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CXA3235/3236N
Band Tuner with On-chip availability this product, please contact sales office.
Description CXA3235/3236N monolithic tuner which integrates local oscillator mixer circuits band, local oscillator mixer circuits band, amplifier tuning onto single chip, enabling further miniaturization tuner. this supports format. Features noise figure power consumption typ.) On-chip tuning (I2C format) Selection frequency steps 31.25 kHz, 62.5 On-chip 4-output band switch Applications tuners tuners CATV tuners Structure Bipolar silicon monolithic SSOP (Plastic)
Absolute Maximum Ratings Supply voltage VCC1,VCC2 -0.3 +5.5 VCC3 -0.3 +10.0 Storage temperature Tstg +150 Allowable power dissipation
(when mounted substrate)
Operating Conditions Supply voltage VCC1, VCC2 VCC3 Operating temperature Topr
4.75 5.30 4.75 9.45
Note) Electrostatic discharge strength weak, care should taken handling this
Sony reserves right change products specifications without prior notice. This information does convey license implication otherwise under patents other right. Application circuits shown, any, typical examples illustrating operation devices. Sony cannot assume responsibility problems arising these circuits.
E97943A81-TE
CXA3235/3236N
Block Diagram Configuration
ADSW
VCC3
Divider 14/15bit Band Driver Phase Detector Charge Pump LOCK Receiver Shift Register Divider 1/512,640,1024 REFOSC
LOCK
Prescaler
VCC1
V.REG
Bias
VCC2
MIXout1
Buffer UOSCB2 UOSCE2 UOSCE1 UOSCB1
MIXout2 GND1 Buffer
VHFin
Buffer UHFin1 UHFin2
VOSC2
VOSC1
CXA3235/3236N
Description Symbol
100k
Equivalent circuit
VCC2
voltage
Description
Clock input.
100k
VCC2
Data I/O.
150k
VCC2
ADSW
Address selection. This controls bits (when open) address byte. 1.25
VCC3
VCC3
Output TRAP. Power supply output band. Power supply band. Power supply output band. corresponding selected band goes High. Analog circuit power supply.
VCC1
MIXout1
Mixer outputs. MIXout2
GND1
Analog circuit GND.
CXA3235/3236N
Symbol
Equivalent circuit
voltage
Description
VCC2
120k
used selecting frequency step mode. five modes (when open) selected applying input voltage. (VHF) (UHF) (VHF) (UHF) (VHF) (UHF) (VHF) (UHF) (VHF) (UHF) (VHF) (UHF) (VHF) (UHF) (VHF) (UHF) (VHF) (UHF) input. input format unbalanced input.
VHFin
UHFin1
UHFin2
inputs. input method selected from balanced input unbalanced input.
VCC1
VOSC1
External resonance circuit connection oscillator.
VOSC2
UOSCB1
VCC1
UOSCE1
External resonance circuit connection oscillator.
UOSCE2
UOSCB2
CXA3235/3236N
Symbol VCC2 GND2
Equivalent circuit
VCC1
voltage Description circuit power supply. circuit GND.
IFOUT
output.
VCC2
LOCK
(Lock) (UNLock)
LOCK detection. High when locked, when unlocked.
VCC2
transistor connection varicap diode drive.
Charge pump output. Connect loop filter.
REFOSC
Crystal connection reference oscillator.
VCC3
Power supply external supply.
CXA3235/3236N
Electrical Characteristics Circuit Current Item Circuit current Symbol AICCV AICCU Circuit current DICC
Electrical Characteristics Measurement Circuit. (VCC=5 Ta=25 Measurement conditions VCC1 current, Band switch output open during operation VCC1 current, Band switch output open during operation VCC2 current Min. Typ. Max. Unit
OSC/MIX/IF Amplifier Block Item Symbol Conversion gain Noise figure cross modulation
Maximum output power
Pomax fsw1 fsw2 fsw3 fsw4
Switch drift
Supply voltage drift fst1 fst2 fst3 fst4
Measurement conditions operation operation operation operation operation operation operation operation operation MHz, operation MHz, operation MHz, operation MHz, load saturation output operation fOSC from after switch operation fOSC from after switch operation fOSC from after switch operation fOSC from after switch operation fOSC when changes operation fOSC when changes operation fOSC when changes operation fOSC when changes
Min.
