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Product Detailed Parameters
- Description：2-W, MONO, ANALOG INPUT CLASS-D
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Class D
- Output Type：1-Channel (Mono)
- Max Output Power x Channels @ Load：1.7W x 1 @ 8Ohm
- Voltage - Supply：2.5V ~ 5.2V
- Features：-
- Mounting Type：Surface Mount
- Supplier Device Package：16-DSBGA (2x2)
- Package / Case：16-UFBGA, DSBGA
- Operating Temperature：-40°C ~ 85°C
- Grade：-
- Qualification：-
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Overview
The SN012020YZHR is a mono Class-D audio power amplifier manufactured by Texas Instruments, functionally equivalent to the TPA2015D1. It features an integrated adaptive boost converter and SpeakerGuard AGC technology for battery tracking. The device delivers up to 2 W into an 8 Ω load from a 3.6 V supply with 6% THD. Operating voltage ranges from 2.5 V to 5.2 V, with a typical quiescent current of 1.7 mA at 3.6 V. It includes thermal and short-circuit protection with auto-recovery.
Feature Summary
- Integrates an adaptive boost converter that activates automatically based on output signal amplitude to maximize efficiency at low power levels.
- Includes built-in SpeakerGuard AGC technology that monitors battery voltage and limits peak supply current to prevent clipping and extend battery life.
- Utilizes a fully differential architecture to improve RF immunity and eliminate the need for mid-supply bypass capacitors.
Applications
- Cell phones
- Portable electronics
- GPS devices
Procurement Notes
Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct package and tape-and-reel specifications. Confirm that the SN012020 designation aligns with the intended application requirements and matches the TPA2015D1 functional parameters. Cross-reference the datasheet revision history for any updates regarding pin configurations or electrical characteristics before finalizing procurement.
Selection Notes
Select this component for applications requiring high efficiency in space-constrained portable devices. The integrated boost converter allows for higher output power compared to non-boosted solutions. Ensure the design accommodates the 1.954 mm x 1.954 mm DSBGA package dimensions. Verify that the system supports the required gain settings and AGC configuration options available through external resistor connections.
Part Context
This part belongs to the TPA2015D1 family of constant output power Class-D amplifiers. It is designed specifically for mobile phone and portable speaker applications where battery life and audio quality are critical. The device shares pin compatibility with the TPA2013D1, facilitating potential design upgrades or replacements within existing hardware architectures.
Replacement Considerations
The SN012020 is a variant of the TPA2015D1. Verify pin-to-pin compatibility with the TPA2013D1 if upgrading from previous designs. Ensure that any substitute components match the 16-ball DSBGA package size and electrical specifications outlined in the official datasheet.
FAQ
How does the SpeakerGuard AGC function protect the speaker?
SpeakerGuard AGC decreases the amplifier gain when the output audio signal exceeds a limiter level, which prevents heavy clipping and limits peak battery current consumption.
What is the purpose of the adaptive boost converter in this device?
The adaptive boost converter increases efficiency at low output power by activating only when the peak output audio signal exceeds a preset voltage threshold, generating a higher supply voltage for the Class-D amplifier.
