STV5728 Ver la hoja de datos (PDF) - STMicroelectronics

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STV5728

4-HEAD VIDEO AND 2-HEADS HIFI AUDIO PLAYBACK AND RECORD AMPLIFIER FOR VCR

STMicroelectronics 

STV5728

ABSOLUTE MAXIMUM RATINGS

Symbol

VCC

Tj

Toper

Power Supply Voltage

Junction Temperature

Operating Temperature

Parameter

Value

Unit

6

V

150

oC

0, +70

oC

THERMAL DATA

Symbol

Rth (j-a)

Parameter

Junction-ambient Thermal Resistance

(IC solded on the PC board)

Max.

Value

75

Unit

oC/W

RECOMMENDED OPERATING CHARACTERISTICS

Symbol

VCC

VCCFM

CAGC

CCOM

CCOM1

RADJ

Parameter

Power Supply

FM HIFI Power Supply

AGC Time Constant

Decoupling Capacitor

Decoupling Capacitor

Record Current Adjustment Resistor

Min. Typ. Max. Unit

4.75

5

5.25

V

4.75

5

5.25

V

4.7

22

nF

4.7 470

nF

4.7 470

nF

15

22

33

kΩ

Figure 1 : FM Record Current Amplifier ; Record Current Adjustment Curve

70

60

Recording Level

50

40

30

20

10

20

30

RADJ Value (kΩ)

A certain ratio must be kept between RADJ and

RFMIN to insure maximum performances with an

average FM recording input voltage around

170mVPP. Some examples are given in the follow-

ing tables. If the average input voltage is higher (or

lower), the RFMRIN value must be increased (de-

creased) proportionnaly.

SET-UP

(1)

(2)

(3)

40

RADJ

15kΩ

22kΩ

33kΩ

RFMRIN

1kΩ

1.5kΩ

2kΩ

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