CXD2497R Ver la hoja de datos (PDF) - Sony Semiconductor

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Fabricante

CXD2497R

Timing Generator for Frame Readout CCD Image Sensor

Sony Semiconductor 

CXD2497R

Inverter I/O Characteristics for Oscillation

(Within the recommended operating conditions)

Item

Pins

Logical Vth OSCI

Input

voltage

OSCI

Output

voltage

Feedback

resistor

Oscillation

frequency

OSCO

OSCI,

OSCO

OSCI,

OSCO

Symbol

Conditions

LVth

VIH

VIL

VOH Feed current where IOH = –3.6mA

VOL

Pull-in current where IOL = 2.4mA

RFB VIN = VDDd or VSS

f

Min.

Typ. Max. Unit

VDDd/2

V

0.7VDDd

V

0.3VDDd V

VDDd – 0.8

V

0.4 V

500k

2M

5M Ω

20

50 MHz

Inverter Input Characteristics for Base Oscillation Clock Duty Adjustment

(Within the recommended operating conditions)

Item

Pins

Logical Vth

Input

voltage

CKI

Input

amplitude

Symbol

LVth

VIH

VIL

Conditions

VIN

fmax 50MHz sine wave

Min.

0.7VDDd

Typ. Max. Unit

VDDd/2

V

V

0.3VDDd V

0.3

Vp-p

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)

Item

Rise time

Fall time

Output noise voltage

Symbol

Conditions

TTLM VL to VM

TTMH VM to VH

TTLH VL to VH

TTML VM to VL

TTHM VH to VM

TTHL VH to VL

VCLH

VCLL

VCMH

VCML

Min.

Typ. Max. Unit

200

350

500 ns

200

350

500 ns

30

60

90 ns

200

350

500 ns

200

350

500 ns

30

60

90 ns

1.0 V

1.0 V

1.0 V

1.0 V

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.

–6–

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