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U4065B PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 U4065B
기능 FM Receiver IC
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U4065B 데이터시트, 핀배열, 회로
Features
On-chip Control Functions are Available for System Gain Adjust
(dB Linear versus DC Current)
Low Noise LO Design
ESD Protected
Benefits
All Front-end Functions of a High-performance FM Receiver Except the RF
Preamplifier are Integrated
Improved Dynamic Range by High Current Double-balanced Mixer Design and a New
AGC Conception with 3 Loops On-chip
Improved Blocking and Intermod Behavior Due to a Unique “Interference” Sensor
Controlling the AGC
Easy Cascading of 3 IF Filters (Ceramic) Enabled by Two On-chip IF Preamplifiers
FM Receiver IC
U4065B
Description
The IC U4065B is a bipolar integrated FM front-end circuit. It contains a mixer, an
oscillator, two IF preamplifiers and an unique interference sensor. The device is
designed for high-performance car radio and home receiver applications.
Rev. 4807A–AUDR–05/04




U4065B pdf, 반도체, 판매, 대치품
Pin Description
Pin Symbol
1 LOBUFF
2 GND1
3 IF2OUT
4 GAINIF1
5 IF2IN
6 VS
7 IF1OUT
8 GND2
9 IMIFIN
10 AGCOUT
11 IMMIXOUT
12 NC
13 AGCWB
14 GND3
15 MIXIN1
16 MIXIN2
17 VREF
18 MIXOUT1
19 MIXOUT2
20 GND4
21 IF1IN
22 GND5
23 LOE
24 LOB
Function
Buffered local oscillator output
Ground of the second IF amplifier
Output of the second IF amplifier
Gain control of the first IF amplifier
Input of the second IF amplifier
Supply voltage
Output of the first IF amplifier
Ground
Input of the amplifier for the IM sensor
Output of the automatic gain control
Output of the intermodulation mixer
Not connected
Threshold adjustment of the wideband AGC
Mixer ground
Input 1 of the double-balanced mixer
Input 2 of the double-balanced mixer
Reference voltage output
Mixer output 1
Mixer output 2
Ground of the first IF amplifier
Input of the first IF amplifier
Oscillator ground
Local oscillator (emitter)
Local oscillator (base)
4 U4065B
4807A–AUDR–05/04

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U4065B 전자부품, 판매, 대치품
IF1OUT
Figure 8. Output of the First IF Amplifier
VS
330
ESD
7
U4065B
IMIFIN
The parallel output resistance is 330 which allows the use of standard ceramic BPF.
The parallel output capacitance is about 7 pF. The DC voltage at the pin is 0.5 V less
than VS.
Figure 9. Input of the IF Amplifier for the IM Sensor
9
ESD
The parallel input resistance is 330 . The amplifier is extremely sensitive to AC signals.
An IF signal with a few hundred µV at this pin will cause current at the AGC output.
Therefore, attention needs to be paid when connecting the standard ceramic filter
between IMOUT and this pin. The reference point of the filter has to be free of any AC
signal, no DC current shall appear at this pin.
4807A–AUDR–05/04
7

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전력 반도체 판매 ( IGBT, TR 모듈, SCR, 다이오드 모듈 )

휴대전화 : 010-3582-2743


상호 : 아이지 인터내셔날

전화번호 : 051-319-2877, [ 홈페이지 ]



링크공유

링크 :

관련 데이터시트

부품번호상세설명 및 기능제조사
U4065B

FM Receiver IC

Atmel
Atmel

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