U2861B-MFPY 71

U2861B-MFPY 71 Datasheet

The U2861B is an alignment-free FM sound IF demodulator for all TV standards from MHz up to MHz standard M, N, B/G, I, D/K . The circuit includes two switchable audio inputs and volume control. With a supply voltage of 5V, the U2861B is suitable for TV, VCR and Multimedia applications.

Part	Datasheet
U2861B-MFPY 71	U2861B-MFPY 71 (pdf)

PDF Datasheet Preview
• Completely Alignment-free • PLL Demodulator for FM Intercarrier Sound IF Signals Mono • Two Audio Switches • Very Few External Components • Volume Control by DC Voltage • Supply Voltage 5V • Pb-free Package, which is Compliant with Requirements of RoHS The U2861B is an alignment-free FM sound IF demodulator for all TV standards from MHz up to MHz standard M, N, B/G, I, D/K . The circuit includes two switchable audio inputs and volume control. With a supply voltage of 5V, the U2861B is suitable for TV, VCR and Multimedia applications. Figure Block Diagram AF1IN AF1OUT AF2IN Mono FM Sound Demodulator for TV Systems U2861B Sound IF input 3 VI,SIF 4 GND VI,AF1 1 VO,AF1 12 VI,AF2 10 CREF 6 Switch1 Bandgap reference Switch2 8 VO,AF2 AF2OUT CDEC VMUTE 14 CDEM 13 VSW1 11 VSW2 9 VVOl Decoupling FM De- Audio mute emphasis switch1 Audio Volume switch2 control Circuit Description Sound IF Limiter Amplifier The intercarrier signal coming from the sound filter is fed to a 7-stage limiter amplifier. This guarantees high input sensitivity and excellent AM suppression. PLL - FM Demodulator The alignment-free “Phase-Locked-Loop” PLL FM demodulator covers a wide frequency range of MHz up to MHz with excellent noise performance. Due to the fact that the voltage-to-frequency characteristic is linear, a low harmonic distortion can be achieved. The free-running frequency of the internal VCO circuit is about MHz. The demodulated FM signal is led via de-emphasis and buffered to pin The de-emphasis low-pass filter consists of an internal series resistor and an external capacitor at pin The FM muting is possible by switching pin 5 to ground. Audio Switch 1 The first audio switch pin 13 has inputs for the demodulated FM signal and the external AF1 signal from pin For multistandard purposes, it is possible to handle internal FM and external AM audio signals. The output of switch1 is also permanently available at pin 12 e.g., for SCART interface . Audio Switch 2 and Volume Control The second audio switch pin 11 has inputs for the audio signal from switch 1 and the external AF2 signal at pin The switched AF signal is fed to volume control. The output voltage can be controlled by a DC voltage at pin Internal Voltage Stabilizer The internal band-gap reference ensures constant performance independent of supply voltage and temperature. 2 U2861B [Preliminary] Ordering Information Extended Type Number U2861B-MFPG3Y U2861B-MFPY Package SO14, Pb-free SO14, Pb-free Remarks Taped and reeled Tube Package Information Package SO14 Dimensions in mm Standard Package Quantity 4,000 3,100 technical drawings according to DIN specifications Atmel Corporation 2325 Orchard Parkway San Jose, CA 95131, USA Tel 1 408 441-0311 Fax 1 408 487-2600 Regional Headquarters Europe Atmel Sarl Route des Arsenaux 41 Case Postale 80 CH-1705 Fribourg Switzerland Tel 41 26-426-5555 Fax 41 26-426-5500 Asia Room 1219 Chinachem Golden Plaza 77 Mody Road Tsimshatsui East Kowloon Hong Kong Tel 852 2721-9778 Fax 852 2722-1369 Japan 9F, Tonetsu Shinkawa Bldg. 1-24-8 Shinkawa Chuo-ku, Tokyo 104-0033 Japan Tel 81 3-3523-3551 Fax 81 3-3523-7581 Atmel Operations Memory 2325 Orchard Parkway San Jose, CA 95131, USA Tel 1 408 441-0311 Fax 1 408 436-4314 Microcontrollers 2325 Orchard Parkway San Jose, CA 95131, USA Tel 1 408 441-0311 Fax 1 408 436-4314 La Chantrerie BP 70602 44306 Nantes Cedex 3, France Tel 33 2-40-18-18-18 Fax 33 2-40-18-19-60 ASIC/ASSP/Smart Cards Zone Industrielle 13106 Rousset Cedex, France Tel 33 4-42-53-60-00 Fax 33 4-42-53-60-01 1150 East Cheyenne Mtn. Blvd. Colorado Springs, CO 80906, USA Tel 1 719 576-3300 Fax 1 719 540-1759 Scottish Enterprise Technology Park Maxwell Building East Kilbride G75 0QR, Scotland Tel 44 1355-803-000 Fax 44 1355-242-743 RF/Automotive Theresienstrasse 2 Postfach 3535 74025 Heilbronn, Germany Tel 49 71-31-67-0 Fax 49 71-31-67-2340 1150 East Cheyenne Mtn. Blvd. Colorado Springs, CO 80906, USA Tel 1 719 576-3300 Fax 1 719 540-1759 Biometrics/Imaging/Hi-Rel MPU/ High Speed Converters/RF Datacom Avenue de Rochepleine BP 123 38521 Saint-Egreve Cedex, France Tel 33 4-76-58-30-00 Fax 33 4-76-58-34-80 Literature Requests Disclaimer The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Atmel products. EXCEPT AS SET FORTH IN ATMEL’S TERMS AND CONDITIONS OF SALE LOCATED ON ATMEL’S WEB SITE, ATMEL ASSUMES NO LIABILITY WHATSOEVER AND DISCLAIMS ANY EXPRESS, IMPLIED OR STATUTORY WARRANTY RELATING TO ITS PRODUCTS INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, CONSEQUENTIAL, PUNITIVE, SPECIAL OR INCIDENTAL DAMAGES INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF PROFITS, BUSINESS INTERRUPTION, OR LOSS OF INFORMATION ARISING OUT OF THE USE OR INABILITY TO USE THIS DOCUMENT, EVEN IF ATMEL HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. Atmel makes no representations or warranties with respect to the accuracy or completeness of the contents of this document and reserves the right to make changes to specifications and product descriptions at any time without notice. Atmel does not make any commitment to update the information contained herein. Unless specifically provided otherwise, Atmel products are not suitable for, and shall not be used in, automotive applications. Atmel’s products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life. Atmel Corporation All rights reserved. logo and combinations thereof, Everywhere You and others, are registered trademarks or trademarks of Atmel Corporation or its subsidiaries. Other terms and product names may be trademarks of others. Printed on recycled paper.

