|
|
PDF TS4994 Data sheet ( Hoja de datos )
| Número de pieza | TS4994 | |
| Descripción | 1W Differential Input/Output Audio Power Amplifier | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de TS4994 (archivo pdf) en la parte inferior de esta página. Total 31 Páginas | ||
|
No Preview Available !
www.DataSheet4U.com
TS4994
1W Differential Input/Output Audio Power Amplifier
with Selectable Standby
■ Differential inputs
■ Near zero pop & click
■ 100dB PSRR @ 217Hz with grounded inputs
■ Operating from VCC = 2.5V to 5.5V
■ 1W RAIL to RAIL output power @ Vcc=5V,
THD=1%, F=1kHz, with 8Ω load
■ 90dB CMRR @ 217Hz
■ Ultra-low consumption in standby mode (10nA)
■ Selectable standby mode (active low or
active high
■ Ultra fast startup time: 15ms typ.
■ Available in DFN10 3x3, 0.5mm pitch &
MiniSO8
■ All lead-free packages
Description
The TS4994 is an audio power amplifier capable
of delivering 1W of continuous RMS output power
into an 8Ω load @ 5V. Thanks to its differential
inputs, it exhibits outstanding noise immunity.
An external standby mode control reduces the
supply current to less than 10nA. A STBY MODE
pin allows the standby pin to be active HIGH or
LOW (except in the MiniSO8 version). An internal
thermal shutdown protection is also provided,
making the device capable of sustaining short-
circuits.
The device is equipped with Common Mode
Feedback circuitry allowing outputs to be always
biased at Vcc/2 regardless of the input common
mode voltage.
The TS4994 has been designed for high quality
audio applications such as mobile phones and
requires few external components.
Pin Connections (top view)
TS4994IQT - DFN10
STBY 1
VIN -
STBY MODE
2
3
VIN + 4
BYPASS 5
10 VO+
9 VDD
8 N/C
7 GND
6 VO-
TS4994IST - MiniSO8
STBY
VIN-
VIN+
BYPASS
1
2
3
4
8 VO+
7 Vcc
6 GND
5 VO-
Applications
■ Mobile phones (cellular / cordless)
■ Laptop / notebook computers
■ PDAs
■ Portable audio devices
■
■
Order Codes
Part Number
TS4994IQT
TS4994IST
Temperature Range
-40°C to +85°C
-40°C to +85°C
Package
DFN10
MiniSO8
Packaging
Tape & Reel
Tape & Reel
Marking
K994
K994
April 2005
Revision 4
1/31
1 page  
Electrical Characteristics
TS4994
Table 4. Electrical Characteristics: VCC = +3.3V (all electrical values are guaranteed with correlation
measurements at 2.6V and 5V) GND = 0V, Tamb = 25°C (unless otherwise specified)
Symbol
Parameter
Min. Typ.
Max.
ICC Supply Current No input signal, no load
ISTANDBY
Standby Current
No input signal, Vstdby = VSM = GND, RL = 8Ω
No input signal, Vstdby = VSM = VCC, RL = 8Ω
Voo
Differential Output Offset Voltage
No input signal, RL = 8Ω
VICM
Input Common Mode Voltage
CMRR ≤ -60dB
Po
Output Power
THD = 1% Max, F= 1kHz, RL = 8Ω
THD + N
Total Harmonic Distortion + Noise
Po = 300mW rms, Av = 1, 20Hz ≤ F ≤ 20kHz, RL = 8Ω
PSRRIG
Power Supply Rejection Ratio with Inputs Grounded1
F = 217Hz, R = 8Ω, Av = 1, Cin = 4.7µF, Cb =1µF
Vripple = 200mVPP
CMRR
Common Mode Rejection Ratio
F = 217Hz, RL = 8Ω, Av = 1, Cin = 4.7µF, Cb =1µF
Vic = 200mVPP
SNR
Signal-to-Noise Ratio (A Weighted Filter, Av = 2.5)
(RL = 8Ω, THD +N < 0.7%, 20Hz ≤ F ≤ 20kHz)
GBP
Gain Bandwidth Product
RL = 8Ω
Output Voltage Noise, 20Hz ≤ F ≤ 20kHz, RL = 8Ω
Unweighted, Av = 1
A weighted, Av = 1
Unweighted, Av = 2.5
VN A weighted, Av = 2.5
Unweighted, Av = 7.5
A weighted, Av = 7.5
Unweighted, Standby
A weighted, Standby
TWU
Wake-Up Time2
Cb =1µF
37
10 1000
0.1 10
0.6 VCC- 0.9
300 380
0.5
100
90
100
2
6
5.5
12
10.5
33
28
1.5
1
15
1) Dynamic measurements - 20*log(rms(Vout)/rms (Vripple)). Vripple is the super-imposed sinus signal relative to Vcc.
