Tripath Technology, Inc. - Technical Information
TC2001 Audio Signal Processor Pin Descriptions
Pin
Function
Description
1
BIASCAP
Bandgap reference times two (typically 2.5VDC). Used to set the
common mode voltage for the input op amps. This pin is not capable of
driving external circuitry.
2, 6
3
FBKGND2,
FBKGND1
DCMP
Ground Kelvin feedback (Channels 1 & 2)
Internal mode selection. This pin must be grounded for proper device
operation.
4, 7
FBKOUT2,
FBKOUT1
VPWR
Switching feedback (Channels 1 & 2)
5
8
Test pin. Must be left floating.
HMUTE
Logic output. A logic high indicates both amplifiers are muted, due to the
mute pin state, or a “fault”.
9, 12
10, 11
13
Y1, Y2
Y1B, Y2B
NC
Non-inverted switching modulator outputs.
Inverted switching modulator outputs.
No connect
14
OCD2
Over Current Detect input.
15
REF
Internal bandgap reference voltage; approximately 1.2 VDC.
Over Current Detect input.
16
OCD1
17
VNNSENSE
Negative supply voltage sense input. This pin is used for both over and
under voltage sensing for the VNN supply.
A logic low output indicates the input signal has overloaded the amplifier.
Positive supply voltage sense input. This pin is used for both over and
under voltage sensing for the VPP supply.
Ground.
18
19
OVRLDB
VPPSENSE
20
AGND
V5
21
5 Volt power supply input.
22, 27
23, 28
OAOUT1, OAOUT2 Input stage output pins.
IN1, IN2
Single-ended inputs. Inputs are a “virtual” ground of an inverting opamp
with approximately 2.4VDC bias.
24
MUTE
When set to logic high, both amplifiers are muted and in idle mode.
When low (grounded), both amplifiers are fully operational. If left floating,
the device stays in the mute mode. Ground if not used.
Break-before-make timing control to prevent shoot-through in the output
MOSFETs.
25, 26
BBM1, BBM0
7
TK2150 – Rev. 1.0/12.02
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