tda2500 Tripath Technology Inc., tda2500 Datasheet - Page 6

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

Pin Description
6
10, 11
13, 14
15, 16
18, 29
31, 32
33, 34
17,30
20,27
21,26
22,25
9, 12
5, 6
7, 8
Pin
19
23
24
28
35
36
37
38
1
2
3
4
LO1COM, LO2COM
OCS1HN, OCS1HP
OCS2HN, OCS2HP
OCS1LP, OCS1LN
OCS2LN, OCS2LP
HO1COM, HO2COM
FDBKN1, FDBKN2
GNDKELVIN1,
OVERLOADB
GNDKELVIN2
OCR2, OCR1
BBM0, BBM1
HO1, HO2
LO1, LO2
Function
IN2, IN1
VN12
HMUTE
VHIGH
VNN
VPP
VLOW
AGND
MUTE
PGND
NC
V5
Analog ground. This should be the “star” point for all connections to analog
ground.
Normally logic high. Logic low signals onset of clipping. Pin output
impedance is approximately 100k:
5V power supply input.
Logic input. A logic high puts the amplifier in mute mode. Ground pin if not
used. Please refer to the section, Mute Control, in the Application Information.
Audio inputs. (Channels 2 & 1)
Break-before-make timing control to prevent shoot-through in the output
MOSFETs.
Output ground feedback (Channels 1 & 2)
Over-current threshold adjustment (Channels 2 & 1). These pins directly
access the internal over current, voltage comparators. The threshold for over
current detection is V
Over Current Sense inputs, Channel 1 low-side
Over Current Sense inputs, Channel 1 high-side
Kelvin connection to source of low-side transistor (Channel 1 & 2)
Switching feedback (Channels 1 & 2)
“Floating” supply input for the FET drive circuitry. This voltage must be stable
and referenced to VNN.
Low side gate drive output (Channel 1 & 2)
Kelvin connection to source of high-side transistor (Channel 1 & 2)
High side gate drive output (Channel 1 & 2)
Positive supply voltage input. Connect to positive power supply. Used for
power supply sensing.
Negative supply voltage input. Connect to positive power supply. Used for
power supply sensing.
Power ground. This should be connected to the “star” point for the power
(output) ground.
Over Current Sense inputs, Channel 2 low-side
Over Current Sense inputs, Channel 2 high-side
Logic Output. A logic high indicates both amplifiers are muted, due to the
mute pin state, or a “fault” such as an overcurrent, undervoltage, or
overvoltage condition.
Do not connect.
Positive supply voltage sense input. This pin is biased at 2.5V nominally
and left floating in typical applications. Typically, external resistors will be
connected to VHIGH to lower the supply voltage operation range. See the
Application Information for a detailed description on how to lower the supply
voltage range.
Negative supply voltage sense input. This pin is biased at 1.25V nominally
and left floating in typical applications. Typically, external resistors will be
connected to VLOW to lower the supply voltage operation range. See the
Application Information for a detailed description on how to lower the supply
voltage range.
TOC
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
, as specified in the Electrical Characteristics section.
Description
TDA2500 – KL/ Rev. 0.9/05.05