SA2104/SA2104S 3V AM/FM+MPX TUNER IC(FOR DIGITAL TUNING SYSTEM) DESCRIPTION The SA2104/SA2104S are single-chip tuner ICs that incorporate FM/AM and MPX circuits, which are designed for portable radios and 3V headphone radios. SDIP-24-300-1.778 The SA2104/SA2104S are suitable for digital tuning system applications. FM local oscillation voltage is set up low relativity, for NEW FCC. FEATURES SSOP-24-300-0.65 * Operating supply voltage range: VCC=1.8~10V (Tamb=25°C) * For NEW FCC * FM/AM and MPX integrated in a single-chip. * Build in FM/AM IF count buffer. FM: 1.3375MHz (1/8 dividing) AM: 450kHz * Build in mute circuit for IF count output according to field strength. ORDERING INFORMATION Part No. Package SA2104 SDIP-24-300-1.778 SA2104S SSOP-24-300-0.65 * Build in FM MPX VCO circuit * Build in FM/AM OSC buffer output for DTS applications. * Build in AM low cut circuit * Build in stereo indicator. * Low supply current. (VCC=3V, Tamb=25°C) ICCq (FM)=11.0mA (Typ.) ICCq (AM)=7.5mA (Typ.) BLOCK DIAGRAM HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:2.0 2004.07.31 Page 1 of 13 SA2104/SA2104S MAXIMUM RATINGS (Tamb=25°C) Parameter Symbol Rating Unit Maximum Supply Voltage VCC 14 V Indicator Drive Current ILED 10 mA Indicator Voltage VLED 8 V Power Dissipation SA2104 1200 PD (note) SA2104S mW 500 Operating Temperature Topr -20~+70 °C Storage Temperature Tstg -40~+125 °C Note: Derated above Tamb=25°C in the proportion of 9.6mW/°C for SA2104 of 4mW/°C for SA2104S. ELECTRICAL CHARACTERISTICS (Unless otherwise specified, Tamb=25°C, VCC=3V, F/E : f=98 MHz, fm=1 kHz ,FM IF : f=10.7 MHz, ∆f =±22.5 kHz, fm= 1 kHz . AM : f=1 MHz, MOD=30%, fm=1 kHz. MPX: fm=1kHz) Parameter Symbol Quiescent Current Input Limiting Voltage F/E Local OSC Input Limiting Voltage Max. -- 11.0 18 ICC(AM) VIN=0, AM mode -- 7.5 14 -- 10 -- 23 35 -- 35 38 47 Vin(lim) FM Vin(lim) IF Test Condition VIN=60 dBµV EMF -3dB limiting FOSC=108.7MHz VIN=80dBµV EMF -3dB limiting Unit mA dBµV EMF mVrms dBµV EMF Recovered Output Voltage VOD VIN=80dBµV EMF 200 270 300 mVrms Signal To Noise Ratio S/N VIN=80dBµV EMF -- 75 -- dB Total Harmonic Distortion THD VIN=80dBµV EMF -- 0.3 -- % AMR VIN=80dBµV EMF -- 60 -- dB 1.3373 1.3375 1.3377 MHz 200 260 -- mVp-p SW7: ON 40 45 50 FM AM Rejection Ration IF Count Output Frequency IF Count Output Voltage IF Count Output Sensitivity AM Typ. VIN=0, FM mode BUFFER VOSC (buff) OUTPUT Voltage IF Min. ICC(FM) fIF (FM) VIF (FM) IF sens (FM) VIN=80dBµV EMF SW7: ON VIN=80dBµV EMF SW7: ON dBµV EMF Gain GV VIN=27dBµV EMF 20 38 70 mVrms Recovered Output Voltage VOD VIN=60dBµV EMF 60 90 120 mVrms Signal To Noise Ratio S/N VIN=60dBµV EMF -- 41 -- dB Total Harmonic Distortion THD VIN=60dBµV EMF -- 0.7 -- % fOSC=1.45MHz 44 66 -- mVrms VIF (AM) VIN=60dBµV EMF, SW7: ON 200 250 -- mVp-p 38 43 48 Local