Sony CXA1592Q, CXA1592R Datasheet

Encoder for CCD Color Camera

Description

The CXA1592Q/R is a bipolar IC developed as an

encoder for CCD color cameras.

Color difference and luminance signals are input to be output as composite video and Y/C separate signals.

The CXA1592 is a variant of the CXA1392 in which the down/up ratio and level of shapness signal have been changed from 1 : 3 to 1.5 : 1.5.

Features

• Carrier balance adjustment unnecessary

(Carrier leak above 36 dB against burst)

• High S/N

• Low power consumption (140mW)

Applications

CCD camera

CXA1592Q/R

CXA1592Q

48 pin QFP (Plastic)

Structure

Bipolar silicon monolithic IC

Operating Conditions

• Supply voltage VCC 4.75 to 5.25 V

• Ambient temperature Topr –20 to +75 °C

CXA1592R

48 pin LQFP (Plastic)

Absolute Maximum Ratings (Ta = 25°C)

• Supply voltage VCC 7V

•Storage temperature Tstg –65 to +150 °C

• Allowable power dissipation PD 600 mW

Block Diagram and Pin Configuration

SHPLEVEL

YTBLK

NOISESLICE

YHCLP

YHIN

YL-YHCLP

YL-YHIN

AGND

CLP4

CLP2

DLE

36

35

37

38

39

40

41

42

43

44

45

1/2

BURST

CLP4

SHPCLP1

34

HAP GAIN

SLICE BLK

CLP4

BLK

CLP4

3/2

CLP2

DLD

SHPCLP2

32

33

YTBLK

MOD

31

ADO

BLK

SHPOUT

30

LEVEL

CONT

GC

1.4 TYP

2/3 TYP

ADO

YLEVEL

FADERMODE

29

LEVEL

CONT

CLP2 WC

SETUP SYNC

GC

SETUPLEVEL

FADERSIG

28

27

LEVEL

CONT

LOGIC REF V

SYNC

C BLK

SYNCLEVEL

25

26

ADO

×1.6

SYNC

24

WCLEVEL

23

SETUPCLP

22

YOUT

VOUT

21

20

CHROMA

19

DGND

18

CIN

17

AV

16

COUT

CC

BLEVEL

B-YIN

B-YCLP

46

47

48

1

R-YIN

CLP4

BURST

B.GEN

2

R-YCLP

BFG

3

CC

DV

3/2

CLP2

4

4FSCIN

5

MOD

BLK

LALT

1/4

6

NC1

7

NC2

8

FSCOUT

LOGIC

9

BFG

10

11

BF

CBLK

CLP4ADO

MODE

GEN

12

CTBLK

15

14

13

CSY

CSAGC

MODE

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 –

E91537A78

Pin Description

Pin No.

1

R-Y IN 3V

Symbol Pin voltage Equivalent circuit Description

AVCC

1k

140

1

2k

R-Y signal input pin. Clamped internally through C cut input.

140

10µA

AGND

CXA1592Q/R

AVCC

1k

2

R-Y CLP

3.4V

2

140

2k

Pin connecting the capacitor for R-Y modulator clamp. Setting the capacitance to too small a value will enlarge the carrier leak.

140

3

DVCC 5V

3

14.32MHz

20k

4

4FSCIN

4

1Vp-p

DC 2.5V

10µA

AGND

DVCC

1k

80µA80µA

DGND

0.1µF and above is recommended.

Power supply pin for the 1/4 counter block.

Input pin for the 4FSC used to make up the Sub Carrier. Input through C cut. Set amplitude to over 500mVp-p.

DVCC

1k

140

5

LALT 0V

5

Input pin for Line Alternate signal during PAL mode. VTH is at 2.5V. Input a pulse with an amplitude larger than VTH ±0.5V.

80µA

DGND

Set to GND during NTSC mode.

– 2 –

CXA1592Q/R

Pin No.

6

Symbol Pin voltage Equivalent circuit Description

NC1 —

7 NC2 —

8

9

FSCOUT 5V

BFG

5V

0V

Not for use. Keep open

Not for use. Keep open.

DVCC

200

Outputs a sub carrier with the same phase as B-Y. When not in use, connection

140

8

to VCC prevents output and allows for 600µA of current saving.

500µA

DGND

Determining phase to 4FSC is impossible.

Inserts a pulse slightly larger

AVCC

1k

140

9

40µA

AGND

than BF on both ends.

BF

BFG

VTH is at 2.5V. Input a pulse with an amplitude larger than VTH ±0.5V.

