TA2149BN/BFN TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic TA2149BN,TA2149BFN 3 V AM/FM 1 Chip Tuner IC (for Digital Tuning System) TA2149BN, TA2149BFN are AM/FM 1 chip tuner ICs, which are designed for portable Radios and 3 V Head phone Radios. This is suitable for Digital Tuning System Applications. FM Local Oscillation Voltage is set up low relativity, for NEW FCC. TA2149BN Functions · For NEW FCC. · Suitable for combination with Digital Tuning System which is included IF Counter. · · Adjustable for IF count output sensitivity by external resistance of pin 17 (FM only). TA2149BFN One terminal type AM/FM IF count output for IF counter of Digital Tuning System. · FM: 1.3375 MHz (1/8 dividing) · AM: 450 kHz · Built-in Mute Circuit for IF count output. · For adopting ceramic Discriminator, it is not necessary to adjust the FM Quad Detector Circuit. · Built-in FM MPX VCO circuit. · Built-in one terminal type AM/FM Local Oscillator Buffer Output for Digital Tuning System Applications. · Built-in 1/16 Pre-scaler for FM Local OSC Buffer. · Built-in AM Low cut circuit. · Low supply current. (VCC = 3 V, Ta = 25°C) Weight SDIP24-P-300-1.78: 1.2 g (Typ.) SSOP24-P-300-0.65A: 0.14 g (Typ.) ICCq (FM) = 13 mA (Typ.) ICCq (AM) = 8.5 mA (Typ.) · Operating Supply voltage range: VCC = 1.8~7 V (Ta = 25°C) Note 1: Handle with care to prevent devices from deteriorations by static electricity. 1 2001-12-21 TA2149BN/BFN Block Diagram H: MONO L: ST VT H: AM L: FM OSC BUFF OUT PSC SW IF OUT OPEN: 1/1 VCC: 1/16 FM RF RFout VCC 24 23 AM RFin 22 FM OSC 21 AM OSC 20 OSC OUT 19 ST LED 18 IF REQ 17 IF REQ AM OSC FM OSC ST VCC IF REQ SW DET OUT 16 LPF2 13 LPF1 14 AF AF BUFF VCO DECODE DIVIDE BUFF 1/1 or 1/16 IF BUFF BUFF LEVEL DET 1/8 AM DET FM DET AM MIX FM MIX FMRF MPX IN 15 SM/MO FM/AM AGC AMIF FMIF MUTE 1 FM ANTENNA RF GND 2 FM RFin 3 AM LOW CUT 4 MIX OUT 5 VCC 6 AM IF IN 7 FM IF IN 8 GND 9 AGC 10 11 12 QUAD R-OUT L-OUT BFP R-OUT 2 L-OUT 2001-12-21 TA2149BN/BFN Explanation of Terminals (Terminal Voltage: Typical terminal voltage at no signal with test circuit, VCC = 3 V, Ta = 25°°C) PIN No. 1 Characteristic Terminal Voltage (Typ.) (V) Internal Circuit RF GND (GND for FM RF stage) ¾ AM FM 0 0 0 0.8 1.0 ¾ 3.0 3.0 3.0 3.0 2.3 2.5 24 FM-RFin 60 pF 2 1 kW 2 RF GND 1 22 kW AM DET 3 AM LOW CUT 22 kW 3 GND 8 VCC 5 4 FM MIX 4 MIX OUT AM MIX RF GND 1 6 AM IF IN ¾ 6 3 kW VCC (VCC for AM, FM IF, MPX) 3 kW 5 8 GND GND 8 3 2001-12-21 TA2149BN/BFN Characteristic VCC 5 7 Terminal Voltage (Typ.) (V) Internal Circuit FM IF IN AM FM 3.0 3.0 0 0 0 0 2.5 2.2 1.2 1.2 330 W PIN No. 7 GND 8 GND (GND for AM, FM IF, MPX) VCC 5 9 20 kW ¾ AGC 9 GND 8 100 kW 8 10 VCC 5 10 QUAD GND 8 VCC 5 R-OUT L-OUT 11/12 5 kW 11 12 GND 8 4 2001-12-21 TA2149BN/BFN PIN No. Characteristic Terminal Voltage (Typ.) (V) Internal Circuit AM FM 0 2.2 0.7 2.4 0.7 0.7 1.0 0.9 13 13 AM/FM SW LPF2 · LPF terminal for phase detector · Bias terminal AM/FM SW circuit V13 = GND ® AM V13 = OPEN ® FM 8 GND 14 DC AMP 14 LPF1 · LPF terminal for synchronous detector · VCO stop terminal V14 = GND ® VCO STOP 8 GND 55 kW 15 15 MPX IN GND 