Overview
The AD73322AR, produced by Analog Devices Inc., is a dual, front-end processor designed for general-purpose applications, including speech and telephony. This component features two 16-bit analog-to-digital (A/D) conversion channels and two 16-bit digital-to-analog (D/A) conversion channels. It is particularly suited for applications requiring high signal-to-noise ratios and flexible gain control.
Key Specifications
| Parameter | Value |
|---|---|
| Number of A/D Converters | 2 (16-bit) |
| Number of D/A Converters | 2 (16-bit) |
| ADC SNR | 75 dB |
| DAC SNR | 70 dB |
| Maximum Sample Rate | 64 ksps |
| Crosstalk | -90 dB |
| Programmable Input/Output Gain | Yes (38 dB for A/D, 21 dB for D/A) |
| Group Delay | 25 µs per ADC channel, 50 µs per DAC channel |
| Supply Voltage | 2.7 V to 5.5 V |
| Package Type | 28-Lead SOIC (Wide) |
| Power Dissipation | 50 mW max at 2.7 V |
Key Features
- Programmable input/output sample rates with four settings (64, 32, 16, and 8 ksps)
- Flexible serial port (SPORT) allowing up to 4 codecs to be connected in cascade for 8 I/O channels
- On-chip reference voltage for single supply operation, programmable for 3 V or 5 V operation
- Low group delay: 25 µs per ADC channel and 50 µs per DAC channel
- Input-to-output gain network in both analog and digital domains for impedance matching or scaling
- Compatible with industry standard DSP engines through programmable SPORT transfer rate
Applications
- General-purpose analog I/O
- Speech processing
- Cordless and personal communications
- Telephony
- Active control of sound and vibration
- Data communications
- Wireless local loop
Q & A
- What is the AD73322AR used for? The AD73322AR is used for general-purpose applications including speech and telephony, offering dual 16-bit A/D and D/A conversion channels.
- What are the key specifications of the AD73322AR? Key specifications include 75 dB ADC SNR, 70 dB DAC SNR, 64 ksps maximum sample rate, and -90 dB crosstalk.
- What are the programmable gain ranges for the A/D and D/A converters? The A/D converters have a programmable gain range of 38 dB, while the D/A converters have a range of 21 dB.
- What is the supply voltage range for the AD73322AR? The supply voltage range is from 2.7 V to 5.5 V.
- What package types are available for the AD73322AR? The component is available in 28-Lead SOIC (Wide) packages.
- How many I/O channels can be achieved with cascaded devices? Up to 8 I/O channels can be achieved by connecting up to 4 codecs in cascade.
- What is the maximum power dissipation at 2.7 V? The maximum power dissipation is 50 mW at 2.7 V.
- What are the typical applications of the AD73322AR? Typical applications include speech processing, telephony, cordless and personal communications, and data communications.
- Does the AD73322AR support industry standard DSP engines? Yes, it supports industry standard DSP engines through a programmable SPORT transfer rate.
- What is the group delay for the ADC and DAC channels? The group delay is 25 µs per ADC channel and 50 µs per DAC channel.
