BA7657S_ 查看數據表（PDF） - ROHM Semiconductor

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BA7657S_

Input selector switch for high definition displays

ROHM Semiconductor 

Multimedia ICs

BA7657F / BA7657S

•Guaranteed design parameters (unless otherwise noted, Ta = 25°C, VCC = 5.0V)

Parameter

Symbol Min. Typ. Max. Unit

Conditions

Measurement circuit

〈Analog switch unit〉

Input pin crosstalk 2

CTI2

— – 30 – 15

dB f = 230MHz, VIN = 1VP-P

Fig.2

Block crosstalk 2

CTB2

— – 30 – 15

dB f = 230MHz, VIN = 1VP-P

Fig.2

Frequency characteristic deviation Gf

–6 –3 –1

dB f = 1MHz / 230MHz, VIN = 1VP-P

Fig.2

Input pin frequency characteristic deviation ∆GfI – 1

0 +1

dB f = 1MHz / 100MHz, VIN = 1VP-P

Fig.2

Block frequency characteristic deviation ∆GfB – 1

0 +1

dB f = 1MHz / 100MHz, VIN = 1VP-P

Fig.2

〈SYNC separation unit〉

SYNC separation frequency

fH-R 200 —

SYNC separation pulse width 1 pwH1 3.0 —

SYNC separation pulse width 2 pwH2 0.5 —

SYNC separation pulse width 3 pwH3 0.3 —

SYNC separation level 1

VS1 300 —

SYNC separation level 2

VS2 100 —

SYNC separation level 3

VS3

60 —

— kHz input waveform∗1

—

µs input waveform∗2 fH = 20kHz

—

µs input waveform∗2 fH = 100kHz

—

µs input waveform∗2 fH = 200kHz

—

µs input waveform∗3 fH = 20kHz

—

µs input waveform∗3 fH = 100kHz

—

µs input waveform∗3 fH = 200kHz

Fig.3

Fig.3

Fig.3

Fig.3

Fig.3

Fig.3

Fig.3

Input waveform (input to pin 3 or 9 [see illustration to right], Ro = 240Ω)

∗1 Vs and pwH = variable. Vs and pwH are interrelated. Refer to characteristics graph.

∗2 Vs = 130mV, pwH = variable

∗3 pwH = 1µs, Vs = variable

Duration of horizontal synchronization signal

Duty 25%

(1H)

Vr = 0.7V

Vs = 130mV

pwH = 1µs

6

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