8 VCC 5 AM 16 FM 750 W DET OUT a 16 b GND 8 a b 5 LOW ® FM, HIGH ® AM LOW ® AM, HIGH ® FM 2001-12-21 TA2149BN/BFN PIN No. Characteristic Terminal Voltage (Typ.) (V) Internal Circuit AM FM ¾ ¾ ¾ ¾ 2.8 2.7 3.0 3.0 3.0 3.0 5 VCC 17 IF REQ 17 19 kHz 18 18 ST LED GND 8 200 W RF VCC 23 19 OSC OUT 19 PSC SW RF-GND 2 20 VCC 5 20 AM OSC GND 8 21 RF VCC 23 21 FM OSC GND 1 6 2001-12-21 TA2149BN/BFN PIN No. Characteristic Internal Circuit Terminal Voltage (Typ.) (V) AM FM 3.0 3.0 3.0 3.0 3.0 3.0 VCC 5 AGC 22 22 AM RFin GND 8 23 RF VCC (VCC for FM RF stage) 24 FM RFout ¾ cf. pin 1 7 2001-12-21 TA2149BN/BFN Application Note 1. AM Low-Cut Circuit · · The AM Low-Cut action is carried out by the bypass of the high frequency component of the positive-feedback signal at the AF AMP stage. The external capacitor: C3 by-pass this component. The cut-off frequency fL is determined by the internal resistance 22 kW (Typ.) and the external capacitor C3 as following; fL = · · 1 2 ´ p ´ 22 ´ 103 ´ C3 22 kW 22 kW 3 R C3 (Hz) In the case of the AM Low-Cut function is not needed, set up the value of C3 over 1 mF. In the condition of C3 > = 1 mF, the frequency characteristic has flat response at the low frequency. 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 For the FM detection circuit, detection coil is able to use instead of ceramic discriminator. Recommended circuit and recommended coil are as follows. (In this case, please take care that Vin (lim.) falls a little.) VCC VCC 4 3 15 P 2 6 1 10 Pin 10 Test Frequency Co (pF) Qo 10.7 MHz 51 45 Turns 2-3 1-3 4-6 Wire (mmf) Reference 1-2 ¾ ¾ 30 ¾ 0.08UEW Toko Co., Ltd. 600BEAS-10018Z 3. FM/AM switch and forced monaural switch. · · · FM/AM switchover and stereo/forced monaural switchover are done by pin 13 and pin 14. FM/AM switch (pin 13) V13: Low (Active Low, Vth = 0.2 V (Typ.), Ith 30 mA (Typ.) ® AM V13: OPEN ® FM Stereo/forced monaural switch (pin 14) V14: Low (Active Low, Vth = 0.2 V (Typ.), Ith 30 mA (Typ.)® Forced Monaural V14: OPEN ® Stereo VCE (sat) VCE (sat) 14 13 VCC 8 2001-12-21 TA2149BN/BFN 4. VCC Line This ICs have two voltage supply terminals, VCC (for AM, FM IF, MPX stage) and RF VCC (for FM RF stage). Set up the potential difference between VCC and RF VCC 0.4 V (typ.) or less, otherwise there is the case that this IC doesn’t operate normally. 5. How to control the Divider of FM OSC. RF VCC R AM OSC buff SW8 buff out 19 FM OSC 1/1 or 1/16 buff Divider of FM OSC ON/OFF switching is controlled by external pull-up resistor of pin 19. In case of Divider of FM OSC is used, it is necessary to set up the value of R under 470 W (typ.). When R is over 470 W, it is feared that Divider is not operating. (At this time, buffer output frequency is equal to FM OSC frequency.) Which ever Divider of FM OSC is used or not, AM OSC buffer frequency and output level is same. Mode FM SW8 Output Frequency Output Level (Typ.) OPEN 1/1 FM OSC 35 mVrms ON 1/16 FM OSC 110 mVrms 1/1 FM OSC 75 mVrms OPNE AM ON 6. How to adjust the IF Count Output Sensitivity IF count output sensitivity can be adjusted by changing the value of external resistance at pin 17. This ICs have IF signal level detector in pin 9. When DC voltage of pin 9 is high than threshold, IF count output signal come out from the pin 17. And this threshold is controlled by value of external resistance at pin 19. 