TA31273FN TOSHIBA | Alldatasheet

Document overview

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Technical content

Features

  • RF frequency: 240 to 450 MHz
  • IF frequency: 10.7 MHz
  • Operating voltage range: 3.0 to 5.5 V
  • Current dissipation: 6.8 mA (typ.) (Not operating local oscillator)
  • Current dissipation at BS: 0 µA (typ.)
  • Small package: 20-pin SSOP (0.65-mm pitch) Block Diagram Weight: 0.09 g (typ.) 102 1 3 4 5 6 7 8 9 1119 20 18 17 16 15 14 13 12 SAW RSSI Comparator FIL IN FIL OUT RSSI BS MIX IN GND1 RF DEC MONI RF IN DATAGND2REF IF DEC IF INVCC2 MIX OUTLOBSVCC1 OSC IN RF OUT

Pin Function (The Values Of Resistor And Capacitor In The Internal Equivalent Circuit Are Typical.) Pin No. Pin Name Function Inter nal Equivalent Circuit 1 OSC IN Local oscillator input pin. 2 V CC1 Power supply pin 1. 

3 LOBS

Lo switch pin. H: x8 circuit in operation Lo: Through pass 4 MIX OUT Mixer output pin. 5 V CC2 Power supply pin 2.  6 IF IN IF amp input pin. 7 IF DEC IF amp input pin. Used as a bias coupling pin. 8 REF AM comparator REF pin. 9 GND2 GND pin 2. 

10 DATA

AM waveform shaping output pin. Open collector output. Connect a pull-up resistor. 6 7 170 Ω 170 Ω 3 kΩ 210 Ω 2 pF 15 kΩ 5 kΩ 5 kΩ 15 kΩ 5 kΩ 60 kΩ 3 2 kΩ 10 40 kΩ 40 kΩ COMP DATA 500 Ω 5.5 kΩ

No. Pin Name Function Inter nal Equivalent Circuit 11 RF IN RF signal input pin. 12 RF DEC Emitter pin for internal transistor. 14 RF OUT RF amp output pin.

13 MONI Since this pin is connected to an internal circuit, it

should either be left open or connected to GND. 15 GND1 GND pin 1.  16 MIX IN Mixer input pin. 17 BS Battery saving pin. 18 RSSI RSSI output pin. 19 FIL IN AM LPF input pin. 20 FIL OUT 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. 3 kΩ 50 kΩ 17 2.4 kΩ 500 Ω 20 kΩ 20 kΩ 500 Ω5.5 kΩ

