AD1877JRZ - 16-Bit Stereo Audio ADC | Analog Devices
MPN: AD1877JRZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.25 | $112.50 |
| 100 | $9.8 | $980.00 |
| 500 | $8.75 | $4,375.00 |
| 1,000 | $7.9 | $7,900.00 |
AD1877JRZ Overview
An audio ADC is a specialized analog-to-digital converter optimized for capturing audio signals with high fidelity, converting continuous analog audio waveforms into digital data for processing, storage, or transmission. In the signal chain, the audio ADC sits between the analog front-end (microphone preamp, line input) and the digital signal processor (DSP) or codec, forming a critical link in digital audio systems. The AD1877JRZ belongs to the family of sigma-delta ADCs, which use oversampling and noise shaping to achieve high resolution and low noise, making them ideal for professional audio, consumer electronics, and instrumentation.
Key features of the AD1877JRZ include a single 5 V power supply operation, simplifying power design, and a 16-bit resolution with 48 kSPS sampling rate, suitable for CD-quality audio. The on-chip voltage reference is stable over temperature, reducing external component count. The device also offers a flexible serial output port with pin-selectable configuration, allowing easy interface to DSPs and microcontrollers. The 92 dB dynamic range ensures excellent signal fidelity, while the 90 dB SNR minimizes noise floor, critical for high-end audio applications.
Technically, the AD1877JRZ employs a fourth-order sigma-delta modulator with 64-times oversampling, which pushes quantization noise to high frequencies where it is removed by the digital decimation filter. This architecture achieves high resolution without requiring precise analog components. The device includes an on-chip voltage reference, eliminating the need for external references, and supports a master clock input for synchronization. The serial output port can be configured for various data formats, including I2S and left-justified, enhancing compatibility.
Typical applications include digital audio recording systems, mixing consoles, audio test equipment, and consumer audio products such as CD recorders and digital mixers. The AD1877JRZ is also suitable for automotive audio systems and professional sound cards, where high dynamic range and low distortion are essential.
When designing with the AD1877JRZ, ensure a clean 5 V supply with adequate decoupling (e.g., 0.1 µF and 10 µF capacitors) to minimize noise. The analog input should be biased around 2.5 V (mid-supply) for optimal performance, and the master clock should be derived from a low-jitter source to maintain SNR. The serial output timing must match the receiving device's requirements, which can be configured via the mode pins.
Drop-in alternatives for AD1877JRZ — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
AD1877JRZ-RL
✅ Drop-In📋 Reference alternative (not in catalog)
AK4620B
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
CS4222
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PCM1804
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
AD1877JRZ Maximum Ratings & Electrical Characteristics
| Resolution | 16 bit |
| Sampling Rate | 48 kSPS |
| Number of Channels | 2 (Stereo) |
| Input Type | Single-Ended |
| ADC Architecture | Sigma-Delta |
| Dynamic Range | 92 dB (typ) |
| Signal-to-Noise Ratio (SNR) | 90 dB (typ) |
| THD+N | 0.006 dB |
| Supply Voltage | 5 V (single) |
| Analog Input Voltage Range | 0.5 V to 4.1 V |
| Data Interface | Serial (I2S, left-justified) |
| Package | SOIC-28 |
| Operating Temperature Range | 0°C to 70°C |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
AD1877JRZ Pin Configuration
| Pin 1 | MCLK — Master clock input |
| Pin 2 | LRCLK — Left/right clock input |
| Pin 3 | BCLK — Bit clock input |
| Pin 4 | DATA — Serial data output |
| Pin 5 | MODE — Serial format mode select |
| Pin 6 | VREF — Voltage reference output |
| Pin 7 | AVDD — Analog supply (5V) |
| Pin 8 | AVSS — Analog ground |
| Pin 9 | VINL — Left channel analog input |
| Pin 10 | VINR — Right channel analog input |
| Pin 11 | FILT — Filter capacitor connection |
| Pin 12 | DVDD — Digital supply (5V) |
| Pin 13 | DGND — Digital ground |
| Pin 14 | PDWN — Power down control |
Typical Applications
AD1877JRZ is suitable for 6 applications: Digital Audio Recording, Professional Mixing Consoles, Audio Test and Measurement, Consumer Audio Products, Automotive Infotainment, Security and Surveillance.
Digital Audio Recording
The AD1877JRZ is ideal for digital audio recording systems, such as multi-track recorders and audio interfaces, due to its 92 dB dynamic range and 90 dB SNR. Its single 5 V supply simplifies power design, and the flexible serial output allows direct connection to DSPs or FPGAs. The 48 kSPS sampling rate supports CD-quality audio, while the sigma-delta architecture ensures low noise and high fidelity. In a recording chain, the ADC converts analog microphone or line signals into digital data for processing, with the AD1877JRZ providing clean conversion without introducing audible artifacts.
Recommended
Professional Mixing Consoles
In professional mixing consoles, the AD1877JRZ provides high-quality analog-to-digital conversion for multiple input channels. Its 92 dB dynamic range ensures that quiet signals are captured without noise, and the 90 dB SNR maintains signal integrity. The single-ended inputs simplify front-end design, and the serial output can be daisy-chained to a DSP for mixing. The device's low THD+N of 0.006 dB ensures transparent audio reproduction, making it suitable for studio-grade equipment. The 5 V supply is compatible with standard console power rails, and the SOIC-28 package allows compact PCB layouts.
