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TS4902IST

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P19
1/19
■ OPERATING FROM V
CC
= 2.2V to 5.5V
■ 0.7W OUTPUT POWER @ Vcc=5V, THD=1%,
f=1kHz, with an 8
Ω load
■ 0.3W OUTPUT POWER @ Vcc=3.3V,
THD=1%, f=1kHz, with an 8
Ω load
■ ULTRA LOW CONSUMPTION IN STANDBY
MODE (10nA)
■ 77dB PSRR @ 217Hz from 5V to 2.2V
■ ULTRA LOW POP & CLICK
■ ULTRA LOW DISTORTION (0.1%)
■ UNITY GAIN STABLE
■ 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 8
Ω 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
■ Mobile Phones (Cellular / Cordless)
■ PDAs
■ Portable Audio Devices
ORDER CODE
S = MiniSO Package (MiniSO) is only available in Tape & Reel (ST)
D = Small Outline Package (SO) - also available in Tape & Reel (DT)
PIN CONNECTIONS (top view)
Part Number
Temperature
Range
Package
ST D
TS4902IST
-40, +85°C
•
TS4902ID
•
Standby
Bypass
V+
IN
VIN-
V2OUT
GND
V
CC
VOUT1
1
2
3
4
8
7
6
5
TYPICAL APPLICATION SCHEMATIC
TS4902IS-TS4902IST - MiniSO8
TS4902ID-TS4902IDT - SO8
Standby
Bypass
V+
IN
VIN-
V2OUT
GND
V
CC
VOUT1
1
2
3
4
8
7
6
5
Cb
Cin
Rin
Rfeed
Rstb
RL
8 Ohm
s
Cs
Input
Audio
Cfeed
VCC
VCC
Bias
AV = -1
Vin-
Vin+
Bypass
Standby
V
C
GND
Vout 1
Vout 2
+
-
+
-
4
2
6
5
7
1
3
8
TS4902
January 2002
TS4902
300mW at 3.3V SUPPLY AUDIO POWER AMPLIFIER
WITH STANDBY MODE ACTIVE LOW
TS4902
2/19
ABSOLUTE MAXIMUM RATINGS
OPERATING CONDITIONS
Symbol Parameter Value Unit
V
CC
Supply voltage
1)
6V
V
i
Input Voltage
2)
G
ND
to V
CC
V
T
oper
Operating Free Air Temperature Range -40 to + 85 °C
T
stg
Storage Temperature -65 to +150 °C
T
j
Maximum Junction Temperature 150 °C
R
thja
Thermal Resistance Junction to Ambient
3)
SO8
MiniSO8
175
215
°C/W
Pd
Power Dissipation
4)
See the power derating
curves Fig 20.
ESD Human Body Model 2 kV
ESD Machine Model 200 V
Latch-up Latch-up Immunity Class A
Lead Temperature (soldering, 10sec) 250 °C
1. All voltages values are measured with respect to the ground pin.
2. The magnitude of input signal must never exceed V
CC
+ 0.3V / G
ND
- 0.3V
3. Device is protected in case of over temperature by a thermal shutdown active @ 150°C.
4. Exceeding the power derating curves during a long period, will cause abnormal operation.
Symbol Parameter Value Unit
V
CC
Supply Voltage 2.2 to 5.5 V
V
ICM
Common Mode Input Voltage Range
G
ND
to V
CC
- 1.5V
V
V
STB
Standby Voltage Input :
Device ON
Device OFF
1.5
≤
V
STB
≤
V
CC
GND
≤
V
STB
≤
0.5
V
R
L
Load Resistor 4 - 32
Ω
R
thja
Thermal Resistance Junction to Ambient
1)
SO8
MiniSO8
150
190
°C/W
1. This thermal resistance can be reduced with a suitable PCB layout (see Power Derating Curves)
TS4902
3/19
ELECTRICAL CHARACTERISTICS
V
CC
= +5V, GND = 0V, T
amb
= 25°C (unless otherwise specified)
V
CC
= +3.3V, GND = 0V, T
amb
= 25°C (unless otherwise specified)
3)
Symbol Parameter Min. Typ. Max. Unit
I
CC
Supply Current
No input signal, no load
68mA
I
STANDBY
Standby Current
1)
No input signal, Vstdby = GND, RL = 8
Ω
1. Standby mode is actived when Vstdby is tied to GND
10 1000 nA
Voo
Output Offset Voltage
No input signal, RL = 8
Ω
520mV
Po
Output Power
THD = 1% Max, f = 1kHz, RL = 8
Ω
0.7 W
THD + N
Total Harmonic Distortion + Noise
Po = 250mW rms, Gv = 2, 20Hz < f < 20kHz, RL = 8
Ω
0.15 %
PSRR
Power Supply Rejection Ratio
2)
f = 217Hz, RL = 8
Ω,
RFeed = 22K
Ω,
Vripple = 200mV rms
2. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the surimposed sinus signal to Vcc @ f = 217Hz
77 dB
Φ
M
Phase Margin at Unity Gain
R
L
= 8
Ω
, C
L
= 500pF
70 Degrees
GM
Gain Margin
R
L
= 8
Ω
, C
L
= 500pF
20 dB
GBP
Gain Bandwidth Product
R
L
= 8
Ω
2MHz
Symbol Parameter Min. Typ. Max. Unit
I
CC
Supply Current
No input signal, no load
5.5 8 mA
I
STANDBY
Standby Current
1)
No input signal, Vstdby = GND, RL = 8
Ω
1. Standby mode is actived when Vstdby is tied to GND
10 1000 nA
Voo
Output Offset Voltage
No input signal, RL = 8
Ω
520mV
Po
Output Power
THD = 1% Max, f = 1kHz, RL = 8
Ω
300 mW
THD + N
Total Harmonic Distortion + Noise
Po = 250mW rms, Gv = 2, 20Hz < f < 20kHz, RL = 8
Ω
0.15 %
PSRR
Power Supply Rejection Ratio
2)
f = 217Hz, RL = 8
Ω,
RFeed = 22K
Ω,
Vripple = 200mV rms
2. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the surimposed sinus signal to Vcc @ f = 217Hz
3. All electrical values are made by correlation between 2.6V and 5V measurements
77 dB
Φ
M
Phase Margin at Unity Gain
R
L
= 8
Ω
, C
L
= 500pF
70 Degrees
GM
Gain Margin
R
L
= 8
Ω
, C
L
= 500pF
20 dB
GBP
Gain Bandwidth Product
R
L
= 8
Ω
2MHz
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P19

TS4902IST

Mfr. #:
Buy TS4902IST
Manufacturer:
STMicroelectronics
Description:
IC AMP AUDIO PWR .7W MONO 8MSOP
Lifecycle:
New from this manufacturer.
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