TLS1233

VIDEO PREAMPLIFIER SYSTEM

SLVS126C – JULY 1995 – REVISED JUNE 1996

3

POST OFFICE BOX 655303

recommended operating conditions

MIN

NOM

MAX

UNIT

Supply voltage, VCC1 and VCC2

11

12

13

V

High-level input voltage range, CLAMP GATE, VIH

Clamp comparators off

2.4

5

V

Low-level input voltage range, CLAMP GATE, VIL

Clamp comparators on

0

0.8

V

Operating free-air temperature, TA

0

70

°C

electrical characteristics at 25

PARAMETER

ALTERNATE

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

ICC

Supply current

VCC1 + VCC2

84

94

mA

Vref

Video input reference voltage

Measure R/G/B video input

2.1

2.3

2.5

V

II

Contrast and R,G,B GAIN ADJUST

input current

Measure CONTRAST,

R/G/B GAIN ADJUST

– 0.5

-10

µA

IIL

Clamp gate low input current

CLAMP GATE = 0 V

– 0.5

– 2.4

µA

IIH

Clamp gate high input current

CLAMP GATE = 12 V

0.005

1

µA

Clamp capacitor charge current

IK(chg)

R,G,B CLAMP CAP = 0 V

1

mA

Clamp capacitor discharge current

IK(dschg)

R,G,B CLAMP CAP = 5 V

–1

mA

VOL

Low-level output voltage

R,G,B CLAMP CAP = 0 V

0.3

V

VOH

High-level output voltage

R,G,B CLAMP CAP = 5 V

7.8

V

VO(diff)

Output voltage difference

VO(diff)

Between any two channels

±0.5

±50

mV

operating characteristics at 25

PARAMETER

ALTERNATE

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

AV(max) Maximum voltage amplification

AVMAX

CONTRAST = 4 V,

VIPP = 700 mV

7.8

V/V

AV(mid)

Midrange voltage amplification

AVMID

CONTRAST = 2 V,

VIPP = 700 mV

2

V/V

Contrast voltage for minimum

amplification

VCONT-LOW

VI(PP) = 1 V,

See Note 3

1

V

Amplification match at AV(max)

AVmax(diff)

CONTRAST = 4 V,

See Note 4

±0.2

dB

Amplification match at AV(mid)

AVmid(diff)

CONTRAST = 2 V,

See Note 3

±0.2

dB

Amplification match at AV(low)

AVlow(diff)

CONTRAST = VCONT-LOW,

See Note 3 and 4

±0.2

dB

THD

Total harmonic distortion

CONTRAST = 1 V,

VIPP = 1 V

0.5

%

BW

Amplifier bandwidth

BW(–3 dB)

CONTRAST = 4 V,

See Notes 5 And 7

100

MHz

Crosstalk attenuation

a

CONTRAST = 4 V,

See Note 6

f = 10 kHz,

60

dB

Crosstalk attenuation

ax

CONTRAST = 4 V,

f = 10 MHz,

See Notes 6 or 7

40

dB

Pulse test for rise time

tr

CONTRAST = 4 V,

CLAMP(+) = 2 V,

3

ns

Pulse test for fall time

tf

VO(PP) = 4 V

()

See Notes 5 and 7

4

ns

NOTES:

3. Determine VCONT-LOW for –40 dB attenuation of output. Reference to AV(max).

4. Measure gain difference between any two amplifiers, VI(PP) = 1 V.

5. Adjust input frequency from 10 kHz (AV(max) reference level) to the – 3-dB corner frequency (f – 3 dB). VI(PP) = 700 mV.

6. VI(PP) = 700 mV at f = 10 kHz to any amplifier. Measure output levels of the other two undriven amplifiers relative to driven amplifier.

7. A special text fixture without a socket and a double-sided full-ground-plane PC board are required.