cxa3250an Sony Electronics, cxa3250an Datasheet

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... All Band TV Tuner IC with On-chip PLL For the availability of this product, please contact the sales office. Description The CXA3250AN is a monolithic TV tuner IC which integrates local oscillator and mixer circuits for VHF band, local oscillator and mixer circuits for UHF band amplifier and a tuning PLL onto a single chip, enabling further miniaturization of the tuner ...

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... VHFin 13 UHFin1 14 VHF UHF MIX MIX UHFin2 15 Shift Divider Register 1/64, 80, 128 Phase Detector Programable Divider 14/15bit Mode Select Bias Buffer Buffer Buffer —2— CXA3250AN REF 29 REFOSC OSC ADC CPO 28 Charge Pump VT 27 LOCK LOCK 26 /ADC Det 25 IFOUT 24 GND2 V ...

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... UHF oscillator (base pin) 2 PLL circuit PLL circuit GND IF output LOCK signal output/ADC input (I VC drive voltage output (open collector) Charge pump output (loop filter connection) Crystal connection 3 Band switch power supply CC —3— CXA3250AN Description 2 C bus bus) ...

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... CXA3250AN Description Clock input. Data input bus setting : Address selection. Bits 1 and 2 of the address byte are controlled. 3-wire bus setting : Enable input. Band switch outputs. The pin corresponding to the selected band goes High ...

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... CXA3250AN Description Mixer output. These pins output the signal with open collector, and they must be connected to the power supply via the load. Analog circuit GND. Pin 12 : VHF input grounding and control bus switching. Pin 13 : VHF input. ...

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... UHF oscillator — PLL circuit power supply. — PLL circuit GND output 3-wire bus setting : 250 26 5k 500k —6— CXA3250AN Description 2 C bus setting : 5-level A/D converter input. Lock detection. Low when locked, High when unlocked. ...

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... CXA3250AN Description Varicap drive voltage output. This pin outputs the signal with open collector, and this must be connected to the tuning power supply via the load. Charge pump output. Connects the loop filter. Crystal connection for reference oscillator ...

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... ON =405 MHz OSC f from min after switch ON =405 MHz OSC f from min after switch ON =845 MHz OSC f from min after switch ON —8— CXA3250AN ( Ta=25 °C) CC Min. Typ. Max. Unit ...

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... OSC f when changes ± =845 MHz OSC f when changes ± =95 MHz OSC =395 MHz =413 MHz OSC =847 MHz —9— CXA3250AN Min. Typ. Max. Unit ±200 kHz ±250 kHz ±150 kHz ±150 kHz 82 dBc/ ...

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... Byte4/bit6=1 When locked V –0.5 CC When unlocked Crystal source impedance When ON When ON Source current=20 mA When OFF 0 1300 600 1300 600 600 0 600 —10— CXA3250AN Typ. Max. Unit 1 –0.1 µA –0.3 –4 µ 1.5 V –100 –200 µA ...

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... Bus timing (3-wire bus) Data setup time t SD Data hold time t HD Enable waiting time t WE Enable setup time t SE Enable hold time t HE Measurement conditions Min. 600 300 600 300 300 600 —11— CXA3250AN Typ. Max. Unit 300 ns 300 ...

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... CXA3250AN 4.5t 4.5t 56p 56p BVH BU 1n 100 2.2 1n +5V —12— CXA3250AN 1.2k 51 BVL 3.2 1n 47k 5.5t 51 BVH 47k 3.2 1n 47k 2.5t 0.75p 150p 1T363 1T363 47k 1n 1T362 1p 20 16p 47k ...

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... CXA3250AN 4.5t 4.5t 56p 56p BVH BU 1n 100 2.2 1n +5V —13— CXA3250AN 1.2k 51 BVL 3.2 1n 47k 5.5t 51 BVH 47k 3.2 1n 47k 2.5t 0.75p 150p 1T363 1T363 47k 1n 1T362 1p 20 16p 47k ...

