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CXA3185/3186N
Band Tuner with On-chip availability this product, please contact sales office.
Description CXA3185/3186N monolithic tuner which integrates local oscillator mixer circuits band, local oscillator mixer circuits band, amplifier tuning onto single chip, enabling further miniaturization tuner. Features noise figure power consumption typ.) On-chip tuning (3-wire 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 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.
E97944-TE
CXA3185/3186N
Block Diagram Configuration
Divider 14/15bit Band Driver Phase Detector Charge Pump Input Buffer Shift Register Divider 1/512,640,1024
VCC3 REFOSC
LOCK
LOCK
Prescaler
VCC1
V.REG
Bias
VCC2
MIXout1
Buffer
UOSCB2 UOSCE2 UOSCE1 UOSCB1
MIXout2 GND1 VHFin Buffer
Buffer UHFin1 UHFin2
VOSC2 VOSC1
CXA3185/3186N
Description Symbol
100k
Equivalent circuit
VCC2
voltage
Description
Clock input.
100k
VCC2
Data input.
150k
VCC2
1.25 Enable pin. (when open)
VCC3
Vcc3
Output TRAP. Power supply output band. Power supply output band. Power supply output band. selected band goes High. Analog circuit power supply.
VCC1
MIXout1
Mixer outputs. MIXout2
GND1
Analog circuit GND.
CXA3185/3186N
Symbol
Equivalent circuit
VCC2
voltage
Description
120k
VHFin
UHFin1
UHFin2
VCC1
VOSC1
VOSC2
UOSCB1
VCC1
UOSCE1
UOSCE2
UOSCB2
Frequency step mode selection. Five modes (when open) selected according applied voltage. input. (VHF) input format unbalanced input. (UHF) (VHF) input. (UHF) input method selected from balanced input (VHF) unbalanced input. (UHF) (VHF) (UHF) External resonance circuit connection oscillator. (VHF) (UHF) (VHF) (UHF) (VHF) (UHF) External resonance circuit connection oscillator. (VHF) (UHF) (VHF) (UHF)
CXA3185/3186N
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.
CXA3185/3186N
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
CXA3185/3186N
Measured value untuned inputs. Noise figure direct-reading value meter DSB. Desired signal (fD) input level dBm. Undesired signal (fUD) kHz, measurement value undesired signal level, measured with spectrum analyzer S/I=46 dBm. Value when operating.
Block Item Symbol pins level input voltage level input voltage level input current level input current pins level input voltage VIHE level input voltage VILE level input current IIHE level input current IILE (charge pump) ICPO Output current LeakCP Leak current LOCK VLOCKH output voltage VLOCKL output voltage 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 Data setup time Data hold time Enable waiting time Enable setup time Enable hold time Measurement conditions Min. VIHE=VCC VILE=GND Typ. Max. -0.1 Unit
When locked When unlocked
VCC-0.5
17.5 When When Sink current When
20.5
mVp-p
IBS2 When VSAT2 When Sink current LeakBS2 When Timing Chart Page Timing Chart Page Timing Chart Page Timing Chart Page Timing Chart Page
0.03
CXA3185/3186N
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
CXA3185/3186N
out1
out2
UHFin1
4.5t CLOCK DATA ENABLE 4.5t
UHFin2
VCC1
GND1
3.3µ
VOSC1
CXA3185/3186N
Description Functions CXA3185/3186N 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 3-wire format. following four modes selected according combination frequency division values main reference dividers.
Mode A-3/4
Main divider
Reference divider 1024 fixed fixed fixed fixed
CXA3185/3186N
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 resonance capacitance which consists colpitts oscillator between Pins Pins Pins Then resonance circuit including varicap diode connected between 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-
CXA3185/3186N
Description Block this supports 3-wire control format. serial data input pins. data loaded shift register clock rise, latched enable fall. Symbol LOCK 3-wire control Enable input Clock input Data input Lock signal output
Mode Setting Method modes each frequency step according voltage. Mode voltage 0.15VCC OPEN 0.45VCC 0.55VCC 0.65VCC 0.75VCC 0.85VCC Main divider Reference divider 1024 Reference frequency 3.90625 7.8125 6.25 7.8125 7.8125 Frequency step 31.25 62.5 62.5 62.5 Control word length Total bits Total bits Total bits Total bits Total bits
Frequency step when X'tal MHz. 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) control data comprised above frequency data band switch control data.
-11-
CXA3185/3186N
2-1) CXA3185N control format follows. 2-1-1 A-0/A-2/A-3 Modes (19-bit data format) Front 2-1-2 Mode (18-bit data format) Front 2-1-3 Mode (27-bit data format) Front Don't care swallow counter frequency division ratio setting main divider frequency division ratio setting band switch control band switch control trap switch control band switch control charge pump current switching test mode selection charge pump reference divider frequency division ratio setting
(output when "1") (output when "1") (output when "1") (output when "1") (200 when "1", when "0") (when "1") (when "1") (See table below.)
Reference Divider Frequency Division Ratio Table Don't care Reference divider 1024
-12-
CXA3185/3186N
2-2) CXA3186N control format follows. data order switched CXA3185N. this case control format follows. 2-2-1 A-0/A-2/A-3 Modes (19-bit data format) Front 2-2-2 Mode (18-bit data format) Front 2-2-3 Mode (27-bit data format) Front Don't care
swallow counter frequency division ratio setting main divider frequency division ratio setting band switch control band switch control trap switch control band switch control charge pump current switching test mode selection charge pump reference divider frequency division ratio setting
(output when "1") (output when "1") (output when "1") (output when "1") (200 when "1", when "0") (when "1") (when "1") (See table below.)
Reference Divider Frequency Division Ratio Table Reference divider 1024 Don't care
-13-
CXA3185/3186N
3-wire Data Format
Mode (18-bit data format)
Band switch data
/FMT
Frequency data
DATA CLOCK
ENABLE
A-0/A-2/A-3 Modes (19-bit data format)
Band switch data
/FMT
Frequency data
DATA CLOCK
ENABLE
Mode (27-bit data format)
Band switch data
/FMT
Frequency data
Test data
DATA CLOCK
ENABLE
-14-
CXA3185/3186N
Timing Chart
DATA
1.5V
CLOCK
1.5V
ENABLE
1.5V
Data setup time Data hold time Enable setup time Enable hold time Enable waiting time
-15-
CXA3185/3186N
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-
CXA3185/3186N
Conversion gain Reception frequency (Untuned input) fIF=45MHz
Noise figure Reception frequency (Untuned input, DSB) fIF=45MHz
Conversion gain [dB]
Noise figure [dB]
Reception frequency [MHz] Next adjacent cross modulation Reception frequency (Untuned input)
(Low) (High)
(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-
CXA3185/3186N
Tuning Response Time
(Low) 95MHz (High) 395MHz T=70ms
Varicap voltage
5.0V/div offset 10.0V -90,0000ms 10,0000ms 20.0ms/div 110,000ms
413MHz 847MHz T=70ms
Varicap voltage
5.0V/div offset 10.0V -90,0000ms 10,0000ms 20.0ms/div 110,000ms
-18-
CXA3185/3186N
output spectrum
RL=0dBm 10dB/div
(Low) fRF=55MHz fLO=100MHz input level -40dBm
output [dBm]
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
output [dBm]
CENTER 45.0MHz 1.0kHz
10Hz
SPAN 100.0kHz 30.0s
-19-
CXA3185/3186N
output spectrum
RL=0dBm 10dB/div
(Low) fRF=800MHz fLO=845MHz input level -40dBm
output [dBm]
CENTER 45.0MHz 1.0kHz
10Hz
SPAN 100.0kHz 30.0s
-20-
CXA3185/3186N
Input Impedance
j100
50MHz 1000p
VHFin
350MHz
-j25
-j100
-j50
Input Impedance
j100
UHFin1
1000p
UHFin2
350MHz
-j25
800MHz
-j100
-j50
-21-
CXA3185/3186N
Output Impedance
j100
45MHz
-j25
-j100
-j50
-22-
CXA3185/3186N
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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