Overview
The AD1871YRS is a high-performance stereo audio analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is designed for digital audio applications that require precise and high-quality analog-to-digital conversion. The AD1871 features two 24-bit conversion channels, each equipped with a programmable gain amplifier (PGA), multibit sigma-delta modulators, and decimation filters. It supports sample rates up to 96 kHz and offers a dynamic range of 105 dB, making it suitable for professional audio equipment, musical instruments, and various digital audio recording systems.
Key Specifications
| Parameter | Specification |
|---|---|
| Resolution | 24 bits |
| Sample Rate | Up to 96 kHz |
| Dynamic Range | 105 dB (typical) |
| PGA Gain Range | 0 dB to 12 dB in steps of 3 dB |
| Input Configuration | Differential or single-ended with internal single-ended-to-differential conversion |
| Power Supply | Single 5 V with optional 3.3 V digital interface |
| Operating Temperature | –40°C to +105°C |
| Package Type | 28-lead SSOP |
| Interface Modes | I2S, left-justified, right-justified, DSP serial port modes |
| Control Interface | SPI compatible serial port or optional control pins |
Key Features
- Multibit sigma-delta modulators with “Perfect Differential Linearity Restoration” for reduced idle tones and noise floor
- Supports 16-/20-/24-bit word lengths
- Cascadable up to four devices from a single DSP SPORT device
- On-chip reference and flexible serial data port
- Programmable gain amplifier (PGA) with a gain range of 0 dB to 12 dB in steps of 3 dB
- Decimation filters with very low pass-band ripple and excellent stop-band attenuation
Applications
- Professional audio mixing consoles
- Musical instruments
- Digital audio recorders (CD-R, MD, DVD-R, DAT, HDD)
- Home theater systems
- Automotive audio systems
- Multimedia systems
Q & A
- What is the resolution of the AD1871YRS?
The AD1871YRS has a resolution of 24 bits. - What are the supported sample rates for the AD1871YRS?
The AD1871YRS supports sample rates up to 96 kHz. - What is the dynamic range of the AD1871YRS?
The dynamic range of the AD1871YRS is 105 dB (typical). - What is the gain range of the PGA in the AD1871YRS?
The PGA gain range is from 0 dB to 12 dB in steps of 3 dB. - Can the AD1871YRS be configured for differential or single-ended inputs?
Yes, the AD1871YRS can be configured for either differential or single-ended inputs with internal single-ended-to-differential conversion. - What is the power supply requirement for the AD1871YRS?
The AD1871YRS operates from a single 5 V power supply with an optional 3.3 V digital interface. - What is the operating temperature range for the AD1871YRS?
The operating temperature range is –40°C to +105°C. - What package type is the AD1871YRS available in?
The AD1871YRS is available in a 28-lead SSOP package. - What interface modes does the AD1871YRS support?
The AD1871YRS supports I2S, left-justified, right-justified, and DSP serial port modes. - How is the AD1871YRS controlled?
The AD1871YRS can be controlled via an SPI compatible serial port or optional control pins.
