Please enter a valid full or partial manufacturer part number with a minimum of 3 letters or numbers

    SA608 Search Results

    SF Impression Pixel

    SA608 Price and Stock

    Rochester Electronics LLC 2SA608NF-NPA-AT

    TRANS PNP 50V 0.15A TO92
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey 2SA608NF-NPA-AT Bulk 1,182,000 6,662
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.05
    Buy Now

    Rochester Electronics LLC 2SA608NG-NPA-AT

    TRANS PNP 50V 0.15A TO92
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey 2SA608NG-NPA-AT Bulk 85,500 6,662
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.05
    Buy Now
    2SA608NG-NPA-AT Bulk 22,500 6,662
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.05
    Buy Now

    Rochester Electronics LLC 2SA608F-NP-AA

    BIP PNP 0.1A 30V
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey 2SA608F-NP-AA Bulk 37,500 6,662
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.05
    Buy Now

    Rochester Electronics LLC 2SA608KG-NP-AA

    BIP PNP 0.1A 50V
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey 2SA608KG-NP-AA Bulk 37,500 11,539
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now

    Rochester Electronics LLC 2SA608G-SPA-AC

    BIP PNP 0.1A 30V
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey 2SA608G-SPA-AC Bulk 17,500 1,902
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.16
    Buy Now

    SA608 Datasheets (21)

    Part ECAD Model Manufacturer Description Curated Datasheet Type PDF
    SA608 Philips Semiconductors Low-voltage high performance mixer FM IF system Original PDF
    SA608 Philips Semiconductors Low voltage high performance mixer FM IF system Original PDF
    SA608D Philips Semiconductors Low voltage high performance mixer FM IF system Original PDF
    SA608D Unknown Shortform IC and Component Datasheets (Plus Cross Reference Data) Short Form PDF
    SA608D Unknown Historical semiconductor price guide (US$ - 1998). From our catalog scanning project. Historical PDF
    SA608D Philips Semiconductors Low-voltage high performance mixer FM IF system Scan PDF
    SA608DK Philips Semiconductors Low voltage high performance mixer FM IF system Original PDF
    SA608DK Unknown Historical semiconductor price guide (US$ - 1998). From our catalog scanning project. Historical PDF
    SA608DK Philips Semiconductors Low-voltage high performance mixer FM IF system Scan PDF
    SA608DK/01,112 NXP Semiconductors Low voltage high performance mixer FM IF system; Package: SOT266-1 (SSOP20); Container: Tube Original PDF
    SA608DK/01,118 NXP Semiconductors Low voltage high performance mixer FM IF system; Package: SOT266-1 (SSOP20); Container: Reel Pack, SMD, 13" Original PDF
    SA608DK/01-T NXP Semiconductors Low voltage high performance mixer FM IF system Original PDF
    SA608DK,112 NXP Semiconductors SA608 - IC 1-BAND, AUDIO TUNER, PDSO20, PLASTIC, SSOP-20, Tuner IC Original PDF
    SA608DK,118 NXP Semiconductors SA608 - IC 1-BAND, AUDIO TUNER, PDSO20, PLASTIC, SSOP-20, Tuner IC Original PDF
    SA608DK-T Philips Semiconductors Low voltage high performance mixer FM IF system Original PDF
    SA608DK-T Unknown Historical semiconductor price guide (US$ - 1998). From our catalog scanning project. Historical PDF
    SA608D-T Unknown Historical semiconductor price guide (US$ - 1998). From our catalog scanning project. Historical PDF
    SA608N Philips Semiconductors Low voltage high performance mixer FM IF system Original PDF
    SA608N Unknown Shortform IC and Component Datasheets (Plus Cross Reference Data) Short Form PDF
    SA608N Unknown Historical semiconductor price guide (US$ - 1998). From our catalog scanning project. Historical PDF

    SA608 Datasheets Context Search

    Catalog Datasheet MFG & Type PDF Document Tags

    TOKO 455KHz ceramic filter

    Abstract: 2A6597H rmc npo capacitor 0.4 .25 SFG455A3 filter operation of tank circuit in metal detector robot SA608D SA608N TOKO 455KHz filter NE605 SA608
    Text: Philips Semiconductors RF Communications Products Product specification Low voltage high performance mixer FM IF system DESCRIPTION The SA608 is a low voltage high performance monolithic FM IF system incorporating a mixer/oscillator, two limiting intermediate


