Overview
The SSM2160S, produced by Analog Devices Inc., is a 6-channel, serial input master/balance volume control integrated circuit. This device is designed to provide digital control over the volume of six audio channels, featuring a master level control and individual channel controls. It utilizes low distortion voltage-controlled amplifiers (VCAs) in the signal path, eliminating the clicking noise associated with switched resistive networks. The SSM2160S is suitable for various multichannel audio applications, including home theater surround sound and automotive audio systems.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Number of Channels | 6 audio channels | - |
| Master Control | 7-bit DAC, 128 levels of attenuation | - |
| Channel Control | 5-bit DAC, 32 levels of gain per channel | - |
| Step Size | Nominally 1 dB, adjustable by external resistors | - |
| Dynamic Range | 100 dB | - |
| Power Supplies | Single supply: +10 V to +20 V, Dual supply: ±5 V to ±10 V | - |
| Supply Current (No Load) | 20 mA to 28 mA | - |
| Package | 24-SOIC (0.295", 7.50mm Width) | - |
| Mounting Type | Surface Mount | - |
Key Features
- Clickless digitally controlled level adjustment
- Low distortion VCAs in the signal path
- Master control with 128 levels of attenuation and channel controls with 32 levels of gain each
- Automatic power-on mute
- 3-wire or 4-wire serial data bus for interfacing with microcontrollers
- Windows software and evaluation board available for control and testing
- Maintains channel balance over the entire master control range
Applications
The SSM2160S is intended for multichannel audio applications, including:
- Home theater surround sound systems
- Automotive audio systems
- Professional audio equipment
- Any system requiring precise digital control over multiple audio channels
In these applications, the SSM2160S can be used to control the volume and balance of multiple audio channels, ensuring high-quality audio performance and eliminating the need for manual volume adjustments.
Q & A
- What is the primary function of the SSM2160S?
The primary function of the SSM2160S is to provide digital control over the volume of six audio channels, with a master level control and individual channel controls.
- How many levels of attenuation does the master control offer?
The master control offers 128 levels of attenuation.
- What is the step size for the master and channel controls?
The step size is nominally 1 dB and can be adjusted by external resistors.
- What type of power supplies can the SSM2160S operate with?
The SSM2160S can operate with single supplies from +10 V to +20 V or dual supplies from ±5 V to ±10 V.
- What is the package type of the SSM2160S?
The SSM2160S comes in a 24-SOIC package.
- How does the SSM2160S eliminate clicking noise?
The SSM2160S uses controlled rate-of-change drive to the VCAs, eliminating the clicking noise associated with switched resistive networks.
- What is the dynamic range of the SSM2160S?
The dynamic range is 100 dB.
- Is there any software or evaluation board available for the SSM2160S?
Yes, Windows software and an evaluation board are available for controlling and testing the SSM2160S.
- What applications is the SSM2160S suitable for?
The SSM2160S is suitable for multichannel audio applications such as home theater surround sound and automotive audio systems.
- How does the SSM2160S handle power-on?
Upon power-up, all outputs are automatically muted.
