Tr i path Technol ogy, I nc. - Techni cal I nfor m ati on
TC2001 Audio Signal Processor Pin Descriptions
Pin
1
2, 6
3
4, 7
5
8
9, 12
10, 11
13
14, 16
15
17
18
19
20
21
22, 27
23, 28
24
25, 26
Function
BIASCAP
FBKGND2,
FBKGND1
DCMP
FBKOUT2,
FBKOUT1
VPWR
HMUTE
Y1, Y2
Y1B, Y2B
NC
OCD2, OCD1
REF
VNNSENSE
OVRLDB
VPPSENSE
AGND
V5
OAOUT1, OAOUT2
INV1, INV2
MUTE
BBM1, BBM0
Description
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.
Ground Kelvin feedback (Channels 1 & 2)
Internal mode selection. This pin must be grounded for proper device
operation.
Switching feedback (Channels 1 & 2)
Test pin. Must be left floating.
Logic output. A logic high indicates both amplifiers are muted, due to the
mute pin state, or a “fault”.
Non-inverted switching modulator outputs.
Inverted switching modulator outputs.
No connect
Over Current Detect pins.
Internal bandgap reference voltage; approximately 1.2 VDC.
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.
Analog Ground.
5 Volt power supply input.
Input stage output pins.
Single-ended inputs. Inputs are a “virtual” ground of an inverting opamp
with approximately 2.4VDC bias.
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.
8 of 8
TK2350, Rev 1.5/09.03
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