參數(shù)資料
型號(hào): MC145505DW
廠商: MOTOROLA INC
元件分類: 編解碼器
英文描述: PCM Codec-Filter Mono-Circuit
中文描述: A/MU-LAW, PCM CODEC, PDSO16
封裝: PLASTIC, SOP-16
文件頁數(shù): 19/28頁
文件大小: 539K
代理商: MC145505DW
MC145500
MC145501
MC145502
MC145503
MC145505
MOTOROLA
19
Figure 24. Hybrid Interfaces to the MC145502 PCM Codec–Filter Mono–Circuit
R1
R3
R4
R6
2
×
R2
R5 + R6
1 –
1 +
=
R0 = 600
R0 = 900
N = 1
N = 1
N = 2
R0
R5
R4
R3
R6
R0
R2
R1
– 48
VSS
+ Vref
VAG
RxO
RxG
RxO
+ Tx
TxI
– Tx
Mu/A
PDI
VSS
VLS
MSI
TDE
TDD
CCI
TDC
RDC
RCE
RDD
VDD
RSI
MC145502
NOTE: Balance by R5 and R6 to equate the Txl gains through the inverting
and non–inverting input signal paths, respectively, is given by:
24a. Universal Transformer Hybrid Using MC145502
Tx Gain = R1/R2
Rx Gain = 1 + R3/R4
R5, R6
10 k
Adjust Rx Gain with R3
Adjust Tx Gain with R1
R1
R2
R3
R4
R5
R5 + R6
R0
10 k
24b. Single–Ended Hybrid Using MC145502
+ Vref
VAG
RxO
RxG
RxO
+ Tx
TxI
– Tx
Mu/A
PDI
VSS
VLS
MSI
TDE
TDD
CCI
TDC
RDC
RCE
RDD
VDD
RSI
MC145502
N = 1
N = 1
– 48
20 k
N = 2
20 k
10 k
VSS
R0 = 600
R0 = 900
R0
T
R
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