MAX98357A
PRODUCTIONTiny, Low-Cost, PCM Class D Amplifier with Class AB Performance
Supports I2S and 8-Channel TDM Data
- Part Models
- 6
- 1ku List Price
- Starting From $1.14
Part Details
- Single-Supply Operation (2.5V to 5.5V)
- 3.2W Output Power into 4Ω at 5V
- 2.4mA Quiescent Current
- 92% Efficiency (RL = 8Ω, POUT = 1W)
- 22.8µVRMS Output Noise (AV = 15dB)
- Low 0.013% THD+N at 1kHz
- No MCLK Required
- Sample Rates of 8kHz to 96kHz
- Supports Left, Right, or (Left/2 + Right/2) Output
- Sophisticated Edge Rate Control Enables Filterless Class D Outputs
- 77dB PSRR at 1kHz
- Low RF Susceptibility Rejects TDMA Noise from GSM Radios
- Extensive Click-and-Pop Reduction Circuitry
- Robust Short-Circuit and Thermal Protection
- Available in Space-Saving Packages: 1.345mm x 1.435mm WLP (0.4mm Pitch) and 3mm x 3mm TQFN
- Solution Size with Single Bypass Capacitor is4.32mm2
For improved performance, functionality, and even lower power consumption Maxim Integrated recommends the MAX98360.
The MAX98357A/MAX98357B is an easy-to-use, low-cost, digital pulse-code modulation (PCM) input Class D amplifier that provides industry-leading Class AB audio performance with Class D efficiency. The digital audio interface automatically recognizes up to 35 different PCM and TDM clocking schemes which eliminates the need for I2C programming. Operation is further simplified by eliminating the need for an external MCLK signal that is typically used for PCM communication. Simply supply power, LRCLK, BCLK, and digital audio to generate audio! Furthermore, a novel pinout allows customers to use the cost-effective WLP package with no need for expensive vias (refer to Application Note 6643: Optimize Cost, Size, and Performance with MAX98357 WLP for more information).
The digital audio interface is highly flexible with the MAX98357A supporting I2S data and the MAX98357B supporting left-justified data. Both ICs support 8 channel time division multiplexed (TDM) data. The digital audio interface accepts specified sample rates between 8kHz and 96kHz for all supported data formats. The ICs can be configured to produce a left channel, right channel, or (left/2 + right/2) output from the stereo input data. The ICs operate using 16/24/32-bit data for I2S and left-justified modes as well as 16-bit or 32-bit data using TDM mode. The ICs eliminate the need for the external MCLK signal that is typically used for PCM communication. This reduces EMI and possible board coupling issues in addition to reducing the size and pin count of the ICs.
The ICs also feature a very high wideband jitter tolerance (12ns typ) on BCLK and LRCLK to provide robust operation.
Active emissions-limiting, edge-rate limiting, and overshoot control circuitry greatly reduce EMI. A filterless spread-spectrum modulation scheme eliminates the need for output filtering found in traditional Class D devices and reduces the component count of the solution.
The ICs are available in 9-pin WLP (1.345mm x 1.435mm x 0.64mm) and 16-pin TQFN (3mm x 3mm x 0.75mm) packages and are specified over the -40°C to +85°C temperature range.
Applications
- Cameras
- Gaming Devices (Audio and Haptics)
- IoT Devices
- Notebook Computers
- Single Li-ion Cell/5V Devices
- Smart Speakers
- Smartphones
- Tablets
There is a newer version of this part available
Tiny, Cost-Effective, 14V Plug-and-Play Digital Class-D Amplifier
Documentation
Data Sheet 1
Design Note 1
Technical Articles 1
Video 1
Device Drivers 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| MAX98357AETE+ | Thin Quad Flatpack, No Leads | ||
| MAX98357AETE+T | Thin Quad Flatpack, No Leads | ||
| MAX98357AEWL+ | Wafer-Level Package 3x3 Bump, Full Array | ||
| MAX98357AEWL+T | Wafer-Level Package 3x3 Bump, Full Array | ||
| MAX98357AGTE/V+ | Thin Quad Flatpack, No Leads | ||
| MAX98357AGTE/V+T | Thin Quad Flatpack, No Leads |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Sep 17, 2018 - 1789 WAFER FAB |
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| MAX98357AETE+ | PRODUCTION | |
| MAX98357AETE+T | PRODUCTION | |
| MAX98357AEWL+ | PRODUCTION | |
| MAX98357AEWL+T | PRODUCTION | |
|
Aug 2, 2018 - 1682A ASSEMBLY |
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| MAX98357AETE+ | PRODUCTION | |
| MAX98357AETE+T | PRODUCTION | |
|
Jan 9, 2018 - 1620 WAFER FAB |
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| MAX98357AETE+ | PRODUCTION | |
| MAX98357AETE+T | PRODUCTION | |
| MAX98357AEWL+ | PRODUCTION | |
| MAX98357AEWL+T | PRODUCTION | |
|
Jun 20, 2016 - 1612 ASSEMBLY |
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| MAX98357AETE+ | PRODUCTION | |
| MAX98357AETE+T | PRODUCTION | |
|
Aug 1, 2014 - 1436 ELECTRICAL DATASHEET |
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| MAX98357AETE+ | PRODUCTION | |
| MAX98357AETE+T | PRODUCTION | |
|
Jul 19, 2016 - 1594_AMENDED ASSEMBLY |
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| MAX98357AEWL+T | PRODUCTION | |
|
Dec 8, 2015 - 1594_PRE-PCN WAFER FAB |
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| MAX98357AEWL+T | PRODUCTION | |
|
Jun 18, 2021 - 2161 ASSEMBLY |
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| MAX98357AGTE/V+ | PRODUCTION | |
| MAX98357AGTE/V+T | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Device Drivers 1
Evaluation Software 0
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Audio Amplifiers 2 | ||
| MAX98357B | PRODUCTION | Tiny, Low-Cost, PCM Class D Amplifier with Class AB Performance |
| MAX98358 | PRODUCTION | PDM Input Class D Audio Power Amplifier |
| Parts | Product Life Cycle | Description |
|---|---|---|
| MAX98365 | RECOMMENDED FOR NEW DESIGNS | Tiny, Cost-Effective, 14V Plug-and-Play Digital Class-D Amplifier |
Tools & Simulations
IBIS Model 1
Evaluation Kits
Evaluation System for the MAX98357A and MAX98357B (WLP)
Resources
Evaluation System for the MAX98357A and MAX98357B (WLP)
Resources
Evaluation Kit for the MAXQ2000/MAX98357A/MAX98357B/MAX98358 and MAX98371
Evaluation System for the MAX98357A and MAX98357B (TQFN)
Resources
Evaluation System for the MAX98357A and MAX98357B (TQFN)