TS4994FC Datasheet, PDF (1/35 Pages) STMicroelectronics – 1.2 W differential input/output audio power amplifier with selectable standby

TS4994FC
1.2 W 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 V_CC = 2.5V to 5.5V
■ 1.2W rail-to-rail output power @ V_CC = 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 9-bump flip-chip (300mm bump
diameter)
■ Lead-free package
TS4994EIJT - Flip-chip (9 bumps)
Gnd
V_O-
7
6
5 ^V_O+
Bypass _{8 9 4} Stdby
V_{IN+ 1}
2
3 ^V_IN-
V_CC Stdby Mode
The device is equipped with common mode
feedback circuitry allowing outputs to be always
biased at V_CC/2 regardless of the input common
mode voltage.
Description
The TS4994 is an audio power amplifier capable
of delivering 1W of continuous RMS output power
into an 8Ω load @ 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. An internal thermal shutdown protection
is also provided, making the device capable of
sustaining short-circuits.
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
Part number
Temperature range
Package
Packaging
Marking
TS4994EIKJT
-40°C, +85°C
FC9 with back
coating
Tape & reel
A94
TS4994EIJT
Lead free flip-chip9
A94
December 2006
Rev 2
1/35
www.st.com
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