TS4871 STANDBY MODE Datasheet

TS4871 Datasheet, PDF, Equivalent


Part Number

TS4871

Description

OUTPUT RAIL TO RAIL 1W AUDIO POWER AMPLIFIER WITH STANDBY MODE

Manufacture

STMicroelectronics

Total Page 28 Pages
Datasheet
Download TS4871 Datasheet


TS4871
TS4871
OUTPUT RAIL TO RAIL 1W AUDIO POWER AMPLIFIER
WITH STANDBY MODE
s OPERATING FROM VCC = 2.5V to 5.5V
s 1W RAIL TO RAIL OUTPUT POWER @
Vcc=5V, THD=1%, f=1kHz, with 8Load
s ULTRA LOW CONSUMPTION IN STANDBY
MODE (10nA)
s 75dB PSRR @ 217Hz from 5V to 2.6V
s ULTRA LOW POP & CLICK
s ULTRA LOW DISTORTION (0.1%)
s UNITY GAIN STABLE
s AVAILABLE IN SO8, MiniSO8 & DFN8 3x3mm
DESCRIPTION
The TS4871 is an Audio Power Amplifier capable
of delivering 1W of continuous RMS Ouput Power
into 8load @ 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
thermal shutdown protection is also provided.
The TS4871 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 Laptop / Notebook Computers
s PDAs
s Portable Audio Devices
ORDER CODE
Part Temperature Package
Number Range: I D S Q
TS4871
-40, +85°C
••
Marking
4871I
4871
MiniSO & DFN only available in Tape & Reel with T suffix(IST & IQT)
D = Small Outline Package (SO) - also available in Tape & Reel (DT)
June 2003
PIN CONNECTIONS (Top View)
TS4871IST - MiniSO8
Standby
Bypass
VIN+
VIN-
1
2
3
4
8 VOUT2
7 GND
6 VCC
5 VOUT1
TS4871ID-TS4871IDT - SO8
Standby
Bypass
VIN+
VIN-
1
2
3
4
8 VOUT2
7 GND
6 VCC
5 VOUT1
TS4871IQT - DFN8
STANDBY 1
BYPASS 2
VIN+ 3
VIN- 4
8 VOUT 2
7 GND
6 Vcc
5 VOUT 1
TYPICAL APPLICATION SCHEMATIC
Audio
Input
Rin
Cin
Cfeed
Rfeed Vcc
6
4 Vin- -
3 Vin+ +
Vcc
Rstb
2 Bypass
1 Standby
Bias
Cb
7
Cs
Vout1 5
-
Av=-1
+
Vout2 8
RL
8 Ohms
TS4871
1/28

TS4871
TS4871
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
VCC
Vi
Toper
Tstg
Tj
Rthja
Supply voltage 1)
Input Voltage 2)
Operating Free Air Temperature Range
Storage Temperature
Maximum Junction Temperature
Thermal Resistance Junction to Ambient 3)
SO8
MiniSO8
QNF8
Pd Power Dissipation
ESD Human Body Model
ESD Machine Model
Latch-up Latch-up Immunity
Lead Temperature (soldering, 10sec)
1. All voltages values are measured with respect to the ground pin.
2. The magnitude of input signal must never exceed VCC + 0.3V / GND - 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, involves abnormal operating condition.
Value
6
GND to VCC
-40 to + 85
-65 to +150
150
175
215
70
Internally Limited4)
2
200
Class A
260
OPERATING CONDITIONS
Symbol
Parameter
Value
VCC Supply Voltage
2.5 to 5.5
VICM Common Mode Input Voltage Range
GND to VCC - 1.2V
VSTB
RL
Standby Voltage Input :
Device ON
Device OFF
Load Resistor
GND VSTB 0.5V
VCC - 0.5V VSTB VCC
4 - 32
Rthja
Thermal Resistance Junction to Ambient 1)
SO8
MiniSO8
DFN8 2)
150
190
41
1. This thermal resistance can be reduced with a suitable PCB layout (see Power Derating Curves Fig. 20)
2. When mounted on a 4 layers PCB
Unit
V
V
°C
°C
°C
°C/W
kV
V
°C
Unit
V
V
V
°C/W
2/28


Features TS4871 OUTPUT RAIL TO RAIL 1W AUDIO POWE R AMPLIFIER WITH STANDBY MODE s OPERATI NG FROM VCC = 2.5V to 5.5V s 1W RAIL TO RAIL OUTPUT POWER @ Vcc=5V, THD=1%, f= 1kHz, with 8Ω Load MODE (10nA) PIN CO NNECTIONS (Top View) TS4871IST - MiniSO 8 1 2 3 4 8 7 6 5 s ULTRA LOW CONSUMPT ION IN STANDBY Standby Bypass VIN+ VINV OUT2 GND VCC VOUT1 s 75dB PSRR @ 217Hz from 5V to 2.6V s ULTRA LOW POP & CLIC K s ULTRA LOW DISTORTION (0.1%) s UNITY GAIN STABLE s AVAILABLE IN SO8, MiniSO 8 & DFN8 3x3mm DESCRIPTION TS4871ID-TS 4871IDT - SO8 Standby 1 2 3 4 8 7 6 5 VOUT2 GND VCC VOUT1 The TS4871 is a n Audio Power Amplifier capable of deli vering 1W of continuous RMS Ouput Power into 8Ω load @ 5V. This Audio Amplif ier is exhibiting 0.1% distortion level (THD) from a 5V supply for a Pout = 25 0mW RMS. An external standby mode contr ol reduces the supply current to less t han 10nA. An internal thermal shutdown protection is also provided. The TS4871 has been designed for high quality audio applications such as mobi.
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