    Original
    PDF SA608 20-lead 20-lead NE605. 455kHz SA608 TOKO 455KHz ceramic filter 2A6597H rmc npo capacitor 0.4 .25 SFG455A3 filter operation of tank circuit in metal detector robot SA608D SA608N TOKO 455KHz filter NE605

    LPC2148 i2c

    Abstract: BGB210S lpc2148 interfacing 2.8" TFT LCD DISPLAY BGB210 embedded c code to interface lpc2148 with sensor BGW200 TDA8932T tda8920bj NXP PN531 TDA8947J equivalent
    Text: Building blocks for vibrant media Highlights of the NXP product portfolio Building blocks for vibrant media  At NXP Semiconductors, the new company founded by Philips, we’re driven by a single purpose — to deliver vibrant media technologies that create better sensory experiences.


    Original
    PDF OT363 SC-88) LPC2148 i2c BGB210S lpc2148 interfacing 2.8" TFT LCD DISPLAY BGB210 embedded c code to interface lpc2148 with sensor BGW200 TDA8932T tda8920bj NXP PN531 TDA8947J equivalent

    CT918

    Abstract: semiconductors replacement guide ct914 TEA1100 TEA1041T UAA2050T OM-5300 TEA1101 sa571 equivalent SAA1500T
    Text: INTEGRATED CIRCUITS DATA SHEET Selection guide Replacement list 1996 Aug 14 File under Integrated Circuits, IC03 Philips Semiconductors Replacement list Selection guide REPLACEMENT/WITHDRAWAL TYPES The following type numbers were in the previous issue of this data handbook, but not in the current version:


    Original
    PDF CT914; CT918 MC3361 NE570/571/SA571 NE/SA572 NE/SA575 NE/SA576 NE/SA577 NE/SA578 NE/SA600 CT918 semiconductors replacement guide ct914 TEA1100 TEA1041T UAA2050T OM-5300 TEA1101 sa571 equivalent SAA1500T

    BF1201A

    Abstract: bf1211 dual gate mosfet bfq34 application note SA636 BFG480W BF862 AM LNA BFR10 SA676 Reliability SA612A SA614A
    Text: RF Products RF Products 241 RF Access Systems CATV RF Hybrid Amplifiers Type Number Description Frequency Range Gain dB Slope (dB) FL S11/S22 CTB XMOD CSO @Ch @Vo (dBmV) F @fmax Itot (mA) BGS67A 65 MHz, 25.5 dB gain Reverse Amplifier, 12 V 5 - 65 25 - 26


    Original
    PDF S11/S22 BGS67A BGY68 BGY66B BGY67 13MHz 900MHz SA8027 TSSOP20) 44MHz BF1201A bf1211 dual gate mosfet bfq34 application note SA636 BFG480W BF862 AM LNA BFR10 SA676 Reliability SA612A SA614A

    SKIIP 33 nec 125 t2

    Abstract: skiip 613 gb 123 ct RBS 6302 ericsson SKIIP 513 gb 173 ct THERMISTOR ml TDK 150M pioneer PAL 010a Project Report of smoke alarm using IC 555 doc SKiip 83 EC 125 T1 ericsson RBS 6000 series INSTALLATION MANUAL Ericsson Installation guide for RBS 6302
    Text: Discontinued and Superseded Stock Number History. This document contains Discontinued and Superseded Stock Number History. The information is listed in the following format: Stock Number: The original RS Stock Number of the item. Brief Description: The Invoice Description of the item.


