LM4702CTA Datasheet, PDF (1/20 Pages) Texas Instruments – LM4702 Audio Power Amplifier Series Stereo High Fidelity 200 Volt Driver with Mute

LM4702
www.ti.com
SNAS328I – AUGUST 2005 – REVISED APRIL 2013
LM4702 Audio Power Amplifier Series Stereo High Fidelity 200 Volt Driver with Mute
Check for Samples: LM4702
FEATURES
1
•2 Very High Voltage Operation
• Scalable Output Power
• Minimum External Components
• External Compensation
• Thermal Shutdown and Mute
APPLICATIONS
• AV Receivers
• Audiophile Power Amps
• Pro Audio
• High Voltage Industrial Applications
KEY SPECIFICATIONS
• Wide operating voltage range:
– LM4702A ⁽¹⁾ (in development):
±20V to ±100V
– LM4702B: ±20V to ±100V
– LM4702C: ±20V to ±75V
• Equivalent Noise: 3μV
• PSRR: 110dB (typ)
• THD+N (A and B Grades): 0.0003%
(1) Tentative Max Operating voltage for the LM4702A (in
development).
DESCRIPTION
The LM4702 is a high fidelity audio power amplifier
driver designed for demanding consumer and pro-
audio applications. Amplifier output power may be
scaled by changing the supply voltage and number of
output devices. The LM4702 is capable of delivering
in excess of 300 watts per channel single ended into
an 8 ohm load in the presence of 10% high line
headroom and 20% supply regulation.
The LM4702 includes thermal shut down circuitry that
activates when the die temperature exceeds 150°C.
The LM4702's mute function, when activated, mutes
the input drive signal and forces the amplifier output
to a quiescent state.
The LM4702 is available in 3 grades that span a wide
range of applications and performance levels. The
LM4702C is targeted at high volume applications.
The LM4702B includes a higher voltage rating along
with the tighter specifications. The LM4702A⁽¹⁾ (in
development) is the premium part with the highest
voltage rating, fully specified with limits over voltage
and temperature, and is offered in a military 883
compliant TO-3 package.
1
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2
UNLESS OTHERWISE NOTED this document contains
PRODUCTION DATA information current as of publication date.
Products conform to specifications per the terms of Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2005–2013, Texas Instruments Incorporated