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Tripath Technology, Inc. - Technical Information
TC2000
STEREO CLASS-T™ AUDIO CONTROLLER USING DIGITAL POWER PROCESSING (DPP™) TECHNOLOGY
Technical Information
Revision 1.1 – December 2003
GENERAL DESCRIPTION
The TC2000 is a two channel audio controller that uses Tripath’s proprietary Digital Power Processing (DPPTM) technology. When combined with switching power output stages, the TC2000 allows the implementation of a complete Class-T audio amplifier. Class-T amplifiers offer both the audio fidelity of Class-AB and the power efficiency of Class-D amplifiers.
APPLICATIONS
5.1-Channel DVD Mini/Micro Component Systems Home Theater Stereo applications
BENEFITS
High fidelity, high efficiency Class-T Analog inputs
FEATURES
Class-T Architecture Audiophile Quality Sound
0.007% THD+N @ 30W 8Ω (with TP2050) High Efficiency
92% @ 60W 8Ω (with TP2050) Dynamic Range >100 dB
1 TC2000 – KLI/1.1/12-03
Tripath Technology, Inc. - Technical Information
A B S O L U T E M A X I M U M R A T I N G S (Note 1)
SYMBOL V5 Vlogic TA TSTORE TJMAX
PARAMETER 5V Power Supply Input Logic Level Operating Free-air Temperature Range Storage Temperature Range Maximum Junction Temperature
ESDHB
ESD Susceptibility – Human Body Model (Note 2), all pins
Value 6
V5+0.3V -40 to 85 -55 to 150
150
2000
UNITS V V °C °C °C
V
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. See the table below for Operating Conditions.
Note 2: Human body model, 100pF discharged through a 1.5KΩ resistor.
OPERATING CONDITIONS
SYMBOL V5 VHI VLO TA
PARAMETER Supply Voltage Logic Input High Logic Input Low Operating Temperature Range
MIN. 4.5 V5-1.0
TYP. 5
-40 25
MAX. 5.5
1 85
UNITS V V V °C
THERMAL CHARACTERISTICS
TC2000 SYMBOL
θJA
PARAMETER Junction-to-ambient Thermal Resistance (still air)
Value 80
UNITS °C/W
ELECTRICAL CHARACTERISTICS
SYMBOL I5 fsw VIN VOUTHI VOUTLO RIN
PARAMETER Supply Current Switching Frequency (adjustable via CFB) Input Sensitivity High Output Voltage Low Output Voltage Input Impedance Input DC Bias
MIN.
600 0
V5-0.5
TYP. 60 650
2 2.5
MAX.
1.5 100
UNITS mA kHz V V mV kΩ V
2 TC2000 – KLI/1.1/12-03
Tripath Technology, Inc. - Technical Information
TC2000 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
Function
BIASCAP
FDBKP2, FDBKP1
DCMP
FDBKN2, FDBKN1 VPWR
HMUTE
Y1, Y2 Y1B, Y2B NC OCD2, OCD1 REF VNNSENSE OVRLDB VPPSENSE AGND V5 OAOUT1, OAOUT2
INV1, INV2
24 MUTE 25, 26 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.
Positive switching feedback.
Internal mode selection. This pin must be grounded for proper device operation.
Negative switching feedback.
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. Ground if not used.
Internal reference voltage; approximately 1.2 VDC.
Negative power stage over/under supply voltage sense resistor tie point.
A logic low output indicates the input signal has overloaded the amplifier. Positive power stage over/under supply voltage sense resistor tie point.
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.
TC2000 AUDIO SIGNAL PROCESSOR PINOUT
BIASCAP FDBKP2 DCMP FDBKN2 VPWR FDBKP1 FDBKN1 HMUTE Y1 Y1B Y2B Y2 NC OCD2
1 2 3 4 5 6 7 8 9 10 11 12 13 14
28 27 26 25 24 23 22 21 20 19 18 17 16 15
INV2 OAOUT2 BBM0 BBM1 MUTE INV1 OAOUT1 V5 AGND VPPSENSE OVRLDB VNNSENSE OCD1 REF
3 TC2000 – KLI/1.1/12-03
APPLICATION / TEST DIAGRAM
Inputs and TC2000
Tripath Technology, Inc. - Technical Information
V5
RCA J9
IN1 2 2
RCA J10
1 ROFB
5K
3
ROFA 500K
COF .1u;50V
1 1
CI 2.2u;10V
+
V5
RI 20K
1
ROFB 5K
2
3
ROFA 500K
COF .1u;50V
1
1
+
CI
IN2 2
2.2u;10V
2
RI 20K
ROFA 500K
RF 20K
ROFA 500K
RF 20K
RREF 8.2K
RVNNSENSE 10k
RVPPSENSE 20k
V5
1 JP 2 JUMPER
V5
15 REF
16 OCD0
17 VNNSENSE
18 OVRLDB
19 VPPSENSE
20 AGND
OCD1 NC Y2 Y2B Y1B Y1
HMUTE
14 13 12 11 10 9 8
21 V5
FDBKN1 7
22 OAOUT1
23 IN V 1
24 MUTE
TC2000 FDBKP1 6
25 BBM2
26 BBM1
27 OAOUT2
28 IN V 2
VPWR FDBKN2
5 4
V5 V5
CS .1u;50V
+
CS 100u;16V
DCMP 3
FDBKP2 B IA S C A P
2 1
C7 .1u;50V
Y2 Y2B Y1B Y1 HMUTE
RFBC
RFBB
CFB
RFBB
RFBC CFB
RFBB
RFBC CFB
RFBB
RFBC CFB
OUT1A OUT1B OUT2A OUT2B
4 TC2000 – KLI/1.1/12-03
Tripath Technology, Inc. - Technical Information
E X T E R N A L C O M P O N E N T S D E S C R I P T.