  1. Waveform shaper circuit (comparator) The output data (pin 10) are inverted. 2. RSSI function DC potential corresponding to the input level of IF IN (pin 6) is output to RSSI (pin 18). Output to RSSI (pin 18) is converted to a voltage by the internal resistance. Thus, connecting external resistance R to pin 18 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, the temperature characteristic of the RSSI output may change. Also, the maximum RSSI value should be V CC − 1 V. F i g u r e 1 F i g u r e 2 3. V CC pin and GND pin Use the same voltage supply source for VCC1 (pin 2) and VCC2 (pin 5) (or connect them). Also, use the same voltage supply source for GND1 (pin 15) and GND2 (pin 9) (or connect them). 4. Local oscillator circuit The local oscillator circuit is external-input-only. Input to pin 1 at a level from 95 to 105dBµV. By switching the Lo switch (LOBS), the frequency set by the external circuit can be used as-is without using the x8 circuit. Lo Switch (LOBS) H L Local oscillation status x8 circuit in operation x8 circuit halted/through pass 5. RF amp current adjustment 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 800 µA. Figure 3 R RF DEC 20 kΩ R IF input level After R is connected
  1. Battery-saving (BS) function and Lo switch LOBS function The IC incorporates a battery-saving function and a Lo switch function. These functions offer the following selection. BS Pin/LOBS Pin Circuit Status in the IC IC Current Dissipation (at no signal) H/H Circuits in operation
  • x8 circuit
  • Mixer
  • RF amp
  • Comparator
  • IF amp
  • RSSI
  • Comparator capacitor charger circuit 6.8 mA (typ.) H/L x8 circuit only halted, Frequency set by external circuit can be used as-is. 3.8 mA (typ.) L/H x8 circuit only in operation 3.0 mA (typ.) L/L All circuits halted 0 mA (typ.) 7. RF amp gain 1 RF amp gain 1 (GV (RF) 1) is a reference value calculated as follows. Measure GRF in the following figure. F i g u r e 4 G V (RF) 1 is calculated as follows: GV (RF) 1 = GRF − GV (MIX) 8. IF amp gain The intended value is 70dB. 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. 27 nH 1000 pF 1 kΩ 4 6 16 14 11 33 nH SAW 0.01 µF SG 50dBµV GRF 6 pF 6 pF
  1. 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 (20 kΩ).) R9 R8 C14 C13 1200 bps 47 k Ω 68 k Ω 1500 pF 4700 pF 2400 bps 47 k Ω 68 k Ω 680 pF 2200 pF 4800 bps 47 k Ω 68 k Ω 390 pF 1000 pF When the filter constants shown below are used, it is not necessary to set the R9 constant value. R9 R8 C14 C13 1200 bps  20 k Ω 2200 pF 6800 pF 2400 bps  20 k Ω 1500 pF 3300 pF 4800 bps  20 k Ω 820 pF 1800 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. Quadratic filter (NRZ) (The bit rate filter time constant takes in to account the internal resistance RSSI (20 kΩ).) R10 R9 R8 C16 C14 C13 1200 bps 47 k Ω 68 k Ω 68 k Ω 3300 pF 560 pF 0.01 µF 2400 bps 47 k Ω 68 k Ω 68 k Ω 1500 pF 270 pF 4700 pF 4800 bps 47 k Ω 68 k Ω 68 k Ω 680 pF 150 pF 2200 pF When the filter constants shown below are used, it is not necessary to set the R10 constant value. R10 R9 R8 C16 C14 C13 1200 bps  20 k Ω 20 k Ω 8200 pF 2200 pF 0.033 µF 2400 bps  20 k Ω 20 k Ω 3900 pF 1000 pF 0.015 µF 4800 bps  20 k Ω 20 k Ω 1800 pF 470 pF 6800 pF

Maximum Ratings (Unless Otherwise Specfied Ta = 25°C, Voltage Value is Determined by GND (TYP)) Characteristics Symbol Rating Unit Supply voltage V CC 6 V Current dissipation P D 710 mW Operating temperature range T opr −40~85 °C Storage temperature range T stg −55~150 °C The maximum ratings must not be exceeded at any time. Do not operate the device under conditions outside the above ratings. Operating available Range (Unless Otherwise Specified Ta = 25Ž, Voltage Value is Determined by GND(typ.)) Characteristics Symbol Test Circuit Test Condition Min Typ. Max Unit Operating voltage range V CC   3.0 5.0 5.5 V 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 = 5.0V , Rfin = 314.9 MHz, AM = 90%,Ifin = 10.7MHz , af = 600 Hz (square wave)) Characteristics Symbol Test Circuit Test Condition Min Typ. Max Unit Current dissipation at no signal I ccq 2 VCC = 5.0 V, BS/LOBS =gH/Hh Fin (LO) = 40.7 MHz 5.1 6.8 8.5 mA Current dissipation at battery saving I cco 3   0 5 µA RF amp gain 1 G V (RF) 1  V in (RF) = 50dBµV  20  dB RF amp gain 2 G V (RF) 2 1 (5) 50 Ω input/output −6.5 −3.5 −0.5 dB RF amp input resistance R (RF) IN    900  Ω RF amp input capacitance C (RF) IN    2.5  pF RF amp output capacitance C (RF) OUT    2  pF Mixer conversion gain G V (MIX) 1 (6)  17.5 21.5 25.5 dB Mixer input resistance R (MIX) IN    1.5  k Ω Mixer input capacitance C (MIX) IN    2.5  dB Mixer output resistance R (MIX) OUT    330  Mixer intercept point IP3    93  dB µV IF operating frequency f IF    10.7  MHz IF amp input resistance R (IF) IN    330  Ω RSSI output voltage 1 V RSSI1 1 (1) Vin (IF) = 35dBµVEMF 0.1 0.3 0.5 V RSSI output voltage 2 V RSSI2 1 (1) Vin (IF) = 65dBµVEMF 0.95 1.20 1.45 V RSSI output voltage 3 V RSSI3 1 (1) Vin (IF) = 100dBµVEMF 1.9 2.3 2.7 V RSSI output resistance R RSSI   15 20 25 k Ω Waveform shaping output duty cycle DR 1 (2) Vin (IF) = 80dBµVEMF for single-tone 45 50 55 % Data output voltage (L level) V DATAL 1 (3) I DATAL = 1 mA   0.4 V Data output leakage current (H level) I DATAH 1 (4)    2 µA BS pin H-level input voltage    2.7  5.5 V BS pin L-level input voltage    0  0.2 V LOBS pin H-level input voltage    2.7  5.5 V LOBS pin L-level input voltage    0  0.2 V

