CXA3117 Sony Corporation, CXA3117 Datasheet
CXA3117
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CXA3117 Summary of contents
Page 1
... IF Amplifier for M-ary FSK Pagers Description The CXA3117AN is a low current consumption FM IF amplifier which employs the newest bipolar process suitable for M-ary FSK pagers. Features • Low current consumption: 1.1mA (typ 1.4V) CC • Low voltage operation 1.1 to 4.0V CC • Small package 24-pin SSOP • ...
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... 25k GND GND – 2 – CXA3117AN Description Connects the external parts of crystal oscillator circuit. A capacitor and crystal oscillator are connected to these pins and V CC Mixer output. Connect a 455kHz ceramic filter between this pin and IF IN. Power supply. IF limiter amplifier input. ...
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... GND 14 72 20k 100k GND – 3 – CXA3117AN Description Connects the phase shifter of FM detector circuit. Connects the capacitor that determines the LPF cut-off. Switches the LPF cut-off. Cut-off is decreased by setting this pin high. (Applied voltage range: –0.5V to +7.0V) RSSI circuit output ...
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... GND V CC 78k 1k 22 22k GND – 4 – CXA3117AN Description Level comparator, NRZ comparator and LVA comparator outputs. They are open collectors. (Applied voltage range: –0.5V to +7.0V) Level comparator and NRZ comparator inputs. The filter circuit output is connected. Controls the battery saving. ...
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... CXA3117AN = 30%) MOD Max. Unit 1. µA — dB 0.4 V 5.0 µ — µA 0.4 V 1.05 V 1.15 V 5.0 µA 0 mVrms — V 0.35 V — ...
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... Vin – 6 – 15p 1µ 8. 1.4V Measurement circuit 2 50µ 1.4V Measurement circuit 4 CXA3117AN 1200p 14 13 Vin ...
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... Vin 0. – 7 – CXA3117AN V2 100k 1.4 to 1.0V Measurement circuit 6 V2 100k ...
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... CXA3117AN ...
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... Application Note 1) Power Supply The CXA3117AN, with the built-in regulator, is designed to permit stable operation at the wide range of supply voltage from 1.1 to 4.0V. Decouple the wiring Oscillator Input Oscillator input method a) Using Pins 1 and 2, input self-excited oscillation signal through the composition of a Colpitts type crystal oscillator circuit ...
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... Quick Charge In order to hasten the rising time from when power is turned on, the CXA3117AN features a quick charge circuit. Therefore, the quick charge circuit eliminates the need to insert a capacitor between the detector output and the LPF as is the case with conventional ICs, but a capacitor should be connected to Pin 7 to determine the average signal level during steady-state reception ...
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... AUDIO (Pin 16) through the internal primary LPF. The AUDIO output is the anti-phase output to the NRZ OUT. The CDBM455C50 (MURATA MFG. CO., LTD.) ceramic discriminator is recommended for the CXA3117AN. For the 2-level system, the CDBM455C28 can also be used. The detector output level is changed according to the resistance value connected to Pin 8. ...
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... External capacitance (Pin 9 to Pin 11 (Hz) — 430 512bps (2 levels) 950 1200bps (2 levels) 1900 2400bps (2 levels) 1000 1600bps (2 levels) 2000 3200bps (2 levels) 1000 3200bps (4 levels) 2000 6400bps (4 levels CMOS power supply 4 CC (15) 19 Comparator output Fig. 6 – 12 – Data rate — CMOS IC CXA3117AN ...
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... CMOS device. The setting voltage of the LVA is 1.10V (typ.), and it possesses a hysteresis with respect to the supply voltage. The hysteresis width is 10mV (typ.). 11) B.S. Operation of the CXA3117AN can be halted by setting this pin low. This pin can be connected directly to CMOS device. The current consumption during battery saving is 10µA or less (at 1.4V). Input signal – ...
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... For the 2-level FSK demodulation, it corresponds to a conventional NRZ comparator output (When the input frequency is higher than the local frequency (The polarity can be inverted by setting the local frequency higer than the input frequency – 14 – CXA3117AN for the level CC ...
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... The level comparator threshold value can be adjusted by varying the detector output level, which is achieved by varying the discriminator dumping resistance. (AC gain adjustment) Offset correction circuit Level comparator threshold value 1 NRZ threshold value = Demodulated signal average voltage Level comparator threshold value 2 AC gain adjustment – 15 – CXA3117AN Level comparator 1 NRZ comparator Level comparator 2 ...
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... Also, even if the offset is within the allowable range, the output pulse duty changes until the offset is 0. NRZ threshold value offset Level comparator threshold value 1 NRZ threshold value offset Level comparator threshold value 2 – 16 – CXA3117AN ...
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... BUF in Fig the detector buffer amplifier and COMP is the level comparator or the NRZ comparator. The CXA3117AN has a feedback loop from the comparator input to the input circuit of the detector output buffer. This equalizes the average value of the comparator input voltage to the reference voltage, with the quick charge circuit of CHG being set in the feedback loop ...
