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Product Detailed Parameters
- Description：IC AMP CLASS D MONO 3.17W 9WLCSP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Class D
- Output Type：1-Channel (Mono)
- Max Output Power x Channels @ Load：3.17W x 1 @ 4Ohm
- Voltage - Supply：2.5V ~ 5.5V
- Features：Depop, Differential Inputs, Short-Circuit and Thermal Protection, Shutdown
- Mounting Type：Surface Mount
- Supplier Device Package：9-WLCSP (1.24x1.24)
- Package / Case：9-UFBGA, WLCSP
- Operating Temperature：-40°C ~ 85°C (TA)
- Grade：-
- Qualification：-
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Overview
The SSM2377ACBZ-R7 is a mono Class-D audio amplifier from Analog Devices. It operates on a single supply voltage ranging from 2.5 V to 5.5 V. The device delivers up to 2.5 W into a 4 Ω load and 1.4 W into an 8 Ω load at 5.0 V, with a signal-to-noise ratio exceeding 100 dB. It utilizes spread-spectrum Σ-Δ modulation for filterless operation. Key electrical parameters include a typical shutdown current of 100 nA, a fixed input impedance of 80 kΩ, and selectable closed-loop gains of 6 dB or 12 dB. The unit functions within an industrial temperature range of −40°C to +85°C.
Feature Summary
- Filterless design using spread-spectrum pulse density modulation to minimize electromagnetic interference emissions.
- Integrated pop-and-click suppression circuitry to reduce audible noise during power transitions.
- Micropower shutdown mode controlled by a logic low signal to the SD pin.
- Built-in thermal shutdown and output short-circuit protection with autorecovery capabilities.
Applications
- Mobile phones
- MP3 players
- Portable electronics
Procurement Notes
Verify the specific ordering suffix R7 against the manufacturer's official documentation to confirm reel packaging specifications. Ensure compatibility with the required operating temperature range of −40°C to +85°C. Confirm that the application circuit supports the differential input configuration and the necessary power supply decoupling requirements for optimal performance.
Selection Notes
Select this component for designs requiring high efficiency without external output filters. The gain selection feature allows flexibility between 6 dB and 12 dB configurations via the GAIN pin. Consider the ultralow EMI characteristics if the design must pass FCC Class B radiated emission testing standards. Verify that the available board space accommodates the 9-ball WLCSP package dimensions.
Part Context
This part belongs to the SSM2377 series of high-efficiency mono audio amplifiers. It is designed specifically for mobile phone applications where maximizing performance while minimizing external component count is critical. The device integrates a fully functional Class-D amplifier architecture within a compact footprint suitable for space-constrained portable devices.
Replacement Considerations
SSM2377ACBZ-RL
FAQ
How is the gain setting configured?
The gain is set by connecting the GAIN pin to either VDD for 6 dB or GND for 12 dB.
Does the amplifier require an external LC output filter?
No, it uses a filterless modulation scheme relying on speaker inductance and natural filtering.
