SSM2160S-REEL

Audio Special Purpose Overview

The SSM2160S-REEL is a six-channel digital volume control integrated circuit manufactured by Analog Devices Inc. It features clickless digitally controlled level adjustment with a 7-bit master control providing 128 levels of attenuation and five-bit channel controls offering 32 levels of gain. The device operates on single supplies from +10 V to +20 V or dual supplies from ±5 V to ±10 V, drawing approximately 20 mA. Key audio specifications include 100 dB dynamic range, 0.01% THD+N, and –90 dBu noise floor. It utilizes a serial interface for microcontroller connectivity and includes automatic power-on mute functionality.

Audio Special Purpose Feature Summary

• Six independent channels with dedicated 5-bit DACs for gain control (0 dB to +31 dB).
• Centralized 7-bit master DAC provides 128 levels of attenuation (0 dB to –127 dB).
• Clickless operation via controlled rate-of-change drive to internal VCAs.
• Supports 3-wire or 4-wire serial data bus interfaces for system integration.

Audio Special Purpose Applications

• Home theater receivers and surround sound decoders.
• Automotive body electronics & lighting.
• Communications equipment.
• Broadband applications.

Audio Special Purpose Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation. The REEL suffix indicates tape-and-reel packaging, which differs from the tube packaging associated with the standard SSM2160S part number. Confirm package dimensions and thermal characteristics match the design requirements before finalizing procurement.

Audio Special Purpose Selection Notes

Select this component for applications requiring precise multi-channel balance and volume control. Ensure the supply voltage supports the required output signal swing, as the maximum peak-to-peak output cannot exceed one-quarter of the total supply span. Verify that the external resistors used for step size adjustments are within tolerance to maintain accurate gain tracking across all channels.

Audio Special Purpose Part Context

This component belongs to the SSM2160 series of audio special purpose ICs. It serves as a bridge between digital control logic and analog audio signal paths, replacing mechanical potentiometers in high-end audio equipment. The SOIC-24 package allows for surface mount implementation in compact consumer electronics designs.

Audio Special Purpose Replacement Considerations

The SSM2160S is the tube-packaged equivalent of the SSM2160S-REEL. Both share identical electrical characteristics and pinouts. No alternative functional substitutes are documented in the provided source material.