cxa1744ar Sony Electronics, cxa1744ar Datasheet
cxa1744ar
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cxa1744ar Summary of contents
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... IF Amplifier for Digital Cordless Telephone For the availability of this product, please contact the sales office. Description The CXA1744AR amplifier IC designed for digital cordless telephone of Europe, CT-2. Features • Mixer, RSSI, detector, and various other functions required of a digital cordless phone IF amplifier. ...
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... REF NC MULTIOUT MULTI NC NC OSCC OSCB OSC LIM IF RSSIOST RSSI REG DET COMP1 OPAMP —2— CXA1744AR LIMOUT QDIN RSSIOST RSSIOUT REGOUT1 V CC COMP2 FCOMPIN FCOMPINX FCOMPOUT VREF SAMPLE CURREF COMP3 GND ...
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... GND GND —3— CXA1744AR Description GND for the MIX, OSC, and MULTI circuits. Power save control. Power save mode for Low; power save function executes on all circuits except the OSC circuit and a part of the REG circuit. Data slicer comparator output. ...
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... GND V CC 129 17 129 18 GND —4— CXA1744AR Description Sample-and-hold circuit input. ICOMPIN is for in-phase input. ICOMPINX is for out-of-phase input. Sample-and-hold circuit output. GND for circuits other than the MIX, OSC, MULTI, and RSSI circuits. Adjustment for RSSI output current. ...
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... GND RSSIV CC 24 GND —5— CXA1744AR Description Power supply for circuits other than the MIX, OSC, MULTI, and RSSI circuits. Internal bias regulator output. A stabilized bias voltage can be obtained. RSSI current output. A voltage output is obtained when a resistor is connected between this pin and GND ...
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... Sample mode for open or High; hold 50k mode for Low. 10k 32 GND IF amplifier input. Input the signal RSSIV CC from MIX to IFIN. Connect a 50k decoupling capacitor to IFP1 and 35 330 IFP2. 34 50k 33 GND Power supply for the MIX, OSC, and MULTI circuits. —6— CXA1744AR Description ...
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... GND Multiplier current output. MIXV CC Connect a tank circuit between this 44 pin and power supply. GND The Colpitts-type oscillation circuit is composed by connecting a crystal MIXV CC oscillator. 10k 10k Input to the OSCC pin when using an external oscillator. DET GND —7— CXA1744AR Description ...
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... IN F =36kHz, f =±25kHz MOD DEV 1 S9 IL=300µ 1=1.1V, Isink=5mA Measured value 1=DC level 1.3V IN Rectangular wave of 100kHz, 0.5V RL=1K , CL=20PF For Vref=1.3V —8— CXA1744AR Min. Typ. Max. Unit I7 6.4 8.4 11 — 0.2 0 15.5 18 20.5 dB 240 330 420 240 330 420 ...
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... Measured value 2=DC level 1.3V IN Rectangular wave of 100kHz, 0.5V RL=4.7k , CL=20pF For Vref=1.3V Measured value/2 S5 S11 For hold S11 Sample Hold (For S11 OFF ON) Sample Hold S5 (For S11 OFF ON), VS=1.1V —9— CXA1744AR Min. Typ. Max. Unit 16pin — 0.2 0 — — 1.0 µA I6 -200 -70 — nA — ...
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... IP3 fin=150.05MHz fin=150.05MHz SBB conversion RL=470 , difference to Pin 29 open For input signal OFF/ON For input signal ON/OFF For burst operation For burst operation For MIXIN input (50 LC matching) (50 LC matching) —10— CXA1744AR (V =3.0V, Ta=25°C) CC Min. Typ. Max. Unit — 200 — mV P-P — ...
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... Electrical Characteristics Measurement Circuit —11— CXA1744AR ...
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... CXA1744AR ...
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... RF input frequency (Hz amplifier voltage gain frequency characteristics amplifier input level = -60dBm amplifier input frequency (Hz) Detector output frequency characteristics 0 – 10.7MHz, -10dBm LIM f = ±25.4kHz DEV 1k Audio frequency (Hz) —13— CXA1744AR 100M 1000M 10M 100M 10k 100k ...
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... Built-in OSC used DETOUT LO -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 RF input level (dBm) Supply voltage vs. Current consumption 10 8 For operating Supply voltage (V) —14— +25° C –20° C +75° C -40 -20 0 S+D+N D+N S+D+N N For power saving 5 6 CXA1744AR ...
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... I-V conversion circuit to Pin 21. Notes of Operation Take care of the followings because the CXA1744AR has the IF amplifier voltage gain of approximately 34 dB and limiter amplifier voltage gain of approximately 67 dB and uses high frequency. 1. Use as wide pattern as possible for the power supply line and GND, and insert a by-pass capacitor as close to them as possible ...
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... Pin 44 externally. Wire the resonance circuit as close to Pin 44 as possible. 4) Mixer The CXA1744AR mixer is of double balanced type. Its input is at Pins 38 and 39; when input from Pin 39, Pin 38 should be grounded with a capacitor. 5) 10.7 MHz filter The mixer output impedance and IF amplifier input impedance are approximately 330 output impedance and limiter amplifier input impedance are approximately 460 with matching ...
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... High/Low and this comparator can form a part of a sample-and-hold circuit. The rise time of the demodulated signal during burst operating can be shortened. 9) PSX This is the power save control pin (Pin 2). The power save function is performed by setting this pin Low; the functional blocks except OSC are in the power save mode. —17— CXA1744AR ...
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... A 13 (0.22) 12 0.127 – 0.02 + 0.08 + 0.2 1.5 – 0.1 0.1 ± 0.1 0° to 10° NOTE: “ ” Dimensions do not include mold protrusion. DETAIL A PACKAGE STRUCTURE PACKAGE MATERIAL LQFP-48P-L01 LEAD TREATMENT QFP048-P-0707 LEAD MATERIAL PACKAGE WEIGHT —18— CXA1744AR + 0.05 0.1 EPOXY / PHENOL RESIN SOLDER/PALLADIUM PLATING 42/COPPER ALLOY 0.2g ...