MAX13301 Datasheet, PDF (9/37 Pages) Maxim Integrated Products – 4-Channel, Automotive Class D Audio Amplifier Feedback After the Filter

4-Channel, Automotive Class D Audio Amplifier
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PVDD 1
FB2+ 2
FB2- 3
FB3+ 4
FB3- 5
CL0 6
OUT3+ 7
OUT3- 8
PGND 9
PGND 10
PGND 11
PGND 12
OUT2+ 13
OUT2- 14
MUTE_CL1 15
IN- 16
GND 17
V_DD 18
IN0+ 19
IN1+ 20
REF 21
IN2+ 22
IN3+ 23
PVDD 24
MAX13301
EPR
48 PVDD
47 CP
46 CHOLD
45 CM
44 VDD5
43 PGND
42 OUT1+
41 OUT1-
40 PGND
39 PGND
38 PGND
37 PGND
36 OUT0+
35 OUT0-
34 FLT_OT
33 FB0+
32 FB0-
31 FB1+
30 FB1-
29 SDA
28 SCL
27 EN
26 SYNC
25 PVDD
TSSOP
Pin Configuration
PIN
1, 24, 25, 48
2
3
NAME
PVDD
FB2+
FB2-
Pin Description
FUNCTION
Audio Output Power-Supply Input. Bypass each PVDD to its PGND pair locally with 0.1FF and 4.7FF
ceramic capacitors. Each PVDD/PGND pair consists of one PVDD and two PGNDs. The PVDD/
PGND pairs are 1 and 9-10, 48 and 39-40, 24 and 11-12, and 25 and 37-38. Bypassing PVDD
locally minimizes the area of di/dt loops. An additional 1000FF, low-ESR electrolytic capacitor
should be placed from 1 and 48 to PGND and 24 and 25 to PGND.
Output 2 Positive Feedback. Connect to the LC filter’s positive output through a 150I ±1% resistor.
Output 2 Negative Feedback. Connect to the LC filter’s negative output through a 150I ±1%
resistor.
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