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Product Detailed Parameters
- Description：TPA102 150-MW STEREO AUDIO POWER
- Series：-
- Mfr：Burr Brown
- Package：Bulk
- Type：Class AB
- Output Type：Headphones, 2-Channel (Stereo)
- Max Output Power x Channels @ Load：70mW x 2 @ 8Ohm
- Voltage - Supply：2.5V ~ 5.5V
- Features：Depop, Short-Circuit and Thermal Protection, Shutdown
- Mounting Type：Surface Mount
- Supplier Device Package：8-MSOP-PowerPad
- Package / Case：8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Operating Temperature：-40°C ~ 85°C (TA)
- Grade：-
- Qualification：-
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Overview
The TPA102DGN is a stereo audio power amplifier in an 8-pin PowerPAD MSOP package. It delivers 150 mW per channel into 8-ohm loads at 5 V and 70 mW at 3.3 V. The supply voltage range is 2.5 V to 5.5 V. THD+N is less than 2% across the 20 Hz to 20 kHz band at 5 V with an 8-ohm load. Supply current is typically 3 mA, dropping to 50 µA in shutdown mode. The device includes internal mid-rail generation, pop reduction circuitry, and thermal/short-circuit protection.
Feature Summary
- Stereo output capability delivering continuous RMS power per channel
- Internal mid-rail bias generation eliminates external bias components
- Pop reduction circuitry minimizes audible transients during startup and shutdown
- Integrated thermal and short-circuit protection safeguards operation
Applications
- Portable digital radios
- PC multimedia systems
- Battery-powered consumer electronics
Procurement Notes
Verify the specific ordering suffix against the manufacturer's packaging data sheet. The DGN suffix indicates an HVSSOP package available in tube or tape-and-reel formats. Confirm RoHS compliance status and lead finish specifications for your assembly process. Ensure the selected variant matches the required quantity carrier type.
Selection Notes
Select this component for low-voltage stereo applications requiring minimal external passive components. The high input impedance simplifies gain setting via external resistors. Consider the 8-pin PowerPAD MSOP package for its thermal dissipation capabilities in compact designs. Verify that the load impedance and supply voltage align with the specified performance curves.
Part Context
This part belongs to the Texas Instruments TPA102 family of stereo audio amplifiers. It is pin-compatible with the LM4881, facilitating direct upgrades or replacements in existing designs. The device utilizes CMOS technology to achieve high efficiency and low noise performance suitable for portable audio equipment.
Replacement Considerations
The datasheet explicitly states the TPA102 is pin-compatible with the LM4881. Designers may consider the LM4881 as a verified substitute if sourcing constraints exist, provided electrical parameters meet the application requirements.
