CXA3095N All Band TV Tuner IC (VHF-CATV-UHF) 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. 24 pin SSOP (Plastic) 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 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 Structure Bipolar silicon monolithic IC 9.0 ± 0.9 –20 to +75 V °C Applications • TV tuner • CATV tuner • VCR tuner IFIN1 IFIN2 VCC MIXOUT1 MIXOUT2 GND GND VHFIN1 VHFIN2 NC UHFIN1 UHFIN2 Block Diagram and Pin Configuration (Top View) 24 23 22 21 20 19 18 17 16 15 14 13 IF AMP VHF MIX REG UHF MIX BAND SW UHF OSC UOSCB2 UOSCE2 8 9 10 11 12 VOSCB PLLOUT 7 NC BANDSW 6 VOSCC 5 UOSCB1 4 UOSCE1 3 GND 2 VHF OSC GND 1 IFOUT OSC BUFF 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– E95Y07-ST CXA3095N Pin Description and Equivalent Circuit Pin NO. Symbol Pin voltage typ (V) Under VHF operation: 4.5 1 Equivalent circuit Description VCC 22 47 IFOUT IF output. 1 Under UHF operation: 4.5 22 VCC 0 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. 900 2 BANDSW 1.6k 2 3 20k 22 VCC 5.8 3 PLLOUT PLL oscillator signal output. 30 3 5.7 4 5 3.5 UOSCB2 3.3 4 5 8 9 3.0 UOSCE2 8 UOSCE1 9 UOSCB1 2.5 3k 3k 3.0 UHF oscillator. 2.5 3.5 3.3 6.3 10 3.2k 10 22 VCC VOSCC 1k 9.0 12 3k 3k VHF oscillator. 3.3 12 VOSCB 3.5 11 No connected. NC –2– CXA3095N Pin NO. Symbol Pin voltage typ (V) Equivalent circuit Description 3.4 13 UHFIN2 3.2 13 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. 14 6k 6k 3.4 14 UHFIN1 3.2 15 NC No connected. 3.2 16 VHFIN2 3.4 16 17 6k VHF input. Normally a capacitor is connected at Pin 17 to GND and Pin 16 is used for input. 6k 3.2 17 VHFIN1 3.4 6, 7 GND 18, 19 GND. 0 7.4 20 VCC 22 MIXOUT2 7.2 450 450 20 21 Mixer output. 7.4 21 MIXOUT1 7.2 22 VCC Power supply. 9.0 — 23 IFIN2 15p — 15p 23 24 8k 8k — 24 IFIN1 — –3– IF amplifier input. CXA3095N Electrical Characteristics Item Circuit current Conversion gain∗1 Noise figure∗1 ∗2 1% cross modulation∗1 ∗3 Max. output power Switch ON drift∗4 +B supply voltage drift∗5 See Electrical Characteristics Measurement Circuit (Ta = 25°C, VCC = 9V) Symbol Conditions Min. Typ. Max. Unit IccV VHF operation; no signal 38 53 63 mA IccU UHF operation; no signal 37 51 62 mA CG1 VHF operation; fRF = 55MHz; Input level –40dBm 17 20 23 dB CG2 VHF operation; fRF = 360MHz; Input level –40dBm 18 21 24 dB CG3 UHF operation; fRF = 360MHz; Input level –40dBm 23 26 29 dB CG4 UHF operation; fRF = 800MHz; Input level –40dBm 23 26 29 dB NF1 VHF operation; fRF = 55MHz 13 16 dB NF2 VHF operation; fRF = 360MHz 12 15 dB NF3 UHF operation; fRF = 360MHz 9 13 dB NF4 UHF operation; fRF = 800MHz 9 13 dB CM1 VHF operation; fD = 55MHz, fUD = ±12MHz 99 102 dBµ CM2 VHF operation; fD = 360MHz, fUD = ±12MHz 97 100 dBµ CM3 UHF operation; fD = 360MHz, fUD = ±12MHz 91 94 dBµ CM4 UHF operation; fD = 800MHz, fUD = ±12MHz 89 92 dBµ +8 +10 dBm Pomax 50Ω load (sat) ∆fsw1 VHF operation; fosc = 100MHz ±200 kHz ∆fsw2 VHF operation; fosc = 405MHz ±300 kHz ∆fsw3 UHF operation; fosc = 405MHz ±300 kHz ∆fsw4 UHF operation; fosc = 845MHz ±300 kHz ∆fst1 VHF operation; fosc = 100MHz ±100 kHz ∆fst2 VHF operation; fosc = 405MHz ±200 kHz ∆fst3 UHF operation; fosc = 405MHz ±150 kHz ∆fst4 UHF operation; fosc = 845MHz ±150 kHz PLL OUT output power PoscV VHF operation; 50Ω load –20 –10 dBm PoscU UHF operation; 50Ω load –20 –10 dBm Band switch voltage VswV VHF operation 0 0.5 V VswU UHF operation 3 10.5 V ∗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 1n VHF IN UHF IN 1n 1n 51p IFIN2 VCC MIXOUT1 MIXOUT2 19 18 17 16 15 1n 14 13 UHFIN2 20 VHFIN2 21 VHFIN1 22 GND 23 GND 24 IFIN1 1n UHFIN1 51p NC 4.7µ IFOUT BANDSW PLLOUT UOSCB2 UOSCE2 GND GND UOSCE1 UOSCB1 VOSCC NC VOSCB CXA3095N 1 2 3 4 5 6 7 8 9 10 11 12 1n 1p (UK) 4p 3.3k 2p 22 1T362 16p 4p 47k 1n 1n 56p 1T363 56p 14p 0.5φ 3.2φ 2.5t 0.5p (UK) 0.5p (UK) 47k 47k 10k IF OUT 1T363 47k 0.5φ 2.6φ 1.5t 68p (RH) 1n 1n 47k BAND SW OFF: VHF ON: UHF 51 VH 47k 0.5φ 3.2φ 5.5t 51 3.3k VH/VL SW VL +9V 100 +9V PLL OUT VC 15µ 1n 1n –5– 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 75Ω. 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) Next adjacent cross modulation vs. Reception frequency (Untuned input) 120 40 VHF (Low) VHF (High) 100 CM – Cross modulation [dBµ] UHF 30 CG – Conversion gain [dB] UHF VHF (Low) 20 VHF (High) fIF = 45MHz, 100kHz 30%AM 80 fUD = fD + 12MHz fUD = fD – 12MHz 60 40 20 0 10 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] Noise figure vs. Reception frequency (Untuned input, in DSB) I/O characteristics (Untuned input) 20 20 fIF = 45MHz 15 NF – Noise figure [dB] IF output level [dBm] 0 fRF = 100MHz (VHF) fRF = 450MHz (UHF) fIF is the both 45MHz –20 VHF (Low) UHF 10 5 –40 –60 –60 VHF (High) 0 –50 –40 –30 –20 –10 0 0 10 100 200 300 400 500 600 700 800 900 Receiving frequency [MHz] RF input level [dBm] –7– CXA3095N Circuit current vs. Supply voltage 60 VHF Circuit current [mA] UHF 50 40 8 9 10 Supply voltage [V] +B drift vs. Oscillation frequency 300 VCC + 5% VCC – 5% (VCC = 9V) 200 Drift [kHz] 100 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 PLLOUT level [dBm] –10 –20 –30 –40 –50 Fundamental harmonic output level Secondary higher harmonic output level –60 0 100 200 300 400 500 600 Oscillation frequency [MHz] –8– 700 800 900 CXA3095N VHF Input Impedance j50 j100 j25 13 14 15 16 17 1000pF 300MHz 400MHz –j25 VHFIN1 VHFIN2 50MHz 100MHz 200MHz NC 50 UHFIN1 0 UHFIN2 IC S11 –j100 –j50 UHF Input Impedance j50 j100 j25 200MHz NC 50 UHFIN1 0 UHFIN2 IC 13 14 15 1000pF S11 400MHz 600MHz 800MHz –j25 –j50 –9– –j100 CXA3095N IF Output Impedance j50 j100 j25 0 50 60MHz 45MHz 30MHz –j25 –j100 –j50 PLL Output Impedance j50 j100 j25 0 135MHz 50 850MHz 470MHz –j25 –j100 –j50 – 10 – CXA3095N Package Outline Unit : mm 24PIN SSOP (PLASTIC) + 0.2 1.25 – 0.1 ∗9.7 ± 0.1 24 0.1 1 0.13 M 7.6 ± 0.2 ∗5.6 ± 0.1 13 A 12 + 0.08 0.32 – 0.07 0.8 + 0.05 0.32 – 0.04 0.25 0.1 ± 0.1 (0.3) (0.15) + 0.02 0.17 – 0.01 0° to 10° 0.6 ± 0.15 (0.5) B DETAIL B DETAIL A NOTE: Dimension “∗” does not include mold protrusion. PACKAGE STRUCTURE PACKAGE MATERIAL EPOXY RESIN SONY CODE SSOP-24P-L03 LEAD TREATMENT PALLADIUM PLATING EIAJ CODE SSOP024-P-0056 LEAD MATERIAL COPPER ALLOY PACKAGE MASS 0.1g JEDEC CODE – 11 –