STEVAL-CCA012V1
3 W filter-free class-D audio amplifier demonstration board with
6-12 dB fixed gain select based on the TS2007
Features
Data brief
■ Operating range from V
■ Dedicated standby mode active low for each
= 2.4 V to 5.5 V
CC
channel
■ Output power per channel: 1.4 W @ 5 V or 0.5
W @ 3.0 V into 8 Ω with 1% THD+N max
■ Output power per channel: 2.3 W @ 5 V or 0.75
W @ 3.0 V into 4 Ω with 1% THD+N max
■ Two fixed gain selects: 6 dB or 12 dB
■ Low current consumption
■ Efficiency: 88% (typ)
■ Signal-to-noise ratio: 90 dB (typ)
■ PSRR: 68 dB (typ) @ 217 Hz with 6 dB gain
■ PWM base frequency: 280 kHz
■ Low pop and click noise
■ Thermal shutdown protection
■ Output short-circuit protection
■ RoHS compliant
Description
STEVAL-CCA012V1
AM03155
or drive the gain select and standby control pin,
and to change the input configuration.
The STEVAL-CCA012V1 demonstration board is
based on the TS2007FC audio power class-D
amplifier, housed in a Flip-Chip package, which is
capable of driving up to 1.4 W into an 8 Ω load at
5 V. The device offers improved efficiency
compared to typical class-AB audio amplifiers.
The TS2007FC allows switching between two
different gains: 6 or 12 dB via a logic signal on the
GS pin. Pop and click reduction circuitry provides
low on/off switching noise while allowing the
device to start within 1 ms. An active low standby
function permits lower current consumption (down
to 1 µA typ). The TS2007FC also integrates
output short-circuit protection and thermal
shutdown protection.
The STEVAL-CCA012V demonstration board is
constructed on a two-layer PCB with easily
accessible connectors, allowing users to change
June 2009 Doc ID 15861 Rev 1 1/4
For further information contact your local STMicroelectronics sales office.
www.st.com
4
Circuit schematic STEVAL-CCA012V1
1 Circuit schematic
Figure 1. Schematic diagram
GND
GND
OUT-
OUT+
123
C3
OUT+
4
A3
OUT-
H
Bridge
Circuit
Protection
B3
PWM
Oscilla tor
JP2
CF7002ST1U
1
2
JP5
B2
VCC
C3
1uF
B1
Vcc
-
+
GS Vcc
A2C2
1
2
VCC
3
P1
IN -
C1
Gain
Select
IN +
A1
2
1
JP3
C1
C2
220nF
1
4
3
2
Standby Gnd
Control
Standby
1
2
VCC
3
P2
2
1
220nF
JP4
JP1
IN -
IN +
GND
GND
AM03156
2/4 Doc ID 15861 Rev 1
STEVAL-CCA012V1 Revision history
2 Revision history
Table 1. Document revision history
Date Revision Changes
17-Jun-2009 1 Initial release.
Doc ID 15861 Rev 1 3/4
STEVAL-CCA012V1
y
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4/4 Doc ID 15861 Rev 1
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