    Original
    PDF 734TL UWEB-MODEM-34 HCS412/WM TLV320AIC10IPFB 100MB NEON250 GA-60XM7E BLK32X40 BLK32X42 SKIIP 33 nec 125 t2 skiip 613 gb 123 ct RBS 6302 ericsson SKIIP 513 gb 173 ct THERMISTOR ml TDK 150M pioneer PAL 010a Project Report of smoke alarm using IC 555 doc SKiip 83 EC 125 T1 ericsson RBS 6000 series INSTALLATION MANUAL Ericsson Installation guide for RBS 6302

    BUK2114

    Abstract: BUK2114-50SYTS saa7117 SAA7136E MPSA92 168 saa7136 buk2914-50syts TDA8920BTH bu4508dx KMZ52
    Text: Index Type number Page number 1N4148 34 1N4531 34 1N47xxA series 44 1PS10SB62 32 1PS10SB63 32 1PS10SB82 32 1PS181 36 1PS184 36 1PS193 34 1PS226 36 1PS59SB10 28 1PS59SB14 28 1PS59SB15 28 1PS59SB16 28 1PS59SB20 30 1PS59SB21 28 1PS66SB17 32 1PS66SB62 32 1PS66SB63


    Original
    PDF 1N4148 1N4531 1N47xxA 1PS10SB62 1PS10SB63 1PS10SB82 1PS181 1PS184 1PS193 1PS226 BUK2114 BUK2114-50SYTS saa7117 SAA7136E MPSA92 168 saa7136 buk2914-50syts TDA8920BTH bu4508dx KMZ52

    TRANSISTOR 187

    Abstract: RADIO fm RECEIVER IC UHF transistor MW 882 IC 740 1ghz fm modulator cellular phone amplifier power control transistor 4w TRANSISTOR BTL POWER AMPLIFIER transistor 846 audio compandor IC transistor for RF amplifier and mixer
    Text: Philips Semiconductors Semiconductors for Wireless Communications Index Types added to the range since the last issue of handbook IC17 1997 are shown in bold print PAGE I2C-bus and ADC 96 80CL580/83CL580 Low-voltage 8-bit microcontrollers with UART, 83CL781/83CL782


    Original
    PDF 80CL580/83CL580 83CL781/83CL782 BGY120A; BGY120B; BGY120D BGY122A; BGY122B BG204 BGY205 BGY206 TRANSISTOR 187 RADIO fm RECEIVER IC UHF transistor MW 882 IC 740 1ghz fm modulator cellular phone amplifier power control transistor 4w TRANSISTOR BTL POWER AMPLIFIER transistor 846 audio compandor IC transistor for RF amplifier and mixer

    Sony CXA1191M

    Abstract: philips ecg master replacement guide FZK101 YD 803 SGS FZK 101 Siemens CMC 707 am radio receiver philips ecg semiconductors master replacement guide CXA1191M ym2612 ecg semiconductors master replacement guide
    Text: Untitled HAM RADIO FILE - Various pinouts saved from the Chipdir 2010 http://www.chipdir.org/ 0512d -0512d +-\/-+ 1 -|5V in gnd in|- 24 2 -|5V in gnd in|- 23 3 -|5V in gnd in|- 22


    Original
    PDF 0512d ------------------------------------0512d z86e04 Sony CXA1191M philips ecg master replacement guide FZK101 YD 803 SGS FZK 101 Siemens CMC 707 am radio receiver philips ecg semiconductors master replacement guide CXA1191M ym2612 ecg semiconductors master replacement guide

    TDA5051AT

    Abstract: PCA9541A LM75AD SA630D
    Text: Technical Information Technical Information for Breakout Boards OM13491, OM13492, OM13493, OM13494, OM13495, OM13496, OM13497 Preliminary 1 — 9/6/2013 Document information Info Content Keywords Abstract Fm+, I2C-bus, Surface Mount Package, Breakout Board


    Original
    PDF OM13491, OM13492, OM13493, OM13494, OM13495, OM13496, OM13497 TDA5051AT PCA9541A LM75AD SA630D

    ph 4148 zener diode

    Abstract: philips zener diode ph 4148 pcf0700p Zener Diode ph 4148 PCA1318P ck2605 pcf0700p/051 philips Pca1318p on4673 Zener Diode 4148
    Text: PHILIPS SEMICONDUCTORS PRODUCT DISCONTINUATION NOTICE NUMBER DN-40 DATED DECEMBER 31, 1998 EXHIBIT 'A' PHILIPS PHILIPS PHILIPS PART NUMBER PKG PART DESCRIPTION LAST TIME LAST TIME REPLACEMENT STATUS 12 NC NUMBER BUY DATE DLVY DATE PART CODE S COMMENTS DISCONTINUED INTEGRATED CIRCUIT PRODUCTS


