MSM7731-02 OKI [OKI electronic componets], MSM7731-02 Datasheet - Page 21

• Manufacturer Part Number: MSM7731-02
• Description: Dual Echo Canceler & Noise Canceler with Dual Codec for Hands-Free
• Manufacturer: OKI [OKI electronic componets]

Noise Canceler Characteristics
Measurement System Block Diagram
Echo Canceler Characteristics
Measurement System Block Diagram
1 Semiconductor
Noise Attenuation
Echo Attenuation
Cancelable Echo
Delay Time
Parameter
Parameter
White noise generator
White noise generator
Symbol
Symbol
T
T
T
N
E
Level meter
acoud
acoud
lined
res
res
L.P.F.
L.P.F.
5 kHz
5 kHz
White Noise, voice band
Acoustic
Line side (when CODEC or 16-bit
linear data interface is used)
Line side (µ-law PCM used)
Single mode
Dual mode (acoustic side)
Dual mode (line side)
Analog
Analog
Analog
Condition
Condition
Power supply voltage 3 V
CODEC input gain = 1
CODEC output gain = 1
Power supply voltage 3 V
CODEC input gain = 1
CODEC output gain = 1
AIN
RIN
Line or Acoustic
SOUT
MSM7731-02
MSM7731-02
NC
EC
ROUT
LOUT
SIN
Analog
Analog
Analog
(V
(V
Min.
Min.
13
DD
DD
—
—
—
—
= 2.7 to 3.6 V, Ta = –40 to +85°C)
= 2.7 to 3.6 V, Ta = –40 to +85°C)
Echo delay time
(echo return loss)
Level meter
Delay
E.R.L
ATT
Typ.
Typ.
T
17
35
30
—
—
—
D
59–T
Max.
Max.
FEDL7731-02-04
59
27
—
—
MSM7731-02
lined
Unit
Unit
mS
mS
mS
dB
dB
21/53