Overview
The AD73311LARSZ-REEL, produced by Analog Devices Inc., is a complete front-end processor designed for general-purpose applications, including speech and telephony. This component 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 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 a lower cost. It operates from a single 3.0 V power supply.
The device is suitable for various applications in speech and telephony, such as low-bit rate, high-quality compression, speech enhancement, recognition, and synthesis. Its low group delay makes it ideal for single or multi-channel active-control applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Comments |
|---|---|---|---|---|---|
| Number of Bits | 16 | A/D and D/A Converters | |||
| Number of Channels | 1 | Single-Channel Data Acquisition | |||
| ADC SNR | 75 dB | Signal-to-Noise Ratio | |||
| DAC SNR | 70 dB | Signal-to-Noise Ratio | |||
| Maximum Sample Rate | 64 ksps | ||||
| Crosstalk | -90 dB | ||||
| Programmable Input/Output Gain | 38 dB (ADC) | 21 dB (DAC) | Programmable Gain | ||
| Group Delay | 25 µs (ADC) | 50 µs (DAC) | Low Group Delay | ||
| Power Supply Voltage | 2.7 V | 3.3 V | V | Single Supply Operation | |
| Power Dissipation | 50 mW | mW | At 2.7 V | ||
| Package Type | 20-Lead SSOP, TSSOP, SOIC | Surface Mount Packaging | |||
Key Features
- High-Resolution Conversion: 16-bit A/D and D/A conversion channels providing high signal-to-noise ratios (75 dB for ADC, 70 dB for DAC).
- Programmable Gain: Programmable input/output gain over 38 dB for ADC and 21 dB for DAC channels.
- Low Group Delay: 25 µs per ADC channel and 50 µs per DAC channel, suitable for active-control applications.
- Flexible Serial Port: Allows easy interfacing with industry standard DSP engines and supports cascading up to 4 codecs for 8 I/O channels.
- Single Supply Operation: Operates from a single 2.7 V to 3.3 V power supply with an on-chip reference voltage.
- Low Power Consumption: Maximum power dissipation of 50 mW at 2.7 V, making it suitable for battery-powered devices.
- Compact Packaging: Available in 20-lead SSOP, TSSOP, and SOIC packages for easy integration with PCBs.
Applications
- General Purpose Analog I/O: Suitable for various analog input/output applications.
- Speech Processing: Ideal for speech enhancement, recognition, and synthesis.
- Cordless and Personal Communications: Used in cordless phones and personal communication devices.
- Telephony: Applicable in telephony systems for high-quality voice transmission.
- Active Control of Sound and Vibration: Suitable for single or multi-channel active-control applications due to its low group delay.
- Data Communications: Used in data communication systems requiring high-quality analog-to-digital and digital-to-analog conversion.
- Medical Imaging Systems: Can be used in medical imaging systems requiring high-resolution signal processing.
- Instrumentation and Control Systems: Applicable in industrial process control and instrumentation systems.
Q & A
- What is the resolution of the A/D and D/A conversion channels in the AD73311L?
The AD73311L 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 ADC channel has a 75 dB SNR, and the DAC channel has a 70 dB SNR).
- What is the maximum sample rate of the AD73311L?
The maximum sample rate is 64 ksps).
- What is the power supply voltage range for the AD73311L?
The AD73311L operates from a single 2.7 V to 3.3 V power supply).
- What is the maximum power dissipation of the AD73311L at 2.7 V?
The maximum power dissipation is 50 mW at 2.7 V).
- What types of packages are available for the AD73311L?
The AD73311L is available in 20-lead SSOP, TSSOP, and SOIC packages).
- Can the AD73311L be used in cascaded configurations?
- What are some typical applications of the AD73311L?
The AD73311L is suitable for speech processing, telephony, cordless and personal communications, active control of sound and vibration, and data communications).
- Does the AD73311L have programmable gain?
- What is the group delay of the AD73311L?
The group delay is 25 µs per ADC channel and 50 µs per DAC channel).