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... CHG OFF (Pin 14 CHG OFF Pin 7 charge current control Slow charge off Slow charge operation Sync part Data Fig. 9 – 18 – 17 B.S. CHARGE Battery saving mode Pin 7 charge speed control control IC operation Quick charge Sleep Slow charge Sync part Data CXA3117AN 18 ...
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... When the REF capacitance is 1µF, the S curve hold voltage variation is a value that has no effect on the rise of the 4-level data after 5 minutes of battery saving as shown below. Offset voltage after 5 minutes of battery saving: 10mV or less When the REF capacitance is 1µF – – 19 – CXA3117AN [kHz] ...
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... RF system circuit and decoder connected to the IF IC, etc. Adjust the sensitivity according to the following procedures. a) MIX IN matching When using a matching circuit between the RF system circuit and MIX IN of the CXA3117N, adjust the trimmer to obtain the optimal sensitivity while monitoring the AUDIO output. b) Local input level The mixer circuit gain is dependent on the local signal input level to OSC IN. The input level to OSC IN should be set as high as possible within the range of – ...
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... Detector output level The NRZ comparator and level comparator threshold values are fixed for the CXA3117AN. In the case of 4- level signals, the relationship between the level comparator threshold value and the detector output level affects the sensitivity. The detector output level can be adjusted by the resistance attached to Pin 8. ...
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... Standard Board Layout 19)-2. Mode Switch Description Low Slow charge High Quick charge CHARGE V GND XTAL DISC 1 12 3117 EVALUATION BOARD L Sleep H IC operation fc: High H fc: Low FIL SW – 22 – CXA3117AN L Slow charge operation H Slow charge off CHG-OFF ...
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... DD100 series temperature characteristics type B (MURATA PRODUCTS) 25V 1µ 25V 10µ EL0405 (TDK Products) 2SA1015 KSS 2B (KINSEKI, LTD.) – 23 – CXA3117AN NOTE E12 series 1/8W TRIMMER CAPACITOR CERAMIC CAPACITOR E12 series (high dielectric constant type) ELECTROLYTIC CAPACITOR E6 series E12 series 2.5mm pitch ...
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... Switch S1, S2, S3, S4 (FUJISOKU CORPORATION) Connector RF (HIROSE ELECTRIC CO., LTD.) Pin 2 6 CFWS455D (MURATA PRODUCTS) CDBM455C50 (MURATA PRODUCTS) ATE1D-2M3-10 HRM300-25 Mac 8 test pin ST-1-3 (Mac eight) Mac 8 test pin LC-2-G (Mac eight) – 24 – CXA3117AN 455kHz 1.5kΩ 455kHz ON – poles) SMA CONNECTOR L = 10mm 0.8 ...
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... RSSI 800 600 400 = 1.4V CC 200 0 –40 –30 – 21.7MHz 21.245MHz –6dBm 21.725MHz 21.750MHz The I/O level is for the values read at I/O pin with the spectrum analyzer –50 –40 –30 –20 –10 0 Mixer input level [dBm] CXA3117AN ...
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... Variable cut-off characteristics of audio filter 0 –10 –20 –30 –40 –50 –60 100 200 500 1k Input frequency [Hz] Level comparator characteristics 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 150 200 Comparator input voltage [mV] – 26 – f 21.7MHz –60dBm RF f 21.245MHz LO 0.01µ – Pin 12 voltage 10k 250 300 CXA3117AN ...
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... Typical value when Pin 6 is shorted to Vcc 100 0 0.5 1.0 1.5 Pin 6 current [µA] NRZ comparator characteristics 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 160 180 200 Comparator input voltage [mV] LVA characteristics 1.2 1.0 0.8 0.6 0.4 0.2 0 1.05 1.10 Supply voltage [V] – 27 – Representative example using typical sample 2.0 2.5 3.0 220 240 260 1.15 1.20 CXA3117AN ...
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... Fast mode Slow mode on Slow mode off 200 240 280 320 –80 –70 –60 –50 –40 RF input level [dBm] – 28 – CXA3117AN –30 –50 360 : –20°C : 0°C : 25°C : 50°C : 75°C –30 –20 ...
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... Detector output level and level comparator threshold value vs. Temperature characteristics 4.8kHz Dev. detector output level 100 Level comparator threshold value for positive side 50 1.6kHz Dev. detector output level 0 Level comparator threshold value for negative side –50 –100 – Temperature [°C] – 29 – CXA3117AN ...
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... SSOP(PLASTIC 0.65 + 0.1 b=0.22 – 0.05 (0.22) DETAIL B : SOLDER NOTE: Dimension “ ” does not include mold protrusion. PACKAGE STRUCTURE PACKAGE MATERIAL SSOP-24P-L01 LEAD TREATMENT SSOP024-P-0056 LEAD MATERIAL PACKAGE MASS – 30 – CXA3117AN + 0.2 1.25 – 0.1 0.1 b=0.22 ± 0.03 DETAIL B : PALLADIUM EPOXY RESIN SOLDER/PALLADIUM PLATING 42/COPPER ALLOY 0.1g ...