Inside

Video solutions for PC platforms

Fastest low power, 10-bit, 1.25-MSPS serial ADC

GPLynx simplifies 1394 implementation

Single-chip, 900 MHz RF downcoverter

900-MHz RF transmit driver extends system performance

350-mW low-voltage audio amplifiers

First 2-W stereo audio amplifier sytems with depop circuitry

Highest-bandwidth low-voltage rail-to-rail CMOS op amp

High-speed wide supply voltage op amp

TCM38C17 QCombo Quad-Channel PCM Codec/Filter Combo

New amplifiers data book now available

CD now stands for changing data

First 2-W stereo audio amplifier system with depop circuitry

Drives 3- loads

Product Features

• High output power:
  2 W @ 5 V, 3
• Depop circuitry
• THD+N: < 0.05% @ 1.5 W, 4
• Power-saving shutdown mode (I_DD < 5 µA)
• SE/BTL switch
• Stereo MUX
• Characterized for operation from –20°C to 85°C

The TPA0202 is a complete audio amplifier solution, offering both stereo speaker and headphone drive in a TSSOP PowerPAD package. Building on the success of the TPA0102, the second generation TPA0202 is bound to make some waves. This device features greater output power, integrated depop circuitry, ultra-low THD+N, and the thermally enhanced TSSOP PowerPAD package, a hallmark of TIs audio power amplifier solutions.

The TPA0202 is capable of delivering 2 W of continuous average power per channel to 3- loads, 33% more than the TPA0102. This extra drive capability combined with the SE/BTL switch make this amplifier ideal for applications with low-impedance speakers in high-end notebook computers. The SE/BTL switch is a feature which allows the amplifier to operate single-ended (SE) for driving headphones, or in bridge-tied load (BTL) for driving speakers. To prolong battery life, power consumption is minimized when supply current drops to 5 µA in shutdown mode. The integrated depop circuitry makes this transition virtually transparent by eliminating unwanted speaker noise. Keeping the designer in mind, the TPA0202 has an integrated MUX which can switch the amplifier inputs between two sets of pins. The MUX is intended to work in unison with the SE/BTL switch to provide the designer with the capability of using two different feedback networks. One network could be arranged to provide the best possible sound for headphones while the other is utilized for speakers.

The TPA0202 is available in TI's ultra-thin PowerPAD package which can disperse over 2.5 W of power with zero air flow, more than any surface mount package.

PowerPAD Technical Brief:
http://www.ti.com/sc/docs/psheets/appnote.htm

TPA0202 - Mini Datasheet
VDD = 5.0 V
VDD = 3.3 V
Output Power (RMS @ 3 )	SE	250	600	mW/Ch
	BTL	750	2000	mW/Ch
Supply Current (IDD)	SE	3.0	9.0	mA
	BTL	13.0	19.0	mA
Total Harmonic Distortion (THD+N)		1.0	1.0	%
Power Supply Ripple Rejection (PSRR)		55	60	dB

• TPA0202PWPLE