Overview
The SSM2160SZ, manufactured 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' associated with switched resistive networks. The SSM2160SZ is particularly suited for multichannel audio applications, such as home theater surround sound and automotive sound systems.
Key Specifications
| Parameter | Specification |
|---|---|
| Number of Channels | 6 |
| Interface | 3-wire or 4-wire serial data bus |
| Voltage Supply | Single: +10 V to +20 V, Dual: ±5 V to ±10 V |
| Operating Temperature | 0°C to 70°C (TA) |
| Master Attenuation Levels | 128 levels (0 dB to –127 dB) |
| Channel Gain Levels | 32 levels (0 dB to +31 dB) |
| Package Type | 24-SOIC (0.295", 7.50mm Width) |
Key Features
- Digital control of volume for six audio channels with a master level control and individual channel controls.
- Low distortion VCAs (voltage-controlled amplifiers) in the signal path.
- Controlled rate-of-change drive to VCAs eliminates 'clicking' associated with switched resistive networks.
- Each channel controlled by a dedicated 5-bit DAC providing 32 levels of gain.
- A master 7-bit DAC provides 128 levels of attenuation.
- Step sizes are nominally 1 dB and can be changed by external resistors.
- Channel balance maintained over the entire master control range.
- All outputs automatically muted upon power-up.
- Windows software and an evaluation board available for controlling the SSM2160SZ.
Applications
The SSM2160SZ is intended for use in multichannel audio applications, including:
- Home theater surround sound systems.
- Automotive sound systems.
- Other audio systems requiring precise digital volume control.
In these applications, the device can be used to control the volume of the front left, front right, center, rear left, rear right, and sub-bass audio channels.
Q & A
- What is the SSM2160SZ used for?
The SSM2160SZ is used for digital control of volume in multichannel audio applications, such as home theater and automotive sound systems.
- How many channels does the SSM2160SZ control?
The SSM2160SZ controls six audio channels.
- What type of interface does the SSM2160SZ use?
The SSM2160SZ uses a 3-wire or 4-wire serial data bus interface.
- What are the voltage supply options for the SSM2160SZ?
The SSM2160SZ can be operated from single supplies of +10 V to +20 V or dual supplies from ±5 V to ±10 V.
- How many levels of attenuation does the master control provide?
The master control provides 128 levels of attenuation (0 dB to –127 dB).
- How many levels of gain does each channel control provide?
Each channel control provides 32 levels of gain (0 dB to +31 dB).
- What package type is the SSM2160SZ available in?
The SSM2160SZ is available in a 24-SOIC package.
- Is there any software or evaluation board available for the SSM2160SZ?
Yes, Windows software and an evaluation board are available for controlling the SSM2160SZ.
- What is the operating temperature range of the SSM2160SZ?
The operating temperature range is 0°C to 70°C (TA).
- How are the outputs handled upon power-up?
All outputs are automatically muted upon power-up.