OSC Buffer Output VOSC (buff) Voltage IF Count Output Voltage IF Count Output Sensitivity AM IF sens (AM) SW7: ON dBµV EMF (TO be continued) HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:2.0 2004.07.31 Page 2 of 13 SA2104/SA2104S (Continued) Parameter Symbol Pin (17) Output Resistance Min. Typ. Max. FM mode -- 0.75 -- AM mode -- 15.5 -- RIN -- -- 55 -- kΩ ROUT -- -- 5 -- kΩ -- 700 -- mVrms R17 Input Resistance Output Resistance Max. Composite MPX Monaural Stereo THD (Monaural) THD (Stereo) kΩ THD=3% Sep Harmonic Distortion SW3: LPF ON fm=1kHz, (Stereo) Separation Unit L+R=90%, P=10%, Signal Vin MAX Input Voltage Total Test Condition L+R=180mVrms, fm=100Hz -- 44 -- P=20mVrms fm=1kHz 35 44 -- SW3: LPF ON fm=10kHz -- 44 -- -- 0.3 -- Vin=200mVrms dB % L+R=180mVrms, P=20mVrms SW3: LPF ON -- 0.3 -- Voltage Gain GV Vin=200mVrms -2.7 -1.2 0.2 dB Channel Balance C.B. Vin=200mVrms -1.5 0 1.5 dB -- 10 14 5 8 -- -- 2 -- mVrms Stereo LED Sensitivity ON VL (ON) OFF VL (OFF) Stereo LED Hysteresis VH Pilot input(19KHZ) To LED turn off from LED turn on mVrms Capture Range C.R. P=15mVrms -- ±8 -- % Signal To Noise Ratio S/N Vin=200mVrms -- 80 -- dB MUTE Vin=200mVrms -- 80 -- dB Muting Attenuation COIL DATA Coil No. L1 FM RF Test Freq. 100MHz L Co (µH) (pF) -- -- Qo 79 Turns 1-2 -- 2-3 -- 1-3 -- Wire 1-4 2 4-6 (mm∅) -- 0.16UEW 1 2 L2 FM OSC 100MHz -- T1 AM OSC 796kHz 268 T2 AM IFT 455kHz -- -- 76 -- -- -- 65 19 470 60 -- HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn -- 2 -- 0.16UEW 95 -- -- -- 0.05UEW -- 109 -- 7 0.05UEW REV:2.0 2004.07.31 Page 3 of 13 SA2104/SA2104S DET OUT MPX IN LPF1 LPF2 QUAD R-OUT L-OUT IF REQ GND AGC ST LED FM IF IN AM OSC VCC OSC OUT FM OSC MIX OUT AM IF IN AM RFIN RF VCC FM RFIN AM LOW CUT FM RFOUT RF GND PIN CONFIGURATION PIN DESCRIPTIONS AND QUIESCENT VOLTAGE Pin No. Symbol Pin description 1 RF GND GND for FM OSC stage 2 FM-RFin FM-RF input pin. AM AM low frequency cut down 3 LOW CUT pin 4 MIX OUT AM/FM mixer output pin. 5 VCC VCC for AM, FM IF, FM MPX stage Internal circuit -- -- Pin voltage (Typ.) (V) AM FM 0 0 0 0.8 1.0 -- 3.0 0.5 3.0 3.0 (To be continued) HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:2.0 2004.07.31 Page 4 of 13 SA2104/SA2104S (Continued) Pin No. Symbol Pin description Internal circuit Pin voltage (Typ.) (V) AM FM 6 AMIF IN AMIF input pin. 2.3 2.5 7 FMIF IN FMIF input. 3.0 3.0 8 GND 0 0 9 AGC Auto gain control pin. 0 0 10 QUAD FM Quad 2.5 2.2 11 R-OUT Right/Left 12 L-OUT port. 1.2 1.2 0 2.2 GND for AM, FM IF, FM MPX stage. channel output -- LPF terminal for phase detector 13 LPF2 Bias terminal for AM/FM SW circuit V13=GND→AM V13=OPEN→FM (To be continued) HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:2.0 2004.07.31 Page 5 of 13 SA2104/SA2104S (Continued) Pin No. Symbol Pin description Internal circuit Pin