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TS4994IST View Datasheet(PDF) - STMicroelectronics

Part Name
Description
Manufacturer
TS4994IST Datasheet PDF : 31 Pages
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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 8load
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 8load @ 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 - 2
STBY MODE 3
VIN + 4
BYPASS 5
10 VO+
9 VDD
8 N/C
7 GND
6 VO-
TS4994IST - MiniSO8
STBY
1
VIN-
2
VIN+
3
BYPASS
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
 

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