Overview
The AD73311LARUZ is a complete front-end processor designed by Analog Devices Inc. for general-purpose applications, particularly in the areas 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 provides a high signal-to-noise ratio (SNR) of 70 dB over the voiceband signal bandwidth, making it suitable for various audio processing tasks. The AD73311LARUZ operates on a single 2.7 V to 3.3 V supply, reducing power consumption and enhancing its versatility in low-power applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Supply Voltage (AVDD, DVDD) | 2.7 | 3.0 | 3.3 | V | |
| 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 | At 64 kHz input sample rate, interpolator bypassed | ||
| Group Delay (DAC) | 50 | µs | |||
| Power Dissipation | 50 | mW | At 2.7 V supply | ||
| Package Type | 20-lead SOIC, SSOP, TSSOP |
Key Features
- 16-bit A/D and D/A conversion channels with 70 dB SNR over voiceband signal bandwidth
- Programmable input/output gain over 38 dB and 21 dB ranges respectively
- On-chip reference voltage for single-supply operation
- Flexible serial port (SPORT) for easy interfacing with DSP engines, supporting up to 4 codecs in cascade
- Low group delay of 25 µs per ADC channel and 50 µs per DAC channel, suitable for active control applications
- Low power consumption with a maximum of 50 mW at 2.7 V supply
- Available in 20-lead SOIC, SSOP, and TSSOP packages
Applications
- General purpose analog I/O
- Speech processing, including low-bit rate compression, enhancement, recognition, and synthesis
- Cordless and personal communications
- Telephony
- Active control of sound and vibration
- Data communications
Q & A
- What is the primary function of the AD73311LARUZ?
The AD73311LARUZ is a complete front-end processor for general-purpose applications, particularly in speech and telephony, featuring 16-bit A/D and D/A conversion channels.
- What is the signal-to-noise ratio (SNR) of the AD73311LARUZ?
The SNR for both the ADC and DAC channels is 70 dB over the voiceband signal bandwidth.
- What are the programmable gain ranges for the A/D and D/A channels?
The gains of the A/D and D/A conversion channels are programmable over 38 dB and 21 dB ranges respectively.
- What is the operating voltage range of the AD73311LARUZ?
The device operates on a single 2.7 V to 3.3 V supply.
- What types of packages are available for the AD73311LARUZ?
The device is available in 20-lead SOIC, SSOP, and TSSOP packages.
- What is the maximum sample rate of the AD73311LARUZ?
The maximum sample rate is 64 ksps.
- What is the group delay of the ADC and DAC channels?
The group delay is 25 µs per ADC channel and 50 µs per DAC channel.
- How much power does the AD73311LARUZ consume at 2.7 V supply?
The maximum power dissipation is 50 mW at 2.7 V supply.
- What applications is the AD73311LARUZ suitable for?
The device is suitable for general purpose analog I/O, speech processing, cordless and personal communications, telephony, active control of sound and vibration, and data communications.
- Can the AD73311LARUZ 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.
