LM1237 datasheet(2/42 Pages) NSC

2 / 42 page

Absolute Maximum Ratings (Notes 1, 3)

If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

Supply Voltage, Pins 15 and 19

6.0V

Peak Video DC Output Source Current

(Any One Amp) Pins 18, 19 or 20

1.5 mA

Voltage at Any

Input Pin (V

IN)

CC +0.5 > VIN > −0.5V

Video Inputs (pk-pk)

0.0 < V

IN < 1.2V

Thermal Resistance to Ambient (

JA)

51˚C/W

Power Dissipation (P

(Above 25˚C Derate Based

JA and TJ)

2.4W

Thermal Resistance to case (

JC)

32˚C/W

Junction Temperature (T

150˚C

ESD Susceptibility (Note 4)

3.5 kV

ESD Machine Model (Note 13)

350V

Storage Temperature

−65˚C to +150˚C

Lead Temperature (Soldering, 10 sec.)

265˚C

Operating Ratings (Note 2)

Temperature Range

0˚C to +70˚C

Supply Voltage V

4.75V < V

CC < 5.25V

Video Inputs (pk-pk)

0.0V < V

IN < 1.0V

Video Signal Electrical Characteristics

Unless otherwise noted: T

A = 25˚C, VCC = +5.0V, VIN = 0.70 VP-P,VABL =VCC,CL = 8 pF, Video Outputs = 2.0 VP-P. Setting

numbers refer to the definitions in Table 1. See Note 7 for Min and Max parameters and Note 6 for Typicals.

Symbol

Parameter

Conditions

Min

Typ

Max

Units

Supply Current

Test Setting 1, both supplies, no

output loading. See Note 8.

170

245

S-PS

Supply Current, Power Save Mode

Test Setting 1, both supplies, no

output loading. See Note 8.

O BLK

Active Video Black Level Output

Voltage

Test Setting 4, no AC input signal,

DC offset (register 0x8438 set to

0xd5).

1.2

VDC

O BLK STEP

Active Video Black Level Step Size

Test Setting 4, no AC input signal.

100

mVDC

O Max

Maximum Video Output Voltage

Test Setting 3, Video in = 0.70 V

P-P

4.0

4.4

Linearity Error

Test Setting 4, staircase input

signal (see Note 9).

Video Rise Time

Note 5, 10% to 90%, Test Setting

4, AC input signal.

3.1

Rising Edge Overshoot

Note 5, Test Setting 4, AC input

signal.

Video Fall Time

Note 5, 90% to 10%, Test Setting

4, AC input signal.

2.9

Falling Edge Overshoot

Note 5, Test Setting 4, AC input

signal.

Channel bandwidth (−3 dB)

Note 5, Test Setting 4, AC input

signal.

150

MHz

SEP 10 kHz

Video Amplifier 10 kHz Isolation

Note 14, Test Setting 8.

−60

SEP 10 MHz

Video Amplifier 10 MHz Isolation

Note 14, Test Setting 8.

−50

V Max

Maximum Voltage Gain

Test Setting 8, AC input signal.

3.8

4.2

V/V

V C-50%

Contrast Attenuation @ 50%

Test Setting 5, AC input signal.

−5.2

V Min/AV Max

Maximum Contrast Attenuation in

Test Setting 2, AC input signal.

−20

V G-50%

Gain Attenuation @ 50%

Test Setting 6, AC input signal.

−3.6

V G-Min

Maximum Gain Attenuation

Test Setting 7, AC input signal.

−10

V Match

Maximum Gain Match between

channels

Test Setting 3, AC input signal.

±0.5

V Track

Gain Change between channels

Tracking when changing from Test

Setting 8 to Test Setting 5. See

Note 11.

±0.5

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