    Original
    PDF DN-40 74ABT126 74ABT2240 X3G-BZX84-C7V5 X3G-BZX84-C9V1 ph 4148 zener diode philips zener diode ph 4148 pcf0700p Zener Diode ph 4148 PCA1318P ck2605 pcf0700p/051 philips Pca1318p on4673 Zener Diode 4148

    CDB 447

    Abstract: CDBM455C7 CDBC455 CDBC455CX cdbm455c24 TA31141 CDBM455C CDBM455C35 MC3361 ta31132
    Text: PIEZO FILTERS HIGH PERFORMANCE CERAMIC DISCRIMINATORS FOR MOBILE COMMUNICATION EQUIPMENT CDB/CDBC/CDBM 455kHz Ceramic discriminator consists of wide band piezoelectric resonator. It is ideal for mobile communication equipment due to its small size and light weight. Standard line includes


    Original
    PDF 455kHz CDBC455C 50C56 CG01-J CDB 447 CDBM455C7 CDBC455 CDBC455CX cdbm455c24 TA31141 CDBM455C CDBM455C35 MC3361 ta31132

    murata sfeca 10.7

    Abstract: sfeca an1996 philips HP8640B sa605 AN1996 SA605D Datasheet FX-6502 AN1996 SA602A "pin compatible" SA605
    Text: RF COMMUNICATIONS PRODUCTS AN1996 Demodulating at 10.7MHz IF with the SA605/625 Alvin K. Wong Philips Semiconductors 1997 Oct 23 Philips Semiconductors Application note Demodulating at 10.7MHz IF with the SA605/625 AN1996 Author: Alvin K. Wong low voltage receivers are designed to operate at 3V while still


    Original
    PDF AN1996 SA605/625 SA626 SA624 SA608 SA607 10dBm murata sfeca 10.7 sfeca an1996 philips HP8640B sa605 AN1996 SA605D Datasheet FX-6502 AN1996 SA602A "pin compatible" SA605

    IC 2025

    Abstract: transistor 1203 low power fm audio transmitter fm mixer converter GSM Transceiver analog 1ghz modulator TM 1222 transistor for RF amplifier and mixer TM 1298 Frequency Generator 1GHz
    Text: Philips Semiconductors Semiconductors for Wireless Communications Functional index PAGE Advanced telephony services ICs PCD3316 Caller-ID on Call Waiting CIDCW receiver 537 Front-ends and Paging UAA3500HL Pager receiver 2319 SA1620 Low voltage GSM front-end transceiver


    Original
    PDF PCD3316 UAA3500HL SA1620 SA1920 SA1921 SA2420 45GHz SA602A SA611 SA612A IC 2025 transistor 1203 low power fm audio transmitter fm mixer converter GSM Transceiver analog 1ghz modulator TM 1222 transistor for RF amplifier and mixer TM 1298 Frequency Generator 1GHz

    5.5MHz ceramic Filter

    Abstract: TOKO 455KHz ceramic filter ceramic filter 5.5mhz filter 455khz Toko variable coil 7mm 455KHz IF npo 22j Ceramic filter 455khz Murata 455KHz TOKO ceramic filter NE605
    Text: Product specification Philips Semiconductors Low-voltage high performance mixer FM IF system_ DESCRIPTION The SA608 is a low voltage high performance monolithic FM IF system incorporating a mixer/oscillator, two limiting intermediate frequency amplifiers, quadrature detector,


    OCR Scan
    PDF SA608 SA608 20-lead NE605. 455kHz 5.5MHz ceramic Filter TOKO 455KHz ceramic filter ceramic filter 5.5mhz filter 455khz Toko variable coil 7mm 455KHz IF npo 22j Ceramic filter 455khz Murata 455KHz TOKO ceramic filter NE605

