BA7181FS データシートの表示（PDF） - ROHM Semiconductor

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BA7181FS

2-channel PRE / REC amplifier with auto-tracking interface

ROHM Semiconductor 

Video ICs

•Block diagram

DFF IN

DET FILTER

REC DCFB

PRE IN 1

(REC - OUT 1)

GND 1

PRE IN 2

(REC - OUT 2)

REC + OUT

PB / EE / REC CTRL

REC AGC FILTER

AT ENVE FB

BA7181FS

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

〈Playback system〉 (Fig. 1 measurement circuit, pin 8: “H” )

Quiescent current

Iq (P) — 18 45 mA No signal

Conditions

Measurement

circuit

Fig.1

Voltage gain CH-1

GVP1

54

57

60

dB

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

pin 14 output measurement

Fig.1

Voltage gain CH-2

GVP2

54

57

60

dB

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

pin 14 output measurement

Fig.1

Voltage gain differential ∆GVP — 0 1 dB ∆GVP= | GVP1—GVP2 |

Fig.1

Frequency characteristic ∆GVf – 7 – 3

2nd harmonic distortion∗ 2HDP — – 45

3rd harmonic distortion∗ 3HDP — – 45

0

dB

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

VIN = 0.3mVP-P

— dBc VIN = 0.3mVP-P, 8.0MHz spurious

— dBc VIN = 0.3mVP-P, 12.0MHz spurious

Fig.1

Fig.1

Fig.1

Maximum output level VOMP 1.0 1.5 — VP-P When pin 14 output 2nd harmonic distortion is –30dBc

Fig.1

Crosstalk

CTP — – 38 – 32 dBc Difference in pin 14 output level for pin 1: H / L

Fig.1

∗ Design reference values.

2

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