Inside: Showcase (Volume 29) is available in HTML and PDF format. - 330KB
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Low-voltage audio power amp family
Product features
The latest family in TI’s broad line of linear audio power amplifiers (APAs) includes the TPA102, TPA112, TPA122 and TPA152. All four devices are designed for stereo headphone applications in portableequipment including notebook computers, voice recorders and CD players.
Extensive hardware and software support tools are available for all TI APAs. TPA1x2 EVMs and other design tools can be ordered or downloaded from TI’s web site.
The TPA102, TPA112 and TPA122 are available in both 8-pin MSOP packages. The TPA112, TPA122, and TPA152 are available in 8-pin SOIC packages.
Vol 29 November, 1998 |
| Audio power amplifier selection guide | ||||||||
| Device | Description | THD+N (%) |
VCC/VDD (V) |
ICC/IDD (mA) |
PSRR (dB, 1 kHz) |
Shutdown control |
Packages | |
| typ | min | max | typ | typ | ||||
| TPA102 | 150 mW stereo, SE | 0.1 | 2.5 | 5.5 | 1.5 | 76 |  |
8-pin MSOP |
| TPA112 | 150 mW stereo, SE | 0.1 | 2.5 | 5.5 | 1.5 | 76 | |
8-pin SOIC/MSOP |
| TPA122 | 150 mW stereo, SE | 0.1 | 2.5 | 5.5 | 1.5 | 76 | |
8-pin SOIC/MSOP |
| TPA152 | 75 mW stereo, SE | 0.005 | 2 | 5.5 | 5.5 | 81 | 8-pin SOIC | |
Each device features a different pinout providing maximum versatility in any layout. In addition, the TPA152, TPA102,
and TPA122 have mid-rail generator circuitry that minimizes component count by internally biasing the reference voltage. The need for an external voltage divider is eliminated to save time, board space and money.
The TPA152 is a hi-fi device that delivers 75 mW to a 32-
load with less than 0.01 percent THD+N across the entire audio frequency band. Its hi-fi quality is ideal in output buffer applications for audio CODECs in PCs as well as head-phone driver sockets.
