SONY CXA3235

CXA3235/3236N
All Band TV Tuner IC with On-chip PLL
Description
The CXA3235/3236N is a monolithic TV tuner IC
which integrates local oscillator and mixer circuits for
VHF band, local oscillator and mixer circuits for UHF
band, an IF amplifier and a tuning PLL onto a single
chip, enabling further miniaturization of the tuner.
The PLL on this IC supports the I2C bus format.
Features
• Low noise figure
• Low power consumption (5 V, 54 mA typ.)
• On-chip tuning PLL (I2C bus format)
• Selection of frequency steps 31.25 kHz, 50 kHz
and 62.5 kHz
• On-chip 4-output band switch
Applications
• TV tuners
• VCR tuners
• CATV tuners
Structure
Bipolar silicon monolithic IC
30 pin SSOP (Plastic)
Absolute Maximum Ratings (Ta = 25 °C)
• Supply voltage VCC1,VCC2 –0.3 to +5.5
VCC3
–0.3 to +10.0
• Storage temperature
Tstg
–55 to +150
• Allowable power dissipation
PD
880
V
V
°C
mW
(when mounted on a substrate)
Operating Conditions
• Supply voltage VCC1, VCC2
VCC3
• Operating temperature
Topr
4.75 to 5.30
4.75 to 9.45
V
V
–25 to +75
°C
Note) Electrostatic discharge strength is weak, and care should be taken in handling this IC.
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—
E97943A81-TE
CXA3235/3236N
Block Diagram and Pin Configuration
SCL
1
SDA
2
ADSW
3
FMT
4
BVL
5
BVH
6
Shift
Register
I2C BUS
Receiver
Divider
1/512,640,1024
REF
OSC
Phase
Detector
Charge
Pump
Band
SW
Driver
LOCK
Det
Divider
14/15bit
BU
7
Prescaler
1/8
8
V.REG
GND1 11
12
VHFin 13
Buffer
UHFin2 15
UHF
OSC
VHF
MIX
Buffer
UHFin1 14
REFOSC
28
CPO
27
CPE
26 LOCK
23
VCC2
22
UOSCB2
21
UOSCE2
20
UOSCE1
19
UOSCB1
18
VOSC2
Buffer
9
MIXout2 10
MS
29
24 GND
Bias
IF AMP
MIXout1
VCC3
25 IF OUT
USW
VCC1
30
VHF
OSC
17 GND
16
UHF
MIX
—2—
VOSC1
CXA3235/3236N
Pin Description
Pin
No.
Symbol
Pin voltage
(V)
Equivalent circuit
22
Description
VCC2
100k
5k
1
1
SCL
22
—
Clock input.
—
Data I/O.
VCC2
100k
5k
2
2
SDA
22
VCC2
150k
3
ADSW
Address selection.
This pin controls bits 2 and 1 of
(when open)
the address byte.
1.25
3
50k
4
FMT
VCC3
30
5
BVL
20k
4
ON : VCC3
OFF : 0
5
6
6
BVH
7
4 : Output for FM TRAP.
5 : Power supply output for
VL band.
6 : Power supply pin for VH
band.
7 : Power supply output for
UHF band.
7
BU
The pin corresponding to the
selected band goes High.
8
VCC1
Analog circuit power supply.
9
MIXout1
10
9
Mixer outputs.
10
MIXout2
11
GND1
—
—
—3—
Analog circuit GND.
CXA3235/3236N
Pin
No.
Symbol
Pin voltage
(V)
Equivalent circuit
Pin used for selecting a
frequency step mode.
1.5
Any of the five modes can be
(when open)
selected by applying an input
voltage.
VCC2
12
MS
120k
2.3
(VHF)
0
(UHF)
50k
13
14
VHFin
13
12
14
UHFin1
15
3k
15
3k
UHFin2
18
16
VOSC1
8
16
VCC1
600
8p
50
3k
18
VOSC2
17
GND
19
UOSCB1
3k
15p
19
20
20
21
22
VCC1
UOSCE1
3k
21
UOSCE2
22
UOSCB2
Description
3k
—4—
0
(VHF)
2.3
(UHF)
0
(VHF)
2.3
(UHF)
3
(VHF)
3.1
(UHF)
3.5
(VHF)
5.0
(UHF)
—
3.2
(VHF)
2.9
(UHF)
—
(VHF)
2.4
(UHF)
—
(VHF)
2.4
(UHF)
3.2
(VHF)
2.9
(UHF)
VHF input.
The input format is unbalanced
input.
UHF inputs.
The input method can be
selected from balanced input
or unbalanced input.
External resonance circuit
connection for VHF oscillator.
GND
External resonance circuit
connection for UHF oscillator.
CXA3235/3236N
Pin
No.
23
24
Symbol
Equivalent circuit
VCC2
GND2
—
—
VCC1
8
25
Pin voltage
Description
(V)
—
PLL circuit power supply.
—
PLL circuit GND.
IFOUT
2.3
40
IF output.
25
VCC2
22
5.0
(Lock)
40k
26
26
LOCK
0.2
(UNLock)
VCC2
27
22
CPE
LOCK detection.
High when locked, Low when
unlocked.
0.6
NPN transistor connection for
varicap diode drive.
2.0
Charge pump output.
Connect a loop filter.
4.3
Crystal connection for
reference oscillator.
—
Power supply for external
supply.
200
28
500
28
27
CPO
20k
60k
30p
29
REFOSC
30
VCC3
30p
29
—5—
CXA3235/3236N
Electrical Characteristics
Circuit Current
Item
Circuit current A
Symbol
AICCV
AICCU
Circuit current D
DICC
See the Electrical Characteristics Measurement Circuit.
(VCC=5 V, Ta=25 °C)
Measurement conditions
VCC1 current, Band switch output
open during VHF operation
VCC1 current, Band switch output
open during UHF operation
VCC2 current
Min.
Typ.
Max.
Unit
30
41
55
mA
31
42
56
mA
7
11
15
mA
Measurement conditions
VHF operation fRF = 55 MHz
VHF operation fRF = 360 MHz
UHF operation fRF = 360 MHz
UHF operation fRF = 800 MHz
VHF operation fRF = 55 MHz
VHF operation fRF = 360 MHz
UHF operation fRF = 360 MHz
UHF operation fRF = 800 MHz
VHF operation
fD = 55 MHz, fUD = ±12 MHz
VHF operation
fD = 360 MHz, fUD = ±12 MHz
UHF operation
fD = 360 MHz, fUD = ±12 MHz
UHF operation
fD = 800 MHz, fUD = ±12 MHz
50 Ω load saturation output
VHF operation fOSC = 100 MHz
∆f from 3 s to 3 min after switch ON
VHF operation fOSC = 405 MHz
∆f from 3 s to 3 min after switch ON
UHF operation fOSC = 405 MHz
∆f from 3 s to 3 min after switch ON
UHF operation fOSC = 845 MHz
∆f from 3 s to 3 min after switch ON
VHF operation fOSC = 100 MHz
∆f when VCC 5 V changes ±5 %
VHF operation fOSC = 405 MHz
∆f when VCC 5 V changes ±5 %
UHF operation fOSC = 405 MHz
∆f when VCC 5 V changes ±5 %
UHF operation fOSC = 845 MHz
∆f when VCC 5 V changes ±5 %
Min.
21
22
26
27
Typ.
24
25
29
30
12
11
8.5
9.5
Max.
27
28
32
33
15
14
12.5
13.5
Unit
dB
dB
dB
dB
dB
dB
dB
dB
97
101
dBµ
96
100
dBµ
92
96
dBµ
88
92
dBµ
+5
+10
dBm
OSC/MIX/IF Amplifier Block
Item
Symbol
Conversion gain ∗1 CG1
CG2
CG3
CG4
Noise figure ∗1, ∗2 NF1
NF2
NF3
NF4
1 % cross
CM1
modulation ∗1, ∗3
CM2
CM3
CM4
Maximum output power
Switch ON drift ∗4
Pomax
∆fsw1
∆fsw2
∆fsw3
∆fsw4
Supply voltage drift
∆fst1
∗4
∆fst2
∆fst3
∆fst4
—6—
±300
kHz
±400
kHz
±400
kHz
±500
kHz
±150
kHz
±250
kHz
±200
kHz
±250
kHz
CXA3235/3236N
∗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 –30 dBm. Undesired signal (fUD) is 100 kHz, 30 % AM at ±12 MHz.
