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MSM7728 Datasheet(PDF) 12 Page - OKI electronic componets

Part # MSM7728
Description  Single Rail Linear CODEC
PDF  23 Pages
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Manufacturer  OKI [OKI electronic componets]
Direct Link  http://www.oki.com
Logo OKI - OKI electronic componets

MSM7728 Datasheet(HTML) 12 Page - OKI electronic componets

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¡ Semiconductor
MSM7728
12/23
AC Characteristics (Continued)
*1 Psophometric filter is used.
*2 AVT is the input level to output 0dBm0 pattern. VOL1 0dB setting.
AVSPK is the level to be output from SPKP pin when 0dBm0 pattern is input.
AVEAR is the level to be output from EAR pin when 0dBm0 pattern is input.
*3 VOL2 0dB setting
*4 The minimum value of group delay distortion is referenced.
Condition
(Fs = 8 kHz, VDD = 2.5 V to 3.6 V, Ta = –30°C to +85°C)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Level
(dBm0)
Freq.
(Hz)
3
–10
–40
–50
–55
Transmit Gain Tracking
(Expected Value)
GT T1
–0.3
+0.01
+0.3
GT T2
Reference value
GT T3
1020
–0.3
0.0
+0.3
dB
GT T4
–0.6
–0.03
+0.6
GT T5
–1.2
+0.15
+1.2
Receive Gain Tracking
(Expected Value)
GT R1
–0.3
–0.06
+0.3
GT R2
Reference value
GT R3
1020
–0.3
–0.02
+0.3
dB
GT R4
–0.6
–0.02
+0.6
GT R5
–1.2
–0.27
+1.2
3
–10
–40
–50
–55
3
–10
–40
–50
–55
Overall Gain Tracking
GT 1
–0.4
+0.01
+0.4
GT 2
Reference value
GT 3
1020
–0.4
0.0
+0.4
dB
GT 4
–1.0
–0.03
+1.0
GT 5
–1.5
+0.15
+1.5
Nidle T
—
—
–72
–68
dBmOp
NidleR
—
–76
Absolute Delay
AV Tt
–0.2
—
+0.2
AV Rt
–0.2
—
+0.2
Td
1020
—
—
0.6
ms
0
A to A
BCLK
= 128 kHz
Transmit Group Delay
tGD T1
—
—
0.325
tGD T2
—
—
0.175
0ms
*4
—
tGD T3
—
0.325
Receive Group Delay
—
0.00
0.125
ms
0
—
0.12
0.325
—
–74
Transmit Idle Channel Noise
(Expected Value)
—
—
AIN: no signal
*1
dB
dB
VDD = 2.5
to 3.6 V
Ta = –30
to +85°C
Output Level
(Deviation of Temperature and Power)
500
600 to 2600
2800
Crosstalk Attenuation
CR T
7585—
CR R
80
1020
dB
0
TRANS Æ RECV
RECV Æ TRANS
tGD R1
tGD R2
2800
*4
70
—
Receive Idle Channel Noise
(Expected Value)
500 to 2600
AVSPK
1020
0.275
0.245
0.309
0
Output Level
(Initial value)
AV T
0.350
0.312
0.393
AVEAR
MAO-PCMOUT
PCMIN-SPKP
PCMIN-EAR
Vrms
*3
*3
Analog to
Analog
*2



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