SSM6322 Series

High Fidelity, Low Power, Integrated Stereo Audio Amplifier

Catalog

High Fidelity, Low Power, Integrated Stereo Audio Amplifier

Part	Features	Voltage - Supply [Max]	Voltage - Supply [Min]	Output Type	Package / Case	Supplier Device Package	Operating Temperature [Max]	Operating Temperature [Min]	Mounting Type	Type
Analog Devices SSM6322ACPZ-R7	Depop	6 V	-3 V	2-Channel (Stereo)	24-WFQFN Exposed Pad CSP	24-LFCSP (4x4)	85 °C	-40 °C	Surface Mount	Class AB

Catalog

High Fidelity, Low Power, Integrated Stereo Audio Amplifier

Key Features

• Flexible architecture to interface with all digital-to-analog converters (DACs)Accepts differential current or voltage input (provides single-ended voltage output)

• Accepts differential current or voltage input (provides single-ended voltage output)

• High output current drive capabilityGreater than 100 mA rms output currentAccurately reproduces large music transients into heavy loads (16 Ω to 32 Ω)

• Greater than 100 mA rms output current

• Accurately reproduces large music transients into heavy loads (16 Ω to 32 Ω)

• Excellent audio fidelity−121 dB total harmonic distortion plus noise (THD + N) at 1 kHz, 2 V rms output with ±5 V supply and 32 Ω loadLow output integrated noise (10 Hz to 22 kHz) of 1.8 μV rms with A-weighted filter

• −121 dB total harmonic distortion plus noise (THD + N) at 1 kHz, 2 V rms output with ±5 V supply and 32 Ω load

• Low output integrated noise (10 Hz to 22 kHz) of 1.8 μV rms with A-weighted filter

• Supply range: ±3.3 V to ±6 V (typical)

• Low power operationEnabled: 60 mW, VCC= +5 V, VEE= −5 VDisabled/voice select: <30 μA

• Enabled: 60 mW, VCC= +5 V, VEE= −5 V

• Disabled/voice select: <30 μA

• Low power disable mode with high output impedanceHigh-Z in power-down mode eliminating voice mode switch from the high fidelity path

• High-Z in power-down mode eliminating voice mode switch from the high fidelity path

• Greater than 87 dB power supply rejection ratio (PSRR) at 20 kHz

• Adjustable input common-mode voltage with resistor programmable reference voltage1.45 V (typical) with no external components

• 1.45 V (typical) with no external components

• Capable of two single-pole, low-pass filters in series2.2 nF maximum input capacitorSecond filter between the GAINx and FILTx pins

• 2.2 nF maximum input capacitor

• Second filter between the GAINx and FILTx pins

• Pop and click noise suppression

• Signal chain integration supports small printed circuit board (PCB) area

• Compact 4 mm × 4 mm LFCSP package

Description

The SSM6322 is an integrated, dual-channel audio amplifier solution that interfaces directly with audio DAC/CODEC, maximizing the fidelity of high fidelity audio signal chains. The highly efficient design of the SSM6322 delivers outstanding audio performance while minimizing power dissipation for maximum battery life in portable applications.The SSM6322 features −121 dB THD + N at 1 kHz, along with very low output noise from 20 Hz to 20 kHz. The low power operation, high peak output current, and high PSRR make the SSM6322 an ideal candidate for applications that require high fidelity audio, high dynamic range, precision, and low power. This highly integrated drive solution also reduces development time while reducing board space and minimizing external components.The SSM6322 is available in a 24-lead LFCSP package. The SSM6322 operates over the industrial temperature of −40°C to +85°C.ApplicationsHigh fidelity headphone driverMobile phonesBluetooth speakers & headphonesGaming Notebooks and TabletsA/V receiversProfessional audio equipmentAudio test equipmentAutomobile infotainment system