(1) V RSSI (2) D R (3) V DATA L (4) I DATA H SG 6 18 V 62 Ω 0.01 µF 1000 pF SG 6 10 62 Ω 0.01 µF 100 kΩ VCC V V 2.5 V 3.0 V

10 VCC

V R = 4.7 kΩ

10 V CC

I = V/100 × 103 V 100 kΩ V 2.5 V 3.0 V 1021 3 4 5 6 7 8 9 111920 18 17 16 15 14 13 12 RSSI COMP FIL IN FIL OUT RSSI BS MIX IN GND1 RF DEC MONI RF IN DATAGND2REF IF DEC IF INVCC2 MIX OUTLOBSVCC1 OSC IN 100 kΩ 0.01 µF 0.01 µF 0.01 µF 0.01 µF 560 pF 68 kΩ 68 kΩ 3300 pF 47 kΩ 1 kΩ 1000 pF 27nH 1 kΩ VCC VCC DATA R15 C22 C21 C17 C15 VCC C13 C14 R10 C16 R13 1000 pF R14 C24 C25 0.22 µF VCC RF OUT 6 pF 1000 pF C20 0.01 µF C23 VCC VCC 0.01 µF BPF

(5) G v (RF) 2 (6) G V (MIX) Test Circuit 2 I ccqam Test Circuit 3 I cco SG 11 14 51 Ω 1000 pF 51 Ω 1000 pF VCC 14 5 2 15 129 A 1 kΩ SG 51 Ω 0.01 µF 0.01 µF SG 51 Ω 1000 pF 145 17 2 15 1 1 kΩ A 51 kΩ 0.01 µF SG

Reference dataiThis is temperature characteristics data when it used evaluation boards. This is not guarantee on condition that it is stating except electrical characteristics. j Mixer conversion gain Gv (Mix) (dB) Power supply voltage V CC (V) Current consumption vs. Power supply voltage characteristics Current consumtion I ccq (mA) Power supply voltage V CC (V) Current consumption vs. Power supply voltage characteristics Current consumtion I ccq (mA) Power supply voltage V CC (V) RF amp gain vs. Power supply voltage characteristics RF amp gain 2 Gv (RF) 2 (dB) Power supply voltage V CC (V) Mixer conversion gain vs. Power supply voltage characteristics Power supply voltage V CC (V) Mixer conversion gain vs. Power supply voltage characteristics Mixer conversion gain Gv (Mix) (dB) 0 1 2 3 4 5 6 25°C 100°C −40°C Fin (Lo) = 40.7 MHz Vin (Lo) = 100 dBµV BH: H LOBS: H −50 −10 −20 −30 −40 2 3 4 5 6 25°C 100°C −40°C Fin (RF) = 314.9 MHz Vin (RF) = 50 dBµV −30 1 2 3 4 5 6 −20 −10 Fin (MIX) = 314.9 MHz Vin (MIX) = 50 dBµV Fin (Lo) = 40.7 MHz Vin (Lo) = 100 dBµV LOBS: H 25°C 110°C −40°C −40 1 2 3 4 5 6 −30 −20 −10 −40°C 25°C 110°C Fin (MIX) = 314.9 MHz Vin (MIX) = 50 dBµV Fin (Lo) = 304.2 MHz Vin (Lo) = 100 dBµV LOBS: L 0 1 2 3 4 5 6 All internal circuits used Multiplier circuit turned off and external circuit used Only multiplier circuit used BS Fin (Lo) = 40.7 MHz Vin (Lo) = 100 dBµV Ta = 25°C RSSI output voltage VRSSI (V) MIX IN input level V in (dB µVEMF) RSSI output voltage characteristics (MIX input) −20 0 20 40 60 80 120 1.5 100 2.5 110°C 25°C −40°C Fin (MIX) = 314.9 MHz Fin (Lo) = 40.7 MHz Vin (Lo) = 100 dBµV 0.5

