LMH1981

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SNLS214H – APRIL 2006 – REVISED MARCH 2013

Electrical Characteristics

(1)

Unless otherwise specified, all limits are ensured for TA = 25°C, VCC = VCC1 = VCC2 = VCC3 = 3.3V, REXT = 10 kΩ 1%,

RL = 10 kΩ, CL < 10 pF.Boldface limits apply at the temperature extremes. See Figure 2.

Symbol

Parameter

Conditions

Min (2)

Typ (3)

Max (2)

Units

ICC

Supply Current

No input signal

VCC = 3.3V

9.5

11.5

mA

VCC = 5V

11

13.5

Video Input Specifications

VIN-SYNC

Input Sync Amplitude

Amplitude from negative sync tip to video

0.14

0.30

0.60

blanking level for SD/EDTV bi-level sync

(4) (5) (6)

VPP

Amplitude from negative to positive sync tips

0.30

0.60

1.20

for HDTV tri-level sync (4)(7)(6)

VIN-CLAMP

Input Sync Tip Clamp Level

0.7

V

VIN-SLICE

Input Sync Slice Level

Level between video blanking & sync tip for

50

%

SD/EDTV and between negative & positive

sync tips for HDTV

Logic Output Specifications (8)

VOL

Output Logic 0

See output load conditions

VCC = 3.3V

0.3

V

above

VCC = 5V

0.5

VOH

Output Logic 1

See output load conditions

VCC = 3.3V

3.0

V

above

VCC = 5V

4.5

TSYNC-LOCK

Sync Lock Time

Time for the output signals to be correct after

2

V

the video signal settles at VIN following a

periods

significant input change. See START-UP

TIME for more information

TVSOUT

Vertical Sync Output Pulse

See Figure 3, Figure 4, Figure 5, Figure 6,

3

H

Width

Figure 7, and Figure 8 for SDTV, EDTV &

periods

HDTV Vertical Interval Timing

(1)

Electrical Table values apply only for factory testing conditions at the temperature indicated. Factory testing conditions result in very

limited self-heating of the device such that TJ = TA. No ensured specification of parametric performance is indicated in the electrical

tables under conditions of internal self-heating where TJ > TA.

(2)

Limits are 100% production tested at 25°C. Limits over the operating temperature range are ensured through correlations using the

Statistical Quality Control (SQC) method.

(3)

Typical values represent the most likely parametric norm at the time of characterization. Actual typical values may vary over time and

will also depend on the application and configuration. The typical values are not tested and are not ensured on shipped production

material.

(4)

VIN-AMPL plus VIN-CLAMP should not exceed VCC.

(5)

Tested with 480I signal.

(6)

Maximum voltage offset between 2 consecutive input horizontal sync tips must be less than 25 mVPP.

(7)

Tested with 720P signal.

(8)

Outputs are negative-polarity logic signal, except for odd/even field and video format outputs.

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