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PDF TS4973 Data sheet ( Hoja de datos )
| Número de pieza | TS4973 | |
| Descripción | 1.2W TWO AUDIO INPUTS WITH GAIN CONTROL POWER AMPLIFIER WITH STANDBY MODE ACTIVE LOW | |
| Fabricantes | STMicroelectronics | |
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TS4973
1.2W TWO AUDIO INPUTS WITH GAIN CONTROL POWER
AMPLIFIER WITH STANDBY MODE ACTIVE LOW
s OPERATING FROM VCC = 2.8V to 5.5V
s RAIL TO RAIL OUTPUT
s 1.2W OUTPUT POWER @ Vcc=5V, THD=1%,
F=1kHz, with 8Ω Load
s ULTRA LOW CONSUMPTION IN STANDBY
MODE (10nA)
s 53dB PSRR @ 217Hz from 2.8 to 5V
s LOW POP & CLICK
s ULTRA LOW DISTORTION (0.05%)
s GAIN SETTINGS PIN : GS
s UNITY GAIN STABLE
s FLIP CHIP PACKAGE 9 x 300µm bumps
DESCRIPTION
ADVANCE DATA
PIN CONNECTIONS (top view)
TS4973IJT - FLIP CHIP
Vin2
VCC
STBY
VOUT1
GS
VOUT2
Vin1
GND
BYPASS
At 3.3v, the TS4973 is an Audio Power Amplifier
capable of delivering 400mW of continuous RMS
ouput power into a 8Ω bridged-tied loads with 1%
THD+N, and 30mW( typ ) per channel of continu-
ous average power into stereo 32Ω BTL loads with
0.5% THD+N from 20Hz to 20kHz. An external
standby mode control reduces the supply current
to less than 10nA. An internal over-temperature
shutdown protection is provided.
The TS4973 has been designed for high quality
audio applications such as mobile phones and to
minimize the number of external components. It
has two inputs which can be used to switch the
gain between 6dB ( internal ) or a user’s adjust-
able gain setting with one external resitance.
TYPICAL APPLICATION SCHEMATIC
APPLICATIONS
s Mobile Phones (Cellular / Cordless)
s PDAs
s Laptop/Notebook computers
s Portable Audio Devices
ORDER CODE
Part
Number
TS4973IJT
Temperature Package
Range
J
-40, +85°C
•
Marking
A73
VCC
Audio
Inputs
Cin1 Rin
1
In1
Cin2
Gain Setting level
threshold = 0.9V
7 In2
9 Gain Setting
6
Standby level
threshold = 0.9V
3 Bypass
5 Standby Bias
-
+
-
AV = -1
+
Cb
2
Cs
Vout 1 8
Vout 2 4
TS4973
J = Flip Chip Package - only available in Tape & Reel (JT))
February 2003
This is a preliminary information on a new product now in development. Details are subject to change without notice.
RL
8 Ohms
1/9
1 page  
TS4973
ELECTRICAL CHARACTERISTICS
VCC = 2.8V, GND = 0V, Tamb = 25°C (unless otherwise specified)
Symbol
Parameter
Min. Typ. Max. Unit
ICC
Supply Current
No input signal, no load
5.5
ISTANDBY
Standby Current 1)
No input signal, Vstdby = Vcc, RL = 8Ω
10
Voo
Output Offset Voltage
No input signal, RL = 8Ω
5
BTL GAIN
GS = Low
input signal Vin = 100mV rms, RL = 8Ω
5.6 6
Po
Output Power
THD = 1% Max, f = 1kHz, RL = 8Ω
250 350
THD + N
Total Harmonic Distortion + Noise
Po = 200mW rms, Gv = 2, 20Hz < f < 20kHz, RL = 8Ω
0.1
PSRR
Power Supply Rejection Ratio2)
F = 217Hz, RL = 8Ω, GS = Low, Vripple = 200mV rms
Input Grounded, Cin = 220nF, Cb = 1µF
50 53
PSRR
Power Supply Rejection Ratio3)
F = 217Hz, RL = 8Ω, GS = Low, Vripple = 200mV rms
Input Floating, Cb = 1µF
75
Zin
Input Impedance
GS = Low
37.5
50
Rfeed Internal Feedback Resistor
37.5
50
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 Gnd
2. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is an added sinus signal to Vcc @ F = 217Hz
3. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is an added sinus signal to Vcc @ F = 217Hz
8
1000
20
6.4
62.5
62.5
mA
nA
mV
dB
mW
%
dB
dB
KΩ
KΩ
Degrees
dB
MHz
5/9
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet TS4973.PDF ] | |
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