10

11

BF

CBLK

5V

0V

10

11

140

1k

40µA

AVCC

20µA

AGND

AVCC

AGND

Inputs BF (burst flag) pulse. During analog burst, the input pulse smoothens the waveform. The input pulse waveform becomes the envelope of the analog burst waveform.

3.5V

2.5V

During the usual burst, be sure to input the pulse.

Inputs CBLK (composite blanking) pulse. VTH is at 2.5V. Input a pulse with an amplitude larger than VTH ±0.5V.

– 3 –

CXA1592Q/R

Pin No.

12

13

14

Symbol Pin voltage Equivalent circuit Description

Inputs CT (chroma titler) pulse. This signal prevents the application of chroma suppress during the titler signal period. VTH is at 2.5V. Input a pulse with an amplitude larger than VTH ±0.5V.

CTBLK

5V

AVCC

1k

140

12

0V

80µA

AGND

Selected NTSC, PAL or NTSC × 2, PAL × 2 modes. 0V : NTSC × 1 Normal

2.5V: NTSC × 2 Analog

3.5V: PAL × 2 Analog 5V : PAL × 1 Normal

Suppresses chroma signal at the AGC gain control signal.

MODE 0V

CSAGC 0V

AVCC

1k

140

13

60µA

AGND

AVCC

1k

140

14

3V (100%) to 4.2V (50%)

40µA

AGND

burst burst burst burst

15

16

CSY

2.4V

COUT 2.8V

15

16

140

10µA

1k

200

1500µA

2k

AVCC

Suppresses chroma signal at the Y signal. 200mV (100%) to 700mV (0%) Inputs at C cut. Clamped internally.

AGND

AVCC

Chroma signal output pin. Output as rectangular waves.

AGND

– 4 –

CXA1592Q/R

Pin No.

17

18

Symbol Pin voltage Equivalent circuit Description

AVCC

5V

17

AVCC

Power supply pin for other than 1/4 counter block.

Input pin for chroma signal passed through BPF. Internally biased with a 20kΩ resistance.

CIN 2.5V

20k

18

Input at C cut.

AGND

19

20

21

DGND 0V

CHROMA

VOUT

2V

1.8V

20

21

19

200

600µA

200

600µA

DGND

140

AVCC

AGND

AVCC

AGND

GND pin for 1/4 counter block.

Signals input from CIN are amplified and output through this pin. Chroma signal output pin when used for Y/C separation output.

Output pin of composite video signal. When not in use, connection to VCC allows for 900µA of current saving.

– 5 –

CXA1592Q/R

Pin No.

22

23

24

Symbol

YOUT

Pin voltage Equivalent circuit Description

2.4V

SETUPCLP 3.3V

WC LEVEL 3.4V

24

23

22

140

AVCC

200

Y signal output pin when used for Y/C separation output.

600µA

AGND

AVCC

2k

1k

Connecting pin for the white clip clamp capacitor. Over 0.1µF is recommended.

10µA

AGND

AVCC

1k

White clip level control pin.

1.6V (550mV) to 5V (1110mV)

80µA

AGND

25

26

5V

SYNC

SYNC LEVEL 0V

0V

25

26

140

1k

80µA

AVCC

Sync pulse input pin. VTH is at 2.5V. Input a pulse with an amplitude larger than VTH ±0.5V.

AGND

AVCC

Sync level control pin.

1.6V (180mV) to 5V (380mV) 0V (287mV) preset.

40µA

AGND

– 6 –

CXA1592Q/R

Pin No.

27

28

Symbol Pin voltage Equivalent circuit Description

AVCC

1k

SETUP LEVEL

3.5V

140

27

80µA

AGND

Set up level control pin.

2.4V (0mV) to 5V (120mV)

Controls the signal suppress level during Black Fader. Controls the signal suppress level during White Fader and at the same time controls the set up level. Signal suppress control:

FADER SIG 0V

AVCC

1k

140

28

2V (100%) to 2.9V (0%)

20µA

AGND

Set up level control:

2V (0%) to 2.9V (100%) Black Fader/White Fader mode selection executed through Fader Mode pin.

29

30

31

FADER MODE

Y LEVEL

3.5V

3.4V

SHP OUT 3V

29

30

31

140

1k

200

600µA

40µA

140

1k

AVCC

20µA

AGND

AVCC

80µA

AGND

AVCC

AGND

Black Fader and White Fader mode select pin. Also conrols the final value (100%) of White Fader white level (set up level). 0V (Black Fader)

1.8V (100mV) to 5V (630mV) (White Fader)

Y signal level control pin.

1.6V (–3.5dB) to 5V (9dB)

Aperture signal output pin. When not in use, connection to VCC allows for 700µA of current saving.

– 7 –