NXP B.V. 2007. All rights reserved. SOT666 ISSUE DATE 04-11-08 06-03- ...

Page 20

... Automatic Gain Control Direct Current Metal-Oxide Semiconductor Field-Effect Transistor Ultra High Frequency Very High Frequency Data sheet status Product data sheet Rev. 01 — 16 May 2007 BF1208D Dual N-channel dual gate MOSFET Change notice Supersedes - - © NXP B.V. 2007. All rights reserved ...

Page 21

... Trademarks Notice: All referenced brands, product names, service names and trademarks are the property of their respective owners. http://www.nxp.com salesaddresses@nxp.com Rev. 01 — 16 May 2007 BF1208D Dual N-channel dual gate MOSFET © NXP B.V. 2007. All rights reserved ...

Page 22

... Please be aware that important notices concerning this document and the product(s) described herein, have been included in section ‘Legal information’. © NXP B.V. 2007. For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: salesaddresses@nxp.com BF1208D All rights reserved. Date of release: 16 May 2007 Document identifier: BF1208D_1 ...

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