300 55 250 IF count output sensitivity 50 200 IF sens (FM) 45 150 40 100 35 VCC = 3 V f = 10.7 MHz Df = 75 MHz 30 0 0.5 50 1 1.5 2 2.5 External resistance of pin-17 9 3 IF count output voltage VIF (FM) VIF (FM) 60 mVp-p 350 IF sens (FM) 65 0 3.5 (k9) 2001-12-21 TA2149BN/BFN Maximum Ratings (Ta = 25°C) Characteristics Symbol Rating Unit Supply voltage VCC 8 V LED current ILED 10 mA LED voltage VLED 8 V TA2149BN Power dissipation TA2149BFN 1200 PD (Note 2) mW 500 Operating temperature Topr -25~75 °C Storage temperature Tstg -55~150 °C Note 2: Derated above Ta = 25°C in the proportion of 9.6 mW/°C for TA2149BN of 4 mW/°C for TA2149BFN. Electrical Characteristics (Unless otherwise specified, Ta = 25°C, VCC = 3 V, F/E: f = 98 MHz, fm = 1 kHz FM IF: f = 10.7 MHz, Df = ±75 kHz, fm = 1 kHz AM: f = 1 MHz, MOD = 30%, fm = 1 kHz MPX: fm = 1 kHz) Characteristic Test Circuit ICC (FM) ¾ ICC (AM) Min Typ. Max Vin = 0, FM mode ¾ 13 16.5 ¾ Vin = 0, AM mode ¾ 8.5 11.0 Vin (lim) ¾ Vin = 60dBmV EMF, -3dB limiting ¾ 10 ¾ dBmV EMF Local OSC buffer output voltage 1 VOSC (buff) FM1 ¾ fOSC = 108.7 MHz 23 35 ¾ mVrms Local OSC buffer output voltage 2 VOSC (buff) FM2 ¾ fOSC = 6.79375 MHz SW8: ON 75 110 ¾ mVrms Input limiting voltage Vin (lim) IF ¾ Vin = 80dBmV EMF, -3dB limiting 37 42 47 dBmV EMF Recovered output voltage VOD ¾ Vin = 80dBmV EMF 200 250 300 mVrms Signal to noise ratio S/N ¾ Vin = 80dBmV EMF ¾ 75 ¾ dB Total harmonic distortion THD ¾ Vin = 80dBmV EMF ¾ 0.3 ¾ % AM rejection ration AMR ¾ Vin = 80dBmV EMF ¾ 60 ¾ dB IF count output frequency fIF (FM) ¾ Vin = 80dBmV EMF, SW7: ON IF count output voltage VIF (FM) ¾ Vin = 80dBmV EMF, SW7: ON 250 290 330 mVp-p IF count output sensitivity IF sens (FM) ¾ SW7: ON 42 47 52 dBmV EMF GV ¾ Vin = 27dBmV EMF 20 38 70 mVrms Recovered output voltage VOD ¾ Vin = 60dBmV EMF 60 85 108 mVrms Signal to noise ratio S/N ¾ Vin = 60dBmV EMF ¾ 41 ¾ dB Total harmonic distortion THD ¾ Vin = 60dBmV EMF ¾ 0.7 ¾ % Local OSC buffer output voltage VOSC (buff) AM ¾ fOSC = 1.45 MHz 55 75 ¾ mVrms IF count output voltage VIF (AM) ¾ Vin = 60dBmV EMF、SW7: ON 250 290 350 mVp-p IF count output sensitivity IF sens (AM) ¾ SW7: ON 33 38 43 dBmV EMF ¾ FM mode ¾ 0.75 ¾ ¾ AM mode ¾ 15.5 ¾ Supply current Input limiting voltage F/E Symbol FM IF Gain AM Pin 17 output resistance R17 Test Condition 10 1.3373 1.3375 1.3377 Unit mA MHz kW 2001-12-21 TA2149BN/BFN Characteristic Symbol Test Circuit Test Condition Min Typ. Max Unit RIN ¾ ¾ ¾ 55 ¾ kW ROUT ¾ ¾ ¾ 5 ¾ kW Vin MAX (Stereo) ¾ L + R = 90%, P = 10%, SW3: LPF ON fm = 1 kHz, THD = 3% ¾ 700 ¾ mVrms fm = 100 Hz ¾ 45 ¾ ¾ L+R= 180 mVrms, P = 20 mVrms SW3: LPF ON fm = 1 kHz 35 45 ¾ fm = 10 kHz ¾ 45 ¾ Input resistance Output resistance Max. composite signal input voltage Separation Sep. THD (Monaural) ¾ Vin = 200 mVrms ¾ 0.3 ¾ THD (Stereo) ¾ L+R = 180 mVrms, P = 20 mVrms, SW3: LPF ON ¾ 0.3 ¾ GV ¾ Vin = 200 mVrms -2.7 -1.2 0.2 dB C.B. ¾ Vin = 200 mVrms -1.5 0 1.5 dB VL (ON) ¾ ¾ 10 14 VL (OFF) ¾ 5 8 ¾ VH ¾ To LED turn off from LED turn on ¾ 2 ¾ mVrms Capture range C.R. ¾ P = 15 mVrms ¾ ±8 ¾ % Signal noise ratio S/N ¾ Vin = 200 mVrms ¾ 80 ¾ dB MUTE ¾ Vin = 200 mVrms ¾ 80 ¾ dB Monaural MPX dB Total harmonic distortion Stereo Voltage gain Channel balance Stereo LED sensitivity ON OFF Stereo LED hysteresis Muting attenuation Pilot input (19 kHz) % mVrms Coil Data Coil No. Test Freq. L (mH) Co (pF) Qo Turns 1-2 2-3 1-3 1-4 4-6 Wire (mmf) 2 1 2 ¾ ¾ 0.16UEW Toko Co., Ltd. 666SNF-305NK Reference L1 FM RF 100 MHｚ ¾ ¾ 79 ¾ ¾ L2 FM OSC 100 MHｚ ¾ ¾ 76 ¾ ¾ 2 ¾ ¾ 0.16UEW Toko Co., Ltd. 666SNF-306NK T1 AM OSC 796 kHｚ 268 ¾ 65 19 95 ¾ ¾ ¾ 0.05UEW Toko Co., Ltd. 5PNR-5146Y T2 AM IFT 455 kHｚ ¾ 470 60 ¾ ¾ 109 ¾ 7 0.05UEW Toko Co., Ltd. 5PLG-5147X L1: FM RF L2: FM OSC 3 T2: AM IFT T1: AM OSC Pin 20 FM C.F. 3 3 4 3 2 1 1 1 VCC 11 AM C.F. 4 2 6 1 Pin 4 6 VCC 2001-12-21 TA2149BN/BFN Test Circuit 24 23 22 21 20 FM RFout RF VCC AM RFin FM OSC AM OSC 2SC1815 2.2 kW 0.022 mF DET OUT SW 7 19 OSC OUT 18 ST LED VCC 220 mF 1 mF 3.3 kW 0.1 mF 3.3 kW 0.1 mF 330 pF 3 kW 10 mF MPX IN 560 W 470 W T1 L2 2.4 kW IF OUT SW 8 470 pF 1SV149 47 kW 47 kW 1000 pF 1SV101 2.7 mH 47 kW 1SV101 100 pF L1 0.01 mF VT Vin 2SC1923 0.022 mF 0.01 mF OSC OUT 100 kW 2 kW 400 W 75 W 75 W AM-RF IN 100 kW VDD = 8 V 110 kW 2.2 mF 110 kW 5V SW 4 SW 5 17 16 15 IF REQ DET OUT MPX IN 14 LPF1 13 LPF2 R-OUT 11 L-OUT 12 TA2149BN/BFN GND 8 AGC 9 QUAD 10 0.033 mF CF1 SW 2 CR T2 CF2 0.01 mF AM IF IN FM IF IN 6 7 1 mF VCC 5 0.01 mF AM LOW CUT MIX OUT 3 4 4.7 mF FM RFin 2 0.47 mF 330 W FM-IF IN 270 W FM-RF IN Vin SW 1 50 W BPF LPF 4.7 kW SW 3 75 W RF GND 1 BPF : GFWB3 (Soshin Electric Co., Ltd.) CF1 : SFU450B (Murata Co., Ltd.) CF2 : SFE10.7MA5 (Murata Co., Ltd.) CR : CDALA10M7GA100A-B0 (Murata Co., Ltd.) Vin 12 2001-12-21 TA2149BN/BFN Package Dimensions Weight: 1.2 g (typ.) 13 2001-12-21 TA2149BN/BFN Package Dimensions Weight: 0.14 g (typ.) 14 2001-12-21 TA2149BN/BFN RESTRICTIONS ON PRODUCT USE 000707EBA · TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such TOSHIBA products could cause loss of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and conditions set forth in the “Handling Guide for Semiconductor Devices,” or “TOSHIBA Semiconductor Reliability Handbook” etc.. · The TOSHIBA products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.). These TOSHIBA products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or bodily injury (“Unintended Usage”). Unintended Usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in this document shall be made at the customer’s own risk. · The products described in this document are subject to the foreign exchange and foreign trade laws. · The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA CORPORATION for any infringements of intellectual property or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any intellectual property or other rights of TOSHIBA CORPORATION or others. · The information contained herein is subject to change without notice. 15 2001-12-21