Recommended
Audio Test and Measurement
The AD1877JRZ is well-suited for audio test and measurement equipment, such as distortion analyzers and spectrum analyzers, due to its high dynamic range and low distortion. The 92 dB dynamic range allows accurate measurement of low-level signals, while the 90 dB SNR ensures reliable data acquisition. The sigma-delta architecture provides excellent linearity, and the serial output can be interfaced to a microcontroller for data logging. The device's single 5 V supply simplifies bench power requirements, and the commercial temperature range is adequate for laboratory environments. The 48 kSPS sampling rate is sufficient for audio-band analysis up to 24 kHz.
Recommended
Consumer Audio Products
The AD1877JRZ is used in consumer audio products like CD recorders, digital mixers, and sound cards, where high-quality audio conversion is required. Its 16-bit resolution and 48 kSPS sampling rate meet the Red Book CD standard, and the 92 dB dynamic range ensures clear audio reproduction. The single 5 V supply is common in consumer electronics, and the SOIC-28 package is easy to assemble. The flexible serial output supports I2S, making it compatible with many audio codecs and DSPs. The device's low power consumption is suitable for battery-powered devices, and its commercial temperature range covers typical consumer operating conditions.
Recommended
Automotive Infotainment
Although the AD1877JRZ has a commercial temperature range, it can be used in automotive infotainment systems that operate within 0°C to 70°C, such as aftermarket head units. Its 92 dB dynamic range and 90 dB SNR provide high-quality audio for in-car entertainment, and the single 5 V supply is compatible with automotive power rails. The sigma-delta architecture is robust against electromagnetic interference, and the serial output can interface with automotive audio DSPs. However, for under-hood applications requiring extended temperature, an automotive-grade ADC is recommended. The device's low THD+N ensures clear audio in noisy environments.
Recommended
Security and Surveillance
The AD1877JRZ can be used in security and surveillance systems for audio monitoring, where capturing clear audio is essential. Its 92 dB dynamic range allows detection of quiet sounds, and the 90 dB SNR ensures low noise in recordings. The single 5 V supply is common in security equipment, and the serial output can be connected to a network processor for IP audio streaming. The device's low power consumption is beneficial for battery-backed systems, and the SOIC-28 package is suitable for compact PCB designs. The commercial temperature range covers indoor surveillance environments, and the sigma-delta architecture provides reliable performance over time.
Recommended
Recommended Products Summary
Engineering reference data for AD1877JRZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD1877JRZ-RL | AK4620B | CS4222 | PCM1804 |
|---|---|---|---|---|---|
| Package | SOIC-28 | SOIC-28 | SOIC-28 | SOIC-28 | SOIC-28 |
| Brand | Analog Devices | Analog Devices | Asahi Kasei Microdevices | Cirrus Logic | Texas Instruments |
| Resolution | 16 bit | 16 bit | 24 bit | 24 bit | 24 bit |
| Sampling Rate | 48 kSPS | 48 kSPS | 216 kSPS | 192 kSPS | 192 kSPS |
| Dynamic Range | 92 dB | 92 dB | 110 dB | 114 dB | 112 dB |
| Supply Voltage | 5 V | 5 V | 3.3 V | 5 V | 5 V |
| THD+N | 0.006 dB | 0.006 dB | -100 dB | -105 dB | -102 dB |
| Operating Temperature | 0°C to 70°C | 0°C to 70°C | -10°C to 70°C | -10°C to 70°C | -25°C to 85°C |
Key Differentiators
- Single 5V supply operation (vs AK4620B)
- Pin-compatible with common SOIC-28 audio ADCs (vs CS4222)
- Proven sigma-delta architecture (vs PCM1804)
Design Notes
The AD1877JRZ requires a single 5 V supply. Use separate analog and digital supply pins (AVDD and DVDD) with proper decoupling: place a 0.1 µF ceramic capacitor close to each supply pin, and a 10 µF tantalum capacitor for bulk decoupling. Connect AVSS and DGND to a common ground plane to minimize noise coupling. Ensure the supply is clean and stable, as noise on the supply can degrade the ADC's SNR.
For optimal performance, keep analog input traces short and shielded from digital signals. Use a ground plane under the ADC to reduce noise. Place the analog input filter components (if any) close to the VINL and VINR pins. The master clock (MCLK) should be routed with controlled impedance and kept away from analog inputs to avoid crosstalk. Follow the layout guidelines in the AD1877 datasheet for best results.
A common mistake is driving the analog inputs beyond the specified range of 0.5 V to 4.1 V, which can cause clipping and distortion. Ensure the input signal is biased around 2.5 V (mid-supply) using a suitable bias network. Also, verify that the serial output timing (MCLK, LRCLK, BCLK) matches the receiving device's requirements; incorrect timing can result in corrupted data. Finally, do not leave the PDWN pin floating; tie it to a defined logic level to avoid unintended power-down.
Compliance Information
RoHS compliant per Mouser product page. Not AEC-Q100 qualified; commercial temperature grade.