The measurement value is undesired signal level, it measured with a spectrum analyzer at S/I=46 dB.
∗4 Value when the PLL is not operating.
PLL Block
Item
Symbol
SDA, SCL
“H” level input voltage VIH
“L” level input voltage VIL
“H” level input current IIH
“L” level input current IIL
SDA “L” output voltage LSDA
Clock input hysteresis CIHYS
Clock rate
CIRATE
CPO (charge pump)
Output current 1
ICPO1
Output current 2
ICPO2
LeakCP1
Leak current 1
LeakCP2
Leak current 2
REFOSC
Oscillator
FXTOSC
frequency range
CXTOSC
Input capacitance
VXTOSC
Drive level
BVL, BVH, BU (Band SW)
IBS1
Output current
VSAT1
Saturation voltage
LeakBS1
Leak current
FMT (Band SW)
Output current
Saturation voltage
Leak current
Bus timing
SCL clock frequency
Start waiting time
Start hold time
Low hold time
High hold time
Start setup time
Data hold time
Data setup time
Rise time
Fall time
Start setup time
Measurement conditions
Min.
Max.
Unit
VCC
1.5
–0.1
–2
0.4
0.65
0.5
V
V
µA
µA
V
V
MHz
±75
±300
30
100
µA
µA
nA
nA
12
MHz
20.5
pF
mVp-p
100
0.5
–25
200
3
mA
mV
µA
75
0.03
–7
150
0.1
mA
mV
µA
400
kHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
3
GND
VIH = VCC
VIL = GND
Sink current = 3 mA
Byte4/Bit6 = 0
Byte4/Bit6 = 1
Byte4/Bit6 = 0
Byte4/Bit6 = 1
0
–1
0.25
0.4
±35
±140
±50
±200
3
17.5
200
When ON
When ON Sink current = 20 mA
When OFF
IBS2
When ON
VSAT2
When ON Sink current = 5 mA
LeakBS2 When OFF
fSCL
tWSTA
tHSTA
tLOW
tHIGH
tSSTA
tHDAT
tSDAT
tR
tF
tSSTO
Typ.
See Timing Chart on Page 15.
See Timing Chart on Page 15.
See Timing Chart on Page 15.
See Timing Chart on Page 15.
See Timing Chart on Page 15.
See Timing Chart on Page 15.
See Timing Chart on Page 15.
See Timing Chart on Page 15.
See Timing Chart on Page 15.
See Timing Chart on Page 15.
—7—
0
1300
600
1300
600
600
1300
600
19
400
300
300
600
CXA3235/3236N
Electrical Characteristics Measurement Circuit
+30V
22k
8200p
1.2k
47k
0.047µ
33p
+5V
47k
2SC2785
3.3µ
47k
1n
2.5ø2.5t
0.5p
0.5p
7p
LOCK IF OUT
1T363
3.2ø
5.5t
1n
47k
3.0ø
2.5t
1n
47k
51
BVH
47k
1T363
47k
XTAL
4MHz
56p 47k 56p
1n
1p
1T362
1n
16p
CPE
LOCK
IFOUT
22
21
20
19
18
17
16
VOSC1
CPO
23
GND
REFOSC
24
VOSC2
25
8p
UOSCB1
26
4p
UOSCE2
27
UOSCB2
28
VCC2
29
GND2
30
VCC3
8p
UOSCE1
100p
CL
DA
CE
FMT
BVL
BVH
BU
VCC1
MIX out1
MIX out2
GND1
MS
VHF in
UHFin1
UHFin2
CXA3235/3236N
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
2k
1n
4.5t
SCL
BVL
0.5p
150p
1T363
51
1n
1n
1n
4.5t
SDA ADSW
56p
FMT
BVL
BVH
BU
100
56p
1n
VHF IN
3.3µ
1n
+5V
—8—
UHF IN
47k
CXA3235/3236N
Description of Functions
The CXA3235/3236N is a terrestrial wave broadcast tuner IC which converts frequencies to IF in order to
tune and detect only the desired reception frequency of VHF, CATV and UHF band signals.
