TA31275FN/ TA31275FNG 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) • IF frequency: 10.7 MHz • Operating voltage range: 2.4 to 5.5 V • Current dissipation: 5.8 mA (FM)/5.4 mA (AM) (except current at oscillator circuit) • Current dissipation at BS: 0 µA (typ.) • Small package: 24-pin SSOP (0.65 mm pitch) Weight: 0.09 g (typ.) Block Diagram SAW 22 20 19 18 17 16 15 14 13 21 24 23 LPF LPF AF RSSI REF AM/FM MIX GND1 RF- CHARGE RFRFOUT IN OUT IN OUT DEC IN AM/FM RSSI Comparator ×8 OSCIN 1 Detector VCCLo LoBS 2 3 MIX OUT 4 VCC1 5 IF-IN 6 IFDEC GND2 7 8 BS QUAD 9 10 VCC2 DATA 11 12 BPF 1 03-01-23 TA31275FN/ TA31275FNG Pin Description (the values of resistor and capacitor in the internal equivalent circuit are typical.) Internal Equivalent Circuit 1 OSC IN Local oscillator input pin. 2 VCC-Lo Local’ power supply pin 3 LOBS Lo switch pin. H: ×8 circuit pin. L: Through pass 4 MIX OUT The output impedance of the pin is typically 330 Ω. 5 VCC1 Power supply pin 1. 6 IF IN IF amp input pin. 5 kΩ 2 pF 5 kΩ 1 15 kΩ Function 5 kΩ Pin Name 15 kΩ Pin No. 70 kΩ 3 Mixer output pin. 245 Ω 4 170 Ω 170 Ω 3 kΩ 6 IF amp input pin. 7 7 IF DEC Used as a bias coupling pin. 8 GND2 GND pin 2. 9 BS Battery saving pin. 9 2 40 kΩ 03-01-23 TA31275FN/ TA31275FNG 11 QUAD Function Internal Equivalent Circuit 1 kΩ 1 pF Phase-shift input terminal for the FSK Demodulator. Connect to the discriminator or LC. VCC2 Power supply pin 2. 12 DATA FM/AM waveform shaping output pin. Open collector output. Connect a pull-up resistor. 13 RF IN RF signal input pin. 8 kΩ 10 Pin Name 8 kΩ Pin No. 500 Ω 10 12 2 kΩ 16 10 kΩ 14 RF DEC Emitter pin for internal transistor. 3 kΩ 13 16 RF OUT RF amp output pin. CHARGE Control terminal for quick charge circuit. To use the quick charge circuit, attach a capacitor. 14 500 Ω GND1 GND pin 1. 18 MIX IN Mixer input pin. 19 AM/FM Changeover switch for ASK/FSK. Hi: AM Lo: FM 100 kΩ 5 kΩ 18 500 Ω 17 2.4 kΩ 15 15 300 kΩ 19 3 03-01-23 TA31275FN/ TA31275FNG Pin No. Pin Name Function Internal Equivalent Circuit 24 20 500 Ω 100 kΩ 20 REF Threshold input terminal for 2-level FM/AM comparator. 23 COMP DATA 5.5 kΩ RSSI RSSI output pin. 21 22 AFOUT Output terminal for FM demodulator. 22 23 LPF IN FM/AM LPF input pin. 30 kΩ 21 33 kΩ 100 kΩ 30 kΩ 500 Ω 5.5 kΩ 23 24 LPF OUT 24 FM/AM LPF output pin. Equivalent circuits are given to help understand design of the external circuits to be connected. They do not accurately represent the internal circuits. 4 03-01-23 TA31275FN/ TA31275FNG Functions 1. Waveform Shaper Circuit (comparator) The output data (pin 12) are inverted. 2. RSSI Function After R is connected 21 R 30 kΩ DC potential corresponding to the input level of IF IN (pin 6) is output to RSSI (pin 21). Output to RSSI (pin 21) is converted to a voltage by the internal resistance. Thus, connecting external resistance R to pin 21 varies the gradient of the RSSI output as shown below. Note that due to the displacement of temperature coefficients between external resistor R and the internal IC resistor IC resistor, the temperature characteristic of the RSSI output may change. Also, the maximum RSSI value should be VCC − 1 V or less, because AM doesn’t correct movement Filter AMP when voltage of RSSI high. IF input level Figure 1 Figure 2 3. VCC Pin and GND Pin Use the same voltage supply for VCC − Lo (2 pin) and VCC1 (5 pin) and VCC2 (11 pin) (or connect them). Also, use the same voltage supply source for GND1 (17 pin) and GND2 (8 pin) (or connect them). 