TA31275FNG(O,EL) Toshiba, TA31275FNG(O,EL) Datasheet

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... TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic TA31275FN, TA31275FNG AM/FM RF/IF Detector IC for Low Power Wireless System The TA31275FN is an RF/IF detector IC for AM/FM radio. The IC incorporates an RF amp, 2-level comparator, and local ×8 circuit Features • RF frequency: 240 to 450 MHz (multiplication is used) 100 to 450 MHz (multiplication is not used) • ...

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Pin Description (the values of resistor and capacitor in the internal equivalent circuit are typical.) Pin No. Pin Name 1 OSC IN Local oscillator input pin Local’ power supply pin CC-Lo Lo switch pin. H: ×8 circuit pin. ...

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Pin No. Pin Name Phase-shift input terminal for the FSK 10 QUAD Demodulator. Connect to the discriminator or LC Power supply pin 2. CC2 FM/AM waveform shaping output pin. 12 DATA Open collector output. Connect a pull-up resistor. ...

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Pin No. Pin Name Threshold input terminal for 2-level FM/AM 20 REF comparator. 21 RSSI RSSI output pin. 22 AFOUT Output terminal for FM demodulator. 23 LPF IN FM/AM LPF input pin. 24 LPF OUT FM/AM LPF output pin. Equivalent ...

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Functions 1. Waveform Shaper Circuit (comparator) The output data (pin 12) are inverted. 2. RSSI Function DC potential corresponding to the input level (pin 6) is output to RSSI (pin 21). Output to RSSI (pin 21) is ...

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Battery-Saving (BS) Function and Lo Switch LOBS Function The IC incorporates a battery-saving function and a Lo switch function. These function offer the following selection. FM Mode (FM/AM pin Pin/LOBS Pin Circuits in operation: ･×8 circuit ･Mixer ...

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RF Amp Gain 2 RF amp gain reference value calculated as follows. Measure G v (RF calculated as follows: v (RF − (RF ...

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Control Terminal for Quick Charge Circuit (CHARGE) CHARGE (15 pin) is control terminal for quick charge circuit. REF (20 pin) control terminal for quick charge a given period by time constant of internal resistance and outside capacitance. Enabling the ...

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RSSI (30 kΩ)) R 1200 bps 36 kΩ 2400 bps 36 kΩ 4800 bps 36 kΩ When the filter constants shown below are used not necessary ...

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Cautions for Designing Circuit Board Patterns Observe the following cautions when designing circuit patterns for this product. Local Oscillator Circuit (pin 1) Isolate the local oscillator circuit block sufficiently from the RF amp block. Isolate the local oscillator circuit block ...

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Maximum Ratings (unless otherwise specified 25°C. the voltage is with reference to the ground level.) Characteristics Supply voltage Power dissipation Operating temperature range Storage temperature range The maximum ratings must not be exceeded at any time. Do not ...

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V = 5.0 V, fin (RF) = fin (MIX) = 314.9 MHz, fin (IF) = 10.7 MHz, FM Mode CC dev = ±20 kHz, fmod = 600 Hz (single wave)) Characteristics Quiescent current consumption (for FM) Demodulated ...

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Typical Test Circuit (FSK LPF LPF OUT IN ×8 OSC IN LOBS Test Circuit 1 (1) V RSSI 0.01 µ (3) V DATAL 2 3.0 ...

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G v (RF) 1 1000 ( (MIX) LO 0.01 µ 1000 Test Circuit 2 I ccqfm ...

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Reference Data (This is characteristics data when it used evaluation boards. This is not guarantee on condition that it is stating except electrical characteristics.) Quiescent Current Consumption – Supply Voltage Characteristics 40.7 MHz ...

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Reference Data (This is characteristics data when it used evaluation boards. This is not guarantee on condition that it is stating except electrical characteristics.) RSSI Output Voltage Characteristics (IF, MIX, and RF inputs) 2 MIXIN 1.5 (multiplication ...

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Reference Data (This is characteristics data when it used evaluation boards. This is not guarantee on condition that it is stating except electrical characteristics.) Mixer Conversion Gain – Supply Voltage Characteristics 30 20 110°C 10 25° (MIX) in ...

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Reference Data (This is characteristics data when it used evaluation boards. This is not guarantee on condition that it is stating except electrical characteristics.) Demodulation Distortion Characteristics − (IF 10.7 MHz Vin ...

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Reference Data (with a broadband ceramic filter (280 k) used) 12-dB SINAD Sensitivity Characteristics – FM Modulation (RF 314.9 MHz 1 fmod = 600 ...

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Reference Data (with a broadband ceramic filter (280 k) used) Demodulation Output – Supply Voltage Characteristics 140 Dev = ±60 kHz 120 100 Dev = ±40 kHz (RF 314.9 MHz 60 ...

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Reference Data (with a narrowband ceramic filter (150 k) used) S/N and AMR RF Input Characteristics (Dev = ± (RF 314.9 MHz fmod = 600 Hz 0 ...

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Application Circuit (FSK LPF LPF AF RSSI REF AM/FM MIX OUT IN OUT AM/FM RSSI Comparator ×8 OSC IF V MIX DEC LOBS OUT CC1 ...

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Application Circuit (ASK kΩ 36 kΩ To pin LPF LPF AF RSSI REF AM/FM MIX OUT IN OUT AM/FM RSSI Comparator ×8 IF OSC V MIX IF CC ...

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Package Dimensions Weight: 0.09 g (typ.) TA31275FN/ TA31275FNG 24 03-01-23 ...

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... 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 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 ...