Overview
The AD1877JRZ is a stereo, 16-bit oversampling Analog-to-Digital Converter (ADC) from Analog Devices Inc., based on Sigma Delta (∑∆) technology. This component is primarily designed for digital audio applications that require a single 5 V power supply. Each single-ended channel consists of a fourth-order one-bit noise shaping modulator and a digital decimation filter. The AD1877 features an on-chip voltage reference that is stable over temperature and time, defining the full-scale range for both channels. The digital output data from both channels are time-multiplexed to a single, flexible serial interface, supporting both master and slave modes.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | 4.75 | 5 | 5.25 | V |
| Analog Current | 35 | 43 | - | mA |
| Digital Current | 16 | 20 | - | mA |
| Power Dissipation (Operation) | 255 | 315 | - | mW |
| Power Dissipation (Power Down) | 95 | 325 | - | µW |
| Dynamic Range | - | 92 | - | dB |
| S/(THD + N) | - | 90 | - | dB |
| Resolution | - | 16 bits | - | - |
| Sampling Rate | - | up to 48 ksps | - | - |
| Package | - | 28-Lead SOIC | - | - |
| Operating Temperature | 0 | - | 70 | °C |
Key Features
- Single 5 V power supply
- Single-ended dual-channel analog inputs
- Fourth-order, 64X oversampling Σ-Δ modulator
- Three-stage, linear-phase decimator
- Input overrange indication and on-chip voltage reference
- Flexible serial output interface supporting master and slave modes
- Low power consumption: less than 100 µW in power-down mode
- Separate analog and digital supply connections to reduce digital crosstalk
- TTL-compatible input and output signals
- Available in a 28-lead SOIC package
Applications
The AD1877JRZ is primarily intended for digital audio applications, including:
- Digital audio recording and playback systems
- Audio interfaces and sound cards
- Professional audio equipment
- Consumer audio devices such as CD players and digital audio workstations
Q & A
- What is the resolution of the AD1877JRZ?
The AD1877JRZ has a resolution of 16 bits.
- What is the typical dynamic range of the AD1877JRZ?
The typical dynamic range is 92 dB.
- What is the power supply requirement for the AD1877JRZ?
The AD1877JRZ operates on a single 5 V power supply.
- What is the maximum sampling rate of the AD1877JRZ?
The maximum sampling rate is up to 48 ksps.
- Does the AD1877JRZ support both master and slave modes?
Yes, the AD1877JRZ supports both master and slave modes for the serial interface.
- What type of package is the AD1877JRZ available in?
The AD1877JRZ is available in a 28-lead SOIC package.
- What is the operating temperature range of the AD1877JRZ?
The operating temperature range is from 0°C to 70°C.
- Does the AD1877JRZ have on-chip voltage reference?
Yes, the AD1877JRZ features an on-chip voltage reference that is stable over temperature and time.
- How does the AD1877JRZ handle power consumption in power-down mode?
In power-down mode, the AD1877JRZ consumes less than 100 µW.
- What type of modulation does the AD1877JRZ use?
The AD1877JRZ uses a fourth-order one-bit noise shaping modulator based on Sigma Delta technology.
