Frequency (Hz)
THD
+N
(%)
0.0001
0.001
0.01
0.1
1
10
20
200
2000
20000
D017
1 W
50 W
Power (W)
THD
+N
(%)
0.01
0.1
1
10
100 200
0.001
0.01
0.1
1
10
D008
Frequency (%)
THD
+N
(%)
0.0001
0.001
0.01
0.1
1
10
20
200
2000
20000
D014
1 W
50 W
Power (W)
THD
+N
(%)
0.01
0.1
1
10
100 200
0.001
0.01
0.1
1
10
D005
Frequency (Hz)
THD
+N
(%)
0.0001
0.001
0.01
0.1
1
10
20
200
2000
20000
D011
1 W
50 W
Power (W)
THD
+N
(%)
0.01
0.1
1
10
100 200
0.001
0.01
0.1
1
10
D002
D002
Setup By Mode
8
SLAU751 – November 2017
Copyright © 2017, Texas Instruments Incorporated
TPA3251 Evaluation Module
Figure 10. AIB Input: THD+N vs Frequency
Figure 11. AIB Input: THD+N vs Power
Figure 12. Molex Input: THD+N vs Frequency
Figure 13. Molex Input: THD+N vs Power
Figure 14. RCA Input: THD+N vs Frequency
Figure 15. RCA Input: THD+N vs Power
2.4
SE Mode (Four-Speaker Output)
1. Set J6 to H and J5 to H.
2. Remove jumpers J22, J23, J24, and J25.
3. Connect the positive side of the load to the
OUTA (
J9-
RED)
terminal and the negative side of the load
to the
GND
(J11) terminal.
4. Connect the positive side of the load to the
OUTB (
J9-
BLACK)
terminal and the negative side of the
load to the
GND
(J11) terminal.
5. Connect the positive side of the load to the
OUTC (
J2-
RED)
terminal and the negative side of the load
to the
GND
(J20) terminal.
6. Connect the positive side of the load to the
OUTD (
J2-
BLACK)
terminal and the negative side of the
load to the
GND
(J20) terminal.
7. Set both J4 and J19 jumpers position to DIFF.
8. Input configuration:
a. Differential inputs: Set J26, J27, J34, and J35 to RCA.
i.
Connect the male RCA jack to the female RCA jack input A/AB
(
J3-
RED)
for the
OUTA
speaker.
