BA7726 データシートの表示（PDF） - ROHM Semiconductor
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BA7726 Datasheet PDF : 11 Pages
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Multimedia ICs
BA7726AS / BA7726AFS
•Electrical characteristics (unless otherwise noted, Ta = 25°C, Vcc = 9.0V)
Parameter
Symbol Min. Typ.
Supply current
ICC
5.5
8.4
〈LINE THROUGH〉 INPUT : LINE IN, OUTPUT : LINE OUT
Line through output level
VOLL
– 9.0 – 8.0
Max.
12.7
– 7.0
Line through output distortion
THDLL
—
0.026
0.2
Line through max. output level VOMLL + 7.8 + 10.0
—
Line through noise level
VONLL
— – 100 – 85
Interchannel crosstalk
CTLL
— – 85
—
Mute level
MT
— – 100 – 85
〈VOCAL CUT MODE〉 INPUT : LINE IN, OUTPUT : LINE OUT
Through mode output level
VOLLV – 1.0
0.0 + 1.0
Vocal suppression ratio 1
VOLL1
– 1.0
0.0 + 1.0
Vocal suppression ratio 2
VOLL2
— – 35 – 28
〈MIC THROUGH〉 INPUT : MIC AMP IN, OUTPUT : LINE OUT
Microphone through output level VOML – 9.9 – 8.4 – 6.9
Microphone through
equivalent input noise
VONML
— – 117 – 102
Microphone input crosstalk
CTML
— – 92 – 77
ALC level
VOAML + 5.1 + 6.6 + 8.1
〈COMPRESS〉 INPUT : MIC AMP IN, OUTPUT : CMP BF OUT
Compress output level
VOMC – 5.5 – 3.5 – 1.5
Compress characteristics
CMP
— + 5.2
—
〈EXPAND〉 INPUT : DLY BF IN, OUTPUT : LINE OUT
Expand output level
VODL
– 9.4 – 7.4
—
Expand characteristics
EXP
— + 19.4
—
Echo EVR attenuation ratio
∆VODL
— – 50 – 40
〈Loop〉 INPUT : DLY BF IN, OUTPUT : CMP BF OUT
Loop output level
VODC – 4.4 – 2.4
—
Loop EVR attenuation ratio
∆VODC
— – 29
—
∗1 Unless otherwise noted, mode settings are as follows.
MUTE (VMUTE = GND), STEREO (VNOVC = GND, VLSTR = OPEN, VLVFR = OPEN)
ECHO LEVEL = Max. (VECHO = VCC), LOOP GAIN = Max. (VLOOP = VCC)
∗ ∗ Signal frequency : 1kHz, 1 : B.W. = 0.4 ~ 30kHz, 2 : DIN AUDIO
∗2 All parameters conform to the Measurement circuit diagram.
Unit
mA No input
Conditions
dBV
%
dBV
dBV
dBV
dBV
VIN = – 20.0dBV
VIN = – 20.0dBV∗1
MIC OFF (VECHO = 0.1 × VCC)
THD = 1%∗1
No input, Rg = 1kΩ∗2
MIC OFF (VECHO = 0.1 × VCC)
VIN – 12dBV, Rg = 1kΩ∗2
MIC OFF (VECHO = 0.1 × VCC)
VIN = – 12dBV, Rg = 1kΩ∗2
MIC OFF (VECHO = 0.1 × VCC)
MUTE (VMUTE = H)
dBV
dB
dB
VIN = – 12dBV
VIN = – 12dBV (single ch. in.),VOCAL FADER
(VLSTR = H, VLVFR = OPEN, VNOVC = OPEN)
VIN = – 12dBV (dual ch.in.),VOCAL FADER
(VLSTR = H, VLVFR = OPEN, VNOVC = OPEN)
dBV
dBV
dBV
dBV
VIN = – 38dBV
Rg = 1kΩ∗2
VIN = – 30dBV∗2
MIC OFF (VECHO = 0.1 × VCC)
V28 = 2.9V
dBV VIN = – 38dBV
dB
VIN = – 43dBV → – 33dBV
Output level differential
dBV
dB
dB
VIN = – 4dBV
VIN = – 9dBV → + 1dBV, Output level differential
VIN = – 4dBV and when VIN = Vodl
ECHO LEVEL = Min. (VECHO = 0.2 × VCC)
dBV
dB
VIN = – 4dBV
VIN = – 4dBV and when VIN = Vodc
LOOP GAIN = Min. (VLOOP = 0.2 × VCC)
5
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