SA2111C 3V AM/FM +MPX TUNER IC(FOR MECHANICAL TUNING) DESCRIPTION The SA2111C is AM/FM single-chip tuner IC, which is designed for portable radios and 3V head phone radios. It is suitable for digit tuning system, and FM local oscillation voltage is set up low relativity, for NEW SSOP-24-300-0.65 SSOP-24-300-1.0 SOP-24-375-1.27 SDIP-24-300-1.778 FCC. FEATURES * Operating supply voltage range: VCC=1.8~7V (Tamb=25°C) * AM detector coil, FM IFT, IF coupling condenser are not needed. * For adopting ceramic discriminator, it is not necessary to adjust the FM quad detector circuit. * Built-in FM MPX VCO circuit * Built-in varactor diode for AFC * Built-in AM low cut circuit * Low supply current. (VCC=3V, Tamb=25°C) ICCq(FM)=9.0mA (Typ.) ICCq(AM)=5.0mA (Typ.) Note: Handle with care to prevent devices from deteriorations by ESD. ORDERING INFORMATION Device Package SA2111C SDIP-24-300-1.778 SA2111CS SSOP-24-300-0.65 SA2111CA SOP-24-375-1.27 SA2111CB SSOP-24-300-1.0 BLOCK DIAGRAM HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn Rev: 1.1 2005.10.26 Page 1 of 10 SA2111C ABSOLUTE MAXIMUM RATINGS(Tamb=25°C) Characteristic Symbol Value Unit Supply Voltage VCC 8 V LED Current ILED 10 mA LED Voltage VLED 8 V PD (note) 1200 mW Operating Temperature Topr -20~+70 °C Storage Temperature Tstg -40~+125 °C Power Dissipation Note: Derated above Tamb=25°C in the proportion of 9.6mW/°C for SA2111C. 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) Characteristics Supply Current F/E Input Limiting Voltage Local OSC Voltage Input Limiting Voltage FM IF Min. Typ. Max. ICC(FM) Vin=0, FM mode -- 9 12.5 ICC(AM) Vin=0, AM mode -- 5 7.5 Vin(lim) -3dB limiting -- 7 -- FOSC=108.7MHz -- 105 -- 35 40 45 VOSC Vin(lim) IF -3dB limiting Unit mA dBµV EMF mVrms dBµV EMF VOD Vin=80dBµV EMF 90 105 120 mVrms Signal To Noise Ratio S/N Vin=80dBµV EMF -- 65 -- dB Total Harmonic Distortion THD Vin=80dBµV EMF -- 0.2 -- % AM Rejection Ration AMR Vin=80dBµV EMF -- 50 -- Db IL=1mA 40 45 50 Soft Mute Attenuation VL EMF Vin=0 -- 20 -- dB Vin=25dBµV EMF 18 35 70 mVrms Recovered Output Voltage VOD Vin=60dBµV EMF 50 70 90 mVrms Signal To Noise Ratio S/N Vin=60dBµV EMF -- 41 -- dB Total Harmonic Distortion THD Vin=60dBµV EMF -- 0.7 -- % IL=1mA 23 28 33 LED On Sensitivity MUTE dBµV GV Gain VL -- 0.75 -- -- 15.5 -- RIN -- -- 55 -- kΩ ROUT -- -- 5 -- kΩ -- 700 -- mVrms Input Resistance Max. Composite Signal Input Voltage EMF FM mode R18 Output Resistance dBµV AM mode Pin (18) Output Resistance MPX Test Condition Recovered Output Voltage LED On Sensitivity AM Symbol Vin MAX L+R=90%, P=10%, fm=1Khz, (STEREO) THD=3% kΩ (To be continued) HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn Rev: 1.1 2005.10.26 Page 2 of 10 SA2111C (Continued) Characteristics Separation Symbol Sep MPX Total Monaural Harmonic Distortion Stereo Voltage Gain Channel Balance Stereo LED MPX Sensitivity L+R=180mVrms, P=20mVrms Min. Typ. Max. fm=100Hz -- 45 -- fm=1kHz 35 45 -- -- 