4

Video ICs

BA7180AS / BA7180AFS

Parameter

Symbol

Unit

Min.

Typ. Max.

〈Recording system〉

Quiescent current

Recording AGC level

AGC control sensitivity

REC amplifier frequency characteristic

2nd harmonic distortion

—

72

110

mA

27

30

33

—

0.3

1.5

dB

Pin 9 output level difference for pin 13

—

dB

—

– 45

– 38

dBc

—

– 50

– 40

dBc

—

– 50

– 40

dBc

4.0MHz

± 630kHz spurious, guaranteed design value.

Maximum output level

40

50

—

—dB

Pin 9 output level difference for load L: 8.2

~ 12

µH, guaranteed design value.

—

– 45

– 38

dBc

Pin 9 output level difference for pin 11: M / H.

AGC mode holding voltage

AGC mode holding voltage

2.7

—

V

Pin 17 DC voltage to maintain recording AGC operation

Pin 17 DC voltage to maintain recording AGC stopped

0

—

1.2

V

No signal

output measurement

3rd harmonic distortion

Cross modulation distortion

Recording current load

characteristic

Mute attenuation ratio

Conditions (BA7180AS)

Fig.2

Fig.2

Fig.2

Fig.2

Fig.2

Fig.2

Fig.2

Fig.2

Fig.2

Fig.2

Fig.2

Fig.2

guaranteed design value.

Pin 9 output level difference for f = 8.0 / 1.0MHz,

Note:

dBc: dB below carrier (used to express relative level from carrier reference for convenience sake)

Measurement

circuit

(Pin 11 in Fig. 2 mesurement circuit "L")

Parameter

Symbol

Unit

Typ.

Max.

ENVE output level

ENVE output level

1.8

2.3

2.8

V

Pin 15 output measurement when

Pin 15 output measurement when

3.35

3.6

3.85

V

Min.

Conditions (BA7180AS)