MAX98357AGTE/V

Part: MAX98357A/MAX98357B from Analog Devices

Type: PCM Class D Amplifier

Description: An easy-to-use, low-cost digital pulse-code modulation (PCM) input Class D amplifier that provides 3.2W output power into 4Ω at 5V, 92% efficiency, and Class AB audio performance with no MCLK required.

Operating Conditions:

• Supply voltage: 2.5V to 5.5V
• Operating temperature: -40°C to +85°C
• Sample rates: 8kHz to 96kHz
• Digital audio interface: I2S, Left-Justified, 8-channel TDM

Absolute Maximum Ratings:

• Max supply voltage: +6V (V DD, LRCLK, BCLK, and DIN to GND)
• Max continuous current: ±1.6A (In/Out of V DD/GND/OUT_)
• Max junction/storage temperature: +150°C (Junction Temperature)

Key Specs:

• Output Power: 3.2W into 4Ω (THD+N 10%, gain = 12dB, V DD = 5V)
• Quiescent Current: 2.4mA (T A = +25°C, V DD = 3.7V)
• Efficiency: 92% (Z SPK = 8Ω + 68μH, THD+N = 10%, f = 1kHz, gain = 12dB)
• THD+N: 0.013% (f = 1kHz, P OUT = 0.5W, Z SPK = 8Ω + 68μH, T A = +25°C)
• Output Noise: 22.8μV RMS (A-weighted, 24- or 32-bit data)
• PSRR: 77dB (f = 217Hz, 200mV P-P ripple, T A = +25°C)
• Gain: 3dB, 6dB, 9dB, 12dB, 15dB (selectable via GAIN_SLOT pin)
• Class D Switching Frequency: 300kHz

Features:

• Single-Supply Operation (2.5V to 5.5V)
• 3.2W Output Power into 4Ω at 5V
• 2.4mA Quiescent Current
• 92% Efficiency (R L = 8Ω, P OUT = 1W)
• 22.8μV RMS Output Noise (A V = 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 is 4.32mm 2

Applications:

• Single Li-ion Cell/5V Devices
• Smart Speakers
• Notebook Computers
• IoT Devices
• Gaming Devices (Audio and Haptics)
• Smartphones
• Tablets
• Cameras

Package:

• 9-pin WLP (1.345mm x 1.435mm x 0.64mm)
• 16-pin TQFN (3mm x 3mm x 0.75mm)

• Single-Supply Operation (2.5V to 5.5V)
• 3.2W Output Power into 4Ω at 5V
• 2.4mA Quiescent Current
• 92% Efficiency (R L = 8Ω, P OUT = 1W)
• 22.8μV RMS Output Noise (A V = 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 is 4.32mm 2

• Single Li-ion Cell/5V Devices
• Smart Speakers
• Notebook Computers
• IoT Devices
• Gaming Devices (Audio and Haptics)
• Smartphones
• Tablets
• Cameras

(V DD = 5V, V GND = 0V, GAIN_SLOT = V DD . BCLK = 3.072MHz, LRCLK = 48kHz, speaker loads (Z SPK ) connected between OUTP and OUTN, Z SPK = ∞, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.) (Note 2)

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• All Other Pins to GND.............................. -0.3V to (V DD + 0.3V)

• Continuous Current In/Out of V DD /GND/OUT_..................±1.6A

• Continuous Input Current (all other pins).........................±20mA

• Duration of OUT_ Short Circuit to GND or V DD …....Continuous

• Duration of OUTP Short to OUTN.............................Continuous

• WLP (derate 13.7mW/°C above +70°C)....................1096mW

• TQFN (derate 20.8mW/°C above +70°C)..................1666mW

• Junction Temperature......................................................+150°C

• Operating Temperature Range........................... -40°C to +85°C

• Storage Temperature Range............................ -65°C to +150°C

• Soldering Temperature (reflow).......................................+260°C

• Lead Temperature (soldering, 10s, TQFN) .....................+300°C

Stresses beyond those listed under 'Absolute Maximum Ratings' may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

For the latest package outline information and land patterns (footprints), go to www.analog.com/packages . Note that a '+', '#', or '-' in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status.

TIE WANG 06/27/14

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