Typ.
Max. 12.5 13.5
Unit
±300 ±400 ±400 ±500 ±150 ±250 ±200 ±250
CXA3235/3236N
Measured value untuned inputs. Noise figure direct-reading value meter DSB. Desired signal (fD) input level dBm. Undesired signal (fUD) kHz, MHz. measurement value undesired signal level, measured with spectrum analyzer S/I=46 Value when operating. Block Item Symbol SDA, level input voltage level input voltage level input current level input current output voltage LSDA Clock input hysteresis CIHYS Clock rate CIRATE (charge pump) Output current ICPO1 Output current ICPO2 LeakCP1 Leak current LeakCP2 Leak current REFOSC Oscillator FXTOSC frequency range CXTOSC Input capacitance VXTOSC Drive level BVL, BVH, (Band IBS1 Output current VSAT1 Saturation voltage LeakBS1 Leak current (Band Output current Saturation voltage Leak current timing clock frequency Start waiting time Start hold time hold time High hold time Start setup time Data hold time Data setup time Rise time Fall time Start setup time Measurement conditions Min. Sink current 0.25 Typ. Max. -0.1 0.65 ±300 Unit
Byte4/Bit6 Byte4/Bit6 Byte4/Bit6 Byte4/Bit6
±140
±200
17.5 When When Sink current When
20.5
mVp-p
IBS2 When VSAT2 When Sink current LeakBS2 When fSCL tWSTA tHSTA tLOW tHIGH tSSTA tHDAT tSDAT tSSTO 1300 1300 1300
0.03
Timing Chart Page Timing Chart Page Timing Chart Page Timing Chart Page Timing Chart Page Timing Chart Page Timing Chart Page Timing Chart Page Timing Chart Page Timing Chart Page
CXA3235/3236N
Electrical Characteristics Measurement Circuit
+30V
8200p 1.2k 0.047µ 2SC2785 3.3µ LOCK 1T363 1T362 0.5p 0.5p 5.5t
2.5t
0.5p
1T363
150p
1T363
XTAL 4MHz 100p
UOSCB2
UOSCE1
VOSC2
GND2
LOCK
VCC3
REFOSC
UOSCE2
UOSCB1
IFOUT
VCC2
CXA3235/3236N
out1
out2
UHFin1
4.5t ADSW 4.5t
UHFin2
VCC1
GND1
3.3µ
VOSC1
CXA3235/3236N
Description Functions CXA3235/3236N terrestrial wave broadcast tuner which converts frequencies order tune detect only desired reception frequency VHF, CATV band signals. addition mixer, local oscillator amplifier circuits required frequency conversion this also integrates circuit local oscillator frequency control onto single chip. functions various circuits described below. Mixer circuit This circuit outputs frequency difference between signal input VHFIN UHFIN local oscillation signal. Local oscillator circuit formed externally connecting resonance circuit composed varicap diode inductance. amplifier circuit This circuit amplifies mixer output, consists amplifier stage impedance output stage. circuit This circuit fixes local oscillator frequency desired frequency. consists prescaler, main divider, reference divider, phase comparator, charge pump reference oscillator. control format supports format. following five modes selected according combination frequency division values main reference dividers.