voltage (Typ.) (V) AM FM 0.7 2.4 LPF terminal for 14 LPF1 synchronous detector VCO stop terminal V14=GND→VCO STOP MPX IN MPX input pin. 0.7 0.7 16 DET OUT FM/AM detector output pin. 1.0 0.9 17 IF REQ AM/FM IF output pin. -- -- 18 ST LED Stereo indicator. -- -- 19 OSC OUT AM/FM oscillator output pin. 2.8 2.7 20 AM OSC AM oscillator input pin. 3.0 3.0 21 FM OSC FM oscillator input pin. 3.0 3.0 400 15 (To be continued) HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:2.0 2004.07.31 Page 6 of 13 SA2104/SA2104S (Continued) Pin Symbol No. Pin description 22 AM RF IN AM RF input pin. 23 RF VCC (VCC for FM OSC stage) 24 FM RF OUT FM RF output pin. Internal circuit Pin voltage (Typ.) (V) -- AM FM 3.0 3.0 3.0 3.0 3.0 3.0 FUNCTION DESCRIPTION Application note: 1. AM low-cut circuit When pin3 is open, no AF signal can pass through the AMP stage because of the common mode. When the value of C3 that connected to pin3 is over 1uF, all AF signal can pass through the AMP stage. The cut-off frequency fL is determined by the internal resistance 22kΩ (Typ.) and the external capacitor C3 as below: 1 fL = 2x 3 x 22 x 10 x C3 (Hz) It is possible to reduce the recovered output level at AM mode, by additional resistance between the pin (3) and GND line. 2. FM detection circuit Recommended circuit and recommended coil are as follows. (Test frequency is 10.7M) HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:2.0 2004.07.31 Page 7 of 13 SA2104/SA2104S VCC Q=45 51pF 15pF 10 3. FM/AM switch and forced monaural switch. mode Vpin13 Vpin14 AM LOW (Vth=0.2V(Typ.), Ith 30µA(Typ.)) / FM OPEN / STEREO / OPEN FORCED MONAURAL / LOW(Vth=0.2V(Typ.), Ith 30µA(Typ.)) TEST CIRCUIT HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:2.0 2004.07.31 Page 8 of 13 SA2104/SA2104S ELECTRICAL CHARACTERISTICS CURVES HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:2.0 2004.07.31 Page 9 of 13 Http: www.silan.com.cn HANGZHOU SILAN MICROELECTRONICS CO.,LTD TOTAL HARMONIC DISTORTION THD (%) SEPARATION Sep. (dB) IF COUNT OUTPUT VOLTAGE VIF (mVp-p) IF COUNT SENSITIVITY IFsens (dB V EMF) RECOVERED OUTPUT VOLTAGE VOD (dB) TOTAL HARMONIC DISTORTION THD(%) RECOVERED OUTPUT VOLTAGE VOD(mVrms) IF COUNT SENSITIVITY IF sens (dB V EMF) AM OSC BUFFER OUTPUT VOLTAGE VOSC (buff) AM (mVrms) IF COUNT OUTPUT VOLTAGE VIF (mVp-p) TOTAL HARMONIC DISTORTION THD(%) RESPONSE (dB) SUPPLY CURRENT ICCQ (mA) RECOVERED OUTPUT VOLTAGE VOD (dB) SA2104/SA2104S ELECTRICAL CHARACTERISTICS CURVES (Continued) REV:2.0 2004.07.31 Page 10 of 13 SA2104/SA2104S CHARACTERISTICS CURVES (Continued) HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:2.0 2004.07.31 Page 11 of 13 SA2104/SA2104S PACKAGE OUTLINE SDIP-24-300-1.778 UNIT: mm SSOP-24-300-0.65 UNIT: mm HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:2.0 2004.07.31 Page 12 of 13