PDF Datasheet Preview

• Completely Alignment-free
• PLL Demodulator for FM Intercarrier Sound IF Signals Mono
• Two Audio Switches
• Very Few External Components
• Volume Control by DC Voltage
• Supply Voltage 5V
• Pb-free Package, which is Compliant with Requirements of RoHS

The U2861B is an alignment-free FM sound IF demodulator for all TV standards from MHz up to MHz standard M, N, B/G, I, D/K . The circuit includes two switchable audio inputs and volume control. With a supply voltage of 5V, the U2861B is suitable for TV, VCR and Multimedia applications.

Figure Block Diagram

AF1IN

AF1OUT AF2IN

Mono FM Sound Demodulator for TV Systems

U2861B

Sound IF input 3 VI,SIF
4 GND

VI,AF1 1

VO,AF1 12

VI,AF2 10

CREF 6

Switch1

Bandgap reference

Switch2
8 VO,AF2 AF2OUT

CDEC VMUTE
14 CDEM
13 VSW1
11 VSW2
9 VVOl

Decoupling FM De-

Audio
mute emphasis switch1

Audio Volume switch2 control

Circuit Description

Sound IF Limiter Amplifier

The intercarrier signal coming from the sound filter is fed to a 7-stage limiter amplifier. This guarantees high input sensitivity and excellent AM suppression.

PLL - FM Demodulator

The alignment-free “Phase-Locked-Loop” PLL FM demodulator covers a wide frequency range of MHz up to MHz with excellent noise performance.

Due to the fact that the voltage-to-frequency characteristic is linear, a low harmonic distortion can be achieved. The free-running frequency of the internal VCO circuit is about MHz.

The demodulated FM signal is led via de-emphasis and buffered to pin The de-emphasis low-pass filter consists of an internal series resistor and an external capacitor at pin The FM muting is possible by switching pin 5 to ground.

Audio Switch 1

The first audio switch pin 13 has inputs for the demodulated FM signal and the external AF1 signal from pin

For multistandard purposes, it is possible to handle internal FM and external AM audio signals. The output of switch1 is also permanently available at pin 12 e.g., for SCART interface .