In addition to the mixer, local oscillator and IF amplifier circuits required for frequency conversion to IF, this
IC also integrates a PLL circuit for local oscillator frequency control onto a single chip.
The functions of the various circuits are described below.
1. Mixer circuit
This circuit outputs the frequency difference between the signal input to VHFIN or UHFIN and the local
oscillation signal.
2. Local oscillator circuit
A VCO is formed by externally connecting an LC resonance circuit composed of a varicap diode and
inductance.
3. IF amplifier circuit
This circuit amplifies the mixer IF output, and consists of an amplifier stage and low impedance output
stage.
4. PLL circuit
This PLL circuit fixes the local oscillator frequency to the desired frequency. It consists of a prescaler, main
divider, reference divider, phase comparator, charge pump and reference oscillator. The control format
supports the I2C bus format. The following five modes can be selected according to the combination of the
frequency division values of the main and reference dividers.
Mode
B-0
B-1
B-2
B-3
B-4
Main divider
15 bit
14 bit
15 bit
15 bit
15 bit
—9—
Reference divider
1024 fixed
512 fixed
640 fixed
512 fixed
512/1024 switching
CXA3235/3236N
Description of Analog Block Operation
(See the Electrical Characteristics Measurement Circuit.)
VHF oscillator circuit
• This circuit is a differential amplifier type oscillator circuit.
Pin 18 is the output and Pin 16 is the input.
Oscillation is performed by connecting an LC resonance circuit including a varicap to Pin 18 via coupled
capacitance, inputting to Pin 16 with feedback capacitance, and applying positive feedback.
• The amplifier between Pins 16 and 18 has an extremely high gain. Therefore, care should be taken to
avoid creating parasitic capacitance, resistance or other feedback loops as this may produce abnormal
oscillation.
VHF mixer circuit
• The mixer circuit employs a double balance mixer with little local oscillation signal leakage.
The input format is base input type, with Pin 12 grounded and the RF signal input to Pin 13.
• The RF signal is inserted from the oscillator, converted to IF frequency and output from Pins 9 and 10.
• Pins 9 and 10 are open collectors, so power must be supplied externally. The electric potential of Pins 9
and 10 at this time must be DC 4.0 V or more.
UHF oscillator circuit
• This oscillator circuit is designed so that two collector ground type Colpitts oscillators perform differential
oscillation operation via an LC resonance circuit including a varicap. Connect resonator capacitance
composing colpitts oscillators between Pins 19 and 20, Pins 20 and 21, and Pins 21 and 22.
• Then, LC resonance circuit comprising a varicap diode is connected across Pins 19 and 22.
UHF mixer circuit
• This circuit employs a double balance mixer like the VHF mixer circuit.
The input format is base input type, with Pins 14 and 15 as the RF input pins. The input method can be
selected from balanced input consisting of differential input to Pins 14 and 15 or unbalanced input
consisting of grounding Pin 14 via a capacitor and input to Pin 15.
• Pins 9 and 10 are the mixer outputs.
• Pins 9 and 10 are open collectors, so power must be supplied externally. The electric potential of Pins 9
and 10 at this time must be DC 4.0 V or more.
IF amplifier circuit
• The signals frequency converted by the mixer are output from Pins 9 and 10, and at the same time are
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 Ω.
—10—
CXA3235/3236N
Description of PLL Block
The PLL on this IC supports the I2C bus control format. The control pins are as shown in the table below.
Symbol
ADSW
SCL
SDA
Description
Address selection
SCL input
SDA I/O
1) Mode Setting Method
The modes for each frequency step are set according to the MS pin voltage.
