STV5742 查看數據表（PDF） - STMicroelectronics

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STV5742

2-HEAD PLAYBACK AND RECORD AMPLIFIER FOR VCR

STMicroelectronics 

STV5742

ELECTRICAL CHARACTERISTICS (Tamb = 25oC, unless otherwise specified)

Record Mode (VCC = 5V, Recadj = 12kΩ, SWR = 5V, CAGCREC = 470pF, RRCY = 2.2kΩ,

RRCC = 8.2kΩ, Load 10µH//1kΩ for each simulated head) (continued)

Symbol

Parameter

Test Conditions

Min. Typ. Max. Unit

SWITCHING LEVELS (continued)

VSWRCL SWRC Input Threshold

ISWRCH SWRC Input Leakage Current

ISWRCL

tON

t1

SWRC Input Leakage Current

Delay

Delay from playback to record :

Signal disappears on Pin PBOUT

t2

t3

t4

VCSYH

VCSYL

Delay from record to playback :

Signal appears on Pin PBOUT

Delay from playback to record :

Signal appears on Pin IOUT

Delay from record to playback :

Signal disappears on Pin IOUT

CSYN Input Threshold

CSYN Input Threshold

ICSYH Leakage Current

ICSYL Leakage Current

Selects playback mode, 5 to 0V

5V at SWRC input

0V at SWRC input

Signal appears on PBOUT

22nF between Hi/Vi

22nF between Hi/Vi

Sampling on (I = -25µA)

Sampling off (I = 25µA)

Sampling on

Sampling off

3.1 3.3 3.8 V

2 5 8 mA

-20 0 20 µA

3

ms

1

µs

5

ms

25

µs

7

µs

2.2 2.5 2.8 V

2.2 2.5 2.8 V

-10 µA

10

µA

INTERNAL SCHEMATICS

Figure 1

Figure 2

IOUT 1

Figure 3

7Ω

50kΩ

VCC

VCC

V2 3

VCC

VCC

V1 2

2.7kΩ

Figure 4

VCC

C1/C2

Pins 4/8

1kΩ

4/7

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