Sony CXD2492R Datasheet

Timing Generator for Frame Readout CCD Image Sensor

Description

The CXD2492R is a timing generator IC which generates the timing pulses for performing frame readout using the ICX252 CCD image sensor.

Features

• Base oscillation frequency 24 to 36MHz

• High-speed/low-speed shutter function

• Draft (sextuple speed)/AF (auto focus) drive

• Horizontal driver for CCD image sensor

• Vertical driver for CCD image sensor

Applications

Digital still cameras

Structure

Silicon gate CMOS IC

Applicable CCD Image Sensors

ICX252 (Type 1/1.8, 3240K pixels)

Pin Configuration

Absolute Maximum Ratings

• Supply voltage VDD VSS – 0.3 to +7.0 V

VL –10.0 to VSS V VH VL – 0.3 to +26.0 V

• Input voltage VI VSS – 0.3 to VDD + 0.3 V

• Output voltage VO1 VSS – 0.3 to VDD + 0.3 V

VO2 VL – 0.3 to VSS + 0.3 V VO3 VL – 0.3 to VH + 0.3 V

• Operating temperature Topr –20 to +75 °C

• Storage temperature Tstg –55 to +150 °C

Recommended Operating Conditions

• Supply voltage VDDb 3.0 to 5.5 V

VDDa, VDDc, VDDd

3.0 to 3.6 V VM 0.0 V VH 14.5 to 15.5 V VL –7.0 to –8.0 V

• Operating temperature Topr –20 to +75 °C

– 1 –

E99730-PS

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.

CXD2492R

48 pin LQFP (Plastic)

∗

Groups of pins enclosed in the figure indicate

sections for which power supply separation is possible.

1 2 3 4 5 6 7 8 9 10 11 12

13

14

15

16

17

18

19

20

21

22

23

24

2526272829

30

313233343536

37

38

39

40

41

42

43

44

45

46

47

48

H2

V

DD3

V

DD4

XSHP

XSHD

XRS

PBLK

CLPDM

V

SS4

OBCLP

ADCLK

V

SS5

CKO

CKI

OSCO

OSCI

V

DD5

MCKO

SSI

SCK

SEN

VD

HD

V

SS6

H1

V

SS3VSS2

RG

VDD2

SSGSL

V

DD1

WEN

ID

SNCSL

RST

VSS1

TEST2

SUB

V3B

VL

V3A

V1B

VH

V1A

V4

V2

VM

TEST1

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

– 2 –

CXD2492R

Block Diagram

35 34

39 44

43

41

5

4

24

23

22

20

19

2118171615

10

9811131214

28

27

26 25

30

V1B V2

V3A

V1A

WEN

ID

V

SS5

ADCLK

OBCLP

CLPDM

PBLK

VSS4

XRS

XSHD

XSHP

V

DD4

V

SS2

RG

V

DD2

V

SS3

H2

H1

V

DD3

VD

HD

7 29 1

VSS136VSS6

V

DD5VDD1

MCKO

CKO

CKI

OSCO

OSCI

Pulse Generator

2 37 48

TEST2

TEST1

RST

45

38

42

47

40

46

VL

VM

VH

SUB

V4

V3B

31 32 33

SEN

SCK

SSI

Register

V Driver

6

SSGSL

3

SNCSL

1/2

Selector

Latch

SSG

– 3 –

CXD2492R

Pin Description

GND Internal system reset input. High: Normal operation, Low: Reset control

Normally apply reset during power-on.

Schmitt trigger input/No protective diode on power supply side

Control input used to switch sync system.

High: CKI sync, Low: MCKO sync

With pull-down resistor Vertical direction line identification pulse output. Memory write timing pulse output. Internal SSG enable. High: Internal SSG valid, Low: External sync valid

With pull-down resistor

3.3V power supply. (Power supply for common logic block)

3.3V power supply. (Power supply for RG) CCD reset gate pulse output. GND GND CCD horizontal register clock output. CCD horizontal register clock output.

