參數(shù)資料
型號： MSM7590L-01
廠商： OKI SEMICONDUCTOR CO., LTD.
元件分類： Codec
英文描述： Multi-Function ADPCM CODEC
中文描述： 多功能差分PcM編解碼器
文件頁數(shù)： 4/26頁
文件大?。?/td> 173K
代理商： MSM7590L-01
4/26
Semiconductor
MSM7590L-01
PIN AND FUNCTIONAL DESCRIPTIONS
AIN1+, AIN1–, AIN2, GSX1, GSX2
Transmit analog inputs and the output for transmit gain adjustment.
AIN1– (AIN2) connects to inverting input of the internal transmit amplifier. AIN1+ connects to
non-inverting input of the internal transmit amplifier. GSX1 (GSX2) connects to the internal
transmit amplifier output. Refer to Fig.1 for gain adjustment.
VFRO, AOUT+, AOUT–, PWI
Receive analog outputs and the output for receive gain adjustment.
VFRO is the receive filter output. AOUT+ and AOUT– are differential analog signal outputs
which can directly drive Z
L
= 350
W
+ 120 nF or a 1.2 k
W
load. Refer to Fig.1 for gain adjustment.
Transmit Gain: V
GSX2
/Vi
= (R2/R1)
￥
(R4/R3)
AIN1–
GSX1
R2
C1
to ENCODER
R1
from
DECODER
Differential
Analog
Output
Receive Gain: Vo/V
FRO
= 2
￥
(R6/R5)
Z
L
= 120 nF
+ 350
W
AIN2
GSX2
R4
C2
R3
AOUT–
PWI
R6
VFRO
R5
AOUT+
AIN1+
–1
–
+
–
+
–
+
C1
R1
R2
V
REF
SG
Differential
Sound Output
Z
L
= 120 nF
+ 350
W
SAO–
–1
SAO+
+1
SELECT
+
–
10
m
F
0.1
m
F
Differential
Analog Input
Vi
V
O
Figure 1 Analog Input/Output Interface
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