Mode
Main divider
Reference divider 1024 fixed fixed fixed fixed 512/1024 switching
CXA3235/3236N
Description Analog Block Operation (See Electrical Characteristics Measurement Circuit.) oscillator circuit This circuit differential amplifier type oscillator circuit. output input. Oscillation performed connecting resonance circuit including varicap coupled capacitance, inputting with feedback capacitance, applying positive feedback. amplifier between Pins extremely high gain. Therefore, care should taken avoid creating parasitic capacitance, resistance other feedback loops this produce abnormal oscillation. mixer circuit mixer circuit employs double balance mixer with little local oscillation signal leakage. input format base input type, with grounded signal input signal inserted from oscillator, converted frequency output from Pins Pins open collectors, power must supplied externally. electric potential Pins this time must more. oscillator circuit This oscillator circuit designed that collector ground type Colpitts oscillators perform differential oscillation operation resonance circuit including varicap. Connect resonator capacitance composing colpitts oscillators between Pins Pins Pins Then, resonance circuit comprising varicap diode connected across Pins mixer circuit This circuit employs double balance mixer like mixer circuit. input format base input type, with Pins input pins. input method selected from balanced input consisting differential input Pins unbalanced input consisting grounding capacitor input Pins mixer outputs. Pins open collectors, power must supplied externally. electric potential Pins this time must more. amplifier circuit signals frequency converted mixer output from Pins same time coupled inside input amplifier. Single-tuned filters connected Pins order improve interference characteristics amplifier. signal amplified amplifier output from output impedance approximately
-10-
CXA3235/3236N
Description Block this supports control format. control pins shown table below. Symbol ADSW Description Address selection input
Mode Setting Method modes each frequency step according voltage. Mode voltage 0.15 OPEN 0.45 0.55 0.65 0.75 0.85 Main divider Reference divider 1024 512/ 640/ 1024 Reference frequency 3.90625 7.8125 6.25 7.8125 7.8125 kHz/ 6.25 kHz/ 3.90625 Frequency step 31.25 62.5 62.5 62.5 kHz/ kHz/ 31.25
Frequency step when X'tal MHz. Address Setting responding address changed according ADSW voltage, that multiple exist within system. Address ADSW voltage OPEN
-11-
CXA3235/3236N
Programming lock frequency obtained according following formula. fosc fref fosc local oscillator frequency fref reference frequency prescaler fixed frequency division ratio main divider frequency division ratio swallow counter frequency division ratio variable frequency division ranges follows, binary. 1023 mode)
3-1) CXA3235N control format follows. 3-1-1 B-0/B-1/B-2/B-3 Modes Slave Receiver bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0
Write-mode
MODE Address byte Divider byte Divider byte Control byte Band byte Don't care mode.
3-1-2
Mode Slave Receiver bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0
Write-mode
MODE Address byte Divider byte Divider byte Control byte Band byte Don't care
-12-
CXA3235/3236N
3-2) CXA3236N control format follows. data order switched CXA3235N. 3-2-1 B-0/B-1/B-2/B-3 Modes Slave Receiver MODE bit7 Address byte Divider byte Divider byte Control byte Band byte
Write-mode
bit6
bit5
bit4
bit3
bit2
bit1
bit0
Don't care mode.
