Datasheet

Pin description TDA7491LP
8/37 Doc ID 13541 Rev 5
2.2 Pin list
Table 2. Pin description list
Number Name Type Description
1 SUB_GND POWER Connect to the frame
2,3 OUTPB OUT Positive PWM output for right channel
4,5 PGNDB POWER Power stage ground for right channel
6,7 PVCCB POWER Power supply for right channel
8,9 OUTNB OUT Negative PWM output for right channel
10,11 OUTNA OUT Negative PWM output for left channel
12,13 PVCCA POWER Power supply for left channel
14,15 PGNDA POWER Power stage ground for left channel
16,17 OUTPA OUT Positive PWM output for left channel
18 PGND POWER Power stage ground
19 VDDPW OUT
3.3-V (nominal) regulator output referred to ground for power
stage
20 STBY INPUT Standby mode control
21 MUTE INPUT Mute mode control
22 INPA INPUT Positive differential input of left channel
23 INNA INPUT Negative differential input of left channel
24 ROSC OUT Master oscillator frequency-setting pin
25 SYNCLCK IN/OUT Clock in/out for external oscillator
26 VDDS OUT
3.3-V (nominal) regulator output referred to ground for signal
blocks
27 SGND POWER Signal ground
28 DIAG OUT Open-drain diagnostic output
29 SVR OUT Supply voltage rejection
30 GAIN0 INPUT Gain setting input 1
31 GAIN1 INPUT Gain setting input 2
32 INPB INPUT Positive differential input of right channel
33 INNB INPUT Negative differential input of right channel
34 VREF OUT Half VDDS (nominal) referred to ground
35 SVCC POWER Signal power supply
36 VSS OUT 3.3-V (nominal) regulator output referred to power supply
-EP -
Exposed pad for ground-plane heatsink, to be connected to
GND