4. Local Oscillator Circuit The local oscillator circuit is external-input-only. The device incorporates no transistor for oscillation. Input to pin 1 at a level from 95 to 105dBµV. Adjust the values of constants C107 and C108 shown in the application circuit diagram so that the input level will become approximately 100dBµV. By switching the Lo switch (LOBS), the frequency set by the external circuit can be used as-is without using the ×8 circuit. Lo Switch (LOBS) H L Local oscillation status ×8 circuit in operation ×8 circuit halted/through pass 5. RF Amp Current Adjustment R The RF amp current dissipation can be regulated by varying resistor R as shown in the figure below. When R = 1 kΩ, the current dissipation is approximately 600 µA. 14 RF DEC Figure 3 5 03-01-23 TA31275FN/ TA31275FNG 6. 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: L) BS Pin/LOBS Pin Circuit Status in the IC IC Current Dissipation (at no signal) H/H Circuits in operation: ･×8 circuit ･Mixer ･RF amp ･Comparator ･IF amp ･Detector circuit ･RSSI ･Comparator capacitor charger circuit 5.8 mA (typ.) H/L ×8 circuit only halted, Frequency set by External circuit can be used as-is. 3.5 mA (typ.) L/H ×8 circuit only in operation 2.6 mA (typ.) L/L All circuits 0 mA (typ.) AM Mode (FM/AM pin: H) BS Pin/LOBS Pin Circuit Status in the IC IC Current Dissipation (at no signal) H/H Circuits in operation: ･×8 circuit ･Mixer ･RF amp ･Comparator ･IF amp ･RSSI ･Comparator capacitor charger circuit 5.4 mA (typ.) H/L ×8 circuit only halted, Frequency set by External circuit can be used as-is. 3.1 mA (typ.) L/H ×8 circuit only in operation 2.6 mA (typ.) L/L All circuits 0 mA (typ.) 6 03-01-23 TA31275FN/ TA31275FNG 7. RF Amp Gain 2 RF amp gain 2 (Gv (RF) 2) is a reference value calculated as follows. Measure GRF in the following figure. Gv (RF) 2 is calculated as follows: Gv (RF) 2 = GRF − Gv (MIX) 1000 pF 1000 pF 18 16 4 6 13 6 pF SG 50dBµV 33 nH 6 pF 1 kΩ 27 nH 0.01 µF 0.01 µF GRF Figure 4 8. IF Amp Gain The intended value is 75dB. 9. Waveform-Shaping Output Duty Cycle The specified range of electrical characteristics is only available for single-tone. 10. Local Frequency Range (after multiplying frequency by 8) When the multiplier circuit is used, the local frequency will be in the range 250.7 MHz to 439.3 MHz. 11. Treatment of FM Terminal when Using AM C18 R9 36 kΩ C17 R8 R9 C18 When using AM, it is not necessary to treat the QUAD pin (pin 10). Leave it open or connected to an FM external circuit. To use the bit rate filter, connect the RSSI pin (pin 21) to the bit rate filter through a resistor. The AF-OUT pin (pin 22) should be left open. 22 21 AF RSSI OUT Bit rate filter for FM 22 21 AF RSSI OUT Bit rate filter for AM Figure 5 Figure 6 Using AM causes current to flow through the AM/FM pin (pin 19). Ground the AM/FM pin (pin 19) or connect it to the BS pin (pin 9). 7 03-01-23 TA31275FN/ TA31275FNG 12. 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 CHARGE pin requires an external capacitor. In normal operation, connect a capacitor having the same capacitance as that of the capacitor connected to the REF pin (pin 20). If the connected external capacitor (C11) is 0.1 µF, the quick charge time is 7 ms (typically). 13. Bit Rate Filter for FM The current FM bit rate filter is used as a tertiary filter. If the filter is to be used at a rate other than 1200 bps, please change the filter constant. Quadratic Filter (NRZ) R10 R9 R8 C20 C19 C18 1200 bps 68 kΩ 68 kΩ 68 kΩ 0.01 µF 560 pF 3300 pF 2400 bps 68 kΩ 68 kΩ 68 kΩ 4700 pF 270 pF 1500 pF 4800 bps 68 kΩ 68 kΩ 68 kΩ 2200 pF 150 pF 680 pF 14. Bit Rate Filter for AM The current AM bit rate filter is used as a quadratic filter. If the filter is to be used at a rate other than 1200 bps, please change the filter constant. Quadratic Filter (NRZ) (the bit rate filter time constant takes into account the internal resistance RSSI (30 kΩ)) R R10 C20 C19 1200 bps 36 kΩ 68 kΩ 4700 pF 1500 pF 2400 bps 36 kΩ 68 kΩ 2200 pF 680 pF 4800 bps 36 kΩ 68 kΩ 1000 pF 390 pF When the filter constants shown below are used, it is not necessary to set the R constant value. R R10 C20 C19 1200 bps 30 kΩ 6800 pF 2200 pF 2400 bps 30 kΩ 3300 pF 1500 pF 4800 bps 30 kΩ 1800 pF 820 pF In addition, the current AM bit rate filter can be used as a tertiary filter. If the filter is to be used at a rate other than 1200 bps, please change the filter constant. 