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PDF TK2070 Data sheet ( Hoja de datos )
| Número de pieza | TK2070 | |
| Descripción | STEREO 70W (4Ohm) CLASS-T DIGITAL AUDIO AMPLIFIER DRIVER | |
| Fabricantes | Tripath Technology | |
| Logotipo |  |
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Tripath Technology, Inc. - Technical Information
TK2070
STEREO 70W (4Ω) CLASS-T™ DIGITAL AUDIO AMPLIFIER
DRIVER USING DIGITAL POWER PROCESSING (DPP™)
TECHNOLOGY
Preliminary Information
Revision 2.1 – October 2003
GENERAL DESCRIPTION
The TK2070 (TC2001/TPS1035 chipset) is a bridged stereo 70W continuous average power per
channel, Class-T Digital Audio Power Amplifier using Tripath’s proprietary Digital Power ProcessingTM
technology. The TK2070 chipset consists of 1 TC2001 and 4 TPS1035’s to obtain a bridged stereo
configuration. 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 (4Ω / 8Ω)
Powered Subwoofer
BENEFITS
Single Supply Operation
Very High Efficiency
Wide Dynamic Range
Compact layout
FEATURES
Class-T Architecture
High Output power
70W @ 4Ω, 10% THD+N Bridged
40W @ 8Ω, 10% THD+N Bridged
Audiophile Quality Sound
0.03% THD+N @ 35W 4Ω Bridged
0.03% THD+N @ 25W 8Ω Bridged
High Efficiency
86% @ 70W 4Ω Bridged
92% @ 40W 8Ω Bridged
Dynamic Range >100 dB
1 TK2070 – MC/2.1/10-03
1 page  
Tripath Technology, Inc. - Technical Information
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. Not used on the TK2070, these pins should
be tied to ground.
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. Not used on the TK2070, this
pin should be tied to ground through a 10kΩ resistor.
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 op-amp
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. When using with the TPS1035, these pins should both be
set to 5V.
TC2001 AUDIO SIGNAL PROCESSOR PINOUT
28-pin SOIC
(Top View)
BIASCAP
FBKGND2
DCMP
FBKOUT2
VPW R
FBKGND1
FBKOUT1
HMUTE
Y1
Y1B
Y2B
Y2
NC
OCD2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28 INV2
27 OAOUT2
26 BBM0
25 BBM1
24 MUTE
23 INV1
22 OAOUT1
21 V5
20 AGND
19 VPPSENSE
18 OVRLDB
17 VNNSENSE
16 OCD1
15 REF
5 TK2070 – MC/2.1/10-03
5 Page 
Tripath Technology, Inc. - Technical Information
T Y P I C A L P E R F O R M A N C E C H A R A C T E R I S T I C S (cont’d)
Efficiency vs Output Power
100
90
80
70
60
50
40
30 VCC = 24V
RL = 4Ω
20 THD+N <10%
10
0
0 10 20 30 40 50 60 70 80
Output Power (W)
100
90
80
70
60
50
40
30
20
10
0
0
Efficiency vs Output Power
VCC = 24V
RL = 8Ω
THD+N <10%
5 10 15 20 25 30 35 40 45
Output Power (W)
+0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
20
Channel Seperation vs Frequency
VCC = 24V
POUT = 9W/Channel
RL = 4Ω
0dB = 8.8Vrms
BW = 22Hz-20kHz
50 100 200
500 1k
2k
Frequency (Hz)
5k
10k 20k
+0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
20
Channel Seperation vs Frequency
VCC = 24V
POUT = 4.5W/Channel
RL = 8Ω
0dB = 6Vrms
BW = 22Hz-20kHz
50 100 200
500 1k
2k
Frequency (Hz)
5k
10k 20k
+0
-12
VCC = 24V
POUT = 0W/Channel
-24
RL = 4Ω
AV = 12V/V
BW = 22Hz-22kHz
-36
-48
-60
-72
-84
-96
-108
-120
20
50 100
Noise Floor
200 500 1k
Frequency (Hz)
2k
5k 10k 20k
Power Supply Rejection Ratio
+0
-10 VCC = 24V
RL = 4Ω
0dB = 200mVp-p
-20 Vripple = 200mVp-p
BW = 22Hz-22kHz
-30
-40
-50
-60
-70
-80
-90
-100
20
50 100 200
500 1k
Frequency (Hz)
2k
5k
10k 20k
11 TK2070 – MC/2.1/10-03
11 Page | ||
| Páginas | Total 21 Páginas | |
| PDF Descargar | [ Datasheet TK2070.PDF ] | |
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