TDA1400 Tripath Technology, TDA1400 Datasheet - Page 6

• Manufacturer Part Number: TDA1400
• Description: MONO CLASS-T DIGITAL AUDIO AMPLIFIER DRIVER
• Manufacturer: Tripath Technology

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12,14,16,
18,19,21,
Pin Description
6
13, 24
28, 29
41, 42
43, 44
23, 26
31,37,
39, 48
6, 32
9, 10
Pin
11
15
17
20
22
25
27
30
33
34
35
36
38
40
45
46
47
1
2
3
4
5
7
8
OAOUT_AMP
OAOUT_AUX
OCSP_NEG,
OCSN_POS,
OCSN_NEG
OCSP_POS
VNNSENSE
VPPSENSE
GATEOFF
FBK_NEG
FBK_POS
INV_AMP
Function
INV_AUX
BIASCAP
BBMSET
HO_NEG
HO_POS
LO_POS
L0_NEG
FAULT
DCMP
AGND
PGND
OCD2
OCD1
AGND
MUTE
REF
SUB
V10
NC
V5
V5
Bandgap reference times two (typically 2.5VDC). Used to set the common
Analog Ground
High side gate drive output for negative amplifier half-bridge
Low side gate drive output\ for positive amplifier half-bridge
High side gate drive output for positive amplifier half-bridge
Negative supply voltage sense input. This pin is used for both over and under
Positive supply voltage sense input. This pin is used for both over and under
Output of op-amp used to provide signal to the amplifier.
Output of auxiliary op-amp
Negative input of auxiliary op-amp. Internally biased at 2.5VDC.
mode voltage for the input op amps. This pin is not capable of driving external
circuitry.
Internal mode selection. This pin must be connected to 5V for proper device
operation.
5 Volt power supply input
Break-before-make timing control to prevent shoot-through in the output
Mosfets.
10V under-voltage fault pin (requires external pull-up resistor)
Over-current detect pins for negative output.
Switching feedback for negative output.
Power Ground.
Low side gate drive output for negative amplifier half-bridge
10 Volt power supply input. Used for gate drive circuitry.
Switching feedback for positive output.
Over-current detect pins for positive output.
A logic high output indicates an under-voltage (5V or 10V), over-current or
over-temperature condition (requires and external pull-down resistor).
Over-Current Detect pin. This pin must be connected to AGND for proper
device operation.
Internal bandgap reference voltage; approximately 1.0 VDC. Requires an
external 8.25k resistor to AGND.
Over-Current Detect pin. This pin must be connected to AGND for proper
device operation.
Substrate pin. Must connect to AGND.
voltage sensing for the VNN supply.
voltage sensing for the VPP supply.
Analog Ground. External input circuitry such as preamps or gain controls
should be referenced to these pins.
5 Volt power supply input.
Negative input of amplifier op-amp.
When set to logic high, the amplifier is in idle mode. When low (grounded), the
amplifier outputs are fully operational. Mute can be connected to the FAULT
pin to enable auto restart after a fault occurrence.
Not Connected internally. These pins may be grounded or left floating on the
PCB layout.
T r i p a t h T e c h n o l o g y , I n c . - P r e l i m i n a r y I n f o r m a t i o n
Description
T D A 1 4 0 0 – R e v . 0 . 6 5 / K L i / 0 2 . 0 6