October 1992

6

Philips Semiconductors

Product specification

VHF linear push-pull power MOS transistor

BLF348

APPLICATION INFORMATION FOR CLASS-A OPERATION

RF performance in a linear amplifier (common source circuit class-A circuit).

Note

1. Three-tone test method (vision carrier

−8 dB, sound carrier −7 dB, sideband signal −16 dB), zero dB corresponds to

peak synchronization level.

Ruggedness in class-A operation

The BLF348 is capable of withstanding a load mismatch corresponding to VSWR = 20 through all phases under the

following conditions:

MODE OF OPERATION

(MHz)

(V)

(A)

(

°C)

(dB)

(note 1)

(W)

(dB)

class-A

224.25

28

2

× 4.6

70

−52

> 67

typ. 70

> 11

typ. 12.5

224.25

28

2

× 4.6

25

−52

typ. 75

typ. 13

224.25

28

2

× 4.6

70

−55

> 54

typ. 57

> 11

typ.12.5

224.25

28

2

× 4.6

25

−55

typ. 62

typ. 13