3.3 to 5.0V power supply. (Power supply for H1/H2)

3.3V power supply. (Power supply for CDS block) CCD precharge level sample-and-hold pulse output. CCD data level sample-and-hold pulse output. Sample-and-hold pulse output for analog/digital conversion phase alignment. Pulse output for horizontal and vertical blanking period pulse cleaning. CCD dummy signal clamp pulse output. GND CCD optical black signal clamp pulse output. Clock output for analog/digital conversion IC.

Logical phase adjustment possible using the serial interface data. GND Inverter output. Inverter input. Inverter output for oscillation. When not used, leave open or connect a capacitor. Inverter input for oscillation. When not used, fix low.

3.3V power supply. (Power supply for common logic block) System clock output for signal processing IC.

1

2

3

4 5

6 7

8

9 10 11 12 13 14 15 16 17 18 19 20 21 22

23 24

25 26 27 28 29 30

VSS1

RST

SNCSL

ID WEN

SSGSL VDD1

VDD2 RG VSS2 VSS3 H1 H2 VDD3 VDD4 XSHP XSHD XRS PBLK CLPDM VSS4 OBCLP

ADCLK VSS5

CKO CKI OSCO OSCI VDD5 MCKO

—

I

O O

I

— —

O — —

O

O — —

O

O —

O

O —

O

I

O

I

—

O

Pin No.

Symbol

I/O Description

– 4 –

CXD2492R

Serial interface data input for internal mode settings.

Schmitt trigger input/No protective diode on power supply side

Serial interface clock input for internal mode settings.

Schmitt trigger input/No protective diode on power supply side

Serial interface strobe input for internal mode settings.

Schmitt trigger input/No protective diode on power supply side Vertical sync signal input/output. Horizontal sync signal input/output. GND IC test pin 1; normally fixed to GND. With pull-down resistor GND (GND for vertical driver) CCD vertical register clock output. CCD vertical register clock output. CCD vertical register clock output.

15.0V power supply. (Power supply for vertical driver) CCD vertical register clock output. CCD vertical register clock output. –7.5V power supply. (Power supply for vertical driver) CCD vertical register clock output. CCD electronic shutter pulse output. IC test pin 2; normally fixed to GND. With pull-down resistor

31

32

33 34

35 36 37 38 39 40 41 42 43 44 45 46 47 48

SSI

SCK

SEN VD

HD VSS6 TEST1 VM V2 V4 V1A VH V1B V3A VL V3B SUB TEST2

I

I/O I/O

—

I

—

O O O

—

O O

—

O O

I

Pin No.

Symbol

I/O

Description

– 5 –

CXD2492R

Electrical Characteristics DC Characteristics (Within the recommended operating conditions)

VDD2 VDD3 VDD4 VDD1, VDD5

RST

SSI, SCK, SEN,

TEST1, TEST2

SNCSL, SSGSL

VD, HD

H1, H2

RG

XSHP, XSHD, XRS, PBLK, OBCLP, CLPDM, ADCLK

CKO

MCKO

V1A, V1B, V3A, V3B, V2, V4

SUB

VDDa VDDb VDDc VDDd Vt+ Vt– Vt+ Vt– VIH1 VIL1 VIH2 VIL2 VIH3 VIL3 VOH1 VOL1 VOH2 VOL2 VOH3 VOL3

VOH5 VOL5 VOH6 VOL6 IOL IOM1 IOM2 IOH IOSL IOSH

3.0

0.8VDDd

0.7VDDd

0.8VDDd

VDDd – 0.8

VDDb – 0.8

VDDa – 0.8

VDDd – 0.8

10.0

5.0

5.4

3.3

3.6

5.5

3.6

0.2VDDd

0.3VDDd

0.2VDDd

0.4

–5.0

–7.2

–4.0

V V V V V V V V V V V V V V V V V V V V

V V V

V mA mA mA mA mA mA

Feed current where IOH = –1.2mA Pull-in current where IOL = 2.4mA Feed current where IOH = –22.0mA Pull-in current where IOL = 14.4mA Feed current where IOH = –3.3mA Pull-in current where IOL = 2.4mA

