L2572

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

4 of 14

www.unisonic.com.tw

QW-R102-032.A

TEST CONFIGURATION

BASE BAND VIDEO 1V p–p

VIDEO GENERATOR

ROHDE &

SCHWARZ SGPF

TV SAT TEST TX

ROHDE &

SCHWARZ SFZ

RF CARRIER FREQ 479.5MHz

FM MODULATION 13.5MHz P–P

PRE–EMPHASISED VIDEO

TEST APPLICATION BOARD

See Fig. 1 for details

MONTFORD TEST OVEN

PRE EMPHASISED BASE BAND VIDEO

VIDEO AMPLIFIER/

DE EMPHASISED NETWORK

VIDEO ANALYSER

ROHDE & SCHWARZ UAF

DE EMPHASISED BASE BAND VIDEO 1V p–p

Using the above test configuration the video drive characteristics measurements were made. In the Electrical

Characteristics Table the maximum figures recorded coincide with extremes of supply voltage and high temperatures.

There’s no adjustment to the recorded figures has been made to compensate for the effects of temperature on the

external components of the application test board, in the varactor diodes particularly. Attention to temperature

compensation of the external circuitry will result in performance figures closer to the stated typical figures if operation

of the device at high ambient temperatures is envisaged.