Mode
MS pin voltage
B-0
B-1
B-2
B-3
0 to 0.15 VCC
OPEN
0.45 VCC to 0.55 VCC
0.65 VCC to 0.75 VCC
Main
divider
15 bit
14 bit
15 bit
15 bit
B-4
0.85 VCC to VCC
15 bit
Reference
divider
1024
512
640
512
512/
640/
1024
Reference frequency
3.90625 kHz
7.8125 kHz
6.25 kHz
7.8125 kHz
7.8125 kHz/
6.25 kHz/
3.90625 kHz
Frequency
step∗
31.25 kHz
62.5 kHz
50 kHz
62.5 kHz
62.5 kHz/
50 kHz/
31.25 kHz
∗ Frequency step is for when X’tal OSC = 4 MHz.
2) Address Setting
The responding address can be changed according to the ADSW pin voltage, so that multiple PLL can
exist within one system.
Address
ADSW pin voltage
0 to 0.1 VCC
OPEN or 0.2 VCC to 0.3 VCC
0.4 VCC to 0.6 VCC
0.9 VCC to VCC
MA1
0
0
1
1
MA0
0
1
0
1
—11—
CXA3235/3236N
3) Programming
The VCO lock frequency is obtained according to the following formula.
fosc = fref × 8 × (32 M + S)
fosc : local oscillator frequency
fref : reference frequency
8 : prescaler fixed frequency division ratio
M : main divider frequency division ratio
S : swallow counter frequency division ratio
The variable frequency division ranges of M and S are as follows, and are set as binary.
32 ≤ M ≤ 1023 (32 ≤ M ≤ 511 for B-1 mode)
0 ≤ S ≤ 31
3-1) The CXA3235N control format is as follows.
3-1-1 :
B-0/B-1/B-2/B-3 Modes
Write-mode :
Slave Receiver
MODE
Address byte
Divider byte 1
Divider byte 2
Control byte
Band SW byte
MSB
bit7
1
0
M2
1
X
bit6
1
M9∗
M1
CP
X
bit5
0
M8
M0
T1
X
bit4
0
M7
S4
CD
X
bit3
0
M6
S3
X
BU
bit2
MA1
M5
S2
X
FMT
bit1
MA0
M4
S1
X
BVH
LSB
bit0
0
M3
S0
OS
BVL
A
A
A
A
A
bit1
MA0
M4
S1
R0
BVH
LSB
bit0
0
M3
S0
OS
BVL
A
A
A
A
A
X : Don’t care
∗ M9 is “0” for B-1 mode.
3-1-2 :
B-4 Mode
Write-mode :
Slave Receiver
MODE
Address byte
Divider byte 1
Divider byte 2
Control byte
Band SW byte
MSB
bit7
1
0
M2
1
X
bit6
1
M9
M1
CP
X
bit5
0
M8
M0
T1
X
X : Don’t care
—12—
bit4
0
M7
S4
CD
X
bit3
0
M6
S3
X
BU
bit2
MA1
M5
S2
R1
FMT
CXA3235/3236N
3-2) The CXA3236N control format is as follows.
The BU and FMT data order is switched for the CXA3235N.
3-2-1 :
B-0/B-1/B-2/B-3 Modes
Write-mode
: Slave Receiver
MSB
MODE
bit7
Address byte
1
Divider byte 1
0
Divider byte 2
M2
Control byte
1
Band SW byte
X
bit6
1
M9∗
M1
CP
X
bit5
0
M8
M0
T1
X
bit4
0
M7
S4
CD
X
bit3
0
M6
S3
X
FMT
bit2
MA1
M5
S2
X
BU
bit1
MA0
M4
S1
X
BVH
LSB
bit0
0
M3
S0
OS
BVL
A
A
A
A
A
bit1
MA0
M4
S1
R0
BVH
LSB
bit0
0
M3
S0
OS
BVL
A
A
A
A
A
X : Don’t care
∗ M9 is “0” for B-1 mode.
