Overview
The ADAV801ASTZ-REEL is a stereo audio codec produced by Analog Devices Inc., designed for high-performance audio applications such as DVD or CD recorders. This integrated circuit combines record (ADC), playback (DAC), and format conversion (SRC) functionalities on a single chip, making it a versatile and cost-effective solution. The ADAV801 features proprietary high-performance converter cores, variable input gain, automatic level control, and independent digital volume control. It operates from a single 3.3 V analog power supply and a digital power supply range of 3.0 V to 3.6 V, and is housed in a 64-lead LQFP package. The device is characterized for operation over the commercial temperature range of −40°C to +85°C.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Comments |
|---|---|---|---|---|---|
| Input Impedance (PGA) | 4 kΩ | Minimum | |||
| Maximum Gain (PGA) | 24 dB | ||||
| Gain Step (PGA) | 0.5 dB | ||||
| Absolute Voltage, VREF | 1.5 V | ||||
| VREF Temperature Coefficient | 80 ppm/°C | ||||
| Number of Channels (ADC) | 2 | ||||
| Resolution (ADC) | 24 Bits | ||||
| Dynamic Range (ADC) at fS = 48 kHz | 99 dB | Unweighted | |||
| Total Harmonic Distortion + Noise (ADC) at fS = 48 kHz | -88 dB | Input = −1.0 dBFS | |||
| Analog Input Range (± Full Scale) | 1.0 V rms | ||||
| DC Accuracy Gain Error | -1.5 dB | -0.8 dB | |||
| Interchannel Gain Mismatch | 0.05 dB | ||||
| Gain Drift | 1 mdB/°C | ||||
| Offset | -10 mV | ||||
| Crosstalk (EIAJ Method) | -110 dB | ||||
| Volume Control Step Size | 0.39 % per step | 256 Steps | |||
| Maximum Volume Attenuation | -48 dB | ||||
| Mute Attenuation | ∞ dB | ADC outputs all zero codes | |||
| Group Delay at fS = 48 kHz | 910 μs | ||||
| Group Delay at fS = 96 kHz | 460 μs | ||||
| Voltage, AVDD | 3.0 V | 3.3 V | 3.6 V | V | |
| Voltage, DVDD | 3.0 V | 3.3 V | 3.6 V | V | |
| Voltage, ODVDD | 3.0 V | 3.3 V | 3.6 V | V | |
| Operating Current (All supplies at 3.3 V) | Analog: 60 mA, Digital: 38 mA, Digital Interface: 13 mA, DIRIN/DIROUT: 5 mA, PLL: 18 mA | ||||
| Power-Down Current (RESET low, no MCLK) | Analog: 18 mA, Digital: 2.5 mA, Digital Interface: 700 μA, DIRIN/DIROUT: 3.5 mA, PLL: 900 μA |
Key Features
- High-performance stereo ADC and DAC with 24-bit resolution.
- Variable input gain and automatic level control for optimal recording.
- Independent digital volume control with 256 steps and a maximum attenuation of -48 dB.
- Sample rate converter (SRC) for high-performance sample rate conversion.
- Support for multiple input sources: playback, auxiliary, DIR, or ADC (record).
- Operation via an SPI-compatible serial interface for control register settings.
- Single 3.3 V analog power supply and digital power supply range of 3.0 V to 3.6 V.
- Housed in a 64-lead LQFP package with commercial temperature range of −40°C to +85°C.
Applications
- DVD recorders.
- CD recorders (CD-R/W).
- Other high-performance audio recording and playback systems.
Q & A
- What is the primary function of the ADAV801ASTZ-REEL?
The ADAV801ASTZ-REEL is a stereo audio codec designed for high-performance audio applications, providing record (ADC), playback (DAC), and format conversion (SRC) functionalities.
- What is the resolution of the ADC and DAC in the ADAV801ASTZ-REEL?
The ADC and DAC in the ADAV801ASTZ-REEL have a resolution of 24 bits.
- What is the dynamic range of the ADC at a sample rate of 48 kHz?
The dynamic range of the ADC at a sample rate of 48 kHz is 99 dB unweighted.
- How does the ADAV801ASTZ-REEL manage input levels for recording?
The ADAV801ASTZ-REEL features variable input gain and automatic level control to adjust recorded input levels optimally.
- What is the maximum volume attenuation provided by the digital volume control?
The maximum volume attenuation is -48 dB with 256 steps.
- What types of power supplies does the ADAV801ASTZ-REEL require?
The ADAV801ASTZ-REEL requires a single 3.3 V analog power supply and a digital power supply range of 3.0 V to 3.6 V.
- How is the ADAV801ASTZ-REEL controlled?
The ADAV801ASTZ-REEL is controlled via an SPI-compatible serial interface.
- What is the operating temperature range of the ADAV801ASTZ-REEL?
The operating temperature range is −40°C to +85°C.
- In what package is the ADAV801ASTZ-REEL housed?
The ADAV801ASTZ-REEL is housed in a 64-lead LQFP package.
- What are some common applications of the ADAV801ASTZ-REEL?
Common applications include DVD recorders, CD recorders (CD-R/W), and other high-performance audio recording and playback systems.
- Is the ADAV801ASTZ-REEL scheduled for obsolescence?
Yes, the ADAV801ASTZ-REEL is scheduled for obsolescence and will be discontinued by the manufacturer.
