STEVAL-CCA008V1 STMicroelectronics, STEVAL-CCA008V1 Datasheet - Page 22

• Manufacturer Part Number: STEVAL-CCA008V1
• Description: BOARD EVAL BASED ON TS4998
• Manufacturer: STMicroelectronics

Specifications of STEVAL-CCA008V1

• Amplifier Type: Class AB
• Output Type: 2-Channel (Stereo)
• Max Output Power X Channels @ Load: 1W x 2 @ 8 Ohm
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Board Type: Fully Populated
• Utilized Ic / Part: TS4998
• Description/function: Audio Amplifiers
• Operating Supply Voltage: 2.7 V to 5.5 V
• Output Power: 1 W
• Product: Audio Modules
• Silicon Manufacturer: ST Micro
• Silicon Core Number: TS4998
• Kit Application Type: Amplifier
• Application Sub Type: Stereo Audio Power Amplifier
• Kit Contents: Board
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: TS4998
• Other names: 497-8259

Application information
4.5
22/33
Low frequency response
The input coupling capacitors block the DC part of the input signal at the amplifier inputs. In
the low frequency region, C
pass filter with a -3dB cut-off frequency.
with R
So, for a desired -3dB cut-off frequency we can calculate C
From
for some typical cases.
Figure 64. -3dB lower cut-off frequency vs. input capacitance
Figure
IN
expressed in Ω and C
64, you can easily establish the C
100
10
0.1
IN
Rin=12k
G~12dB
starts to have an effect. C
IN
F
expressed in F.
C
CL
IN
Ω
=
=
0.2
Input Capacitor Cin (
---------------------------------------------- - Hz
2
----------------------------------------------- - F ( )
2
Rin=24k
G~6dB
×
×
π
π
×
×
R
IN
1
R
1
IN
Ω
IN
value required for a -3 dB cut-off frequency
×
×
C
0.4
F
IN
CL
(
IN
Rin=6.2k
G~18dB
μ
F)
and R
)
IN
0.6
:
Tamb=25
IN
Ω
form a first-order high
0.8
°
C
1
TS4998