BA7660FS datasheet(5/6 Pages) ROHM

5 / 6 page

Multimedia ICs

BA7660FS

Note 1: Measure the circuit current when no signal is present.

Note 2: Apply a sine wave of f = 1kHz to the input, and adjust the input

level so that the output distortion is 1%. At this time, set the out-

put voltage to the maximum output level of VOM [VP-P].

Note 3: Measure the output VO [VP-P] with a sine wave of f = 4.43MHz,

1VP-P applied to the input. Voltage gain GV is:

GV = 20 Log (VO / VIN) [dB]

Note 4: Measure the outputs VO7 and VO1 [VP-P] each with sine waves of

f = 7MHz, 1VP-P and f = 1MHz, 1VP-P applied to the input. Voltage

frequency GF is:

GF = 20 Log (VO7 / VO1) [dB]

Note 5: Measure the output VO [VP-P] with a sine wave of f = 4.43MHz,

1VP-P applied to the input. Interchannel crosstalk CT is:

CT = 20 Log (VO / VIN) [dB]

Note 6: Measure the output VO [VP-P] with a sine wave of f = 4.43MHz,

1VP-P applied to the input. The muting attenuation MT is:

MT = 20

∗ Log (VO / VIN) [dB]

•Measurement condition settings table

Item

Symbol

Measurement

method

Switch conditions

Circuit current

Maximum

output level

Voltage gain

Frequency

characteristics

Crosstalk between

channels

Muting attenuation

ICC

VOM1

VOM2

VOM3

GV1

GV2

GV3

GF1

GF2

GF3

CT1

CT2

CT3

CT4

CT5

CT6

MT1

MT2

MT3

OUTA

OUTB

OUTC

OUTA

OUTB

OUTC

OUTA

OUTB

OUTC

OUTA

→OUTB

OUTA

→OUTC

OUTB

→OUTA

OUTB

→OUTC

OUTC

→OUTA

OUTC

→OUTB

OUTA

OUTB

OUTC

Note 1

Note 2

Note 3

Note 4

Note 5

Note 6

SW1

SW2

SW4

SW7

SW16

∗ The muting switching level is substituted by carrying out the above measurement at High = 3.3V, Low = 1.2V.

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