參數(shù)資料
型號(hào): TPA6011A4PWPG4
廠商: TEXAS INSTRUMENTS INC
元件分類: 音頻控制
英文描述: 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO24
封裝: GREEN, PLASTIC, HTSSOP-24
文件頁(yè)數(shù): 1/35頁(yè)
文件大小: 744K
代理商: TPA6011A4PWPG4
www.ti.com
FEATURES
DESCRIPTION
APPLICATIONS
APPLICATION CIRCUIT
PGND
ROUT-
PVDD
RHPIN
RLINEIN
RIN
VDD
LIN
LLINEIN
LHPIN
PVDD
LOUT-
1
ROUT+
SE/BTL
HP/LINE
VOLUME
SEDIFF
SEMAX
AGND
BYPASS
FADE
SHUTDOWN
LOUT+
PGND
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
CS
Ci
VDD
Right HP
Audio Source
Ci
CS
Ci
CS
Power Supply
Right Line
Audio Source
Left Line
Audio Source
Left HP
Audio Source
Power Supply
VDD
100 k
100 k
CC
In From DAC
or
Potentiometer
(DC Voltage)
C(BYP)
System
Control
CC
Right
Speaker
Left
Speaker
Headphone
s
1 k
1 k
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
10
20
30
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
Volume [Pin 21] - V
DC VOLUME CONTROL
SE Volume,
SEDIFF [Pin 20] = 0 V
SE Volume,
SEDIFF [Pin 20] = 1 V
V
olume
-
dB
BTL Volume
BTL Volume (dB)
∝ Volume (V)
SE Volume (dB)
∝ Volume (V) - SEDIFF
(V)
TPA6011A4
SLOS392A – FEBRUARY 2002 – REVISED JULY 2004
3-W STEREO AUDIO POWER AMPLIFIER
WITH ADVANCED DC VOLUME CONTROL
Advanced DC Volume Control With 2-dB
The TPA6011A4 is a stereo audio power amplifier
Steps
that drives 3 W/channel of continuous RMS power
From -40 dB to 20 dB
into a 3-
load. Advanced dc volume control
minimizes external components and allows BTL
– Fade Mode
(speaker) volume control and SE (headphone) vol-
– Maximum Volume Setting for SE Mode
ume control. Notebook and pocket PCs benefit from
– Adjustable SE Volume Control
the integrated feature set that minimizes external
Referenced to BTL Volume Control
components without sacrificing functionality.
3 W Into 3-
Speakers
To simplify design, the speaker volume level is
adjusted by applying a dc voltage to the VOLUME
Stereo Input MUX
terminal. Likewise, the delta between speaker volume
Differential Inputs
and headphone volume can be adjusted by applying
a dc voltage to the SEDIFF terminal. To avoid an
unexpected
high
volume
level
through
the
Notebook PC
headphones, a third terminal, SEMAX, limits the
LCD Monitors
headphone volume level when a dc voltage is ap-
plied. Finally, to ensure a smooth transition between
Pocket PC
active and shutdown modes, a fade mode ramps the
volume up and down.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Copyright 2002–2004, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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