2) Transition time from standby mode to fully operational amplifier.
Unit
mA
nA
mV
V
mW
%
dB
dB
dB
MHz
µVRMS
ms
5/31
5 Page 
Electrical Characteristics
Figure 27. PSRR vs. frequency
0
-10 Vcc = 2.6V
-20 Vripple = 200mVpp
-30 Inputs = Grounded
-40
Av = 2.5, Cin = 4.7µF
RL ≥ 8Ω
-50 Tamb = 25°C
Cb=0.1µF
-60 Cb=0.47µF
-70 Cb=1µF
-80
-90
-100
-110
-120
20
100 1000
Frequency (Hz)
Cb=0
10000 20k
Figure 28. PSRR vs. frequency
0
-10 Vcc = 5V
-20 Vripple = 200mVpp
-30 Inputs = Floating
Rfeed = 20kΩ
-40 RL ≥ 8Ω
-50 Tamb = 25°C
Cb=0.1µF
-60 Cb=0.47µF
-70
-80 Cb=1µF
-90
-100
-110
Cb=0
-120
20
100 1000
Frequency (Hz)
10000 20k
Figure 29. PSRR vs. frequency
0
-10 Vcc = 3.3V
-20 Vripple = 200mVpp
-30 Inputs = Floating
Rfeed = 20kΩ
-40 RL ≥ 8Ω
-50 Tamb = 25°C
Cb=0.1µF
-60 Cb=0.47µF
-70
-80 Cb=1µF
-90
-100
-110
Cb=0
-120
20
100 1000
Frequency (Hz)
10000 20k
TS4994
Figure 30. PSRR vs. frequency
0
-10 Vcc = 2.6V
-20 Vripple = 200mVpp
-30 Inputs = Floating
Rfeed = 20kΩ
-40 RL ≥ 8Ω
-50 Tamb = 25°C
Cb=0.1µF
-60 Cb=0.47µF
-70
-80 Cb=1µF
-90
-100
-110
Cb=0
-120
20
100 1000
Frequency (Hz)
10000 20k
Figure 31. PSRR vs. common mode input
voltage
0
Vcc = 5V
Vripple = 200mVpp
-20 Inputs Grounded
F = 217Hz
-40 Av = 1
RL ≥ 8Ω
Tamb = 25°C
-60
Cb=0
-80
Cb=1µF
Cb=0.47µF
Cb=0.1µF
-100
0
1234
Common Mode Input Voltage (V)
5
Figure 32. PSRR vs. common mode input
voltage
0 Vcc = 3.3V
Vripple = 200mVpp
Inputs Grounded
-20 F = 217Hz
Av = 1
-40 RL ≥ 8Ω
Tamb = 25°C
-60
Cb=0
-80
Cb=1µF
Cb=0.47µF
Cb=0.1µF
-100
0.0
0.6 1.2 1.8 2.4
Common Mode Input Voltage (V)
3.0
11/31
11 Page | ||
| Páginas | Total 31 Páginas | |
| PDF Descargar | [ Datasheet TS4994.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| TS4990 | 1W AUDIO POWER AMPLIFIER WITH ACTIVE LOW STANDBY MODE | STMicroelectronics |
| TS4994 | 1W Differential Input/Output Audio Power Amplifier | STMicroelectronics |
| TS4995 | 1.2 W fully differential audio power amplifier | STMicroelectronics |
| TS4997 | 2 x 1W differential input stereo audio amplifier | STMicroelectronics |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |