BA7181FS datasheet(2/8 Pages) ROHM

2 / 8 page

Video ICs

BA7181FS

•Block diagram

(REC - OUT 1)

(REC - OUT 2)

DFF IN

DET FILTER

REC DCFB

PRE IN 1

GND 1

PRE IN 2

PB / EE / REC CTRL

REC + OUT

REC AGC FILTER

AT ENVE FB

GND 2

REC LEVEL ADJ

PB AGC OUT

PB AGC FILTER

AT ENVE PEAKING

H SYNC IN

PB RF OUT

AT ENVE OUT

REC IN

VCC

•Electrical characteristics (unless otherwise noted, Ta = 25°C, VCC= 5.0V and f = 4.0MHz)

Parameter

Symbol Min. Typ. Max. Unit

Conditions

Measurement

circuit

〈Playback system〉

Quiescent current

Voltage gain CH-1

Voltage gain CH-2

Voltage gain differential

Frequency characteristic

2nd harmonic distortion∗

3rd harmonic distortion∗

Maximum output level

Crosstalk

Iq (P)

—

Fig.1

GVP1

Fig.1

GVP2

Fig.1

∆GVP

—

Fig.1

∆GVf –7 – 3

Fig.1

2HDP

— – 45

—

dBc

Fig.1

3HDP

— – 45

—

dBc

Fig.1

VOMP

1.0

1.5

—

VP-P

Fig.1

CTP

— – 38 – 32

dBc

Fig.1

No signal

Pin 4 input = 0.3mVP-P, pin 1: L,

pin 14 output measurement

Pin 6 input = 0.3mVP-P, pin 1: H,

pin 14 output measurement

∆GVP= | GVP1—GVP2 |

Difference in pin 14 output level for f = 8.0 / 1.0MHz,

VIN = 0.3mVP-P

VIN = 0.3mVP-P, 8.0MHz spurious

VIN = 0.3mVP-P, 12.0MHz spurious

When pin 14 output 2nd harmonic distortion is –30dBc

Difference in pin 14 output level for pin 1: H / L

∗ Design reference values.

(Fig. 1 measurement circuit, pin 8: “H” )

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