Overview
The AD73311LARUZ-RL, produced by Analog Devices Inc., is a comprehensive front-end processor designed for general-purpose applications, particularly in the realms of speech and telephony. This device features a 16-bit analog-to-digital (A/D) conversion channel and a 16-bit digital-to-analog (D/A) conversion channel. Each channel offers a high signal-to-noise ratio (SNR) of 70 dB over the voiceband signal bandwidth, making it suitable for various speech and telephony applications, including low-bit rate compression, speech enhancement, recognition, and synthesis.
The AD73311LARUZ-RL operates on a single 2.7 V to 3.3 V supply and is available in a 20-lead SSOP package. It includes an on-chip reference voltage for single-supply operation and a flexible serial port (SPORT) that allows easy interfacing with industry-standard DSP engines, either in single or cascaded configurations.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Voltage - Supply, Analog | 2.7 | - | 3.3 | V | Single supply operation |
| Voltage - Supply, Digital | 2.7 | - | 3.3 | V | Single supply operation |
| ADC Resolution | - | 16-bit | - | - | - |
| DAC Resolution | - | 16-bit | - | - | - |
| ADC SNR | - | 70 dB | - | - | Over voiceband signal bandwidth |
| DAC SNR | - | 70 dB | - | - | Over voiceband signal bandwidth |
| Maximum Sample Rate | - | 64 ksps | - | - | - |
| Group Delay (ADC) | - | 25 µs | - | - | Interpolator bypassed |
| Group Delay (DAC) | - | 50 µs | - | - | - |
| Power Dissipation | - | - | 50 mW | - | At 2.7 V |
| Package Type | - | - | - | 20-lead SSOP | - |
Key Features
- 16-bit A/D and D/A Conversion Channels: High-resolution conversion for accurate signal processing.
- Programmable Gain: The gains of the A/D and D/A conversion channels are programmable over 38 dB and 21 dB ranges, respectively.
- On-Chip Reference Voltage: Allows for single-supply operation.
- Flexible Serial Port (SPORT): Enables easy interfacing with industry-standard DSP engines, supporting up to 4 codecs in cascade for 8 I/O channels.
- Low Group Delay: Suitable for single or multi-channel active-control applications with a group delay of 25 µs per ADC channel and 50 µs per DAC channel.
- Low Power Consumption: Maximum power dissipation of 50 mW at 2.7 V.
- Compact Packaging: Available in 20-lead SSOP, SOIC, and TSSOP packages.
Applications
- General Purpose Analog I/O: Suitable for a wide range of analog input/output applications.
- Speech Processing: Ideal for speech enhancement, recognition, and synthesis.
- Cordless and Personal Communications: Used in wireless communication devices.
- Telephony: Applicable in telephony systems for voice signal processing.
- Active Control of Sound and Vibration: Suitable due to its low group delay characteristics.
- Data Communications: Used in various data communication systems requiring high-quality analog front-end processing).
Q & A
- What is the resolution of the A/D and D/A conversion channels in the AD73311LARUZ-RL?
The AD73311LARUZ-RL features 16-bit A/D and D/A conversion channels.
- What is the signal-to-noise ratio (SNR) of the ADC and DAC channels?
The SNR for both ADC and DAC channels is 70 dB over the voiceband signal bandwidth.
- What is the maximum sample rate supported by the AD73311LARUZ-RL?
The maximum sample rate is 64 ksps.
- What is the group delay of the ADC and DAC channels?
The group delay is 25 µs for the ADC channel and 50 µs for the DAC channel.
- What is the power supply range for the AD73311LARUZ-RL?
The device operates on a single 2.7 V to 3.3 V supply.
- What types of packages are available for the AD73311LARUZ-RL?
The device is available in 20-lead SSOP, SOIC, and TSSOP packages.
- Can the AD73311LARUZ-RL be used in cascaded configurations?
Yes, the flexible serial port (SPORT) allows up to 4 codecs to be connected in cascade, providing up to 8 I/O channels.
- What are some typical applications of the AD73311LARUZ-RL?
Typical applications include speech processing, cordless and personal communications, telephony, and active control of sound and vibration.
- Is the AD73311LARUZ-RL RoHS compliant?
Yes, the AD73311LARUZ-RL is RoHS compliant.
- What is the maximum power dissipation of the AD73311LARUZ-RL?
The maximum power dissipation is 50 mW at 2.7 V.