8 03-01-23 TA31275FN/ TA31275FNG Quadratic Filter (NRZ) (the bit rate filter time constant takes into account the internal resistance RSSI (30 kΩ)) R R9 R10 C20 C19 C18 1200 bps 36 kΩ 68 kΩ 68 kΩ 0.01 µF 560 pF 3300 pF 2400 bps 36 kΩ 68 kΩ 68 kΩ 4700 pF 270 pF 1500 pF 4800 bps 36 kΩ 68 kΩ 68 kΩ 2200 pF 150 pF 680 pF When the filter constants shown below are used, it is not necessary to set the R constant value. R R9 R10 C20 C19 C18 1200 bps 30 kΩ 30 kΩ 0.033 µF 2200 pF 8200 pF 2400 bps 30 kΩ 30 kΩ 0.015 µF 1000 pF 3900 pF 4800 bps 30 kΩ 30 kΩ 6800 pF 470 pF 1800 pF For the cutoff frequency of the bit rate filter, specify a sufficiently high value for the bit rate to be used. Specifying a relatively high cutoff frequency for the bit rate filter enables a low capacitor to be used at the REF pin, therefore making the pulse rise quickly. When AM is used, the internal resistance of RSSI is used. So, take the output resistance into account when specifying a cutoff frequency. 9 03-01-23 TA31275FN/ TA31275FNG 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 securely so that its output will not get in the IF input, IF filter, or mixer input. Do not place the local oscillator circuit block too close to the ceramic filter. Subdivide the ground pattern for the local oscillator circuit block, and connect the subdivisions with thin lines. Mixer Output Block (pin 4) to IF Input Block (pin 6) Isolate the input and output patterns of the IF filter securely from each other. Demodulator Circuit Block (pin 10) Isolate the demodulator circuit block sufficiently from the IF input block (pin 6). Do not place the LC too close to the IC device. Data Output Block (pin 12) Isolate the data output block sufficiently from the IF input block (pin 6). Isolate the output pattern of the data output block from other circuits as much as possible, so any noise from a stage subsequent to the output will not affect them. RF Amp Circuit Block (1) Preventing RF amp oscillation Do not place the patterns connected to pins 13 and 14 too close to each other. Isolate the patterns connected to the input block (pin 13) and output block (pin 16) from each other. Make the RF input signal line relatively thin. Place a relatively wide ground pattern between the RF-IN pin (pin 13) and RF-DEC pin (pin 14). Connect the RF-OUT pin (pin 16) and MIX-IN pin (pin 18) with the shortest possible pattern. (2) Attaining a sufficient gain To attain a sufficient RF amp gain, select an optimum value for the input matching circuit block (pin 13) according to the board circuit pattern. IC Mounting Area Provide a ground pattern under the IC device, and prepare relatively many through holes. 10 03-01-23 TA31275FN/ TA31275FNG Maximum Ratings (unless otherwise specified, Ta = 25°C. the voltage is with reference to the ground level.) Characteristics Symbol Rating Unit VCC 6 V Power dissipation PD 780 mW Operating temperature range Topr −40 to 85 °C Storage temperature range Tstg −55 to 150 °C Supply voltage The maximum ratings must not be exceeded at any time. Do not operate the device under conditions outside the above ratings. Operable Range (unless otherwise specified, Ta = 25°C. the voltage is with reference to the ground level.) Symbol Test