3-2-2
Mode Slave Receiver bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0
Write-mode
MODE Address byte Divider byte Divider byte Control byte Band byte Don't care MA0,
Acknowledge address setting main divider frequency division ratio setting swallow counter frequency division ratio setting test mode selection (when "1") charge pump (when "1") varicap output (when "1") charge pump current switching (200 when "1", when "0") band switch control (output when "1") band switch control (output when "1") trap switch control (output when "1") band switch control (output when "1") Reference divider frequency division ratio setting
-13-
CXA3235/3236N
Reference Divider Frequency Division Ratio Table Don't care 3-3) read data format shown below. Read-mode Slave Transmitter bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0 Reference divider 1024
MODE Address byte Status byte
MA0,
acknowledge power-on reset lock detection signal address setting
-14-
CXA3235/3236N
Timing Chart
tWSTA
tSSTA tSSTO
tHSTA START
tLOW
tHIGH CLOCK
tSDAT
tHDAT STOP
DATACHANGE
tSSTA =Start setup time tWSTA =Start waiting time tHSTA =Start hold time tLOW =LOW clock pulse width tHIGH =HIGH clock pulse width
tSDAT tHDAT tSSTO
=Data setup time =Data hold time =Stop setup time =Rise time =Fall time
-15-
CXA3235/3236N
Circuit current Supply voltage
Circuit current Supply voltage
AICC Circuit current [mA]
DICC Circuit current [mA]
VCC1 Supply voltage Band output voltage Output current (BU, BVH, BVL)
VCC2 Supply voltage Band output voltage Output current (FMT)
VCC3=9V
VCC3=9V
Output voltage
Output voltage
VCC3=5V
VCC3=5V
Output current [mA] characteristics (Untuned input)
Output current [mA]
output level [dBm]
fRF=100MHz (VHF) fRF=450MHz (UHF) both f=45MHz
input level [dBm]
-16-
CXA3235/3236N
Conversion gain [dB]
Conversion gain Reception frequency (Untuned input) fIF=45MHz Reception frequency [MHz] Next adjacent cross modulation Reception frequency (Untuned input)
(Low) (High)
Noise figure Reception frequency (Untuned input, DSB) fIF=45MHz
Noise figure [dB]
(Low) (High)
Reception frequency [MHz]
Oscillation frequency power supply fluctuation (PLL off)
(High) (Low) VCC+5% VCC-5% (VCC=5V)
Cross modulation [dBµ]
drift [kHz]
fIF=45MHz fUD=fD+12MHz fUD=fD-12MHz (100kHz,
-100 -200 -300
Reception frequency [MHz]
-400
Oscillation frequency [MHz]
beat characteristics
output level [dBm]
fBeat fLocal=129MHz fP=83.25MHz fC=86.83MHz, (fP-12dB) fS=87.75MHz, (fP-1.7dB) fIF=45.75MHz fBeat=fIF±920kHz
output level [dBm] level)
-17-
CXA3235/3236N
Tuning Response Time
(Low) 95MHz (High) 395MHz T=70ms
5.0V/div offset 10.0V -90,0000ms 10,0000ms 20.0ms/div 110,000ms
413MHz 847MHz T=70ms
5.0V/div offset 10.0V -90,0000ms 10,0000ms 20.0ms/div 110,000ms
-18-
CXA3235/3236N
output spectrum
RL=0dBm 10dB/div
(Low) fRF=55MHz fLO=100MHz input level -40dBm
CENTER 45.0MHz 1.0kHz
10Hz
SPAN 100.0kHz 30.0s
output spectrum
RL=0dBm 10dB/div
(High) fRF=350MHz fLO=395MHz input level -40dBm
CENTER 45.0MHz 1.0kHz
10Hz
SPAN 100.0kHz 30.0s
-19-
CXA3235/3236N
output spectrum
RL=0dBm 10dB/div
(Low) fRF=800MHz fLO=845MHz input level -40dBm
CENTER 45.0MHz 1.0kHz
10Hz
SPAN 100.0kHz 30.0s
-20-
CXA3235/3236N
Input Impedance
j100
50MHz 1000p
VHFin
350MHz
-j25
-j100
-j50
Input Impedance
j100
UHFin1
1000p
UHFin2
350MHz
-j25
800MHz
-j100
-j50
-21-
CXA3235/3236N
output Impedance
j100
45MHz
-j25
-j100
-j50
-22-
CXA3235/3236N
Package Outline
Unit
30PIN SSOP (PLASTIC)
1.25
0.10
0.22 0.05 0.13
0.65 0.05 0.15 0.02
NOTE: Dimension does include mold protrusion. DETAIL
PACKAGE STRUCTURE
PACKAGE MATERIAL SONY CODE EIAJ CODE JEDEC CODE SSOP-30P-L01 SSOP030-P-0056 LEAD TREATMENT LEAD MATERIAL PACKAGE MASS EPOXY RESIN SOLDER/PALLADIUM PLATING 42/COPPER ALLOY 0.1g
NOTE PALLADIUM PLATING This product uses S-PdPPF (Sony Spec.-Palladium Pre-Plated Lead Frame).
-23-
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