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부품번호 | TS4872 기능 |
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기능 | RAIL TO RAIL INPUT/OUTPUT 1W AUDIO POWER AMPLIFIER WITH STANDBY MODE | ||
제조업체 | STMicroelectronics | ||
로고 | |||
전체 29 페이지수
TS4872
RAIL TO RAIL INPUT/OUTPUT
1W AUDIO POWER AMPLIFIER WITH STANDBY MODE
s OPERATING FROM VCC = 2.2V to 5.5V
s RAIL TO RAIL INPUT/OUTPUT
s 1W OUTPUT POWER @ Vcc=5V, THD=1%,
f=1kHz, with 8Ω Load
s ULTRA LOW CONSUMPTION IN STANDBY
MODE (10nA)
s 75dB PSRR @ 217Hz @ 5 & 2.6V
s ULTRA LOW POP & CLICK
s ULTRA LOW DISTORTION (0.05%)
s UNITY GAIN STABLE
s 8 X170µm BUMPS FLIP CHIP PACKAGE
DESCRIPTION
The TS4872 is an Audio Power Amplifier capable
of delivering 1W of continuous RMS Ouput Power
into 8Ω load @ 5V.
This Audio Amplifier is exhibiting 0.1% distortion
level (THD) from a 5V supply for a Pout = 250mW
RMS. An external standby mode control reduces
the supply current to less than 10nA. An internal
shutdown protection is provided.
The TS4872 has been designed for high quality
audio applications such as mobile phones and to
minimize the number of external components.
The unity-gain stable amplifier can be configured
by external gain setting resistors.
APPLICATIONS
s Mobile Phones (Cellular / Cordless)
s PDAs
s Laptop/Notebook computers
s Portable Audio Devices
ORDER CODE
Part
Number
TS4872IJT
Temperature
Range
-40, +85°C
Package
J
q
Marking
YW4872
J = Flip Chip Package - only available in Tape & Reel (JT)
October 2002
PIN CONNECTIONS (Top View)
TS4872IJT - FLIP CHIP
7 65
Vin+ Vcc STDBY
8 Vout1
Vout2 4
Vin GND BYPASS
12
3
TYPICAL APPLICATION SCHEMATIC
Audio
Input
Rin
Cin
Cfeed
Rfeed Vcc
6
1 Vin- -
7 Vin+ +
Vcc
Rstb
3 Bypass
5 Standby
Bias
Cb
2
Cs
Vout1 8
-
Av=-1
+
Vout2 4
RL
8 Ohms
TS4872
1/29
TS4872
ELECTRICAL CHARACTERISTICS
VCC = 2.6V, GND = 0V, Tamb = 25°C (unless otherwise specified)
Symbol
Parameter
Min. Typ. Max. Unit
ICC
Supply Current
No input signal, no load
5.5 8
ISTANDBY
Standby Current 1)
No input signal, Vstdby = Vcc, RL = 8Ω
10 1000
Voo
Output Offset Voltage
No input signal, RL = 8Ω
5 20
Po
Output Power
THD = 1% Max, f = 1kHz, RL = 8Ω
260
THD + N
Total Harmonic Distortion + Noise
Po = 200mW rms, Gv = 2, 20Hz < f < 20kHz, RL = 8Ω
0.1
PSRR
Power Supply Rejection Ratio 2)
f = 217Hz, RL = 8Ω, RFeed = 22KΩ, Vripple = 200mV rms
75
ΦM
Phase Margin at Unity Gain
RL = 8Ω, CL = 500pF
70
Gain Margin
GM RL = 8Ω, CL = 500pF
20
GBP
Gain Bandwidth Product
RL = 8Ω
2
1. Standby mode is actived when Vstdby is tied to Vcc
2. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the surimposed sinus signal to Vcc @ f = 217Hz
mA
nA
mV
mW
%
dB
Degrees
dB
MHz
VCC = 2.2V, GND = 0V, Tamb = 25°C (unless otherwise specified)
Symbol
Parameter
Min. Typ. Max. Unit
ICC
Supply Current
No input signal, no load
4.5
ISTANDBY
Standby Current 1)
No input signal, Vstdby = Vcc, RL = 8Ω
10
Voo
Output Offset Voltage
No input signal, RL = 8Ω
2
Po
Output Power
THD = 1% Max, f = 1kHz, RL = 8Ω
180
THD + N
Total Harmonic Distortion + Noise
Po = 200mW rms, Gv = 2, 20Hz < f < 20kHz, RL = 8Ω
0.1
PSRR
Power Supply Rejection Ratio 2)
f = 217Hz, RL = 8Ω, RFeed = 22KΩ, Vripple = 100mVpp
75
ΦM
Phase Margin at Unity Gain
RL = 8Ω, CL = 500pF
70
Gain Margin
GM RL = 8Ω, CL = 500pF
20
GBP
Gain Bandwidth Product
RL = 8Ω
2
1. Standby mode is actived when Vstdby is tied to Vcc
2. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the surimposed sinus signal to Vcc @ f = 217Hz
mA
nA
mV
mW
%
dB
Degrees
dB
MHz
4/29
4페이지 Fig. 7 : Open Loop Frequency Response
100
80
60
Gain
40
Phase
20
0
Vcc = 5V
-20
CL = 560pF
Tamb = 25°C
-40
0.3 1
10 100 1000
Frequency (kHz)
-80
-100
-120
-140
-160
-180
-200
-220
10000
Fig. 9 : Open Loop Frequency Response
100
80 Phase
60
Gain
40
20
0
Vcc = 2.6V
-20 CL = 560pF
Tamb = 25°C
-40
0.3 1
10 100 1000
Frequency (kHz)
-80
-100
-120
-140
-160
-180
-200
-220
-240
10000
TS4872
Fig. 8 : Open Loop Frequency Response
100
80 Phase
60
Gain
40
20
0
-20
-40
0.3
Vcc = 3.3V
CL = 560pF
Tamb = 25°C
1 10 100 1000
Frequency (kHz)
-80
-100
-120
-140
-160
-180
-200
-220
-240
10000
7/29
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부품번호 | 상세설명 및 기능 | 제조사 |
TS487 | 100mW STEREO HEADPHONE AMPLIFIER WITH STANDBY MODE | STMicroelectronics |
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DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |