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| CXA3095N All Band TV Tuner IC (VHF-CATV-UHF) For the availability of this product, please contact the sales office. Description The CXA3095N is a single chip TV tuner IC which performs as an oscillator, mixer for VHF-CATV and UHF bands. An IF amplifier is also provided. This IC adopts a 24-pin SSOP package (0.8mm pitch) in response to the trend toward miniaturizing the tuner and automatic IC mounting. This IC is the inverted product of the CXA3025N pin assignment. Features * Low noise figure * Superior cross modulation * Low spurious * Stable oscillating characteristics * Local oscillator output for PLL * Double tune filter connectable to MIX output * Low thermal resistance package Structure Bipolar silicon monolithic IC Applications * TV tuner * CATV tuner * VCR tuner Block Diagram and Pin Configuration (Top View) MIXOUT1 MIXOUT2 UHFIN1 VHFIN2 IFIN1 UHFIN2 VHFIN1 IFIN2 GND 24 pin SSOP (Plastic) Absolute Maximum Ratings * Supply voltage VCC 10.5 V * Storage temperature Tstg -65 to +150 C * Allowable power dissipation PD 1200 mW (when mounted on a board) Operating Conditions * Supply voltage VCC * Operating temperature Topr 9.0 0.9 -20 to +75 V C GND VCC NC 24 23 22 21 20 19 18 17 16 15 14 13 IF AMP REG VHF MIX UHF MIX BAND SW OSC BUFF UHF OSC VHF OSC 1 2 3 4 5 6 7 8 9 10 11 12 UOSCE2 GND UOSCB2 BANDSW UOSCE1 PLLOUT VOSCC UOSCB1 Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits. -1- VOSCB GND IFOUT NC E95Y07-ST CXA3095N Pin Description and Equivalent Circuit Pin NO. Symbol Pin voltage typ (V) Under VHF operation: 4.5 1 IFOUT Under UHF operation: 4.5 Equivalent circuit VCC Description 22 47 1 IF output. 22 VCC 0 900 2 BANDSW 2 1.6k 3 Band switching. UHF operation when 3V or more voltage is applied externally, and VHF operation when OPEN or 0.5V or less voltage is applied. 20k 22 VCC 5.8 3 PLLOUT 5.7 PLL oscillator signal output. 3 3.2k 30 4 3.5 UOSCB2 3.3 3.0 UOSCE2 2.5 3.0 2.5 3.5 UOSCB1 3.3 6.3 10 22 VCC 1k 3k 3k 4 5 8 9 5 UHF oscillator. 8 UOSCE1 9 10 VOSCC 9.0 3k 12 3k VHF oscillator. 3.3 12 VOSCB 3.5 11 NC -2- No connected. CXA3095N Pin NO. Symbol Pin voltage typ (V) 3.4 Equivalent circuit Description 13 UHFIN2 3.2 3.4 13 6k 6k 14 14 UHFIN1 3.2 UHF input. The balanced input to Pins 13 and 14, or a capacitor is connected at Pin 13 to GND and Pin 14 is used for input. 15 NC 3.2 No connected. 16 VHFIN2 3.4 3.2 16 6k 6k 17 VHF input. Normally a capacitor is connected at Pin 17 to GND and Pin 16 is used for input. 17 VHFIN1 3.4 6, 7 GND 18, 19 0 7.4 GND. VCC 22 450 20 450 21 20 MIXOUT2 7.2 7.4 Mixer output. 21 MIXOUT1 7.2 22 VCC 9.0 -- 23 IFIN2 -- -- 24 IFIN1 -- 23 8k 8k 15p 15p 24 Power supply. IF amplifier input. -3- CXA3095N Electrical Characteristics Item Circuit current Symbol IccV IccU CG1 Conversion gain1 CG2 CG3 CG4 NF1 Noise figure1 2 NF2 NF3 NF4 CM1 1% cross modulation1 3 CM2 CM3 CM4 Max. output power See Electrical Characteristics Measurement Circuit (Ta = 25C, VCC = 9V) Conditions VHF operation; no signal UHF operation; no signal VHF operation; fRF = 55MHz; Input level -40dBm VHF operation; fRF = 360MHz; Input level -40dBm UHF operation; fRF = 360MHz; Input level -40dBm UHF operation; fRF = 800MHz; Input level -40dBm VHF operation; fRF = 55MHz VHF operation; fRF = 360MHz UHF operation; fRF = 360MHz UHF operation; fRF = 800MHz VHF operation; fD = 55MHz, fUD = 12MHz VHF operation; fD = 360MHz, fUD = 12MHz UHF operation; fD = 360MHz, fUD = 12MHz UHF operation; fD = 800MHz, fUD = 12MHz 99 97 91 89 +8 Min. 