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TS4994IQT データシート(PDF) 1 Page - Texas Instruments

部品番号 TS4994IQT
部品情報  1W differential input/output audio power amplifier with selectable standby
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メーカー  TI [Texas Instruments]
ホームページ  http://www.ti.com
Logo TI - Texas Instruments

TS4994IQT データシート(HTML) 1 Page - Texas Instruments

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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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