3-2-2 :
B-4 Mode
Write-mode
: Slave Receiver
MODE
Address byte
Divider byte 1
Divider byte 2
Control byte
Band SW byte
MSB
bit7
1
0
M2
1
X
bit6
1
M9
M1
CP
X
bit5
0
M8
M0
T1
X
bit4
0
M7
S4
CD
X
bit3
0
M6
S3
X
FMT
bit2
MA1
M5
S2
R1
BU
X : Don’t care
A
MA0, MA1
M0 to
S0 to
T1
CD
OS
CP
BVL
BVH
FMT
BU
R0, R1
:
:
:
:
:
:
:
:
:
:
:
:
:
Acknowledge bit
address setting
main divider frequency division ratio setting
swallow counter frequency division ratio setting
test mode selection
(when “1”)
charge pump OFF
(when “1”)
varicap output OFF
(when “1”)
charge pump current switching
(200 µA when “1”, 50 µA when “0”)
VL band switch control
(output PNP Tr ON when “1”)
VH band switch control
(output PNP Tr ON when “1”)
FM trap switch control
(output PNP Tr ON when “1”)
UHF band switch control
(output PNP Tr ON when “1”)
Reference divider frequency division ratio setting
—13—
CXA3235/3236N
Reference Divider Frequency Division Ratio Table
R1
0
1
X
R0
1
1
0
Reference divider
1024
512
640
X : Don’t care
3-3) The read data format is as shown below.
Read-mode
: Slave Transmitter
MODE
Address byte
Status byte
A
PR
FL
MA0, MA1
:
:
:
:
bit7
1
PR
bit6
1
FL
bit5
0
1
acknowledge bit
power-on reset
lock detection signal
address setting
—14—
bit4
0
1
bit3
0
1
bit2
MA1
X
bit1
MA0
X
bit0
1
X
A
A
CXA3235/3236N
I2C Bus Timing Chart
tWSTA
SDA
tR
tSSTA
tF
tSSTO
SCL
tHSTA
START
tLOW
tHIGH
tSDAT
CLOCK
tHDAT
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
tR
tF
—15—
=Data setup time
=Data hold time
=Stop setup time
=Rise time
=Fall time
STOP
CXA3235/3236N
Circuit current vs. Supply voltage 1
Circuit current vs. Supply voltage 2
15
45
DICC - Circuit current [mA]
AICC - Circuit current [mA]
UHF
VHF
40
35
4.7
4.8
4.9
5.0
5.2
5.1
5.3
10
5
5.4
4.7
4.8
VCC1 - Supply voltage [V]
Band SW output voltage vs. Output current (BU, BVH, BVL)
9.2
9.0
4.9
5.0
5.1
5.2
5.3
5.4
VCC2 - Supply voltage [V]
Band SW output voltage vs. Output current (FMT)
9.2
9.0
VCC3=9V
VCC3=9V
8.8
Output voltage [V]
Output voltage [V]
8.8
8.6
5.0
VCC3=5V
4.8
VCC3=5V
4.6
0
5
10
15
20
4.4
25
Output current [mA]
I/O characteristics (Untuned input)
0
–20
fRF=100MHz (VHF)
fRF=450MHz (UHF)
fIF is both f=45MHz
–40
–60
–60
–50
–40
–30
0
1
2
3
4
Output current [mA]
20
IF output level [dBm]
5.0
4.8
4.6
4.4
8.6
–20
–10
0
10
RF input level [dBm]
—16—
5
6
CXA3235/3236N
Noise figure vs. Reception frequency (Untuned input, in DSB)
20
fIF=45MHz
NF - Noise figure [dB]
CG - Conversion gain [dB]
Conversion gain vs. Reception frequency (Untuned input)
40
fIF=45MHz
35
30
UHF
VHF (Low) VHF (High)
25
20
15
10
15
VHF (Low)
VHF (High)
10
UHF
5
5
0
0
0
100 200 300 400 500 600 700 800 900
0
100 200 300 400 500 600 700 800 900
Reception frequency [MHz]
Next adjacent cross modulation vs. Reception frequency
(Untuned input)
120
Oscillation frequency power supply fluctuation (PLL off)
400
VCC+5%
VCC–5%
(VCC=5V)
300
100
200
80
+B drift [kHz]
CM - Cross modulation [dBµ]
Reception frequency [MHz]
fIF=45MHz
fUD=fD+12MHz
fUD=fD–12MHz
(100kHz, 30% AM)
60
40
VHF (High)
VHF (Low)
100
UHF
0
–100
–200
20
0
–300
0
–400
100 200 300 400 500 600 700 800 900
0
Reception frequency [MHz]
Oscillation frequency [MHz]
PCS beat characteristics
+20
+10
fIF
0
IF output level [dBm]
–10
–20
–30
–40
fLocal=129MHz
fP=83.25MHz
fC=86.83MHz, (fP–12dB)
fS=87.75MHz, (fP–1.7dB)
fIF=45.75MHz
fBeat=fIF±920kHz
–50
fBeat
–60
–70
–80
–30
–20
–10
100 200 300 400 500 600 700 800 900
0
+10
SG output level [dBm]
(fP level)
—17—
+20
CXA3235/3236N
Tuning Response Time
VHF (Low) 95MHz → VHF (High) 395MHz
T=70ms
5.0V/div
offset 10.0V
–90,0000ms
10,0000ms
20.0ms/div
110,000ms
UHF 413MHz → UHF 847MHz
T=70ms
5.0V/div
offset 10.0V
–90,0000ms
10,0000ms
20.0ms/div
—18—
110,000ms
CXA3235/3236N
IF output spectrum
RL=0dBm
10dB/div
VHF (Low)
fRF=55MHz
fLO=100MHz
RF input level : –40dBm
CENTER 45.0MHz
RES BW 1.0kHz
VBW 10Hz
IF output spectrum
SPAN 100.0kHz
SWP 30.0s
RL=0dBm
10dB/div
VHF (High)
fRF=350MHz
fLO=395MHz
RF input level : –40dBm
CENTER 45.0MHz
RES BW 1.0kHz
VBW 10Hz
—19—
SPAN 100.0kHz
SWP 30.0s
CXA3235/3236N
IF output spectrum
RL=0dBm
10dB/div
UHF (Low)
fRF=800MHz
fLO=845MHz
RF input level : –40dBm
CENTER 45.0MHz
RES BW 1.0kHz
VBW 10Hz
—20—
SPAN 100.0kHz
SWP 30.0s
CXA3235/3236N
VHF Input Impedance
j50
50MHz
50
VHFin
0
j100
MS
j25
12
13
1000p
S11
350MHz
–j25
–j100
–j50
UHF Input Impedance
j50
UHFin2
0
j100
UHFin1
j25
14
15
50
1000p
S11
350MHz
800MHz
–j25
–j50
—21—
–j100
CXA3235/3236N
IF output Impedance
j50
j25
0
j100
50
–j25
45MHz
–j100
–j50
—22—
CXA3235/3236N
Package Outline
Unit : mm
30PIN SSOP (PLASTIC)
+ 0.2
1.25 – 0.1
∗9.7 ± 0.1
1
+ 0.1
0.22 – 0.05
7.6 ± 0.2
16
∗5.6 ± 0.1
30
0.10
A
15
+ 0.05
0.15 – 0.02
0.65
0.13 M
0.5 ± 0.2
0.1 ± 0.1
0° to 10°
NOTE: Dimension “∗” does not include mold protrusion.
DETAIL A
PACKAGE STRUCTURE
PACKAGE MATERIAL
EPOXY RESIN
SONY CODE
SSOP-30P-L01
LEAD TREATMENT
SOLDER/PALLADIUM
PLATING
EIAJ CODE
SSOP030-P-0056
LEAD MATERIAL
42/COPPER ALLOY
PACKAGE MASS
0.1g
JEDEC CODE
NOTE : PALLADIUM PLATING
This product uses S-PdPPF (Sony Spec.-Palladium Pre-Plated Lead Frame).
—23—