braudio1013

Audio solution guide
Analog audio ICs
Analog audio solution
STMicroelectronics offers smart analog audio solutions for all
audio equipment
Leveraging its long experience in audio devices, ST offers an analog audio device portfolio covering
all audio segments from a few milliwatts up to hundreds of watts. ST’s portfolio offers portables, home
systems and TVs a smart and reliable design resource with outstanding audio quality that takes into
account the needs of the most innovative and up-to-date audio equipment.
This brochure includes a selection guide for all of ST’s analog audio ICs, audio processors and power
amplifiers operating in class AB and class D. A section is dedicated to low-power amplifiers specifically
designed for portable and headphone applications.
ANALOG AUDIO ADVANTAGES
You will find what you are looking for in ST’s analog audio ICs portfolio to meet the needs of your particular application. Here we discuss the
different aspects of the different technologies available.
2
CLASS-AB AMPLIFIERS
Analog audio ICs using the traditional class-AB operating mode still offer specific advantages in
many applications. We can summarize these as follows:
• Excellent audio quality
• Reliability
• Simplicity of use
• Fast implementation reducing time to market
• No EMI issues
• No interference in multichannel equipment
• Low cost due to the reduced BOM
• Output power from a few mW up to 100 W per channel
The reduced efficiency versus class-D audio amplifiers is the only drawback for the final
application but this issue in most home-audio applications is not necessarily that important.
Analog audio ICs
• Power amplifiers
• Analog class AB
• Analog class D
• Low power
• Headphones and portables
• Audio processors
• Analog
CLASS-D AMPLIFIERS
Analog audio ICs using class-D operating
mode are the recommended solution in
applications where available space and
efficiency are the main constraints, as is the
case for portables and flat panel TVs, for
example.
The higher efficiency offered by class-D
solutions extends battery life in portable
equipment, reduces the heatsink dimensions
or eliminates it completely for the devices
assembled in packages that use the PCB
copper area as dissipating element.
ST’s class-D portfolio gives you a wide choice
of devices to meet the specific needs of
your particular application, including from
portables, active speakers, TVs and home
systems. Our class-D amplifiers feature:
• High efficiency
• Differential inputs for common mode noise
reduction
• Filterless operation
• Fixed selectable gains
• Externally synchronizable
• Output power from a few mW up to 200W
per channel
Normalized efficiency (%)
100
90
80
70
60
50
40
30
20
10
0
0
Class D
0.05
0.1
0.15
0.2
Normalized output power
0.25
0.3
Class AB
3
ANALOG AUDIO PROCESSORS
Analog audio processors are designed to control more advanced features on home audio systems, such as tone controls, surround mode, voice
canceller, input and output multiplexers, bass boost, bass ALC and headphone driving capability.
Data transmission between the main application microprocessor and the audio processor is via a 2-wire I²C bus interface.
Number of stereo
inputs
Tone control
Surround modes
TDA7430
4
3
3
TDA7439DS
4
3
TDA7440D
4
2
TDA7448
6 mono
TDA7468D
4
TDA7309D
3
Part number
Speaker
attenuation
Supply voltage
min/max (V)
Packages
•
7/10.2
TQFP44
•
•
7/10.2
SO28
•
•
6/10.2
SO28
4.75/10
SO20
5/10
SO28
6/10
SO20
Volume control
•
2
•
•
•
CLASS-AB ANALOG AMPLIFIERS
Medium and high power
Class-AB audio amplifiers offer excellent clarity and signal fidelity. Featuring pure analog, this signal quality is paid for with lower power
efficiency relative to class D amplifiers. Nevertheless, these reliable components offer a warm, full-bodied tone that guarantees their place in the
best audio systems available. The TDA729X family is recognized as a preferred solution for systems made with audiophiles in mind.