    Untitled

    Abstract: No abstract text available
    Text: Philips Semiconductors RJF Communications Products Product specification Low voltage high performance mixer FM IF system DESCRIPTION The SA608 is a low voltage high performance monolithic FM IF sysiem incorporating a mixer/osciilator, two limiting intermediate


    OCR Scan
    PDF SA608 SA608 20-lead NE605. 455kHz

    toko 303LN

    Abstract: n16k
    Text: Product specification Philips Semiconductors Low-voltage high performance mixer FM IF system_ DESCRIPTION The SA608 is a low voltage high performance monolithic FM IF system incorporating a mixer/oscillator, two limiting intermediate frequency amplifiers, quadrature detector,


    OCR Scan
    PDF SA608 20-lead NE605. SA608 toko 303LN n16k

    transistor 20107

    Abstract: transistor dk 50 PCD5042 bfg520w vco application note BFG591 Application Notes DK 51* transistor bfg520 antenna preamplifier BP547 bfg135 application note MPSH10 small amplifier
    Text: TARGET SYSTEMS PRODUCTS Function Type Description Cellular N AMPS /{E> TACS IS-54/-136 TDMA IS—95 CDMA Cordless GSM DCS1800 PCS PDC RF Amplifiers { SA5200 CTO CT1 SS X X Wireless Data DECT PHS 802.11 CDPD X X Gain block-1 GHZ PAGERS RF Front End SA611 1 GHz low voli LNA and mixer


    OCR Scan
    PDF SA5200 SA611 SA2420 SA621 SA1620 SA1921 UAA2073 UAA2077AM UAA2077BM UAA2077CM transistor 20107 transistor dk 50 PCD5042 bfg520w vco application note BFG591 Application Notes DK 51* transistor bfg520 antenna preamplifier BP547 bfg135 application note MPSH10 small amplifier

    BGY46B

    Abstract: TRANSISTOR regulator fm 513 diode piezoelectric mobile charger Analog Voice scrambler dtmf interface with microcontroller DTMF mobile fm operational amplifier SA612 All Microphone
    Text: Philips Semiconductors Semiconductors for Telecom systems Alphanumeric index page BGY46A UHF power amplifier module 42 BGY46B UHF power amplifier module 43 BGY47A UHF power amplifier module 44 BGY95A/B UHF amplifier module 45 BGY96A/B UHF amplifier module


    OCR Scan
    PDF BGY46A BGY46B BGY47A BGY95A/B BGY96A/B BGY110D/E/F/G BR211 BS107 BS108 BS170 TRANSISTOR regulator fm 513 diode piezoelectric mobile charger Analog Voice scrambler dtmf interface with microcontroller DTMF mobile fm operational amplifier SA612 All Microphone

    transistor D 982

    Abstract: TDA7050 All Microphone tda7052 ic POCSAG Receiver piezoelectric mobile charger "true Logarithmic Amplifier" TDA7052 Audio power amplifier IC tda7052
    Text: Philips S em iconductors Semiconductors for Telecom systems Functional index page SPEECH/TRANSMISSION CIRCUITS PCA1070 programmable analog CMOS transmission IC 339 TEA1060/1061 versatile telephone transmission circuits with dialler interface; TEA1060: low impedance input for dynamic and magnetic


    OCR Scan
    PDF PCA1070 TEA1060/1061 TEA1060: TEA1061: BGY46A BGY46B BGY47A BGY95A/B BGY96A/B BGY110D/E/F/G transistor D 982 TDA7050 All Microphone tda7052 ic POCSAG Receiver piezoelectric mobile charger "true Logarithmic Amplifier" TDA7052 Audio power amplifier IC tda7052

    CT914

    Abstract: philips audio amplifier ic guide UMA1000LT P-Channel RF Amplifier Philips Semiconductors Selection Guide All Microphone CT918 "true Logarithmic Amplifier" TDA7050 bs107 transistor
    Text: Philips Semiconductors Selection guide Functional index PAGE SPEECH/TRANSMISSION CIRCUITS PCA1070 programmable analog CMOS transmission IC TEA1060/1061 versatile telephone transmission circuits with dialler interface; 304 TEA1060: low-impedance input for dynamic and magnetic microphones;


