msm7718-01 Oki Semiconductor, msm7718-01 Datasheet - Page 18

• Manufacturer Part Number: msm7718-01
• Description: Echo Canceler With Adpcm Codec
• Manufacturer: Oki Semiconductor

¡ Semiconductor
AC Characteristics
*2. P-message weighted filter used
*3. PCMPCI input code: “11111111” (m-law)
*4. 0.320 Vrms=0 dBm0=–7.7 dBm
Note : All ADPCM coder and decoder characteristics fully comply with ITU-T Recommendations
Transmit Frequency Response
Receive Frequency Response
Transmit Signal to Distortion
Receive Signal to Distortion
Transmit Gain Tracking
Receive Gain Tracking
Idle Channel Noise
Absolute Signal Amplitude
Power Supply Noise
Rejection Ratio
G.726.
Parameter
Symbol
L
L
L
L
L
L
L
L
L
L
L
SD R1
SD R2
SD R3
SD R4
SD R5
GT R1
GT R2
GT R3
GT R4
GT R5
SD T1
SD T2
SD T3
SD T4
SD T5
GT T1
GT T2
GT T3
GT T4
GT T5
P
P
OSS
OSS
OSS
OSS
OSS
N
OSS
OSS
OSS
OSS
OSS
OSS
N
A
A
SRRT
SRRR
IDLT
IDLR
VR
VT
R1
R2
R3
R4
R5
T1
T2
T3
T4
T5
T6
Noise Freq.:
0 to 50 kHz
Freq.(Hz) level (dBm0) Others
3968.75
3968.75
0-3000
300-3k
1020
3300
3400
1020
3300
3400
1020
1020
1020
1020
1020
0-60
—
—
Condition
Noise Level:
50 mVpp
AIN=SG
(*3)
–30
–40
–45
–30
–40
–45
–10
–40
–50
–55
–10
–40
–50
–55
0
0
0
3
0
3
0
3
3
0
GSX2
VFRO
(*2)
(*2)
(*2)
(*2)
—
—
—
— —
—
(V
—
DD
= 2.7 to 3.6 V, Ta = –25 to +70°C)
–0.15
–0.15
–0.15
–0.15
0.285 0.32(*4) 0.359
0.285 0.32(*4) 0.359
Min.
–0.2
–0.2
–0.5
–1.2
–0.2
–0.2
–0.5
–1.2
25
13
13
35
35
35
28
23
35
35
35
28
23
—
—
30
30
0
0
Reference
Reference
Reference
Reference
Typ.
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
(–75.7)
(79.7)
Max.
+0.2
+0.8
+0.2
+0.8
+0.2
+0.2
+0.5
+1.2
+0.2
+0.2
+0.5
+1.2
–68
–72
0.8
0.8
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
MSM7718-01
(dBmp)
(dBmp)
dBm0p
dBm0p
Vrms
Vrms
Unit
dB
dB
dB
dB
dB
dB
dB
dB
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