Overview
The AD73311LARSZ is a high-performance analog front-end (AFE) processor designed by Analog Devices Inc. This component is tailored for general-purpose applications, particularly in the areas of speech and telephony. It 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 AD73311LARSZ 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 from 2.7 V to 3.3 V and is available in 20-lead SSOP, TSSOP, and SOIC packages.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Number of Bits | - | 16 | - | - | A/D and D/A Conversion Channels |
| Number of Channels | - | 1 | - | - | Single-channel data acquisition |
| Power Consumption | - | - | 50 mW | - | At 2.7 V supply voltage |
| Analog Supply Voltage | 2.7 V | - | 5.25 V | V | - |
| Digital Supply Voltage | 2.7 V | - | 5.25 V | V | - |
| Maximum Sample Rate | - | - | 64 ksps | - | - |
| Signal-to-Noise Ratio (SNR) | - | - | 70 dB | - | For both A/D and D/A channels |
| Group Delay | - | - | 25 µs (ADC), 50 µs (DAC) | - | - |
| Package Type | - | - | - | - | 20-lead SSOP, TSSOP, SOIC |
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: Efficient power consumption at 50 mW, 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.
- Compact Design: Available in 20-lead SSOP, TSSOP, and SOIC packages for easy integration with PCBs.
- Low Group Delay: Suitable for single or multi-channel active-control applications due to its low group delay characteristic.
- On-Chip Reference Voltage: Allows single-supply operation.
- Serial Port (SPORT): Enables easy interfacing with industry standard DSP engines.
Applications
- Speech Processing: Suitable for low-bit rate, high-quality compression, speech enhancement, recognition, and synthesis.
- Telephony: Ideal for various telephony applications.
- Active Control of Sound and Vibration: Used in single or multi-channel active-control applications.
- Medical Imaging Systems: Applicable in medical imaging and diagnostic systems.
- Instrumentation and Control Systems: Used in industrial process control and instrumentation.
- Communication Systems: Suitable for cordless and personal communication systems.
Q & A
- What is the resolution of the A/D and D/A conversion channels in the AD73311LARSZ?
The AD73311LARSZ features 16-bit A/D and D/A conversion channels.
- What is the maximum sample rate of the AD73311LARSZ?
The maximum sample rate is 64 ksps.
- What is the signal-to-noise ratio (SNR) of the AD73311LARSZ?
The SNR for both A/D and D/A channels is 70 dB.
- 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 are the supported supply voltage ranges for the AD73311LARSZ?
The component supports analog and digital supply voltages from 2.7 V to 5.25 V.
- What types of packages are available for the AD73311LARSZ?
The AD73311LARSZ is available in 20-lead SSOP, TSSOP, and SOIC packages.
- What is the power consumption of the AD73311LARSZ?
The maximum power consumption is 50 mW at 2.7 V supply voltage.
- What is the group delay of the AD73311LARSZ?
The group delay is 25 µs for the A/D channel and 50 µs for the D/A channel.
- Is the AD73311LARSZ suitable for battery-powered devices?
Yes, due to its low power consumption, it is suitable for battery-powered devices.
- What types of applications is the AD73311LARSZ commonly used in?
The AD73311LARSZ is commonly used in speech processing, telephony, active control of sound and vibration, medical imaging systems, instrumentation and control systems, and communication systems.