Mono
Stereo
Output power per
channel (W)
TDA2822D
•
•
TDA7233D
•
Part number
Supply voltage min/
max (V)
Packages
1 x 1, 2 x 0.3
1.8/15
SO8
1
1.8/15
SO8
Mute/standby
TDA7266P
•
5
•
3.5/12
PowerSO-20
TDA7266D
•
3
•
3.5/12
PowerSSO-24
CLASS-D ANALOG AMPLIFIERS
ST’s analog switch-mode class-D power amplifiers enable a higher efficiency, thus reducing the power dissipation and the need for larger
heatsinks.
The class-D portfolio ranges from 3 W up to 2 x 160 W in mono and stereo configurations and offers:
• Filtered and filterless operation
• External synchronization
• Selectable gains
• Surface-mount PSO36 and PSSO36 slug-up and -down packages for optimized space
Channels
Output power
(W)
Selectable gain (dB)
Filterless
TDA7493
1
2x3
20, 26, 30, 36
•
•
3 to 5.5
HTSSOP24
Part number
voltage
Differential inputs Supply
min/max (V)
Packages
Supply voltage min/
max (V)
Packages
8/28
Multiwatt 11
TDA7491LP
2
2x5
20, 26, 30, 36
•
•
5 to 14
PSSO36 slug-down
•
±5/±22
Multiwatt 11
TDA7491P
2
2 x 10
20, 26, 30, 36
•
•
5 to 18
PSSO36 slug-down
25
•
±5/±25
Multiwatt 8
TDA7491HV
2
2 x 20
20, 26, 30, 36
•
5 to 18
PSSO36 slug-down
•
25
•
±5/±25
Multiwatt 11
TDA7491MV
1
1 x 25
20, 26, 30, 36
•
5 to 18
PSSO36 slug-down
TDA7265A
•
25
•
10/50
Multiwatt 11
TDA7492
2
2 x 50
21.6, 27.6, 31.1, 33.6
•
10 to 26
PSSO36 slug-up
TDA7265B
•
30
•
±8/±35
Multiwatt 11
TDA7492P
2
2 x 25
21.6, 27.6, 31.1, 33.6
•
10 to 26
PSSO36 slug-down
7
•
3/18
Multiwatt 15
TDA7492MV
1
1 x 50
21.6, 27.6, 31.1, 33.6
•
10 to 26
PSSO36 slug-down
Stereo
Output power per
channel (W) (1)
TDA2009A
•
10
TDA7269A
•
14
TDA7264
•
TDA7265
Part number
4
Class AB, low power
ST’s low-power class-AB audio amplifiers offer quality and simplicity of use in applications such as small active speakers, radio and in all audio
equipment requiring low power and high-quality audio.
Mono
TDA7266M
•
Mute/Standby
TDA7266
•
7
•
3/18
Multiwatt 15
TDA7492PE
2
2 x 45
20.8, 26.8, 30, 32.8
•
7 to 26
PSSO36 slug-down
TDA7292
•
40
•
±8/±35
Multiwatt 11
TDA7492E*
2
2 x 60
20.8, 26.8, 30, 32.8
•
7 to 26
PSSO36 slug-up
TDA7296
•
60
•
±10/±40
Multiwatt 15
TDA7498L
2
2 x 80
25.6, 31.6, 35.1, 37.6
•
10 to 36
PSSO36 slug-up
TDA7295
•
80
•
±10/±40
Multiwatt 15
TDA7498
2
2 x 100
25.6, 31.6, 35.1, 37.6
•
10 to 36
PSSO36 slug-up
TDA7294V/HS
•
10
•
±10/±40
Multiwatt 15
TDA7498MV
1
1 x 100
25.6, 31.6, 35.1, 37.6
•
10 to 36
PSSO36 slug-up
TDA7293V/HS
•
100
•
±12/±50
Multiwatt 15
TDA7498E
2
2 x 160
1 x 220
23.8, 29.8, 33.3, 35.8
•
14 TO 36
PSSO36 slug-up
(2)
•
8/22
Multiwatt 15
• coming soon
STA540
Notes:
(1) Output power specified at THD = 10%
(2) Output power : 2 x 26 W; 2 x 12 W + 1 x 26 W; 4 x 12 W
2/3/4 ch
5
Headphone and low power for portables
ST’s headphone and low-power amplifier portfolio offers the design and feature flexibility needed to fit your application perfectly:
