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TS4994IST Datasheet(PDF) 1 Page - STMicroelectronics

Part # TS4994IST
Description  1W differential input/output audio power amplifier with selectable standby
PDF  35 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TS4994IST Datasheet(HTML) 1 Page - STMicroelectronics

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December 2006
Rev 6
1/35
35
TS4994
1W differential input/output audio power amplifier
with selectable standby
Features
■ Differential inputs
■ Near-zero pop & click
■ 100dB PSRR @ 217Hz with grounded inputs
■ Operating range from VCC = 2.5V to 5.5V
■ 1W rail-to-rail output power @ VCC =5V,
THD = 1%, F = 1kHz, with 8
Ωload
■ 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) &
MiniSO-8
■ All lead-free packages
Description
The TS4994 is an audio power amplifier capable
of delivering 1W of continuous RMS output power
into an 8
Ωload @ 5V. Due to its differential inputs,
it exhibits outstanding noise immunity.
An external standby mode control reduces the
supply current to less than 10nA. An STBY
MODE pin allows the standby to be active HIGH
or LOW (except in the MiniSO-8 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 is designed for high quality audio
applications such as mobile phones and requires
few external components.
Applications
■ Mobile phones (cellular / cordless)
■ Laptop / notebook computers
■ PDAs
■ Portable audio devices
Order codes
TS4994IQT - DFN10
Pin connections (top view)
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
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
TS4994IST - MiniSO-8
Part number
Temperature range
Package
Packing
Marking
TS4994IQT
-40°C to +85°C
DFN10
Tape & reel
K994
TS4994IST
MiniSO-8
K994
www.st.com


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