Circuit Test Condition Min Typ. Max Unit Operating voltage range VCC 2.4 5.0 5.5 V RF operating frequency 1 fRF1 When frequency multiplication is used 240 450 MHz RF operating frequency 2 fRF2 When frequency multiplication is not used 100 450 MHz Local frequency fLO When frequency multiplication is used (×8) 250.7 439.3 MHz Characteristics Operating ranges indicate the conditions for which the device is intended to be functional even with the electrical changes. Electrical Characteristics (unless otherwise specified: Ta = 25°C, VCC = 5 V, fin (RF) = fin (MIX) = 314.9 MHz, fin (IF) = 10.7 MHz) Symbol Test Circuit Icco 3 RF amp gain 1 Gv (RF) 1 1 (5) Mixer conversion gain Gv (MIX) RSSI output voltage 1 VRSSI1 RSSI output voltage 2 VRSSI2 RSSI output voltage 3 Characteristics Min Typ. Max Unit 0 5 µA −9.0 −6.0 −3.0 dB 17 21 25 dB Vin (IF) = 35dBµVEMF 0.05 0.25 0.45 V Vin (IF) = 65dBµVEMF 0.8 1.05 1.3 V VRSSI3 Vin (IF) = 100dBµVEMF 1.6 1.95 2.3 V RSSI output resistance RRSSI 22 30 38 kΩ Comparator input resistance RCOMP 75 100 125 kΩ Data output voltage (L level) VDATAL 1 (3) IDATAL = 500 µA 0.4 V Data output leakage current (H level) IDATAH 1 (4) 2 µA BS pin H-level input voltage VBSH 2.2 5.5 V BS pin L-level input voltage VBSL 0 0.2 V LOBS pin H-level input voltage VLOBSH 2.2 5.5 V LOBS pin L-level input voltage VLOBSL 0 0.2 V Current dissipation at battery saving Test Condition BS = “L”, LOBS = “L” The input and output impedances are 50 Ω. 11 03-01-23 TA31275FN/ TA31275FNG FM Mode (Ta = 25°C, VCC = 5.0 V, fin (RF) = fin (MIX) = 314.9 MHz, fin (IF) = 10.7 MHz, dev = ±20 kHz, fmod = 600 Hz (single wave)) Characteristics Quiescent current consumption (for FM) Demodulated output level Waveform shaping duty ratio Symbol Test Circuit Iccqfm 2 (1) Vod DRfm Test Condition Min Typ. Max Unit BS/LOBS/FMAM = “H/H/L” Fin (Lo) = 40.7 MHz 4.3 5.8 7.3 mA Vin (IF) = 80dBµVEMF 30 40 55 mVrms 1 (2) Vin (IF) = 80dBµVEMF For single tone 45 50 55 % AM Mode (Ta = 25°C, VCC = 5.0 V, fin (RF) = fin (MIX) = 314.9 MHz, fin (IF) = 10.7 MHz, AM = 90%, fmod = 600 Hz (square wave)) Symbol Test Circuit Quiescent current consumption (for AM) Iccqam 2 (2) Reference characteristic data DRam 1 (2) Characteristics Test Condition Min Typ. Max Unit BS/LOBS/FMAM = “H/H/H” Fin (Lo) = 40.7 MHz 4.0 5.4 6.8 mA Vin (IF) = 80dBµVEMF For single tone 45 50 55 % Reference Characteristic Data* Symbol Test Circuit Test Condition Typ. Unit IF amp input resistance R (IF) IN 330 Ω RF amp gain 2 Gv (RF) 2 31 dB RF amp input resistance R (RF) IN 1.2 kΩ RF amp input capacitance C (RF) IN 2.0 pF Characteristics C (RF) OUT 2.0 pF Mixer input resistance R (MIX) IN 1.5 kΩ Mixer input capacitance C (MIX) IN 1.5 pF Mixer output resistance R (MIX) OUT 330 Ω IP3 96 dBµV RF amp output capacitance Mixer intercept point *: These characteristic data values are listed just for reference purposes. They are not guaranteed values. Reference Characteristic Data (FM mode)* Symbol Test Circuit Vi (LIM) Signal-to-noise ratio 1 S/N1 Signal-to-noise ratio 2 S/N2 Characteristics Limiting sensitivity Test Condition Typ. Unit IF input 35 dBµV EMF 1 (8) Vin (IF) = 40dBµVEMF 40 dB 1 (8) Vin (IF) = 80dBµVEMF 57 dB *: These characteristic data values are listed just for reference purposes. They are not guaranteed values. 