    OCR Scan
    PDF PCA1070 TEA1060/1061 TEA1060: TEA1061: TEA1062/A TEA1064A TEA1064B TEA1065 TEA1066T TEA1067 CT914 philips audio amplifier ic guide UMA1000LT P-Channel RF Amplifier Philips Semiconductors Selection Guide All Microphone CT918 "true Logarithmic Amplifier" TDA7050 bs107 transistor

    2SB415

    Abstract: 2SB 710 2sc1061 2sd524 2sb504 HD68P01 2sb507 2sa762 2sc827 2SC1362
    Text: V W Ki * 91 ^ # b h 7 >->" X ? i, t ^ X M X V M W X M £ (E I A J i: 2 S W Z x R m z t i S , x t iz J :'), ? 4000H£< * ^ t i X t 4 ', ^ i t . : w ° n l l ±, Z iih J M I1 L -C A J t t , g 4 - ? 4 M # c o ( , c o T ' & , I W H H c o f ^ 6 i> w 1, ^ & >) b ') £ i ~


    OCR Scan
    PDF 4000HÂ 2SB415 2SB 710 2sc1061 2sd524 2sb504 HD68P01 2sb507 2sa762 2sc827 2SC1362

    transistor 647

    Abstract: amplifier TRANSISTOR 14 GHZ transistor for RF amplifier and mixer amplifier TRANSISTOR 12 GHZ audio compandor IC audio ic 1026 line AMPLIFIER satellite philips dect 1331 transistor sa636
    Text: Philips Semiconductors Semiconductors for Wireless Communications Funchonal mdex Types added to the range since the last issue of handbook IC17 1997 are shown in bold print PAGE Front-ends SA601 1GHz low voltage LNA and mixer 886 SA602A Double-balanced mixer and oscillator


    OCR Scan
    PDF SA601 SA602A SA611 SA612A SA620 SA621 SA1620 SA1920 SA1921 SA2420 transistor 647 amplifier TRANSISTOR 14 GHZ transistor for RF amplifier and mixer amplifier TRANSISTOR 12 GHZ audio compandor IC audio ic 1026 line AMPLIFIER satellite philips dect 1331 transistor sa636

    A571 TRANSISTOR

    Abstract: BATTERY LEVEL INDICATOR CT918 transistor 1247 IC NE 555 UMA1018 UMA1000LT ic 1 ne 555 All Microphone SA612
    Text: P hilips Sem iconductors Selection guide Alphanumerical index ALPHANUMERIC INDEX PAGE P 80C552/(P)83C552 single-chip 8-bit microcontroller 49 (P)80CL31/(P)80CL51 low-voltage single-chip 8-bit microcontroller 54 (P)80CL410/(P)83CL410 low-voltage/low-power single chip 8-bit microcontroller with l2C-bus


    OCR Scan
    PDF 80C552/ 83C552 80CL31/ 80CL51 80CL410/ 83CL410 80CL580/ 83CL580 83/87L51 83C654 A571 TRANSISTOR BATTERY LEVEL INDICATOR CT918 transistor 1247 IC NE 555 UMA1018 UMA1000LT ic 1 ne 555 All Microphone SA612

    transistor MW 882

    Abstract: transistor for RF amplifier and mixer uhf range fm modulator N-CHANNEL ENHANCEMENT MODE HIGH VOLTAGE POWER MOS wireless lcd receiver Philips 787 receiver transistor for RF amplifier audio compandor IC mos transistor ecl prescaler
    Text: Philips Semiconductors Semiconductors for Wireless Ä Communications , , Index Types added to the range since the last issue of handbook IC17 1997 are shown in bold print PAGE 80CL580/83CL530 Low-voltage 8-bit microcontrollers with UART, l2C-bus and ADC


    OCR Scan
    PDF 80CL580/83CL530 33CL781/83CL782 BGY120A; BGY1208; BGY120D BGY122A; BGY122B BG204 BGY205 BGY206 transistor MW 882 transistor for RF amplifier and mixer uhf range fm modulator N-CHANNEL ENHANCEMENT MODE HIGH VOLTAGE POWER MOS wireless lcd receiver Philips 787 receiver transistor for RF amplifier audio compandor IC mos transistor ecl prescaler