 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
PACAC97 Datasheet(PDF) 1 Page - California Micro Devices Corp |
|
|
|||||||||||||||||||||||||||||
PACAC97 Datasheet(HTML) 1 Page - California Micro Devices Corp |
|
|
1 / 4 page  © 2000 California Micro Devices Corp. All rights reserved. 9/27/2000 1 PACAC97 CALIFORNIA MICRO DEVICES 215 Topaz Street, Milpitas, California 95035 Tel: (408) 263-3214 Fax: (408) 263-7846 www.calmicro.com PC Audio Resistor Network Features • Signal conditioning and gain setting resistors for all standard audio functions • Low noise thin film resistors ±1% match • Better than 1% matching between channels • Gain modification by changing resistors externally • Better than –90dB inter-channel and channel-to- channel crosstalk • Single 28-pin QSOP package • Saves board space and reduces assembly cost Product Description High quality audio systems have become standard for most personal computers. Furthermore, the audio functions have been migrating to the motherboard, putting pressure on available board space. The PACAC97 provides the components necessary for signal conditioning of analog audio inputs for an AC97 compli- ant Codec as well as gain setting resistors for head- phone and microphone amplifiers. Since analog signal levels can be as high as 2Vrms, the PACAC97 provides 6dB of attenuation (to 1Vrms) for LINE-IN, AUX, and CD inputs. The CD line level inputs of the PACAC97 have an additional ground signal, CD_GND, that supports the pseudo differential amplifier present in AC97 Codecs. This feature facilitates attenuation of common mode ground noise typically present at the output of CD ROM Applications • Analog audio system for Pentium II Class personal computers, used in conjunction with Audio Codec, CS4297 or AD1819A. drives. Connecting the CD pins as indicated in the application circuit provides attenuation of common mode noise from the CD inputs, thereby producing a higher quality CD signal. Finally, the device provides gain- setting resistors for the headphone and microphone amplifiers. The PACAC97 provides exceptional inter- channel and channel-to-channel crosstalk attenuation necessary for high quality audio. The PACAC97 provides performance, high reliability, and low cost through manufacturing efficiency, utilizing high volume and low cost IC manufacturing and processes. The process yields low noise and highly stable resistors demanded in audio applications. In addition, the 28-pin QSOP package is an industry standard that is easy to handle in manufacturing and provides package reliability SCHEMATIC CONFIGURATION C0441098 R23 33K Ω 28 AMP_OUT1 IN1 AMP2– IN2 GND LINE_IN_L AC97LINE_R LINE_IN_R AC97LINE_L GND AC97CD_R AC97CD_L AC97CD_GND AC97MIC MIC IN MIC+ MIC– CD_R CD_GND CD_L MIC_AMP_OUT AMP_OUT2 AMP1– 27 R23 22K Ω R22 33K Ω 25 26 24 23 22 21 20 19 18 17 16 15 R21 22K Ω R20 4.7K Ω R19 33K Ω R15 510K Ω R16 100K Ω R18 4.7K Ω R17 100K Ω R13 6.8K Ω R2 6.8K Ω R1 6.8K Ω 12 3 4 5 6 8 9 10 14 12 11 R4 6.8K Ω R3 6.8K Ω R14 6.8 K Ω R11 3.4K Ω R12 3.4K Ω R9 6.8K Ω R10 6.8K Ω R7 6.8K Ω R8 6.8K Ω AC97AUX_R AC97AUX_L AUXIN_R GND 7 13 R5 6.8K Ω R6 6.8K Ω AUXIN_L |
Similar Part No. - PACAC97 |
|
Similar Description - PACAC97 |
|
|
|
Link URL |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link to Datasheet | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
