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U2510B データシート(PDF) 1 Page - ATMEL Corporation

部品番号 U2510B
部品情報  All-Band AM/FM Receiver and Audio Amplifier
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メーカー  ATMEL [ATMEL Corporation]
ホームページ  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

U2510B データシート(HTML) 1 Page - ATMEL Corporation

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U2510B
Rev. A3, 23-Feb-01
1 (15)
All-Band AM/FM Receiver and Audio Amplifier
Description
The U2510B is an integrated bipolar one-chip AM/FM
radio circuit. It contains an FM front end with
preamplifier, FM IF and demodulator, a complete AM
receiver, an AF amplifier and a mode switch for AM, FM
and tape. This circuit is designed for clock radios and
portable radio-cassette recorders.
Features
D Superior FM strong signal behavior by using RF AGC
D Soft mute and HCC for decreasing interstation noise
in FM mode
D Excellent AFC performance (level controlled, both
polarities available)
D Level indicator (LED drive) for AM and FM
D DC mode control: AM, FM and tape
D Wide supply-voltage range and low quiescent current
D High AF output power: 1 W
D Electronic volume control
D Electronic AF bandwidth control (treble and high cut)
D Output stage for headphone and speaker drive
Block Diagram
FM
front end
9
AM
front end
FM
AGC
12
13912
Voltage stab.
and
mode control
AM/FM
AFC
control
AM IF
amp. and
detect.
AM
AGC
Level
indic.
FM IF
amp.
FM
discr.
15
Power
amp.
28
AF preamp.
Volume
Mute
HCC
87
6
AFC
14
16
27
3
25
23
24
4
FM osc.
tank
FM RF
tank
IF BPE
226
(Replaceable)
FM RF
BPE
AM
ant.
AM osc.
tank
11
10
5
AGC
FM ant.
21
13
20
19
1
22
18
V
S
Treble
Vol
V
S
LED
AFC mode
Tape
AM
FM
V
S
IF
AGC
IF
RF AGC
V
Ref
S
2
Figure 1. Block diagram


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