Feed current where IOH = –6.9mA Pull-in current where IOL = 4.8mA Feed current where IOH = –3.3mA Pull-in current where IOL = 2.4mA V1A/B, V2, V3A/B, V4 = –8.25V V1A/B, V2, V3A/B, V4 = –0.25V V1A/B, V3A/B = 0.25V V1A/B, V3A/B = 14.75V SUB = –8.25V SUB = 14.75V

Supply voltage 1 Supply voltage 2 Supply voltage 3 Supply voltage 4

Input voltage 1

∗1

Input voltage 2

∗2

Input voltage 3

∗3

Input voltage 4

∗4

Input/output voltage

Output voltage 1

Output voltage 2

Output voltage 3

Output voltage 4

Output voltage 5

Output current 1

Output current 2

Item Pins

Symbol

Conditions Min. Typ. Max. Unit

∗1

This input pin is a schmitt trigger input and it does not have protective diode of the power supply side in the IC.

∗2

These input pins are schmitt trigger inputs.

∗3

These input pins are with pull-down resistor in the IC.

∗4

These input pins are with pull-down resistor in the IC and they do not have protective diode of the power supply side in the IC.

Note) The above table indicates the condition for 3.3V drive.

VOH4

VOL4

Feed current where IOH = –3.3mA

Pull-in current where IOL = 2.4mA

VDDc – 0.8

0.4VV

– 6 –

CXD2492R

Inverter I/O Characteristics for Oscillation (Within the recommended operating conditions)

Item

Logical Vth Input

voltage Output

voltage Feedback

resistor Oscillation

frequency

Pins

OSCI

OSCO

OSCI, OSCO

Symbol

LVth VIH VIL VOH VOL

RFB

f

Conditions

Feed current where IOH = –3.6mA Pull-in current where IOL = 2.4mA

VIN = VDDd or VSS

Min.

0.7VDDd

VDDd – 0.8

500k

20

Typ.

VDDd/2

2M

Max.

0.3VDDd

0.4 5M

50

Unit

V V V V V

Ω

MHz

Item

Logical Vth Input

voltage Input

amplitude

Pins

CKI

Symbol

LVth VIH VIL

VIN

Conditions

fmax 50MHz sine wave

Min.

0.7VDDd

0.3

Typ.

VDDd/2

Max.

0.3VDDd

Unit

V V V

Vp-p

Item

Rise time

Fall time

Output noise voltage

Symbol

TTLM TTMH TTLH TTML TTHM TTHL VCLH VCLL VCMH VCML

Conditions VL to VM VM to VH VL to VH VM to VL VH to VM VH to VL

Min.

200 200

30 200 200

30

Typ.

350 350

60 350 350

60

Max.

500 500

90 500 500

90

1.0

Unit

ns ns ns ns ns ns

V V V V

Inverter Input Characteristics for Base Oscillation Clock Duty Adjustment

(Within the recommended operating conditions)

Note) Input voltage is the input voltage characteristics for direct input from an external source. Input amplitude

is the input amplitude characteristics in the case of input through a capacitor.

Switching Characteristics (VH = 15.0V, VM = GND, VL = –7.5V)

Notes) 1. The MOS structure of this IC has a low tolerance for static electricity, so full care should be given for

measures to prevent electrostatic discharge.

2. For noise and latch-up countermeasures, be sure to connect a by-pass capacitor (0.1µF or more) between each power supply pin (VH, VL) and GND.

