AC97 PC AUDIO RESITOR NETWORK SW AC97 PAC AC97 pin to pin compatible, Stable resistor network Signal conditioning and gain setting resistors for all standard audio functions Low noise thin film resistors 1% match Gain modification by changing resistors externally Better than 90 dB Inter-channel and channel-to-channel crosstalk Analog audio system for Pentium II Class personal computers, used in conjunction with Audio Codec, CS4297, or AD1819A The SWAC97 provides the components necessary for signal conditioning of analog audio inputs for an AC97 compliant Codec as well as gain setting resistors for headpfone and microphone amplifiers. Since analog signal levels can be as high as 2 Vrms, the SWAC97 provides 6 dB of attenuation (to 1 Vrms) for LINE-IN, AUX, and CD inputs. The CD line level inputs of the SWAC97 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 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 resistor for the headphone and microphone amplifiers. The SWAC97 provides exceptional Inter-channel and channel-to-channel crosstalk attenuation necessary for high quality audio. These products are manufactured using advanced thin film technologies including ultra-stable and self passivating Tantalum Nitride resistors, gold interconnect metalization and reliable MNOS capacitors to achieve excellent uniformity, performance and reliability. In die form, these products are ideal for hybrid and multichip module applications. In package form, these products are the best solution where space and weight are a concern. SEMICONDUCTOR-THIN FILM MANUFACTURING PROCESS DESCRIPTION Integrated passive networks are manufactured using advanced thin film technologies including ultra -stable and self passivating Tantalum Nitride resistors, gold interconnect metallization and reliable MNOS capacitors to achieve excellent uniformity, performance and reliability. Thin film resistor technology is the preferred solution for all applications that require low noise, long term stability and excellent performance at very high frequencies. Semiconwell employs proprietary thin film technologies for deposition of a wide range of sheet resistance films from 1W/sq to 10,000W/sq. All Semiconwell's products are available in die form and as KGD, known good die and are ideal for high reliability hybrid and multi chip module applications. Besides thin film resistors, Semiconwell integrates capacitors, Schottky diodes, Zener diodes and transistors. Integrated passive and active networks are manufactured using Semiconwell's in house high reliability semiconductor manufacturing processes. All semiconductor devices employ precision doping via ion implantation, silicon nitride junction passivation, platinum silicided contacts and gold interconnect metallization for best performance and reliability. MNOS capacitors and Tantalum Nitride resistors are easily integrated with Schottky diodes to provide complete standard and custom RCD solutions. In die form, these products are ideal for hybrid and multi chip module applications. In packaged form, these products are the best solution where space and weight are a concern.

 
 
SEMICONWELL
Integrated Passive Networks
  AC97 PC AUDIO RESITOR NETWORK
SW AC97
 
 

FEATURES
APPLICATIONS
SCHEMATIC
Stable resistor network.
Signal conditioning and gain setting resistors for all standard audio functions.
Low noise thin film resistors ± 1% match.
Gain modification by changing resistors externally.
Better than 90 dB Inter-channel and channel-to-channel crosstalk
Paralel termination.
Analog audio system for Pentium II Class personal computers, used in conjunction with Audio Codec, CS4297, or AD1819A.
schematic

SHORT PRODUCT APPLICATION NOTE
The SWAC97 provides the components necessary for signal conditioning of analog audio inputs for an AC97 compliant Codec as well as gain setting resistors for headpfone and microphone amplifiers. Since analog signal levels can be as high as 2 Vrms, the SWAC97 provides 6 dB of attenuation (to 1 Vrms) for LINE-IN, AUX, and CD inputs. The CD line level inputs of the SWAC97 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 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 resistor for the headphone and microphone amplifiers. The SWAC97 provides exceptional Inter-channel and channel-to-channel crosstalk attenuation necessary for high quality audio. These products are manufactured using advanced thin film technologies including ultra-stable and self passivating Tantalum Nitride resistors, gold interconnect metalization and reliable MNOS capacitors to achieve excellent uniformity, performance and reliability. In die form, these products are ideal for hybrid and multichip module applications. In package form, these products are the best solution where space and weight are a concern.

SEMICONDUCTOR-THIN FILM MANUFACTURING PROCESS DESCRIPTION
Integrated passive networks are manufactured using advanced thin film technologies including ultra -stable and self passivating Tantalum Nitride resistors, gold interconnect metallization and reliable MNOS capacitors to achieve excellent uniformity, performance and reliability. Thin film resistor technology is the preferred solution for all applications that require low noise, long term stability and excellent performance at very high frequencies. Semiconwell employs proprietary thin film technologies for deposition of a wide range of sheet resistance films from 1 W/sq to 10,000 W/sq. All Semiconwell's products are available in die form and as KGD, known good die and are ideal for high reliability hybrid and multi chip module applications. Besides thin film resistors, Semiconwell integrates capacitors, Schottky diodes, Zener diodes and transistors. Integrated passive and active networks are manufactured using Semiconwell's in house high reliability semiconductor manufacturing processes. All semiconductor devices employ precision doping via ion implantation, silicon nitride junction passivation, platinum silicided contacts and gold interconnect metallization for best performance and reliability. MNOS capacitors and Tantalum Nitride resistors are easily integrated with Schottky diodes to provide complete standard and custom RCD solutions. In die form, these products are ideal for hybrid and multi chip module applications. In packaged form, these products are the best solution where space and weight are a concern.