Audio Switch 2 and Volume Control

The second audio switch pin 11 has inputs for the audio signal from switch 1 and the external AF2 signal at pin The switched AF signal is fed to volume control. The output voltage can be controlled by a DC voltage at pin

Internal Voltage Stabilizer

The internal band-gap reference ensures constant performance independent of supply voltage and temperature.
2 U2861B [Preliminary]
Ordering Information

Extended Type Number U2861B-MFPG3Y U2861B-MFPY

Package SO14, Pb-free SO14, Pb-free

Remarks Taped and reeled

Tube

Package Information

Package SO14

Dimensions in mm

Standard Package Quantity 4,000 3,100
technical drawings according to DIN specifications

Atmel Corporation
2325 Orchard Parkway San Jose, CA 95131, USA Tel 1 408 441-0311 Fax 1 408 487-2600

Regional Headquarters

Europe Atmel Sarl Route des Arsenaux 41 Case Postale 80 CH-1705 Fribourg Switzerland Tel 41 26-426-5555 Fax 41 26-426-5500

Asia Room 1219 Chinachem Golden Plaza 77 Mody Road Tsimshatsui East Kowloon Hong Kong Tel 852 2721-9778 Fax 852 2722-1369

Japan 9F, Tonetsu Shinkawa Bldg. 1-24-8 Shinkawa Chuo-ku, Tokyo 104-0033 Japan Tel 81 3-3523-3551 Fax 81 3-3523-7581

Atmel Operations

Memory 2325 Orchard Parkway San Jose, CA 95131, USA Tel 1 408 441-0311 Fax 1 408 436-4314

Microcontrollers 2325 Orchard Parkway San Jose, CA 95131, USA Tel 1 408 441-0311 Fax 1 408 436-4314

La Chantrerie BP 70602 44306 Nantes Cedex 3, France Tel 33 2-40-18-18-18 Fax 33 2-40-18-19-60

ASIC/ASSP/Smart Cards Zone Industrielle 13106 Rousset Cedex, France Tel 33 4-42-53-60-00 Fax 33 4-42-53-60-01
1150 East Cheyenne Mtn. Blvd. Colorado Springs, CO 80906, USA Tel 1 719 576-3300 Fax 1 719 540-1759

Scottish Enterprise Technology Park Maxwell Building East Kilbride G75 0QR, Scotland Tel 44 1355-803-000 Fax 44 1355-242-743

RF/Automotive Theresienstrasse 2 Postfach 3535 74025 Heilbronn, Germany Tel 49 71-31-67-0 Fax 49 71-31-67-2340 1150 East Cheyenne Mtn. Blvd. Colorado Springs, CO 80906, USA Tel 1 719 576-3300 Fax 1 719 540-1759

Biometrics/Imaging/Hi-Rel MPU/ High Speed Converters/RF Datacom

Avenue de Rochepleine BP 123 38521 Saint-Egreve Cedex, France Tel 33 4-76-58-30-00 Fax 33 4-76-58-34-80

Literature Requests

Disclaimer The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Atmel products. EXCEPT AS SET FORTH IN ATMEL’S TERMS AND CONDITIONS OF SALE LOCATED ON ATMEL’S WEB SITE, ATMEL ASSUMES NO LIABILITY WHATSOEVER AND DISCLAIMS ANY EXPRESS, IMPLIED OR STATUTORY WARRANTY RELATING TO ITS PRODUCTS INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, CONSEQUENTIAL, PUNITIVE, SPECIAL OR INCIDENTAL DAMAGES INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF PROFITS, BUSINESS INTERRUPTION, OR LOSS OF INFORMATION ARISING OUT OF THE USE OR INABILITY TO USE THIS DOCUMENT, EVEN IF ATMEL HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. Atmel makes no representations or warranties with respect to the accuracy or completeness of the contents of this document and reserves the right to make changes to specifications and product descriptions at any time without notice. Atmel does not make any commitment to update the information contained herein. Unless specifically provided otherwise, Atmel products are not suitable for, and shall not be used in, automotive applications. Atmel’s products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life.

Atmel Corporation All rights reserved. logo and combinations thereof, Everywhere You and others, are registered trademarks or trademarks of Atmel Corporation or its subsidiaries. Other terms and product names may be trademarks of others.

Printed on recycled paper.

More datasheets: 5670H1_1 | 5670H5LC_1LC | 5670H5_7 | 5670H1LC_1LC | 5670H3_3 | 5670H7LC_7LC | 5670H3-5V_5-5V | 72103R-462 | 72103R-442 | DFR0129

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived U2861B-MFPY 71 Datasheet file may be downloaded here without warranties.

Datasheet ID: U2861B-MFPY 71 519481