3. To protect the CCD image sensor, clamp the SUB pin output at VH before input to the CCD image sensor.

– 7 –

CXD2492R

Switching Waveforms

V1A (V1B, V3A, V3B)

V2 (V4)

SUB

TTMH TTHM

VH

VM

VL

VM

VL

VH

VL

90%

10%

90%

10%

TTLM

90%

10%

90%

10%

TTLH TTHL

90%90%

10% 10%

TTML

90%

10%

TTML

90%

10%

Waveform Noise

VCMH

VCML

VH

VL

VCLH

VCLL

– 8 –

CXD2492R

Measurement Circuit

1 2 3 4 5 6 7 8 9 10 11 12

13

14

15

16

17

18

19

20

21

22

23

24

2526272829

30

313233343536

37 38 39 40 41 42 43 44 45 46 47 48

VD

CKI

C6

C6 C6

C6 C6 C6 C6 C6

C5

C5C4

C3

CXD2492R

Serial interface data

HD

+3.3V

–7.5V

+15.0V

C2

C2 C2

C2

R1

R2

R1

R1 R1

C2

C1

C2

C1 3300pF C2 560pF C3 820pF C4 30pF C5 215pF C6 10pF R1 30Ω R2 10Ω

– 9 –

CXD2492R

AC Characteristics

AC characteristics between the serial interface clocks

SSI

0.2V

DDd

0.2VDDd

0.8VDDd

ts2

th1ts1

ts3

0.8V

DDd

0.8VDDd

SCK

SEN

Symbol

ts1 th1 ts2 ts3

Definition SSI setup time, activated by the rising edge of SCK SSI hold time, activated by the rising edge of SCK SCK setup time, activated by the rising edge of SEN SEN setup time, activated by the rising edge of SCK

Min. Typ. Max.

20 20 20 20

Unit

ns ns ns ns

Serial interface clock internal loading characteristics (1)

(Within the recommended operating conditions)

th1

Enlarged view

Example: During frame mode

0.2V

DDd

ts1

0.2V

DDd

V1A

VD

HD

V1A

SEN

0.8V

DDd

Symbol

ts1 th1

Definition SEN setup time, activated by the falling edge of HD SEN hold time, activated by the falling edge of HD

Min. Typ. Max.

0

102

Unit

ns µs

∗

Be sure to maintain a constantly high SEN logic level near the falling edge of the HD in the horizontal period during which V1A/B and V3A/B values take the ternary value and during that horizontal period.

(Within the recommended operating conditions)

– 10 –

CXD2492R

Serial interface clock output variation characteristics

Normally, the serial interface data is loaded to the CXD2492R at the timing shown in "Serial interface clock internal loading characteristics (1)" above. However, one exception to this is when the data such as STB is loaded to the CXD2492R and controlled at the rising edge of SEN. See "Description of Operation".

0.8VDDd

SEN

Output signal

tpdPULSE

Symbol

tpdPULSE

Definition Output signal delay, activated by the rising edge of SEN

Min. Typ. Max.

1005

Unit

ns

(Within the recommended operating conditions)

Serial interface clock internal loading characteristics (2)

th1

Enlarged view

0.2V

DDd

ts1

0.2V

DDd

VD

HD

VD

HD

SEN

0.8V

DDd

Example: During frame mode

Symbol

ts1 th1

Definition SEN setup time, activated by the falling edge of VD SEN hold time, activated by the falling edge of VD

Min. Typ. Max.

0

200

Unit

ns ns

∗

Be sure to maintain a constantly high SEN logic level near the falling edge of VD.

(Within the recommended operating conditions)

– 11 –

CXD2492R

RST

0.2VDDd tw1

0.8VDDd

VD, HD

MCKO

ts1

th1

0.2V

DDd

0.8VDDd

0.2VDDd

RST loading characteristics

Symbol

tw1

Definition

RST pulse width

Min. Typ. Max.35Unit

ns

(Within the recommended operating conditions)

VD and HD loading characteristics

Symbol

ts1 th1

Definition VD and HD setup time, activated by the rising edge of MCKO VD and HD hold time, activated by the rising edge of MCKO

Min. Typ. Max.

20

5

Unit

ns ns

MCKO load capacitance = 10pF

(Within the recommended operating conditions)

0.8VDDd

MCKO

WEN, ID

tpd1

WEN and ID load capacitance = 10pF

(Within the recommended operating conditions)

Symbol

tpd1

Definition

Time until the above outputs change after the rise of MCKO

Min. Typ. Max.

6020

Unit

ns

Output variation characteristics