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| 型號(hào)： | U2510B-MT |
| 廠商： | Atmel Corp. |
| 英文描述： | All-Band AM/FM Receiver and Audio Amplifier |
| 中文描述： | 全波段的AM / FM接收器和音頻放大器 |
| 文件頁數(shù)： | 1/15頁 |
| 文件大小： | 262K |
| 代理商： | U2510B-MT |
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
Superior FM strong signal behavior by using RF AGC
Soft mute and HCC for decreasing interstation noise
in FM mode
Excellent AFC performance (level controlled, both
polarities available)
Level indicator (LED drive) for AM and FM
DC mode control: AM, FM and tape
Wide supply-voltage range and low quiescent current
High AF output power: 1 W
Electronic volume control
Electronic AF bandwidth control (treble and high cut)
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
8
7
6
AFC
14
16
27
3
25
23
24
4
FM osc.
tank
FM RF
tank
IF BPE
2
26
(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
RFAGC
V
Ref
S
2
Figure 1. Block diagram
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