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PDF TS4902 Data sheet ( Hoja de datos )

Número de pieza TS4902
Descripción 300mW at 3.3V SUPPLY AUDIO POWER AMPLIFIER WITH STANDBY MODE ACTIVE LOW
Fabricantes STMicroelectronics　
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No Preview Available ! TS4902 Hoja de datos, Descripción, Manual

TS4902
300mW at 3.3V SUPPLY AUDIO POWER AMPLIFIER
WITH STANDBY MODE ACTIVE LOW
s OPERATING FROM VCC = 2.2V to 5.5V
s 0.7W OUTPUT POWER @ Vcc=5V, THD=1%,
f=1kHz, with an 8Ω load
s 0.3W OUTPUT POWER @ Vcc=3.3V,
THD=1%, f=1kHz, with an 8Ω load
s ULTRA LOW CONSUMPTION IN STANDBY
MODE (10nA)
s 77dB PSRR @ 217Hz from 5V to 2.2V
s ULTRA LOW POP & CLICK
s ULTRA LOW DISTORTION (0.1%)
s UNITY GAIN STABLE
s AVAILABLE IN MiniSO8 & SO8
DESCRIPTION
The TS4902 is an audio power amplifier designed
to provide the best price to power ratio while pre-
serving high audio quality.
Available in MiniSO8 & SO8 package, it is capable
of delivering up to 0.7W of continuous RMS ouput
power into an 8Ω load @ 5V.
TS4902 is also exhibiting an outstanding 0.1%
distortion level (THD) from a 5V supply for a Pout
of 200mW RMS.
An externally controlled standby mode reduces
the supply current to less than 10nA. It also in-
cludes an internal thermal shutdown protection.
The unity-gain stable amplifier can be configured
by external gain setting resistors.
APPLICATIONS
s Mobile Phones (Cellular / Cordless)
s PDAs
s Portable Audio Devices
ORDER CODE
Part Number
TS4902IST
TS4902ID
Temperature
Range
-40, +85°C
Package
ST D
•
•
S = MiniSO Package (MiniSO) is only available in Tape & Reel (ST)
D = Small Outline Package (SO) - also available in Tape & Reel (DT)
January 2002
PIN CONNECTIONS (top view)
TS4902IS-TS4902IST - MiniSO8
Standby
Bypass
VIN+
VIN-
1
2
3
4
8 VOUT2
7 GND
6 VCC
5 VOUT1
TS4902ID-TS4902IDT - SO8
Standby
Bypass
VIN+
VIN-
1
2
3
4
8 VOUT2
7 GND
6 VCC
5 VOUT1
TYPICAL APPLICATION SCHEMATIC
Audio
Input
Rin
Cin
VCC
Rstb
Cfeed
Rfeed VCC
6
4 Vin- -
3 Vin+ +
V
C
Cs
Vout 1 5
2 Bypass
1 Standby Bias
-
AV = -1
+
GND
Cb 7
Vout 2 8
TS4902
RL
8 Ohms
1/19

1 page




TS4902 pdf
Fig. 1 : Open Loop Frequency Response
60
40
Phase
20
0
-20
-40
0.3 1
Gain
Vcc = 5V
RL = 8Ω
Tamb = 25°C
10 100 1000
Frequency (kHz)
10000
0
-20
-40
-60
-80
-100
-120
-140
-160
-180
-200
-220
Fig. 3 : Open Loop Frequency Response
80
60
40
Phase
20
0
-20
-40
0.3 1
Gain
Vcc = 33V
RL = 8Ω
Tamb = 25°C
10 100 1000
Frequency (kHz)
10000
0
-20
-40
-60
-80
-100
-120
-140
-160
-180
-200
-220
-240
Fig. 5 : Open Loop Frequency Response
80
60
40
Phase
20
0
-20
-40
0.3 1
Gain
Vcc = 2.6V
RL = 8Ω
Tamb = 25°C
10 100 1000
Frequency (kHz)
10000
0
-20
-40
-60
-80
-100
-120
-140
-160
-180
-200
-220
-240
TS4902
Fig. 2 : Open Loop Frequency Response
60
40
Phase
20
0
-20
-40
0.3 1
Gain Vcc = 5V
ZL = 8Ω + 560pF
Tamb = 25°C
10 100 1000
Frequency (kHz)
10000
0
-20
-40
-60
-80
-100
-120
-140
-160
-180
-200
-220
Fig. 4 : Open Loop Frequency Response
80
60
40
Phase
20
0
-20
-40
0.3 1
Gain
Vcc = 3.3V
ZL = 8Ω + 560pF
Tamb = 25°C
10 100 1000
Frequency (kHz)
10000
0
-20
-40
-60
-80
-100
-120
-140
-160
-180
-200
-220
-240
Fig. 6 : Open Loop Frequency Response
80
60
40
Phase
20
0
-20
-40
0.3 1
Gain
Vcc = 2.6V
ZL = 8Ω + 560pF
Tamb = 25°C
10 100 1000
Frequency (kHz)
10000
0
-20
-40
-60
-80
-100
-120
-140
-160
-180
-200
-220
-240
5/19

5 Page





TS4902 arduino
Fig. 32 : THD + N vs Output Power
10
RL = 8Ω
Vcc = 5V
Gv = 2
Cb = Cin = 1µF
BW < 125kHz
1 Tamb = 25°C
20Hz, 1kHz
20kHz
0.1
1E-3
0.01
0.1
Output Power (W)
1
Fig. 34 : THD + N vs Output Power
10
RL = 8Ω, Vcc = 3.3V
Gv = 2
Cb = Cin = 1µF
BW < 125kHz
Tamb = 25°C
1
20Hz, 1kHz
20kHz
0.1
1E-3
0.01
0.1
Output Power (W)
1
Fig. 36 : THD + N vs Output Power
10
RL = 8Ω, Vcc = 2.6V
Gv = 2
Cb = Cin = 1µF
BW < 125kHz
Tamb = 25°C
1
0.1
1E-3
20Hz, 1kHz
20kHz
0.01
0.1
Output Power (W)
TS4902
Fig. 33 : THD + N vs Output Power
10
RL = 8Ω
Vcc = 5V
Gv = 10
Cb = Cin = 1µF
BW < 125kHz
1 Tamb = 25°C
20Hz
20kHz
0.1
1kHz
1E-3
0.01
0.1
Output Power (W)
1
Fig. 35 : THD + N vs Output Power
10
RL = 8Ω, Vcc = 3.3V
Gv = 10
Cb = Cin = 1µF
BW < 125kHz
Tamb = 25°C
1
20Hz
20kHz
0.1
1kHz
1E-3
0.01
0.1
Output Power (W)
Fig. 37 : THD + N vs Output Power
10
RL = 8Ω, Vcc = 2.6V
Gv = 10
Cb = Cin = 1µF
BW < 125kHz
Tamb = 25°C
1
20Hz
20kHz
0.1
1E-3
1kHz
0.01
0.1
Output Power (W)
1
11/19

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