RSSI output voltage VRSSI (V) Local input level V LO ( d BµV) Mixer conversion gain vs. Local input level characteristics Mixer conversion gain Gv (Mix) (dB) IF IN input V in (IF) (dB µVEMF) S/N characteristics (IF input) S + N, N (dB) Power supply voltage V CC (V) FSK duty cycle vs. Power supply voltage characteristics FSK duty cycle DR (% ) IF IN input level V in (dB µVEMF) RSSI output voltage characteristics (IF input) Input frequency Fin (MIX) (MHz) Mixer conversion gain frequency characteristics Mixer conversion gain Gv (MIX) (dB) 100 1000 VCC = 5 V Vin (MIX) = 50 dBµV Vin (Lo) = 100 dBµV LOBS = “L” * Terminate the IF input impedance. 110°C 25°C −40°C Fin (MIX) = 314.9 MHz Vin (MIX) = 50 dBµV Fin (Lo) = 40.7 MHz −15 60 70 80 90 100 110 120 −10 110°C 25°C −40°C −10 10 30 50 70 90 130 110 −40°C 25°C 110°C −40°C 110°C 25°C Fin (IF) = 10.7 MHz AM = 90% Fmod = 600 Hz 60.0 40.0 50.0 45.0 55.0 −40°C 25°C 110°C Fin (IF) = 10.7 MHz Vin (IF) = 50 dBµVEMF AM = 90% Fmod = 600 Hz 3.0 40.0 0 20 40 60 80 120 1.0 2.5 2.0 1.5 0.5 100 −40°C 25°C 110°C Fin (IF) = 10.7 MHz

X1 FTR-1iTokyo Denpa Co., Ltd.j BPFFSFE10.7MA5-AiMurata Manufacturing Co., Ltd.j SAWFSAFCH315MSM0T00B0SiMurata Manufacturing Co., Ltd.j 10 2 1 3 4 5 6 7 8 9 11 19 20 18 17 16 15 14 13 12 SAW RSSI Comparator FIL IN FIL OUT RSSI BS MIX IN GND1 RF DEC MONI RF IN DATA GND2 REF IF DEC IF INVCC2 MIX OUTLOBSVCC1 OSC IN 100 kΩ 0.01 µF 0.01 µF

40.7 MHz

0.01 µF 1 pF 120 kΩ 3.3 kΩ 0.01 µF 33 kΩ 0.01 µF 560 pF 68 kΩ 68 kΩ 3300 pF 47 kΩ 1 kΩ 33 nH 1000 pF 27nH 1 kΩ VCC BPF VCC DATA R15 C22 C21 C17 C15 VCC 10 µF 56 pF 47 pF R3 C2 C13 C14 R10 C16 R13 1000 pF R14 C24 C25 6 pF RF IN 0.22 µF VCC RF OUT 6 pF 1000 pF C20 0.01 µF C23 VCC VCC

Weight: 0.09 g (typ.)

  • 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 inhe rent electrical sensitivity and vulnerability to physical stress. It is the responsibility of t he 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 s pecified operating ranges as set forth in the most recent TOSHI BA products specifications. Also, pl ease keep in mind the precautions and conditions set forth in the “Handling Guide for Semicond uctor Devices,” or “TOSHIBA Semiconductor Reliability Handbook” etc..
  • The TOSHIBA products listed in this document are inte nded for usage in general electronics applications (computer, personal equipment, office equipment, measuri ng 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 malfunc tion or failure of which may cause loss of human life or bodily injury (“Unintended Usage”). Unintended Usage include atomic energy control in struments, airplane or spaceship instruments, transportation instruments, traffic signa l instruments, combusti on control instruments, medical instruments, all types of safety devices, et c.. Unintended Usage of TOSHIBA products listed in this document shall be made at the customer’s own risk.
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  • The information contained herein is subject to change without notice. 000707EBARESTRICTIONS ON PRODUCT USE