12 03-01-23 TA31275FN/ TA31275FNG Typical Test Circuit (FSK) 1000 pF R5 1 kΩ C10 C9 C12 C22 6 pF 0.01 µF 1000 pF 0.1 µF 27nH 1 kΩ R6 C11 > = C15 68 kΩ C13 C15 C17 1000 pF 0.1 µF 1000 pF L4 3300 pF VCC 68 kΩ R8 R9 R10 68 kΩ C19 560 pF C20 0.01 µF C18 VCC 22 20 19 18 17 16 15 14 13 21 24 23 LPF LPF AF RF RSSI REF AM/FM MIX GND1 RF CHARGE RF OUT IN OUT OUT DEC IN IN AM/FM RSSI Comparator ×8 C7 R3 4.7 kΩ VCC VCC C14 0.01 µF VCC DATA 0.1 µF BPF VCC R4 QUAD VCC2 DATA 10 11 12 0.1 µF 9 10 µF BS Detector C3 VCC VCC C6 5 IF DEC GND2 6 7 8 0.01 µF IF IN VCC1 0.1 µF MIX LOBS OUT 4 2 3 C2 0.1 µF OSC IN 1 100 kΩ Detector Test Circuit 1 (1) VRSSI (2) DR 0.01 µF 0.01 µF V 12 100 kΩ SG 51 Ω 62 Ω SG 6 21 1000 pF 6 VCC (3) VDATAL (4) IDATAH V 2.5 V V 2.5 V R = 10 kΩ 20 VCC 12 V 20 12 VCC 100 kΩ I = V/100 × 10 V 3.0 V V 3 3.0 V 23 V 13 23 03-01-23 TA31275FN/ TA31275FNG (5) Gv (RF) 1 (6) Gv (MIX) 1000 pF 1000 pF 4 0.01 µF 13 SG 51 Ω 51 Ω SG 1000 pF 16 51 kΩ 13 6 (7) Gv (MIX) vs VLO (8) S/N1, 2 0.01 µF 6 0.01 µF 1000 pF 13 SG 51 Ω SG SG 24 51 Ω 18 1000 pF 1 51 Ω 4 51 Ω SG Buff 0.01 µF 1 Test Circuit 2 17 2 3 14 9 SG 1 kΩ 1 kΩ 8 0.01 µF 51 Ω Iccqam 0.01 µF 51 Ω Iccqfm 19 1 8 5 11 2 A 14 3 9 17 19 SG 1 5 11 A VCC VCC Test Circuit 3 1 kΩ Icco 8 17 9 14 2 5 16 A VCC 14 03-01-23 TA31275FN/ TA31275FNG 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 Quiescent Current Consumption – Supply Voltage Characteristics FM Mode 8 f (Lo) in = 40.7 MHz V (Lo) in = 100dBµV 6 * No switching pin current is included. 5 110°C 7 FM_ALL Quiescent current consumption ICCqfm (mA) Quiescent current consumption ICC (mA) 7 AM_ALL 4 Multiplication off 3 Multiplication only 2 1 1 2 25°C 5 −40°C 4 3 2 f (Lo) in = 40.7 MHz V (Lo) in = 100dBµVEMF * No switching pin current is included. 1 BS 0 0 6 3 Supply voltage 4 VCC 5 0 0 6 1 (V) 4 VCC 5 6 (V) RF Amp Conversion Gain – Supply Voltage Characteristics 8 0 −5 RF amp conversion gain (dB) 110°C 7 Quiescent current consumption ICCqam (mA) 3 Supply voltage Quiescent Current Consumption – Supply Voltage Characteristics AM Mode 6 25°C 5 −40°C 4 3 2 f (Lo) in = 40.7 MHz V (Lo) in = 100dBµVEMF 1 0 0 2 2 3 Supply voltage 4 VCC 5 −15 −20 110°C −40°C −25 −30 25°C −35 f (RF) in = 314.9 MHz V (RF) in = 50dBµVEMF <Meas point> RFOUT at spectrum analyzer * Input/output impedance = 50 Ω −40 −45 * No switching pin current is included. 1 −10 −50 1 6 2 (V) 3 4 Supply voltage RF Amp Frequency Characteristics 5 VCC 6 (V) S Curve Characteristics (IF IN) −2 2.5 VCC = 5 V DEC (R5) = 750 Ω f (IF) in = 10.7 MHz + ∆f S curve output voltage (V) RF amp conversion gain (dB) −3 −4 −5 DEC (R5) = 1 kΩ −6 −7 VCC = 5 V V (RF) in = 50dBµV −8 <Meas point> RFOUT at spectrum −9 analyzer * Input/output impedance = 50 Ω −10 100 300 500 2 V (IF) in = 50dBµVEMF <Meas point> AFOUT at multi meter 1.5 −40°C 1 25°C 0.5 0 −600 1000 RF IN input frequency f (RF) in (MHz) 110°C −400 −200 0 Detuning frequency 15 200 400 600 (kHz) 03-01-23 TA31275FN/ TA31275FNG 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) RSSI Output Voltage Characteristics (MIX inputs) (V) 2.5 2 1.5 VRSSI RF IN MIXIN (multiplication is used) MIXIN (multiplication is not used) 1 f (RF) in = f (MIX) in = 314.9 MHz/VCC = 5 V f (IF) in = 10.7 MHz f (Lo) in = 40.7/304.2 MHz V (Lo) in = 100dBµV <Meas point> RSSI at multi meter 0.5 IF IN 0 −20 0 20 40 Input level RSSI output voltage RSSI output voltage VRSSI (V) 2.5 60 80 100 VCC = 5 V f (MIX) in = 314.9 MHz f (Lo) in = 40.7 MHz 2 V (Lo) in = 100dBµV LOBS = H <Meas point> RSSI at multi meter 1.5 1 0.5 Vin (dBµVEMF) (dB) (dB) S + N, N −70 −20 AMR S + N, N VCC = 5 V f (IF) in = 10.7 MHz Dev = ±20 kHz fmod = 600 Hz <Meas point> FILOUT at audio analyzer 0 20 −30 −40 −50 120 40 60 80 100 −90 −20 120 V (IF) in (dBµVEMF) −20 −30 110°C −40 −40°C −50 80 100 120 V (IF) in (dBµVEMF) S+N VCC = 5 V f (MIX) in = 314.9 MHz f (Lo) in = 304.2 MHz V (Lo) in = 100dBµV AM = 90% fmod = 600 Hz (rectangular wave) LOBS = “H” <Meas point> FILOUT at audio analyzer −20 25°C −30 −40 −50 N −60 −70 −60 0 60 0 −10 110°C 25°C 40 10 (dB) 110°C 20 S/N Characteristics (MIX input) in the AM Mode when Multiplication is Used S + N, N 0 0 IF IN input level VCC = 5 V f (MIX) in = 314.9 MHz f (Lo) in = 40.7 MHz f (Lo) in = 100dBµV Dev = ±20 kHz fmod = 600 Hz LOBS = “H” <Meas point> FILOUT at audio analyzer −40°C 25°C N −80 10 (dB) 100 −70 S/N Characteristics (MIX input) in the AM Mode when Multiplication is Used S + N, N 80 VCC = 5 V f (IF) in = 10.7 MHz AM = 90% fmod = 600 Hz <Meas point> FILOUT at audio analyzer −60 IF IN input level −70 −20 S+N −20 N −60 60 0 −10 −10 −50 40 10 S+N 0 −40 20 S/N Characteristics (IF input) in the AM Mode 10 −30 0 MIX IN input level V (MIX) in (dBµVEMF) S/N Characteristics (IF input) in the FM Mode −20 25°C −40°C 0 −20 120 110°C −80 −40°C 20 40 60 80 100 −90 −20 120 MIX IN input level V (MIX) in (dBµVEMF) 0 20 40 60 80 100 120 MIX IN input level V (MIX) in (dBµVEMF) 16 03-01-23 TA31275FN/ TA31275FNG 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 Mixer Conversion Gain Frequency Characteristics 24 Mixer conversion gain GV (MIX) (dB) 30 Mixer conversion gain GV (dB) 20 110°C 10 25°C 0 f (MIX) in = 314.9 MHz V (MIX) = 60dBµV f (Lo) in = 40.7 MHz V (Lo) in = 100dBµV LOBS = “H” <Meas point> MIXOUT at spectrum analyzer * Terminated with the IF input impedance −10 −40°C −20 −30 −40 −50 1 2 3 Local input level 4 5 6 22 −40°C 20 18 V (Lo) in (dBµV) 1000 Mixer Conversion Gain – Local Input Level Characteristics Mixer conversion gain GV (MIX) (dB) 30 20 10 VCC = 5 V f (MIX) in = 314.9 MHz 0 V (MIX) in = 60dBµV Multiplication is not used f (Lo) in = 40.7 MHz −10 <Meas point> MIXOUT at spectrum Multiplication is used −20 analyzer * Terminated with the IF input impedance −30 50 60 70 80 Local input level 90 100 110 20 −40°C 10 0 −20 110°C −30 V (Lo) in (dBµV) 60 70 (dBµV) 0 Mixer output level V (MIX) out −40°C −5 110°C −10 VCC = 5 V f (IF) in = 50dBµVEMF f (IF) in = 10.7 MHz + ∆f Dev = ±20 kHz fmod = 600 Hz <Meas point> FILOUT at audio analyzer −20 −25 −600 −400 −200 0 Detuning frequency 200 90 100 110 120 V (Lo) in (dBµV) Mixer Intercept Point 160 −15 80 Local input level Detuning Characteristics 25°C VCC = 5 V f (MIX) in = 314.9 MHz V (MIX) in = 60dBµV f (Lo) in = 40.7 MHz LOBS = “H” <Meas point> MIXOUT at spectrum analyzer * Terminated with the IF input impedance 25°C −10 −40 50 120 5 (dB) 500 MIX IN input frequency f (MIX) in (MHz) 30 Attenuation level 25°C 16 V (MIX) in = 60dBµV V (Lo) in = 100dBµV 14 LOBS = “L” (direct input) <Meas point> 12 MIXOUT at spectrum analyzer 10 * Terminated with the IF input impedance 8 100 300 Mixer Conversion Gain – Local Input Level Characteristics Mixer conversion gain GV (MIX) (dB) 110°C VCC = 5 V 400 140 120 100 80 Desired wave 60 Interference wave 40 20 0 40 600 VCC = 5 V f (MIX) in = 314.9 MHz f (Lo) in = 40.7 MHz V (Lo) in = 100dBµV fmod = 600 Hz <Meas point> MIXOUT at spectrum analyzer 60 80 100 120 (kHz) 17 03-01-23 TA31275FN/ TA31275FNG 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 Output – Supply Voltage Characteristics (FM) Demodulation Distortion Characteristics 45 VCC = 5 V f (IF) in = 10.7 MHz Vin = 50dBµV Dev = ±20 kHz AM/FM = “L” <Meas point> FILOUT at audio analyzer * The FILOUT output signal is measured with a noise meter after amplified. −25 40 (mVrms) −20 Demodulation output Demodulation distortion (dB) −15 −30 −35 35 110°C 30 25°C 25 20 −40°C 15 f (IF) in = 10.7 MHz V (IF) in = 50dBµVEMF Dev = ±20 kHz fmod = 600 Hz <Meas point> FILOUT at audio analyzer 10 5 −40 −600 −400 −200 0 200 400 0 1 600 Detuning frequency (IF IN) (kHz) 2 3 Supply voltage 5 4 VCC 6 (V) Waveform Shaping Duty Ratio – Supply Voltage Characteristics FM Mode Waveform shaping output duty ratio DR (%) 54 52 50 110°C 48 46 25°C 44 −40°C 42 f (IF) in = 10.7 MHz V (IF) in = 50dBµVEMF Dev = ±20 kHz fmod = 600 Hz <Meas