MC145502P 查看數據表（PDF） - Motorola => Freescale
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MC145502P Datasheet PDF : 28 Pages
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R0
– 48 V
N=1
N=2
N=1
R0
10 kΩ
10 kΩ
VAG VDD
RxO RDD
+ Tx
RCE
TxI
RDC
– Tx
TDC
Mu/A TDD
PDI
TDE
VSS
VLS
MC145503
23a. Simplified Transformer Hybrid Using MC145503
R0
– 48 V
N=1
N=1
N = 2 R4
R3
R5
R6
R2
VAG
VDD
RxO RDD
+ Tx
RCE
R1
TxI
RDC
– Tx
TDC
R0 = R3 ø R4 ø (R2 + R1) ≅ R3 ø R4
AVout =
R0 ø R4 ø (R2 + R1)
R3 + R0 ø R4 ø (R2 + R1)
R0 ø R4
≅
R3 + R0 ø R4
AV in =
– R1
R2
Mu/A TDD
PDI
TDE
VSS
VLS
MC145503
NOTE: Hybrid Balance by R5 and R6 to equate the RxO signal gain at Txl through the
inverting and non–inverting signal paths.
23b. Universal Transformer Hybrid Using MC145503
Figure 23. Hybrid Interfaces to the MC145503 PCM Codec–Filter Mono–Circuit
MC145500•MC145501•MC145502•MC145503•MC145505
18
MOTOROLA
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