Sony CXA3085AN Datasheet

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E97758-TE

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.

All Band TV Tuner IC with On-chip PLL

CXA3085AN

Absolute Maximum Ratings (Ta = 25 °C)

• Supply voltage VCC1,VCC2 –0.3 to +5.5 V

VCC3 –0.3 to +10.0 V

• Storage temperature Tstg –55 to +150 °C

• Allowable power dissipation

PD 880 mW

(when mounted on a substrate)

Operating Conditions

• Supply voltage VCC1, VCC2 4.75 to 5.3 V

VCC3 4.75 to 9.45 V

• Operating temperature Topr –20 to +75 °C

Description

The CXA3085AN 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.

Features

• Low noise figure

• Low power consumption (5 V, 54 mA typ.)

• On-chip tuning PLL (3-wire bus format)

• Selection of frequency steps 31.25 kHz, 50 kHz

and 62.5 kHz

• On-chip 4-output band switch

• SSOP 30-pin package

Applications

• TV tuners

• VCR tuners

• CATV tuners

Structure

Bipolar silicon monolithic IC

30 pin SSOP (Plastic)

Note) Electrostatic discharge strength is weak, and care should be taken in handling this IC.

For the availability of this product, please contact the sales office.

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CXA3085AN

Block Diagram and Pin Configuration

Input

Buffer

Bias

USW

IF AMP

CL DA CE

FMT

BVL

BVH

BU

VCC1

MIXout1

MIXout2

GND1

BYP

VHFin

UHFin1 UHFin2

Shift Register

Band SW Driver

V.REG

VHF

MIX

UHF

MIX

Buffer

VHF

OSC

UHF OSC

Buffer

Phase Detector

Charge Pump

LOCK Det

Divider 14/15bit

Prescaler 1/8

REF OSC

Divider 1/512,640,1024

1 2

3

4

5

6

7

8

9

10 11

12

13

14 15

VOSC1

GND

VOSC2

UOSC1

MS

UOSC2

V

CC2

GND2

CPE

V

CC3

CPO

REFOSC

NC

IF OUT

LOCK

16

17

18

20

21

22

23

24

25

26

27

28

29

19

30

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CXA3085AN

Pin Description

Symbol Equivalent circuit

Pin voltage

Description

No. (V)

1

2

3

4

5

6

7 8

9

10

11

CL

DA

CE

FMT

BVL

BVH

BU

VCC1

MIXout1

MIXout2

GND1

—

1.25

(when open)

ON : 4.9

OFF : 0

—

Clock input.

Data input.

Enable pin.

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.

The selected band pin goes High.

Analog circuit power supply.

Mixer outputs.

Analog circuit GND.

5k

100k

1

22

VCC2

5k

100k

2

22

VCC2

3

150k

50k

VCC2

22

20k

VCC3

4 5

6 7

30

9

10

—

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CXA3085AN

Symbol Equivalent circuit

Pin voltage

Description

No. (V)

12

13

14

15

16

18

17

19

21

20

BYP

VHFin

UHFin1

UHFin2

VOSC1

VOSC2

GND

UOSC1

UOSC2

MS

2.5

(when open)

2.3

(VHF)

0

(UHF)

0

(VHF)

2.3

(UHF)

0

(VHF)

2.3

(UHF)

3

(VHF)

3.1

(UHF)

4.0

(VHF)

5.0

(UHF)

—

3.2

(VHF)

2.9

(UHF)

3.2

(VHF)

2.9

(UHF)

1.5

(when open)

VHF input GND and FMT/BU data switching.

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.

Frequency step mode selection. Five modes can be selected according to the applied voltage.

20k

80k

VCC2

80k

1213

3k3k

14

15

50

VCC1

50k

18 16

8

15p

8p

3k

VCC1

3k

19 21

3k

VCC2

20

120k

50k

22

—5—

CXA3085AN

Symbol Equivalent circuit

Pin voltage

Description

No. (V)

22 23 24

25

26

27

28

29

30

VCC2

GND2

NC

IFOUT

LOCK

CPE

CPO

REFOSC

VCC3

— — —

2.3

5.0

(Lock)

0.2

(UNLock)

0.6

2.0

4.3

—

PLL circuit power supply. PLL circuit GND. No connected.

IF output.

LOCK detection. High when locked, Low when unlocked.

NPN transistor connection for varicap diode drive.

Charge pump output. Connect a loop filter.

Crystal connection for reference oscillator.

Power supply for external supply.

VCC1

25

40

8

26

VCC2

22

40k

28

20k

500

27

22

200

VCC2

60k

29

30p

— — —

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CXA3085AN

Electrical Characteristics See the Electrical Characteristics Measurement Circuit. Circuit Current (VCC=5 V, Ta=25 °C)

Item

Circuit current A

Circuit current D

Symbol AICCV AICCU

DICC

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

Item

Conversion gain

∗1

Noise figure ∗1,

∗2

1 % cross modulation ∗1,

∗3

Maximum output power

Switch ON drift

∗4

Supply voltage drift

∗4

Symbol CG1 CG2 CG3 CG4 NF1 NF2 NF3 NF4

CM1

CM2

CM3

CM4 Pomax

∆fsw1

∆fsw2

∆fsw3

∆fsw4

∆fst1

∆fst2

∆fst3

∆fst4

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. Typ. Max. Unit

21 24 27 dB 22 25 28 dB 26 29 32 dB 27 30 33 dB

12 15 dB 11 14 dB

8.5 12.5 dB

9.5 13.5 dB

97 101 dBµ

96 100 dBµ

92 96 dBµ

88 92 dBµ +7 +10 dBm

±300 kHz

±400 kHz

±500 kHz

±150 kHz

±250 kHz

±200 kHz

±250 kHz

OSC/MIX/IF Amplifier Block

∗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. The measurement value is undesired signal level, it measured with a spectrum analyzer at S/I=46 dBm.

∗4

Value when the PLL is not operating.

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CXA3085AN

Item CL and DA pins “H” level input voltage “L” level input voltage “H” level input current “L” level input current CE pin “H” level input voltage “L” level input voltage “H” level input current “L” level input current CPO (charge pump) Output current Leak current LOCK “H” output voltage “L” output voltage REFOSC Oscillator frequency range Input capacitance Drive level BVL, BVH, BU (Band SW) Output current Saturation voltage Leak current FMT (Band SW) Output current Saturation voltage Leak current Bus timing Data setup time Data hold time Enable waiting time Enable setup time Enable hold time

Symbol

VIH VIL IIH IIL

VIHE VILE IIHE IILE

ICPO LeakCP

VLOCKH VLOCKL

FXTOSC CXTOSC

VXTOSC

IBS1 VSAT1 LeakBS1

IBS2 VSAT2 LeakBS2

tSD tHD tWE tSE tHE

Measurement conditions

VIH = VCC VIL = GND

VIHE=VCC VILE=GND

When locked When unlocked

When ON When ON Sink current = 20 mA When OFF

When ON When ON Sink current = 5 mA When OFF

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

Min. Typ. Max. Unit

3 VCC V

GND 1.5 V

0 –0.1 µA

–1 –2 µA

3 VCC V

GND 1.5 V

100 130 µA –30 –45 µA

±50 ±75 µA

30 nA

VCC–0.5 VCC V

0 0.5 V

3 12 MHz

17.5 19 20.5 pF 200 400 mV

–25 mA

100 200 mV

0.5 3 µA

–7 mA

75 150 mV

0.03 0.1 µA

300 ns 600 ns 300 ns 300 ns 600 ns

PLL Block