ml7037 Oki Semiconductor, ml7037 Datasheet - Page 29

• Manufacturer Part Number: ml7037
• Description: Ml7037-003 Dual Echo Canceler & Noise Canceler With Dual Codec For Hands-free
• Manufacturer: Oki Semiconductor

Not for Publication
Noise Canceller Characteristics
[ Measurement System Block Diagram ]
Echo Canceller Characteristics
Note *3 Only in dual echo canceller mode
[ Measurement System Block Diagram ]
OKI Semiconductor
White Noise Generator
Noise attenuation
Echo attenuation
Cancellable echo delay time
DVDD0,1=3.00V to 3.60V, AVDD=3.00V to 3.60V, DGND0,1=0.0V, AGND0,1=0.0V, Ta=-40°C to +85°C (otherwise specified)
DVDD0,1=3.00V to 3.60V, AVDD=3.00V to 3.60V, DGND0,1=0.0V, AGND0,1=0.0V, Ta=-40°C to +85°C (otherwise specified)
Parameter
Parameter
White Noise Generator
L.P.F
5kHz
Analog
Symbol
T
T
Figure 21 Measurements (Noise Attenuation)
E
Figure 22 Measurements (Echo Attenuation)
ACOUD
LINED
Symbol
RES
Power supply voltag e : 3.30V
CODEC Input Gain = 1
CODEC Output Gain = 1
Level Meter
N
AIN
RES
ML7037
L.P.F.
5kHz
Acoustic-side, Line-side *3
(Analog interface or 16bit Linear
PCM mode)
Line-side (µ-law PCM mode)
Acoustic-side
Line-side *3
NC
with white noise
for voice band
noise attenuation setting =
default
LVFRO
Analog
Analog
Condition
Power supply voltag e : 3.30V
CODEC Input Gain = 1
CODEC Output Gain = 1
Analog
Condition
Rin
Sout
Line or Acoustic
Echo Canceller
ML7037
Level Meter
Rout
Sin
Analog
Analog
Min.
Min.
(Echo Return Loss)
—
—
—
—
—
Echo Delay Time
Delay
A TT
E.R.L
PEDL7037-003-05Zz_Digest
Typ.
Typ.
35
30
13
—
—
Max.
Max.
ML7037-003
100
20
—
—
—
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Unit
Unit
ms
ms
dB
dB
dB