ST AN2134 APPLICATION NOTE
AN2134
In-
Stdby
In+
Out-
Out+
Vcc
4
5
1
2
10
38
3
6
GND
Internal
Bias
PWM
Output
Bridge
H
Oscillator
150k
150k
+
-
300k
U1
TS4962 Flip-Chip to DIP Adapter
GND
Vcc
R1
150k
R2
150k
C2
100nF
C3
100nF
Cn3 Cn6
Cn2
1
2
3
Cn1 + J1
GND GND
Vcc Vcc
+
C1
2.2uF/10V
GND
Cn4 + J2
Cn5 + J3
Positive Output
Negative Output
Positive Input
Negative input
Application note
TS4962M using the mono class D demonstration board
Introduction
The mono class D demo board STEVAL-CCA001V1 is designed for the TS4962M class D
audio amplifier. The TS4962M device, in a Flip-Chip package, is mounted on an adapter
board with DIP connectors (see Section 6) which is, in turn, mounted on the demonstration
board. Figure 1 shows the schematic diagram of the demonstration board, including the
Flip-Chip to DIP adapter.
Figure 1. Schematic diagram of mono class D demonstration board
www.st.com
March 2012 Doc ID 11283 Rev 5 1/11
Contents AN2134
Contents
1 About the TS4962M . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2 Description of the demonstration board . . . . . . . . . . . . . . . . . . . . . . . . . 5
3 Demonstration board connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4 Demonstration board layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5 Configuring the demonstration board characteristics . . . . . . . . . . . . . 7
5.1 Differential gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5.2 Input configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6 Flip-Chip to DIP adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
7 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2/11 Doc ID 11283 Rev 5
AN2134 List of figures
List of figures
Figure 1. Schematic diagram of mono class D demonstration board . . . . . . . . . . . . . . . . . . . . . . . . . 1
Figure 2. Mono class D demonstration board - top view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 3. PCB bottom layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 4. PCB top layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 5. Schematic diagram of the Flip-Chip to DIP adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 6. Adapter top view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Doc ID 11283 Rev 5 3/11
About the TS4962M AN2134
1 About the TS4962M
●
Low voltage class D differential audio power amplifier with standby mode
●
Operating range from VCC=2.4 V to 5.5 V
●
2.3 W output power @ VCC=5 V, THD=1%, F=1 kHz, with 4 Ω load
●
1.4 W output power @ VCC=5 V, THD=1%, F=1 kHz, with 8 Ω load
●
Ultra low power consumption in standby mode (10 nA)
●
63 dB PSRR @ 217 Hz in grounded mode (Av=2 V/V)
●
Low pop and click noise
●
Fast startup time 5 ms
●
Module gain set at 2 V/V
●
Thermal and short-circuit protection.
4/11 Doc ID 11283 Rev 5
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