MC145484 Datasheet, PDF (19/26 Pages) Motorola, Inc – 5V PCM CODEC-FILTER

0.1 µF
–
AUDIO OUT ₊
+5V
0.1 µF
1 _{VAG Ref}
20 k
2 _RO–
20
V_AG
TI+ ¹⁹
10 kΩ
0.01 µF
10 kΩ ^{1.0 µF}
20 k
3 _PI
4 _PO–
5 _PO+
TI– ¹⁸
TG ¹⁷
Mu/A ¹⁶
10 kΩ
+5V
10 kΩ
1.0 µF
6 _VDD
7 _FSR
V_SS ¹⁵
FST ¹⁴
8 kHz
8 _DR
DT ¹³
PCM OUT
9 _BCLKR
BCLKT ¹²
2.048 MHz
10 _PDI
MCLK ¹¹
PCM IN
Figure 7. MC145484 Test Circuit — Signals Referenced to V_AG Pin
ANALOG IN
Y
AUDIO OUT
R_L ≥ 2 kΩ
AUDIO OUT
R_L ≥ 150 Ω
0.1 µF
20 k
68 µF
20 k
+
10 kΩ
+5V
0.1 µF
1 _{VAG Ref}
2 _RO–
3 _PI
4 _PO–
5 _PO+
6 _VDD
7 _FSR
8 _DR
9 _BCLKR
10 _PDI
20
V_AG
TI+ ¹⁹
TI– ¹⁸
TG ¹⁷
Mu/A ¹⁶
V_SS ¹⁵
FST ¹⁴
DT ¹³
BCLKT ¹²
MCLK ¹¹
10 kΩ
10 kΩ
+5V
0.01 µF
10 kΩ ^{1.0 µF}
10 kΩ
ANALOG IN
1.0 µF
Y
8 kHz
PCM OUT
2.048 MHz
PCM IN
Figure 8. MC145484 Test Circuit — Signals Referenced to V_SS
MOTOROLA
MC145484
19