point> DATA at oscilloscope 40 38 36 34 1 2 3 Supply voltage 4 VCC 5 6 (V) 18 03-01-23 TA31275FN/ TA31275FNG Reference Data (with a broadband ceramic filter (280 k) used) 12-dB SINAD Sensitivity Characteristics – FM Modulation 10 1 0 −1 −2 −3 (dBµVEMF) VCC = 5 V f (RF) in = 314.9 MHz fmod = 600 Hz f (Lo) in = 40.7 MHz V (Lo) in = 100dBµV LOBS = “H” No SAW filter <Meas point> FILOUT at audio analyzer 12-dB SINAD sensitivity 12-dB SINAD sensitivity (dBµVEMF) 2 Sensitivity Detuning Characteristics (AM and FM modulation) −4 −5 −6 −7 0 20 40 60 80 8 6 Dev = ±20 k 4 Dev = ±40 k 2 0 −2 −4 AM Dev = ±60 k −8 −10 314.6 100 FM modulation Dev (kHz) 1.5 1 315 315.1 315.2 VCC = 5 V fmod = 600 Hz f (Lo) in = 40.7 MHz V (Lo) in = 100dBµV LOBS = “H” No SAW filter <Meas point> FILOUT at multi meter 40dBµVMF 30dBµVMF 2 0.5 0 −0.5 1.5 1 0dBµVMF 20dBµVMF 0.5 10dBµVMF −1 −1.5 1 2 3 4 Supply voltage VCC 5 0 314.4 6 10 −10 −20 −30 314.85 10 315 315.15 315.3 315.45 VCC = 5 V f (RF) in = 314.9 MHz fmod = 600 Hz f (Lo) in = 40.7 MHz V (Lo) in = 100dBµV LOBS = “H” No SAW filter <Meas point> FILOUT at audio analyzer S+N 0 −10 S + N, AMR (dB) 0 314.7 S/N and AMR RF Input Characteristics (Dev = ±40 k) VCC = 5 V f (RF) in = 314.9 MHz fmod = 600 Hz f (Lo) in = 40.7 MHz V (Lo) in = 100dBµV LOBS = “H” No SAW filter <Meas point> FILOUT at audio analyzer S+N 314.55 RF IN input frequency f (RF) in (MHz) (V) S/N and AMR RF Input Characteristics (Dev = ±20 k) S + N, AMR (dB) 314.9 S Curve – Supply Voltage Characteristics AFOUT pin voltage (V) (dBµVEMF) 12-dB SINAD sensitivity 2 314.8 2.5 VCC = 5 V Dev = ±20 kHz fmod = 600 Hz f (Lo) in = 40.7 MHz V (Lo) in = 100dBµV LOBS = “H” No SAW filter <Meas point> FILOUT at audio analyzer 2.5 314.7 RF IN input frequency f (RF) in (MHz) 12-dB SINAD sensitivity – Supply Voltage Characteristics 3 Dev = ±80 k −6 VCC = 5 V f (RF) in = 314.9 MHz fmod = 600 Hz f (Lo) in = 40.7 MHz V (Lo) in = 100dBµV LOBS = “H” No SAW filter <Meas point> FILOUT at audio analyzer AMR −40 −20 −30 AMR −40 −50 −50 N −60 −70 −20 −60 0 20 40 60 80 100 −70 −20 120 RF IN input level V (RF) in (dBµVEMF) N 0 20 40 60 80 100 120 RF IN input level V (RF) in (dBµVEMF) 19 03-01-23 TA31275FN/ TA31275FNG Reference Data (with a broadband ceramic filter (280 k) used) Demodulation Output – Supply Voltage Characteristics Waveform Shaping Output Duty Ratio – Supply Voltage Characteristics 60 Dev = ±60 kHz Waveform shaping output duty ratio DR (%) Demodulation output Vod (mVrms) 140 120 100 Dev = ±40 kHz 80 VCC = 5 V f (RF) in = 314.9 MHz fmod = 600 Hz f (Lo) in = 40.7 MHz V (Lo) in = 100dBµV LOBS = “H” No SAW filter <Meas point> FILOUT at mult meter 60 Dev = ±20 kHz 40 20 0 1 2 3 4 Supply voltage 5 VCC VCC = 5 V f (RF) in = 314.9 MHz fmod = 600 Hz f (Lo) in = 40.7 MHz V (Lo) in = 100dBµV LOBS = “H” No SAW filter <Meas point> DATA at oscilloscope 58 56 54 52 50 48 Dev = ±20 k 46 44 Dev = ±40 k 42 40 0 6 1 2 (V) 3 4 Supply voltage VCC 5 6 (V) Reference Data (with a narrowband ceramic filter (150 k) used) 12-dB SINAD Sensitivity – FM Modulation Characteristics 12-dB SINAD Sensitivity – Frequency Characteristics (AM and FM) 10 −2 −3 (dBµVEMF) VCC = 5 V f (RF) in = 314.9 MHz fmod = 600 Hz f (Lo) in = 40.7 MHz V (Lo) in = 100dBµV LOBS = “H” SAW FILTER No SAW filter 12-dB SINAD sensitivity 12-dB SINAD sensitivity (dBµVEMF) −1 −4 −5 −6 −7 0 1 2 3 4 5 8 6 4 Dev = ±40 kHz 2 −2 −4 −6 AM Dev = ±20 kHz −8 −10 314.7 314.75 314.8 314.85 314.9 314.95 315 315.05 315.1 6 FM modulation (kHz) RF IN input frequency f (RF) in (MHz) 12-dB SINAD Sensitivity – Supply Voltage Characteristics S Curve – Supply Voltage Characteristics 2.5 VCC = 5 V f (RF) in = 314.9 MHz Dev = ±20 kHz fmod = 600 Hz f (Lo) in = 40.7 MHz V (Lo) in = 100dBµV LOBS = “H” No SAW filter <Meas point> FILOUT at audio analyzer −1 −1.5 −2 −2.5 −3 50dBµVEMF 2 AFOUT pin voltage (V) 12-dB SINAD sensitivity (dBµVEMF) 0 −0.5 VCC = 5 V f (RF) in = 314.9 MHz fmod = 600 Hz f (Lo) in = 40.7 MHz V (Lo) in = 100dBµV LOBS = “H” SAW FILTER No SAW filter <Meas point> FILOUT at audio analyzer 0 −3.5 −4 40dBµVEMF 10dBµVEMF 1.5 VCC = 5 V fmod = 600 Hz f (Lo) in = 40.7 MHz V (Lo) in = 100dBµV LOBS = “H” No SAW filter <Meas point> FILOUT at multi meter 30dBµVEMF 1 20dBµVEMF 0dBµVEMF 0.5 −4.5 −5 1.5 2.5 3.5 Supply voltage 4.5 VCC 0 314.4 5.5 314.55 314.7 314.85 315 315.15 315.3 315.45 RF IN input frequency f (RF) in (MHz) (V) 20 03-01-23 TA31275FN/ TA31275FNG Reference Data (with a narrowband ceramic filter (150 k) used) S/N and AMR RF Input Characteristics (Dev = ±20 k) 10 −10 −20 −30 AMR N −50 VCC = 5 V f (RF) in = 314.9 MHz fmod = 600 Hz f (Lo) in = 40.7 MHz V (Lo) in = 100dBµV LOBS = “H” No SAW filter <Meas point> FILOUT at audio analyzer S+N 0 S + N, N, AMR (dB) 0 S + N, N, AMR (dB) 10 VCC = 5 V f (RF) in = 314.9 MHz fmod = 600 Hz f (Lo) in = 40.7 MHz V (Lo) in = 100dBµV LOBS = “H” No SAW filter <Meas point> FILOUT at audio analyzer S+N −40 S/N and AMR RF Input Characteristics (Dev = ±40 k) −10 −20 −30 −40 AMR N −50 −60 −60 −20 0 20 40 80 60 100 −70 −20 120 RF IN input level V (RF) in (dBµVEMF) 0 20 40 60 80 100 120 RF IN input level V (RF) in (dBµVEMF) Waveform Shaping Output Duty Ratio – Supply Voltage Characteristics Waveform shaping output duty ratio DR (%) 60 VCC = 5 V f (RF) in = 314.9 MHz V (RF) in = 20dBµV fmod = 600 Hz f (Lo) in = 40.7 MHz V (Lo) in = 100dBµV LOBS = “H” No SAW filter <Meas point> DATA at oscilloscope 58 56 54 52 50 48 46 Dev = ±20 44 42 40 1 Dev = ±40 2 3 Supply voltage 4 VCC 5 6 (V) 21 03-01-23 TA31275FN/ TA31275FNG Application Circuit (FSK) L5 33 nH SAW RF IN 1000 pF C10 R5 1 kΩ C8 6 pF C9 C12 C22 6 pF 0.01 µF 1000 pF 27 nH 1 kΩ L4 C15 C13 C11 > = C15 0.1 µF 1000 pF R6 VCC C17 1000 pF 3300 pF 68 kΩ R9 68 kΩ R8 R10 68 kΩ C19 560 pF C20 0.01 µF C18 VCC 22 20 19 18 17 16 15 14 13 21 24 23 LPF LPF AF RSSI REF AM/FM MIX GND1 RF CHARGE RF RF OUT IN OUT IN OUT DEC IN AM/FM RSSI Comparator ×8 VCC VCC 0.1 µF R4 C7 4.7 kΩ Detector C6 QUAD VCC2 DATA 10 11 12 R3 BPF 9 0.1 µF VCC BS 0.01 µF C3 VCC VCC 0.1 µF 5 IF DEC GND2 6 7 8 C5 3.6 kΩ C108 56 pF R102 10 pF IF IN VCC1 C2 0.1 µF C107 10 pF 47 pF R100 120 kΩ C103 C106 33 kΩ 0.1 µF X1 40.7 MHz R101 C101 0.01 µF 10 µF C100 C109 OSC VCC MIX IN LOBS OUT Lo 4 1 2 3 100 kΩ Detector VCC VCC DATA CF: SFELA10M7FA00-B0 (Murata Mfg. Co., Ltd.)--broadband (280 k) SFELA10M7JAA0-B0 (Murata Mfg. Co., Ltd.)--narrowband (150 k) LC: P-5DJ (Sumida Corporation) 22 03-01-23 TA31275FN/ TA31275FNG Application Circuit (ASK) C12 6 pF 0.01 µF C8 6 pF RF IN 1000 pF C10 R5 1 kΩ L5 33 nH SAW C9 27 nH 1 kΩ 0.1 µF 0.1 µF C13 To pin 9 C11( > = C15) 68 kΩ 36 kΩ L4 1000 pF C15 R10 68 kΩ C19 560 pF C20 0.01 µF R9 R6 3300 pF C18 VCC 24 23 22 21 20 19 18 17 16 15 14 13 LPF LPF AF RSSI REF AM/FM MIX GND1 RF CHARGE RF RF OUT IN OUT OUT DEC IN IN AM/FM RSSI Comparator ×8 Detector QUAD VCC2 DATA 10 11 12 C7 100 kΩ 9 MiR4 BS 0.01 µF C6 5 IF DEC GND2 6 7 8 VCC VCC DATA VCC VCC BPF VCC To pin 19 VCC 10 µF 3.6 kΩ C108 10 pF IF IN VCC1 C3 0.1 µF C2 0.1 µF C107 10 pF 47 pF R100 120 kΩ C103 C106 OSC VCC MIX IN Lo LOBS OUT 1 2 3 4 56 pF 33 kΩ R101 0.1 µF 40.7 MHz X1 C101 0.01 µF 10 µF C100 C109 VCC CF: SFELA10M7FA00-B0 (Murata Mfg. Co., Ltd.)--broadband (280 k) SFELA10M7JAA0-B0 (Murata Mfg. Co., Ltd.)--narrowband (150 k) 23 03-01-23 TA31275FN/ TA31275FNG Package Dimensions Weight: 0.09 g (typ.) 24 03-01-23 TA31275FN/ TA31275FNG 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. 25 03-01-23