器件名称: U2510B
功能描述: All-Band AM/FM Receiver and Audio Amplifier
文件大小: 262.95KB 共15页
简 介:U2510B
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 RF tank FM ant. VS 9 8 7 AFC FM RF BPE AGC 12 FM front end FM AGC AM front end RF AGC Voltage stab. and mode control 15 AM/FM IF AGC AM AGC AFC control AM IF amp. and detect. IF Level indic. AF preamp. Volume Mute HCC 21 13 20 19 1 22 18 FM IF amp. FM discr. Power amp. 25 23 24 4 6 14 16 2 26 28 27 3 FM osc. tank IF BPE (Replaceable)
11
AM ant. AM osc. tank
10
5
VRef
AM
S2
VS AFC mode
LED VS Treble Vol
13912
FM Tape
Figure 1. Block diagram
Rev. A3, 23-Feb-01
1 (15)
U2510B
Order Information
Extended Type Number U2510B-M U2510B-M__T Package SDIP28 SDIP28
Pin 5 28 AF-GND 6
Remarks VS < 6 V supply voltage
Symb……