RESISTOR SPECIFICATIONS
Capacitance [pF] Tolerance q [%] Power Rating [mW]
5 5 100mW@70°C/channel

Stresses beyond listed absolute maximum ratings may cause permanent damage to the device.

STANDARD SPECIFICATIONS
R1,R2,R3,R4,R5,R6,R7,R8,R9,R10,R13,R14 6.8KW
R11,R12 3.4KW
R15 510KW
R16,R17 100KW
R18,R20 4.7KW
R21,R23 22KW
R22,R24 33KW
Absolute tolerance(0°C to 70°C) ±5%
Matching tolerance ±1%
Interchannel crosstalk (left- right)* >-90dB@1KHz
Channel-to-channel crosstalk * >-90dB@1KHz
Operating temperature range -55°C to 125°C
Power rating/resistor 100mW
Temperature Coefficient of Resistor (TCR) ±150 ppm
Tracking TCR inner-channel resistors (L, R) ±25 ppm
Max package power rating (70 °C) 1.00%
Capacitance <5pF
* Guaranteed by design

PIN OUT
PIN# FUNCTION PIN# FUNCTION
1 Line In Left 15 CD Left
2 Line In Right 16 CD GND
3 AC97 Line Right 17 CD Right
4 AC97 Line Left 18 MIC AMP OUT
5 GND 19 MIC-
6 AC97MIC 20 MIC+
7 GND 21 MIC IN
8 AC97CD Right 22 GND
9 AC97CD GND 23 IN2
10 AC97CD Left 24 AMP2-
11 AC97AUX Right 25 AMP OUT2
12 AC97AUX Left 26 IN1
13 AUXIN Left 27 AMP1
14 AUXIN Right 28 AMP OUT1

GENERAL DIE INFORMATION
Substrate Thickness (mils) Die size (mils) Bonding pads Backside metal
SiO2 / Silicon 10±2 90 x 60 ±3 4x4 mils, 3mm thick, 99.99% electroplated gold with a TiW barrier Au/Si compatible with eutectic and conductive epoxy die attach.
All Semiconwell products are available in die form for chip and wire hybrid circuits and multi chip modules applications. Typical delivery for standard die products is 3-4 weeks ARO. For Chip Scale Packaged (CSP) devices consult factory for an update on availability of certain products.

CONDUCTORS RESISTORS BACKSIDE METAL
The bonding pads of the resistors are 3µm thick, 99.99% electroplated gold with a TiW barrier that withstands 30 min at 400°C in air without loss of adhesion. Ultra stable TaN with low TCR <75ppm/C typical. For Rsq<10W/sq and Rsq>500W/sq, resistive material is proprietary. Power rating/resistor max 100mW for R<1KW and 25mW for R>1KW. Standard tolerance is ±5%. Backside of the die is metallized with standard Si/Au compatible with eutectic and epoxy die attach. Custom metallizations are available upon special request for die products only.

DIE LAYOUT PACKAGE PIN OUT
layout schematic
Vin=3,4,5,6,11,12,13,14
Vss=die backside
Vss=1,8,9,16
Vdd=2,7,10,15

STANDARD PRODUCTS ORDERING INFORMATION

SW PART# QSOP-28 TSSOP-28 BARE DIE
SWAC97 SWAC97-28QS SWAC97-28TS SWAC97-28BD

SW PART # QUANTITY QSOP-28 U/P($) TSSOP-28 U/P($) BARE DIE U/P($)
SWAC97   5,000pc -28QS   -28TS   -28BD  
SWAC97 10,000pc -28QS   -28TS   -28BD  
List prices are for standard products, available from stock. List prices for other quantities and tolerances are available on line through Instant Quote. For standard products available from stock, there is a minimum line item order. For custom products please inquire by contacting SEMICONWELL technical sales. No rights can be derived from pricing information provided on this website. Such information is indicative only, is showed for budgetary use only and subject to change by SEMICONWELL at any time and without notice.
For products sold as bare tested die or known good die KGD, minimum order is 5000pc. Dice are 100% functional tested, visual inspected and shipped in antistatic waffle packs. For special die level KGD requirements, different packaging or custom configurations, contact sw_sales@semiconwell.com

INSTANT QUOTE
Semiconwell P/N Quantity E-mail    
 

Delivery for packaged Resistor networks standard products is 4-6 weeks ARO. Certain items may be available from stock. For standard products available from stock, there is a minimum line item order of $250.0. Inventory is periodically updated. For 2500pc or larger orders, all surface mount packaged devices are shipped in tape on reel (T/R). For smaller quantities, it may vary. Samples are available only for customers that have issued firm orders pending qualification of product in a particular application. On line Orders have to be verified, accepted and acknowledged by Semiconwell sales department in writing before, becoming non cancelable binding contracts.

Semiconwell guarantees continuous supply and availability of any of it's standard products provided minimum order quantities are met.

SEMICONWELL has made every effort to have this information as accurate as possible. However, no responsibility is assumed by SEMICONWELL for its use, nor for any infringements of rights of third parties which may result from its use. SEMICONWELL reserves the right to revise the content or modify its product line without prior notice. SEMICONWELL products are not authorized for and should not be used within support systems which are intended for surgical implants into the body, to support or sustain life, in aircraft, space equipment, submarine, or nuclear facility applications without the specific written consent.

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Last update: July 18, 2013
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