Features
STEVAL-CCA011V1
Filter-free stereo 2x2.5 W Class-D audio power amplifier
demonstration board based on the TS2012FC
Data brief
■ Operating range from V
■ Dedicated standby mode active low for each
= 2.5 V to 5.5 V
CC
channel
■ Output power per channel: 1.15 W @5 V or
0.63 W @ 3.6 V into 8 Ω with 1% THD+N max
■ Output power per channel: 1.85 W @5 V into 4
Ω with 1% THD+N max
■ Output short-circuit protection
■ Four gain select settings: 6, 12, 18, 24 dB
■ Low current consumption
■ PSRR: 63 dB typ @ 217 Hz with 6 dB gain
■ Fast start-up phase: 8 ms
■ Thermal shutdown protection
■ RoHS compliant
Description
This demonstration board is based on TS2012FC
that is a fully differential Class-D stereo power
amplifier able to drive up to 1.15 W into an 8 Ω
load at 5 V per channel.
STEVAL-CCA011V1
It achieves better efficiency compared to typical
Class-AB audio amps.
The device has four different gain settings that
use two digital pins: G0 and G1. Pop and click
reduction circuitry provides low on/off switch noise
while allowing the device to start within 8 ms.
Two standby pins (active low) allow each channel
to be switched off independently.
The TS2012FC also integrates output shortcircuit protection and thermal shutdown protection
and it is available in a 16-bumps Flip-Chip
package.
June 2009 Doc ID 15789 Rev 1 1/6
For further information contact your local STMicroelectronics sales office.
www.st.com
6
Circuit schematics STEVAL-CCA011V1
1 Circuit schematics
Figure 1. Schematic diagram
VCC
VCC
U1
Lin+
A1
Lin-
B1
G0
C2
G1
B2
Rin+
D1
Rin-
C1
STBYL
B4
STBYR
B3
TS2012 - FC16
Vcc
Gain
Select
Gain
Select
P1 Vcc
1
2
Standby
Control
AVCC
D2
C3
Vcc
Oscillator
Protection
PWM
PWM
Circuit
Lin+
Lin-
GND
GND
JP5
123
4
JP1
S1
3
2
1
G0
S2
3
2
1
G1
123
4
JP2
Rin+
Rin-
GND
GND
JP6
JP7
JP8
1
C1
220nF
C2
220nF
1
1
C3
220nF
C4
220nF
1
2
LinP
2
2
2
LinN
RinP
RinN
2
S3
STBL
1
3
VCC VCC
G0
G1
STBL
STBR
2
S4
STBR
1
3
100nF
C5
C6
1uF
PVCC
H
Bridge
H
Bridge
PGNDAGND
Vcc
Vcc
A2
A3
Lout+
A4
Lout-
Rout+
D3
Rout-
D4
C4
Pgnd
JP3
1
2
3
4
Header 4
JP4
1
2
3
4
Header 4
Table 1. Component list for the demonstration board
Designation Quantity Description
C1, C2, C3, C4 4 220 nF/16 V, SMD ceramic capacitor, 0603
C5 1 100 nF/16 V, SMD ceramic capacitor, 0603
C6 1 1 µF/16 V, SMD ceramic capacitor, 0603
P1, JP5, JP6, JP7, JP8 5 2-pin header 2.54 mm pitch
S1, S2, S3, S4 4 3-pin header 2.54 mm pitch
2/6 Doc ID 15789 Rev 1
JP1, JP2, JP3, JP4 4 4-pin header 2.54 mm pitch
U1 1 TS2012EIJT
STEVAL-CCA011V1 Demonstration board layout
2 Demonstration board layout
The following figures depict the top view and layers of the demonstration board.
Figure 2. PCB top layer Figure 3. PCB middle layer 1
Figure 4. PCB middle layer 2 Figure 5. PCB bottom layer
Doc ID 15789 Rev 1 3/6
Demonstration board layout STEVAL-CCA011V1
Figure 6. Top view and dimensions of the demonstration board
4/6 Doc ID 15789 Rev 1
STEVAL-CCA011V1 Revision history
3 Revision history
Table 2. Document revision history
Date Revision Changes
03-Jun-2009 1 Initial release.
Doc ID 15789 Rev 1 5/6
STEVAL-CCA011V1
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6/6 Doc ID 15789 Rev 1
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