Overview
The AD73311LARS-REEL, produced by Analog Devices Inc., is a high-performance analog front-end (AFE) processor designed 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 providing a 70 dB signal-to-noise ratio over the voiceband signal bandwidth. The AD73311L is an enhanced version of the AD73311, offering improved on-chip filtering, additional sample-rate options, and lower cost. It operates on a single supply voltage ranging from 2.7 V to 3.3 V, making it versatile for various system integrations.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions |
|---|---|---|---|---|---|
| Number of Bits | 16 | ||||
| Number of Channels | 1 | ||||
| Power Consumption | 50 | mW | At 2.7 V | ||
| Analog Supply Voltage | 2.7 | 5.25 | V | ||
| Digital Supply Voltage | 2.7 | 5.25 | 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 | |||
| Group Delay (DAC) | 50 | µs | |||
| Programmable Gain (ADC) | -38 | 0 | dB | ||
| Programmable Gain (DAC) | -21 | 0 | dB | ||
| Package Type | 20-SSOP | ||||
Key Features
- High-Resolution Conversion: 16-bit A/D and D/A conversion channels providing accurate signal representation.
- Programmable Gain: The gains of the A/D and D/A conversion channels are programmable over 38 dB and 21 dB ranges, respectively.
- Low Power Consumption: Maximum power dissipation of 50 mW at 2.7 V, making it suitable for battery-powered devices.
- Flexible Supply Voltage: Compatible with analog and digital supply voltages from 2.7 V to 5.25 V.
- On-Chip Reference Voltage: Allows single-supply operation.
- Serial Port (SPORT): Enables easy interfacing with industry standard DSP engines and supports cascading up to four codecs for 8 I/O channels.
- Low Group Delay: 25 µs for ADC and 50 µs for DAC, suitable for single or multi-channel active control applications.
Applications
- Speech Processing: Ideal for low-bit rate, high-quality compression, speech enhancement, recognition, and synthesis.
- Telephony: Suitable for various telephony applications including cordless and personal communications.
- Active Control of Sound & Vibration: The low group delay makes it suitable for active control applications.
- Data Communications: Used in general-purpose analog I/O and data communications.
- Medical Imaging Systems: Can be applied in medical imaging and other high-resolution signal processing applications.
- Instrumentation and Control Systems: Useful in industrial process control and instrumentation.
Q & A
- What is the AD73311LARS-REEL used for? The AD73311LARS-REEL is a complete front-end processor for general-purpose applications, including speech and telephony.
- What are the key features of the AD73311LARS-REEL? It includes 16-bit A/D and D/A conversion channels, programmable gain, low power consumption, and flexible supply voltage.
- What is the maximum sample rate of the AD73311LARS-REEL? The maximum sample rate is 64 ksps.
- What is the signal-to-noise ratio (SNR) of the ADC and DAC channels? Both ADC and DAC channels provide a 70 dB SNR over the voiceband signal bandwidth.
- 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.
- Can the AD73311LARS-REEL be used in cascaded configurations? Yes, it supports cascading up to four codecs for 8 I/O channels through its serial port (SPORT).
- What are the typical applications of the AD73311LARS-REEL? It is used in speech processing, telephony, active control of sound and vibration, data communications, medical imaging systems, and instrumentation and control systems.
- What is the power consumption of the AD73311LARS-REEL? The maximum power dissipation is 50 mW at 2.7 V.
- What package types are available for the AD73311LARS-REEL? It is available in 20-lead SSOP packages.
- Is the AD73311LARS-REEL RoHS compliant? Yes, the AD73311LARS-REEL is lead-free and RoHS compliant.