• Class-AB, class-G and filterless class-D architectures for optimal audio performance and power efficiency
• Integrated features to reduce bill of materials, such as capless and filterless amplification
• Many packaging options, including ultra-tiny packages for applications where board space is at a premium
Channels
Output power (W)
Supply voltage min/
max (V)
Packages
TS4990
1.2 W audio amplifier with standby
1
1 x 1.2
2/5.05
Flip-chip 500u, MSOP/TSSOP8,
SO8,VDFPN8
TS4994
1 W differential input/output audio amplifier with
selectable standby
1
1x1
2/5.05
MSOP/TSSOP8, VDFPN10
TS4994FC
1 W differential input/output audio amplifier with
selectable standby
1
1x1
2/5.05
Flip-chip 500u
Description
Channels
Output power (W)
Supply voltage min/
max (V)
Packages
TDA2822D
Dual low-voltage power amplifier
•
1 x 1, 2 x 0.3
1.8/15
SO8
TS4995
1.2 W fully differential amplifier with selectable
standby and 6 dB fixed gain
1
1 x 1.2
2/5.05
Flip-chip 500u
TDA7233D
1W audio amplifier with mute
1
1.8/15
SO8
TS4999
2 x 2.8 W class-D audio amplifier with selectable
3D effects
2
2x2
2/5.05
Flip-chip 500u
Part number
TS2007
3 W filter free class D with fixed gain
1
1x3
2/5.05
UFQFPN8
3 W filter free class D with 6-12 dB gain select
1
1x3
2/5.05
Flip-Chip 500u
TS2012
Filter free 2 x 2.8W
class D
2
2 x 2.8
2/5.05
VFQFPN 20
TS2012FC
Filter free 2 x 2.8W
class D
2
2 x 2.8
2/5.05
TS419
360 mW class AB
1
1x 0.36
2/5.05
MSOP/TSSOP8
TS421
360 mW class AB
1
1 x 0.36
2/5.05
VDFPN 8
TS4601B
High-performance headphone amplifier with
capless output and I²C bus interface
2
2 x 0.1
2/5.05
Flip-Chip 500u
TS4621B
High-performance class-G headphone amplifier
with I²C volume control
2
2 x 0.25
2/4.08
Flip-Chip 400u
TS4621E
High-performance class-G headphone amplifier
with I²C volume control
2
2 x 0.25
2/4.08
Flip-chip 400u
TS4621ML
High-performance class G headphone amplifier
with I²C volume control
2
2 x 0.25
2/4.08
Flip-chip 400u
TS4657
Digital audio line driver with 2.2 Vrms capless
outputs
3/5.05
VFQFPN 20
TS472
Very-low-noise microphone preamplifier
1
2/5.05
Flip-chip 500u,VFQFPN24
TS482
100 mW stereo headphone amplifier
2
2 x 0.1
2/5.05
MSOP/TSSOP8/SO8
TS4871
1 W audio amplifier with standby
1
1x1
2/5.05
MSOP/TSSOP8,SO8,VDFPN8
TS488
120 mW stereo headphone amplifier
1
2 x 0.12
2/5.05
UFSON8
TS4890
1 W audio amplifier with standby
1
1x1
2/5.05
MSOP/TSSOP8,SO8
TS4909
Ultra-low-power headphone amplifier with
capless output
1
1 x 0.88
2/5.05
VDFPN10
TS4962
3 W filter free class D with standby
1
1x3
2/6
UFQFPN8
3 W filter free
1
1x3
2/5.05
Flip-chip 500u
2 x 1 W audio amplifier with standby
2
2x1
2/5.05
VFQFPN16
TS2007FC
6
Description
Part number
TS4962M
TS4984
7
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Order code: BRAUDIO1013
For more information on ST products and solutions, visit www.st.com
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