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... CXA3250AN 4.5t 4.5t 56p 56p BVH BU 1n 100 1n +5V —14— CXA3250AN 100 SWD 1.2k BVL 1n 47k 3.2 10k 5.5t SWD 1.2k 10k BVH 150p 1n 47k 10k 3.2 2.5t 0.5p 330p 1T363 10k 2p 1T362 20p ...

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... CXA3250AN 4.5t 4.5t 56p 56p BVH BU 1n 100 1n +5V —15— CXA3250AN 100 SWD 1.2k BVL 1n 47k 3.2 10k 5.5t SWD 1.2k 10k BVH 150p 1n 47k 10k 3.2 2.5t 0.5p 330p 1T363 10k 2p 1T362 20p ...

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... Description of Functions The CXA3250AN is a ground wave broadcast tuner IC which converts frequencies order to tune and detect only the desired reception frequency of VHF, CATV and UHF band signals. In addition to the mixer, local oscillation and IF amplifier circuits required for frequency conversion to IF, this IC also integrates a PLL circuit for local oscillation frequency control onto a single chip ...

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... AC coupled inside the IC and input to the IF amplifier. • Single-tuned filters are connected to Pins 9 and 10 in order to improve the interference characteristics of the IF amplifier. • The signal amplified by the IF amplifier is output from Pin 25. The output impedance is approximately 75 . (See the Electrical Characteristics Measurement Circuit.) —17— CXA3250AN ...

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... CLOCK input DATA input ENABLE input LOCK output bus Reference Phase comparison divider 64 128 Selectable from 64 128 80 80 —18— CXA3250AN Frequency frequency step 62.5 kHz 62.5 kHz 31.25 kHz 31.25 kHz 62.5 kHz/ 62.5 kHz/ 50.0 kHz/ 50.0 kHz/ 31.25 kHz 31.25 kHz 50.0 kHz 50.0 kHz 50.0 kHz 50.0 kHz ...

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... Write mode is set when the R/W bit is “0” and read mode is set when the R/W bit is “1” bus format, and bidirectional bus control is possible consisting of a —19— CXA3250AN ...

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... Further, even if the bus stop conditions are not met, data can be input by sending the start conditions and the new address MA1 MA0 R/W MA1 MA0 —20— CXA3250AN ...

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... X : Don’t care bit6 bit5 bit4 bit3 BS4 Reference divider 128 64 80 —21— CXA3250AN LSB bit2 bit1 bit0 MA1 MA0 BS3 BS2 BS1 A ...

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... bit6 bit5 bit4 bit3 —22— CXA3250AN bit2 bit1 bit0 MA1 MA0 ...

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... CLOCK ENABLE Time CC Frequency data Frequency data —23— CXA3250AN or to “1/64” when the BYP/MS pin is DC Invalid data Latch CC Invalid data Latch or to ...

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... R0 Reference divider frequency division ratio setting. Reference Divider Frequency Division Ratio Table Don’t care Frequency data Reference divider 128 64 80 —24— CXA3250AN Test data Invalid data Latch ...

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... LOW HIGH SDAT CLOCK DATACHANGE t =Data setup time SDAT t =Data hold time HDAT t =Stop setup time SSTO t =Rise time R t =Fall time 1. —25— CXA3250AN t SSTO t HDAT STOP t HE ...

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... RF level [dBm] 20 UHF VHF 15 10 5.2 5.3 5.4 4.6 Band SW output voltage vs. Output current 9.2 9.0 V 3=9V CC 8.8 8.6 5.0 V 3=5V CC 4.8 4.6 4 =145MHz (VHF) RF =495MHz (UHF both f=45MHz IF – —26— CXA3250AN Circuit current vs. Supply voltage 2 4.8 5 5.2 5.4 V 2-Supply voltage [ 3= 3= Output current [mA] ...

