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TS4994IST Scheda tecnica(PDF) 1 Page - STMicroelectronics

Il numero della parte TS4994IST
Spiegazioni elettronici  1W Differential Input/Output Audio Power Amplifier with Selectable Standby
PDF  31 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TS4994IST Scheda tecnica(HTML) 1 Page - STMicroelectronics

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April 2005
Revision 4
1/31
■ Differential inputs
■ Near zero pop & click
■ 100dB PSRR @ 217Hz with grounded inputs
■ Operating from V
CC = 2.5V to 5.5V
■ 1W RAIL to RAIL output power @ Vcc=5V,
THD=1%, F=1kHz, with 8
Ω 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 8
Ω 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)
Applications
■ Mobile phones (cellular / cordless)
■ Laptop / notebook computers
■ PDAs
■ Portable audio devices
■
■
Order Codes
TS4994IQT - DFN10
1
2
3
4
5
10
9
8
7
6
V
IN -
V
O+
STBY
V
DD
V
IN +
STBY MODE
BYPASS
V
O-
GND
N/C
1
2
3
4
5
1
2
3
4
5
10
9
8
7
6
10
9
8
7
6
V
IN -
V
O+
STBY
V
DD
V
IN +
STBY MODE
BYPASS
V
O-
GND
N/C
TS4994IST - MiniSO8
4
3
2
1
V
IN+
V
IN-
V
O+
GND
Vcc
V
O-
BYPASS
5
6
7
8
STBY
4
3
2
1
V
IN+
V
IN-
V
O+
GND
Vcc
V
O-
BYPASS
5
6
7
8
STBY
Part Number
Temperature Range
Package
Packaging
Marking
TS4994IQT
-40°C to +85°C
DFN10
Tape & Reel
K994
TS4994IST
-40°C to +85°C
MiniSO8
Tape & Reel
K994
1W Differential Input/Output Audio Power Amplifier
with Selectable Standby
TS4994


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