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| TA2022AFNG TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic TA2022AFNG 1.5V AM/FM IF + MPX TA2022AFNG is the AM / FM IF + MPX system IC, which is developed for headphone radio in 1.5V use. This is included many functions and this can be used for digital tuning system with IF counter. Features * Suitable for combination with digital tuning system which is included IF counter. * Built-in AM / FM IF count output for IF counter of digital tuning system. FM: 10.7MHz AM: 450kHz * Adjustable for stop pulse sensitivity (in FM mode) * * * * * * For adopting ceramic discriminator, it is not necessary to adjust the FM QUAD detector circuit. Built-in AM IF output for AM stereo MPX input for main signal is independent of that for pilot signal. (MPX input for pilot signal is shared with AM input) MPX output is high-impedance in power off mode. Built-in power switch Low supply current (VCC = 1.2V, Ta = 25C) FM mode: ICC2 = 5.5mA (typ.) AM mode: ICC3 = 3.7mA (typ.) Operating supply voltage range (Ta = 25C) VCC (opr) = 0.95~2.2V Stereo operating supply voltage range (Ta = 25C) VCC (opr) = 1.0~2.2V Weight: 0.14 g (typ.) * * 1 2006-04-11 TA2022AFNG 2 2006-04-11 TA2022AFNG Terminal Explanation Terminal Voltage: Typical Terminal Voltage at no Signal with The Test Circuit 1 (VCC = 1.2V, Ta = 25C) Terminal No. Name Terminal Voltage (V) AM FM Function Internal Circuit 1 VREF Referential voltage Bypass terminal for AM RF and FM IF amplifier 0.9 0.9 2 OSC AM OSC 1.2 1.2 4 MIX Output of AM MIX 1.2 1.2 3 FM IF in Imput of FM IF signal Input impedance 330 (typ.) 0.9 0.9 5 VCC 1.2 1.2 6 AM IF IN Imput of AM IF signal Input impedance 3k (typ.) 1.2 1.2 7 QUAD FM QUAD detector 1.2 1.2 3 2006-04-11 TA2022AFNG Terminal No. Name Function Internal Circuit Terminal Voltage (V) AM FM 8 AGC AM mode AGC time constant is determined by external capacitor. FM mode The sudden change of stop pulse sensitivity is held in by external capacitor. 9 GND 0 0 10 IF OUT Output of IF count signal In case of IF request mode, IF count signal for IF counter is taken from this terminal. FM: VIF (FM) = 80mVp-p (typ.) AM: VIF (AM) = 100mVp-p (typ.) 11 IF REQ IF request switch VCC: Receive mode Open: IF request mode FM stop pulse sensitivity can be changed by connecting RSEN in IF request mode. RSEN should be smaller than 100k 12 SP OUT Output of stop pulse VCO frequency can be monitored, in case that this terminal is connected with GND through a resistor (RVCO 100k). ON : VCO monitor OPEN : SP OUT Stereo indicator terminal This terminal shared with output of modulated AM IF signal. AM IF output: 6mVrms (RIF = 3k, typ.) RIF should be smaller than 3k. In case that RIF > 3k, internal biasing circuit doesn't operate normally in AM mode. 13 ST IND 4 2006-04-11 TA2022AFNG Terminal No. 14 Name LOUT Function Internal Circuit Terminal Voltage (V) AM FM Output of stereo signal These terminals are high- impedance in power off mode. 0.5 0.5 15 ROUT 16 LPF1 LPF terminar for phase detector 17 VCO VCO The temperature characteristic of free running frequency is +350ppm / C. Temperature coefficient: SH 1.2 18 LPF2A LPF terminal for synchronous detector 19 LPF2B LPF terminal for synchronous detector and AM / FM switch VCC: AM mode OPEN: FM mode 1.2 21 PILOT IN Input of FM stereo pilot signal and AM signal 0.1 0.1 5 2006-04-11 TA2022AFNG Terminal No. Name Function Internal Circuit Terminal Voltage (V) AM FM 20 MPX IN Input of FM stereo main signal 0.1 22 DET OUT Detector output circuit Output impedance (typ.) AM: 10k FM: 1k 0.6 0.6 23 PW SW Power switch VCC : IC on OPEN/GND: IC off 1.2 1.2 24 AM RF IN Input of AM RF signal Input impedance: 13k (typ., at no signal) 0.9 0 6 2006-04-11 TA2022AFNG Application Note 1. Power switch It is necessary to connect an external pull-down resistor with the terminal of PW SW (pin (23)), in case that this IC is turned on due to external noise etc. 2. Mode switch The terminal of AM / FM changeover is pin(19). In controlling the AM / FM mode with voltage, it is applied as follows. VCC : AM mode OPEN: FM mode In FM mode, care should be taken to eliminate influence due to external noise etc, because this terminal is opened. The leak current flows through this terminal, in the case that the terminal is connected to VCC line independently, even through this IC is off mode (the terminal of PW SW (pin(23)) is off mode). 3. IF count output IF count signal can be taken from IF output terminal (pin(10)), when IF request terminal (pin(11)) is connected with GND through RSEN and stop pulse sensitivity is on. Switch Condition Pin(11) FM AM OPEN (RSEN 100k) Pin(19) OPEN VCC Output Frequency 10.7MHz 450kHz Output Voltage (typ.) 80mVp-p 100mVp-p Output Impedance (typ.) 2 k Table.1 IF count output 4. FM stop pulse sensitivity FM stop pulse sensitivity can be changed by connecting an external resistor RSEN between IF request terminal (pin(11)) and GND. The gain of FM IF amplifier is controlled by RSEN, and FM stop pulse sensitivity is changed. It is advised that RSEN is 100k or less. 7 2006-04-11 TA2022AFNG 5. MPX IN This IC can attenuate only FM stereo main signal level. Because MPX input for main signal (pin(20)) is independent of that for pilot signal (pin(21), this terminal is shared with AM input). Internal circuit of MPX in terminal (pin(20)) is shown in fig.2. FM stereo main signal level can be attenuated by connecting an external resistor RX. Because FM stereo main signal level is attenuated by internal resistor (14k and10k) and resistor RX. And it is applied to an emitter of transistor Q. 6. AM tweets It is necessary to connect the capacitor Ct (about 330pF) between VCC terminal (pin(6)) and DET OUT (pin(22)), in case that AM tweets occurs by pattern layout. (Fig.3) This Ct can also functions as phase compensation of MPX stage. 7. AM AGC It is necessary to connect a capacitor C (about 68pF) between VCC terminal (pin(8)) and AM IF IN terminal (pin(6)), in case that AGC circuit doesn't operate normally. Because second harmonic of local oscillator is applied AM IF terminal (pin(6)) by pettern layout. In case that capacitor (C = 68pF) is connected, AM stop pulse sensitivity is delayed about 1dB. Output DC voltage of AGC terminal (pin(8)) is V8 = 0.1V (typ., AM mode, at no signal). 8. Stereo indicator / AM IF output (for AM stereo) * The terminal of pin(13) is built in stereo indicator function and modulated AM IF signal output. In AM mode, RIF (3k or less) should be connected between VCC and pin(13) , or pin(13) should connected to VCC directly. (Fig.5) In case that RIF >3k or pin (13) is opened, this IC doesn't operate normally in AM mode. Because transistor Q2 is saturated. Fig.3 Countermeasures for AM tweets Fig.2 Internal circuit of MPX in terminal 8 2006-04-11 TA2022AFNG * AM IF output VIF (AM MOD) = 6mVrms (typ. RIF = 3k) The applications of this terminal are explained as follow. (a) Method to use stereo indicator and AM IF output External circuit is recommended as shown in fig.6. (b) Method to use stereo indicator. External circuit is recommended as shown in fig.7. RIF is not needed in case that this IC is not use in AM mode. (c) Method to use AM IF output External circuit is recommended as shown in fig.8. (d) In case that functions of this terminal are not used. External circuit is recommended as shown in fig.9. RIF is not needed in case that this IC is not used in AM mode. Absolute Maximum Ratings (Ta = 25C) Characteristic Supply voltage Stop pulse voltage Stop pulse current Stereo indicator voltage Stereo indicator current Power dissipation Operating temperature Storage temperature Symbol VCC VSP ISP VST IST PD (Note) Topr Tstg Rating 4.5 4.5 10 4.5 10 500 -25~75 -55~150 Unit V V mA V mA mW C C Note: Derated above Ta = 25C in the proportion of 4mW / C. 9 2006-04-11 TA2022AFNG Electrical Characteristics Unless Otherwise Specified VCC = 1.2V, Ta = 25C, SW1: a, SW4: OPEN, SW5: a, SW6: a / b, SW7: ON FM IF: f = 10.7MHz, fm = 1kHz, f = 22.5kHz, Vin = 80dBV, EMF, SW2: ON, SW3: b AM: f = 1MHz, fm = 1kHz, MOD = 30%, Vin = 60dBV, EMF, SW2: OPEN, SW3: a MPX: fm = 1kHz, fp = 19kHz, SW3:b Characteristic Symbol ICC1 Supply current ICC2 ICC3 Input limiting sensitivity Recovered output voltage 1 Signal to noise ratio 1 FM IF Total harmonic distortion 1 AM rejection ratio Stop pulse sensitivity 1 Stop pulse sensitivity 2 IF output voltage Gain Recovered output voltage 2 Signal to noise ratio2 Total harmonic distortion 2 AM Stop pulse sensitivitiy IF output voltage Oscillator voltage Oscillator stop voltage Vin (lim) VOD1 S / N1 THD1 AMR SP1 SP2 VIF (FM) GV VOD2 S / N2 THD2 SP3 VIF (AM) Vosc Vstop 2 1 I12 = 0.5mA, SW6: a MOD = 0, SW7: OPEN 1 1 Test Circuit Test Condition PW off, SW1: b FM mode, Vin = 0 AM mode, Vin = 0 -3dB limiting Min. 43 35 MOD = 30% I12 = 0.5mA, SW6: a I12 = 0.5mA, RSEN = 39k SW6: a, SW7: OPEN f = 0, SW7: OPEN Vin = 26dBV EMF 50 15 30 25 30 Typ. 5.5 3.7 48 55 60 0.5 40 55 64 80 27 45 38 1.5 30 100 55 Max. 5 7.5 5.5 53 70 60 60 35 0.95 Unit A mA dBV EMF mVrms dB % dB dBV EMF mVp-p mVrms dB % dBV EMF mVp-p mVrms V 10 2006-04-11 TA2022AFNG Characteristic Voltage gain 1 Voltage gain 2 Channel balance Maximum composite signal input level Mono Total harmonic distortion MPX Stereo AM Symbol GV (FM) GV (AM) CB Vin (MAX) THD3 THD4 THD5 1 Separation SEP L + R =90mVrms P = 10mVrms L + R =90%, P = 10% THD = 3% Vin = 100mVrms (mono) L + R =90mVrms, P = 10mVrms Vin = 100mVrms fm = 100Hz fm = 1kHz fm = 10kHz Stereo indicator sensitivity On Off ST (ON) ST (OFF) VH CR S / N3 I23 V23 I19 V16 V11 2 VCC = 0.95V Pilot signal input I13 = 0.5mA, SW5: a To indicator turn off from turn on P = 10mVrms, fp = 19kHz Vin = 100mVrms (mono) SW1: c SW1: d SW3: c SW4: ON SW7: ON Vin = 100mVrms (mono) Test Circuit Test Condition Min. -1.5 -0.5 -2 25 2 5 0 50 0.9 Typ. +0.5 +1.5 220 0.2 0.3 0.2 36 35 34 5.5 4 1.5 7 65 0.1 Max. +2.5 +3.5 +2 0.5 8 0.3 mVrms mVrms % dB A V A V V dB % mVrms dB Unit Stereo indicator hysteresis Capture range Signal noise ratio 3 Power switch On current Off voltage AM mode on current FM mono mode on voltage IF request off voltage 11 2006-04-11 TA2022AFNG 12 2006-04-11 TA2022AFNG Coil Data Coil L T AM OSC AM IFT Test Frequency 796kHz 450kHz L (H) 100 Co (pF) 180 Qo 85 65 Turns 1-2 13 2-3 55 1-3 184 4-6 29 Wire (mm) 0.06UEW 0.05UEW Reference (coil no.) (S)4187-144 (S)4161-242 (S): SUMIDA ELECTRIC Co., LTD. 13 2006-04-11 TA2022AFNG Characteristic Curve 14 2006-04-11 TA2022AFNG MPX 15 2006-04-11 TA2022AFNG 16 2006-04-11 TA2022AFNG Package Dimensions Weight: 0.14g (typ.) 17 2006-04-11 TA2022AFNG RESTRICTIONS ON PRODUCT USE * The information contained herein is subject to change without notice. 021023_D 060116EBA * 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. 021023_A * 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. 021023_B * The products described in this document shall not be used or embedded to any downstream products of which manufacture, use and/or sale are prohibited under any applicable laws and regulations. 060106_Q * The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA for any infringements of patents or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of TOSHIBA or others. 021023_C * The products described in this document are subject to the foreign exchange and foreign trade laws. 021023_E About solderability, following conditions were confirmed * Solderability (1) Use of Sn-37Pb solder Bath * solder bath temperature = 230C * dipping time = 5 seconds * the number of times = once * use of R-type flux (2) Use of Sn-3.0Ag-0.5Cu solder Bath * solder bath temperature = 245C * dipping time = 5 seconds * the number of times = once * use of R-type flux 18 2006-04-11 |
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