38 37 17 18 23 23 Typ. 53 51 20 21 26 26 13 12 9 9 102 100 94 92 +10 200 300 300 300 100 200 150 150 -20 -20 0 3 -10 -10 0.5 10.5 Max. 63 62 23 24 29 29 16 15 13 13 Unit mA mA dB dB dB dB dB dB dB dB dB dB dB dB dBm kHz kHz kHz kHz kHz kHz kHz kHz dBm dBm V V Pomax 50 load (sat) fsw1 VHF operation; fosc = 100MHz VHF operation; fosc = 405MHz UHF operation; fosc = 405MHz UHF operation; fosc = 845MHz VHF operation; fosc = 100MHz VHF operation; fosc = 405MHz UHF operation; fosc = 405MHz UHF operation; fosc = 845MHz fsw2 fsw3 fsw4 fst1 fst2 fst3 fst4 Switch ON drift4 +B supply voltage drift5 PLL OUT output power Band switch voltage PoscV VHF operation; 50 load PoscU UHF operation; 50 load VswV VswU VHF operation UHF operation 1 Measured value for untuned inputs. 2 Noise figure is the direct-reading value of NF meter in DSB. 3 Desired signal (fD) input level is -33dBm. Undesired signal (fUD) is 100kHz, 30%AM at 12MHz. The measurement value is undesired signal level, it measured with a spectrum analyzer at S/I = 46dB. 4 Frequency variation form 3 seconds to 3 minutes after switch ON. 5 Frequency variation when Vcc = 9V 5% variation. -4- CXA3095N Electrical Characteristics Measurement Circuit +9V 4.7 1n VHF IN UHF IN 51p 51p 1n 1n 1n 1n 24 23 22 21 20 19 18 17 16 15 14 13 MIXOUT2 MIXOUT1 UHFIN1 VHFIN1 IFIN2 IFIN1 GND NC CXA3095N BANDSW UOSCB2 UOSCE2 UOSCE1 PLLOUT UOSCB1 IFOUT GND VOSCC GND 1 1n 2 3 4 5 6 7 8 9 NC 10 11 1p (UK) 12 22 47k 68p (RH) 3.3k 1n 1n 4p 2p 4p 1T362 16p 1T363 0.5 3.2 2.5t 47k 1n 56p 0.5p (UK) 14p 56p 10k IF OUT 1T363 BAND SW OFF: VHF ON: UHF 47k 47k 0.5 2.6 1.5t 0.5p (UK) 47k 47k 1n 51 VH 0.5 3.2 5.5t 51 3.3k VL +9V VH/VL SW 100 +9V PLL OUT VC 15 1n 1n -5- VOSCB UHFIN2 VHFIN2 GND VCC CXA3095N Description of Operation (See Electrical Characteristics Measurement Circuit.) VHF oscillator circuit The differential oscillator circuit with an output at Pin 10 and an input at Pin 12. Connect an LC resonance circuit comprising a varicap diode to Pin 10 through a coupling capacitor. The positive feedback from the resonance circuit is applied to Pin 12 through a feedback capacitor to execute oscillation. Note that if a parasitic capacitance across Pins 10 and 12 is too large, it may cause undesired stray oscillation. VHF mixer circuit This is a common emitter type double-balanced mixer having small leakage of local oscillation signal. The RF signal is input to Pins 16 and 17. In normal use, the signal is input to one pin while the other pin is connected to GND by decoupling capacitor. The RF signal is converted to IF frequency with the signal supplied from oscillator. The converted RF is sent to the IF frequency and output to Pins 20 and 21. UHF oscillator circuit UHF oscillator is formed from two collector-grounded Colpitts oscillators, and oscillation is provided at the differential input through an LC resonator circuit comprising a varicap diode. LC resonator comprising a varicap diode is connected across Pins 4, 5, 8, and 9. UHF mixer circuit The double-balanced mixer like the VHF mixer is adopted. The RF signal is input to Pins 13 and 14. There is a balanced differential input from pre-stage double tune circuit, or an unbalanced input to Pin 14 with the capacitor connected at Pin 13 to GND. Otherwise, the conditions and usage are the same as those for the VHF mixer circuit. IF amplifier circuit The frequency converted signal at mixer is output from Pins 20 and 21, and input to IF input pins 23 and 24 through the external IF tune circuit. As an IF tune circuit, single tune circuit like the electrical characteristics measurement circuit or double tune circuit can be connected. The amplified signal at IF amplifier is output to Pin 1. The output impedance is approximately 75. Also, input block of the IF amplifier has a built-in coupling capacitor, and direct connection with the mixer output is possible. UHF/VHF switch circuit UHF operation is chosen by applying 3V or more voltage to Pin 2; VHF operation for 0V or OPEN. PLL oscillator signal output circuit Oscillation signal is output to PLLOUT through buffer amplifier. The resistance connected to the output pin is for current adjustment flowing to buffer amplifier. The resistance value is adjusted depending on the connected load, and output distortion can be minimized. Notes on Usage Care should be taken such as grounding in placing external parts because high frequencies are present. GND (Pins 6, 7, 18, and 19) are served both as heat dissipation pins, and adjust accordingly to prevent heat problems. Please concern for damage by static electricity for high frequency input/output pins. -6- CXA3095N Example of Representative Characteristics Conversion gain vs. Reception frequency (Untuned input) 40 120 Next adjacent cross modulation vs. Reception frequency (Untuned input) VHF (Low) 100 VHF (High) UHF CM - Cross modulation [dB] fIF = 45MHz, 100kHz 30%AM 80 fUD = fD + 12MHz fUD = fD - 12MHz 30 UHF CG - Conversion gain [dB] 60 20 VHF (Low) VHF (High) 40 20 10 0 0 100 200 300 400 500 600 700 800 900 Receiving frequency [MHz] 0 0 100 200 300 400 500 600 700 800 900 Receiving frequency [MHz] I/O characteristics (Untuned input) 20 20 Noise figure vs. Reception frequency (Untuned input, in DSB) fIF = 45MHz 0 15 NF - Noise figure [dB] IF output level [dBm] VHF (High) VHF (Low) 10 UHF -20 fRF = 100MHz (VHF) fRF = 450MHz (UHF) fIF is the both 45MHz -40 5 -60 -60 0 -50 -40 -30 -20 -10 0 10 0 100 200 300 400 500 600 700 800 900 Receiving frequency [MHz] RF input level [dBm] -7- CXA3095N Circuit current vs. Supply voltage 60 VHF UHF Circuit current [mA] 50 40 8 9 Supply voltage [V] 10 +B drift vs. Oscillation frequency 300 200 100 VCC + 5% VCC - 5% (VCC = 9V) Drift [kHz] 0 -100 -200 -300 0 100 200 300 400 500 600 700 800 900 Oscillation frequency [MHz] PLLOUT level (fundamental harmonic and secondary higher harmonic) vs. Oscillation frequency 0 -10 PLLOUT level [dBm] -20 -30 -40 -50 Fundamental harmonic output level Secondary higher harmonic output level 0 100 200 300 400 500 600 700 800 900 -60 Oscillation frequency [MHz] -8- CXA3095N VHF Input Impedance j50 j25 j100 IC UHFIN2 UHFIN1 50 50MHz 100MHz 200MHz 300MHz 400MHz 13 14 15 NC 0 16 17 1000pF S11 -j25 -j100 -j50 UHF Input Impedance j50 j25 j100 IC 50 13 200MHz 1000pF S11 400MHz 600MHz -j25 800MHz -j100 14 15 -j50 -9- NC 0 UHFIN2 UHFIN1 VHFIN2 VHFIN1 CXA3095N IF Output Impedance j50 j25 j100 0 50 60MHz 45MHz 30MHz -j25 -j100 -j50 PLL Output Impedance j50 j25 j100 0 50 135MHz 850MHz 470MHz -j25 -j100 -j50 - 10 - CXA3095N Package Outline Unit : mm 24PIN SSOP (PLASTIC) + 0.2 1.25 - 0.1 9.7 0.1 0.1 13 24 5.6 0.1 A 1 + 0.08 0.32 - 0.07 12 0.8 0.13 M 0.25 0.1 0.1 B (0.3) + 0.05 0.32 - 0.04 7.6 0.2 DETAIL B EPOXY RESIN PALLADIUM PLATING COPPER ALLOY 0.1g 0 to 10 DETAIL A NOTE: Dimension "" does not include mold protrusion. PACKAGE STRUCTURE PACKAGE MATERIAL SONY CODE EIAJ CODE JEDEC CODE SSOP-24P-L03 SSOP024-P-0056 LEAD TREATMENT LEAD MATERIAL PACKAGE MASS - 11 - 0.6 0.15 + 0.02 0.17 - 0.01 (0.5) (0.15) |
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