ST CCA008V1 User Manual

Demonstration board for 2x1 W differential input stereo audio

Features

STEVAL-CCA008V1

amplifier based on the TS4998

Data Brief

■ Operating range from V

■ 1 W output power per channel

@V

=5 V,THD+N =1%, RL =8 Ω

CC

■ Ultra low standby consumption:10 nA typ.

■ 80 dB PSRR @ 217 Hz with grounded inputs

■ High SNR: 106 dB(A) typ.

■ Fast startup time: 45 ms typ.

■ Circuit free of Pop and click

■ Dedicated standby pin per channel

■ Lead-free QFN16 4x4mm package

= 2.7 V to 5.5 V

CC

Description

The demonstration board STEVAL-CCA008V1 is
made to evaluate the TS4998 that is designed for
top-class stereo audio applications. Thanks to its
compact and power-dissipation efficient QFN16
package with exposed pad, it suits a variety of
applications. With a BTL configuration, this audio
power amplifier is capable of delivering 1 W per
channel of continuous RMS output power into an
8 Ω load at 5 V.

STEVAL-CCA008V1

Each output channel (left and right) also has its
own external controlled standby mode pin to
reduce the supply current to less than 10 nA per
channel. The device also features an internal
thermal shutdown protection. The gain of each
channel can be configured by external gain
setting resistors.

February 2009 Rev 1 1/4

For further information contact your local STMicroelectronics sales office.

www.st.com

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Circuit schematic STEVAL-CCA008V1

1 Circuit schematic

Figure 1. Schematic

VCC

JP1

JP2

Cn1

Cn2
Cn3

Cn4

Cin1

330nF
Cin2

330nF

Cin3

330nF
Cin4

330nF

4
3
2
1

4
3
2
1

R1

24k

R2

24k

R3

24k

R4

24k

TS4998 - QFN16

TS4998

1

LI N-

2

LI N+

4

RIN-

3

RIN+

14

Bypass

1uF
Cb

LEFT

RIGHT

BIASSTBY

GND GND

6

5

Cn8

13

Vcc

12

STBYR

7

VCC

LOUT -

11

LOUT +

9

ROUT-

10

ROUT+

U1

1
2
3

Cn9

-

+

-

+

STBYL

8

VCC

1
2
3

Cs1

1uF

Cs2

100nF

Cn5

Cn6

Cn7

2/4