45 -- -- 0.3 -- -- 0.3 -- fm=10kHz THD Vin=200mVrms (MONAURAL) THD L+R=180mVrms, P=20mVrms (STEREO) Unit dB % GV Vin=200mVrms -2.5 -1 0.5 dB C.B. Vin=200mVrms -1.5 0 1.5 dB -- 8 12 3 6 -- -- 2 -- mVrms ON VL(ON) OFF VL(OFF) Stereo LED Hysteresis Test Condition VH Pilot input To LED turn off from LED turn on mVrms Capture Range C.R. P=20mVrms -- ±8 -- % Signal To Noise Ratio S/N -- -- 80 -- dB PIN CONFIGURATION PIN DESCRIPTION Pin No. Symbol Description 1 FM-RF IN FM-RF INPUT 2 RF GND GND for FM RF, FM OSC stage 3 AM LOW CUT AM LOW FREQUENCY CUT DOWN 4 MIX OUT FM & AM MIX OUTPUT 5 AGC AUTOMATIC GAIN CONTROL 6 VCC VCC for AM, FM IF, FM MPX stage 7 AM IF IN AM IF INPUT (To be continued) HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn Rev: 1.1 2005.10.26 Page 3 of 10 SA2111C (Continued) Pin No. Symbol Description 8 FM IF IN FM IF INPUT 9 GND GND for AM, FM IF, FM MPX stage 10 TUN LED tuning LED 11 ST LED Stereo LED 12 QUAD FM QUAD. Detector 13 R-OUT R-channel Output 14 L-OUT L-channel Output 15 LPF1 • LPF terminal for synchronous detector • VCO stop terminal V15=VCC→VCO STOP • LPF terminal for phase detector 16 LPF2 • Bias terminal for AM/FM SW circuit V16=VCC→AM V16=OPEN→FM 17 MPX IN MPX INPUT 18 DET OUT FM & AM DETECT OUTPUT 19 AFC AUTO FREQUENCY CONTROL 20 AM OSC AM OSC 21 FM OSC FM OSC 22 RF VCC VCC for FM OSC stage 23 FM RF OUT FM RF OUTPUT 24 AM RF IN AM RF INPUT 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. HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn Rev: 1.1 2005.10.26 Page 4 of 10 SA2111C 2. FM detection circuit The detection coil can take replace the ceramic discriminator in the FM detection circuit. Recommended circuit and recommended coil are as follows. In this case, please take care that Vin (lim) falls a little. TEST CIRCUIT (1) HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn Rev: 1.1 2005.10.26 Page 5 of 10 SA2111C TEST CIRCUIT (2) COIL DATA Coil No. L1 FM RF Test L Co Freq. (µH) (Pf) -- -- 100MHz Qo 79 Turns Wire 1-2 2-3 1-3 1-4 -- -- -- 2 1 4-6 (mm∅) -- 0.16UEW 2 L2 FM OSC 100MHz -- -- 76 -- -- -- 2 -- 0.16UEW T1 AM OSC 796kHz 268 -- 65 19 95 -- -- -- 0.05UEW T2 AM IFT 455kHz -- 470 60 -- -- 109 -- 7 0.05UEW HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn Reference Toko Co., Ltd. 666SNF-305NK Toko Co., Ltd. 666SNF-306NK Toko Co., Ltd. 5PNR-5146Y Toko Co., Ltd. 5PNR-5147Y Rev: 1.1 2005.10.26 Page 6 of 10 SA2111C ST AM FM HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn FM AM VC101-A VC101-B VC101-F VC101-E SW1 TYPICAL APPLICATION CIRCUIT Rev: 1.1 2005.10.26 Page 7 of 10 SA2111C 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: 1.1 2005.10.26 Page 8 of 10 SA2111C PACKAGE OUTLINE (Continued) SOP-24-375-1.27 UNIT: mm 0.25±0.05 1.27 0.40 3.10MAX 15.34±0.25 13.97 Http: www.silan.com.cn 7.62 7.9±0.3 2.2MAX 0.1+0.1 1.8±0.2 -0.05 HANGZHOU SILAN MICROELECTRONICS CO.,LTD 0.525±0.2 UNIT: mm 6.0±0.2 SSOP-24-300-1.0 Rev: 1.1 2005.10.26 Page 9 of 10