tda2500 Tripath Technology Inc., tda2500 Datasheet - Page 9

• Manufacturer Part Number: tda2500
• Description: Stereo Class-t Digital Audio Amplifier Driver Using Digital Power Processing Dpp
• Manufacturer: Tripath Technology Inc.

R
L
C
C
R
R
R
R
9
O
Z
O
VB
VNN1
VNN2
VPP1
VPP2
Zobel resistor, which in conjunction with C
frequencies. The combination of R
under both no load conditions or with real world loads, including loudspeakers which
usually exhibit a rising impedance with increasing frequency. Depending on the
program material, the power rating of R
watts. If the system requires full power operation at 20kHz then the power rating for
R
Output inductor, which in conjunction with C
waveform into an audio signal. Forms a second order filter with a cutoff frequency
of
Output capacitor, which, in conjunction with L
waveform into an audio signal. Forms a second order low-pass filter with a cutoff
frequency of
a high quality film capacitor capable of sustaining the ripple current caused by the
switching outputs.
Supply decoupling for the power supply sensing pins. For optimum performance,
these components should be located close to the TDA2500 and returned to analog
ground.
Main over-voltage and under-voltage sense resistor for the negative supply (VNN).
Please refer to the Electrical Characteristics Section for the trip points as well as the
hysteresis band. Also, please refer to the Over / Under-voltage Protection section in
the Application Information for a detailed discussion of the internal circuit operation
and external component selection.
Secondary over-voltage and under-voltage sense resistor for the negative supply
(VNN). This resistor accounts for the internal V
resistor value should be three times that of R
voltage Protection section in the Application Information for a detailed discussion of
the internal circuit operation and external component selection.
Main over-voltage and under-voltage sense resistor for the positive supply (VPP).
Please refer to the Electrical Characteristics Section for the trip points as well as the
hysteresis band. Also, please refer to the Over / Under-voltage Protection section in
the Application Information for a detailed discussion of the internal circuit operation
and external component selection.
Secondary over-voltage and under-voltage sense resistor for the positive supply
(VPP). This resistor accounts for the internal V
resistor value should be equal to that of R
voltage Protection section in the Application Information for a detailed discussion of
the internal circuit operation and external component selection.
Z
f
will likely need to be increased.
C
1
2 (
S
f
C
L
O
C
1
O
2 (
)
S
and a quality factor of
L
O
C
O
)
and a quality factor of
Z
and C
Z
may need to be adjusted. Typically 10
VPP1
Z
T r i p a t h T e c h n o l o g y , I n c . - T e c h n i c a l I n f o r m a t i o n
Z
, terminates the output filter at high
O
minimizes peaking of the output filter
VNN1
, demodulates (filters) the switching
O
. Please refer to the Over / Under-
Q
, demodulates (filters) the switching
PPSENSE
NNSENSE
. Please refer to the Over / Under-
R
L
C
bias of 2.5V. Nominal
bias of 1.25V. Nominal
O
Q
TDA2500 – KL/ Rev. 0.9/05.05
L
R
O
C
L
C
O
O
.
L
O
C
O
. Use