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... VHF (Low) VHF (High) 100 0 –100 =f +12MHz D =f –12MHz D –200 –300 –400 700 800 900 0 100 200 –12dB) P –1.7dB) P +20 —27— CXA3250AN f =45MHz IF UHF 300 400 500 600 700 800 900 Reception frequency [MHz] V – + =5V) CC UHF 300 400 ...

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... Tuning Response Time 1 VHF (Low) 95MHz –40,0000ms VHF (Low) 95MHz –130,000ms VHF (High) 395MHz (CP=1) T=27.2msec 10,0000ms 60,0000ms 10.0ms/div VHF (High) 395MHz (CP=0) T=75.6msec 20,0000ms 170,000ms 30.0ms/div —28— CXA3250AN 5.0V/div offset 10.0V real time 5.0V/div offset 10.0V real time ...

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... Tuning Response Time 2 UHF 413MHz –40,0000ms UHF 413MHz –70,0000ms UHF 847MHz (CP=1) T=34.2msec 10,0000ms 60,0000ms 10.0ms/div UHF 847MHz (CP=0) T=86.0msec 30,0000ms 130,000ms 20.0ms/div —29— CXA3250AN 5.0V/div offset 10.0V real time 5.0V/div offset 10.0V 10.0V real time ...

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... Tuning Response Time 3 VHF (High) 395MHz –40,0000ms VHF (High) 395MHz –100,000ms VHF (Low) 95MHz (CP=1) T=12.6msec 10,0000ms 10.0ms/div VHF (Low) 95MHz (CP=0) T=39.2msec 0,00000s 20.0ms/div —30— CXA3250AN 5.0V/div offset 10.0V 60,0000ms real time 5.0V/div offset 10.0V 100,000ms real time ...

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... Tuning Response Time 4 UHF 847MHz –40,0000ms UHF 847MHz –100,000ms UHF 413MHz (CP=1) T=15.0msec 10,0000ms 20.0ms/div UHF 413MHz (CP=0) T=50.0msec 0,00000s 20.0ms/div —31— CXA3250AN 5.0V/div offset 10.0V 600,000ms real time 5.0V/div offset 10.0V 100,000ms real time ...

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... CENTER 45.0MHz #RES BW 1.0kHz IF output spectrum VHF (Low) f =55MHz RF f =100MHz L.0 RF input level : –40dBm #VBW 10Hz IF output spectrum VHF (High) f =350MHz RF f =395MHz L.0 RF input level : –40dBm #VBW 10Hz —32— CXA3250AN 10dB/div SPAN 100.0kHz SWP 30.0 sec 10dB/div SPAN 100.0kHz SWP 30.0 sec ...

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... CENTER 45.0 270MHz #RES BW 1.0kHz IF output spectrum UHF f =800MHz RF f =845MHz L.0 RF input level : –40dBm #VBW 10Hz —33— CXA3250AN 10dB/div SPAN 100.0kHz SWP 30.0 sec ...

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... VHF Input Impedance j25 0 –j25 UHF Input Impedance j25 0 –j25 j50 j100 50 350MHz –j100 –j50 j50 j100 50 350MHz 800MHz –j100 –j50 —34— CXA3250AN 12 13 50MHz 1000p S11 14 15 1000p S11 ...

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... IF Output Impedance j25 45MHz 0 38MHz –j25 j50 j100 50 –j100 –j50 —35— CXA3250AN ...

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... This product uses S-PdPPF (Sony Spec.-Palladium Pre-Plated Lead Frame). 30PIN SSOP (PLASTIC) 9.7 ± 0 0.05 0.65 0.15 – 0.02 0.13 M 0° to 10° PACKAGE STRUCTURE PACKAGE MATERIAL LEAD TREATMENT SSOP-30P-L01 LEAD MATERIAL SSOP030-P-0056 PACKAGE MASS —36— CXA3250AN + 0.2 1.25 – 0.1 0.10 0.1 ± 0.1 DETAIL A EPOXY RESIN SOLDER/PALLADIUM PLATING 42/COPPER ALLOY 0.1g ...