Overview
The RHYTHM R3110-CBAA-E1T from onsemi is a pre-fit Digital Signal Processing (DSP) system designed specifically for entry-level hearing aids. This hybrid device is based on a two-channel compression circuit and does not require software configuration or the storage of audiology parameters via computer fitting. It offers a simple, cost-effective solution with features typically found in high-end hearing aids, such as Adaptive Noise Reduction and Adaptive Feedback Cancellation. The R3110 is intended to replace aging analog solutions, providing the ease of use of analog devices but with the superior performance of digital technology.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Temperature Range | 0 to 40 | °C |
| Storage Temperature Range | −20 to +70 | °C |
| Absolute Maximum Power Dissipation | 25 | mW |
| Maximum Operating Supply Voltage | 1.65 | VDC |
| Absolute Maximum Supply Voltage | 1.8 | VDC |
| Hybrid Current (All functions, trimmers at default) | −550 | μA |
| Minimum Operating Supply Voltage | 0.93 to 0.97 | V |
| Supply Voltage Turn On Threshold | 1.06 to 1.16 | V |
| Low Frequency System Limit | −125 | Hz |
| High Frequency System Limit | −8 kHz | |
| Sampling Rate | 16 kHz | |
| Audio Bandwidth | 8 kHz | |
| Input Dynamic Range | 96 dB | |
| Hybrid Dimensions | 200 x 122 x 39.4 mil (5.08 x 3.1 x 1.0 mm) |
Key Features
- Pre-fit Audiology Parameters: All sound-processing algorithms are preprogrammed, enabling manufacturers to develop hearing aids in various form factors and to fit a wide range of hearing loss profiles.
- Trimmer-Based Fitting: Adjustable parameters include Low-Cut Filter Corner Frequency, High-Cut Filter Corner Frequency, Wideband Gain, Tinnitus Noise Level, and Output Limiting (AGC-O).
- Input Modes: Simple Mode, Advanced Mode with Adaptive Noise Reduction and Adaptive Feedback Cancellation, and Telecoil Mode.
- Push Button Support: Allows mode selection using a momentary push button.
- Analog Volume Control: Supports basic acoustic indicators and analog volume adjustment.
- High Quality Audio Processing: 20-bit audio processing with a high fidelity audio CODEC.
- High Power/High Gain Capability: Drives zero-bias two-terminal receivers.
- Tinnitus Noise Generation: Dedicated algorithm for tinnitus treatment with adjustable noise level.
- Feedback Cancellation: Third-generation Adaptive Feedback Canceller reduces acoustic feedback.
Applications
The R3110-CBAA-E1T is primarily designed for entry-level hearing aids, offering a cost-effective and simple solution that replaces aging analog technologies. It is suitable for various hearing aid form factors and can be used in different listening environments, including quiet and noisy settings. Additionally, it can be configured as a tinnitus masker device with no microphones, making it versatile for different auditory needs.
Q & A
- What is the primary application of the R3110-CBAA-E1T?
The R3110-CBAA-E1T is primarily used in entry-level hearing aids to provide a digital signal processing solution.
- Does the R3110-CBAA-E1T require software configuration?
No, the R3110-CBAA-E1T does not require software configuration or the storage of audiology parameters via computer fitting.
- What are the key input modes of the R3110-CBAA-E1T?
The device supports Simple Mode, Advanced Mode with Adaptive Noise Reduction and Adaptive Feedback Cancellation, and Telecoil Mode.
- How does the R3110-CBAA-E1T handle tinnitus treatment?
The device includes a dedicated algorithm for tinnitus treatment with adjustable noise level controlled via the TN-EN and WB/NL pins.
- What is the sampling rate and audio bandwidth of the R3110-CBAA-E1T?
The device has a sampling rate of 16 kHz and an audio bandwidth of 8 kHz.
- What is the input dynamic range of the R3110-CBAA-E1T?
The input dynamic range is 96 dB.
- Is the R3110-CBAA-E1T RoHS compliant?
- How many external components are required for a basic hearing aid build using the R3110-CBAA-E1T?
In its simplest configuration, a hearing aid build using the R3110-CBAA-E1T requires only four external electronic components.
- What are the dimensions of the R3110-CBAA-E1T hybrid package?
The hybrid package dimensions are 200 x 122 x 39.4 mil (5.08 x 3.1 x 1.0 mm).
- Can the R3110-CBAA-E1T be used solely as a tinnitus masker device?
