Overview
The AD1854JRSZ, manufactured by Analog Devices Inc., is a high-performance, single-chip stereo audio Digital-to-Analog Converter (DAC). This device is designed to deliver exceptional audio quality with a dynamic range of up to 113 dB and a Signal-to-Noise Ratio (SNR) of up to 112 dB at a 48 kHz sample rate. The AD1854JRSZ operates from a single 5 V power supply and is housed in a 28-lead SSOP package, making it suitable for a wide range of audio applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 20 | - | - | Bits |
| Sampling Rate | - | - | 96k | samples/sec |
| Signal-to-Noise Ratio (20 Hz to 20 kHz) | 105 | - | 112 | dB (A-weighted) |
| Dynamic Range (20 Hz to 20 kHz, –60 dB Input) | 105 | - | 113 | dB (A-weighted) |
| Total Harmonic Distortion + Noise (VO = 0 dB) | -88 | - | -97 | dB |
| Analog Output Range | - | - | 5.6 | V p-p |
| Output Impedance | - | - | 200 | Ω |
| Supply Voltage | 4.5 | 5 | 5.5 | V |
| Analog Current | 26 | 30 | 35 | mA |
| Digital Current | 14 | 17 | 20 | mA |
| Operating Temperature | 0 | - | 70 | °C |
Key Features
- High-Performance Audio: Delivers 113 dB dynamic range and 112 dB SNR at 48 kHz sample rate.
- Flexible Serial Data Input: Accepts data in twos-complement, MSB-first format with support for 16, 18, 20, or 24 bits.
- Multiple Data Interfaces: Supports DSP, I²S, and other formats for easy integration with various ADCs, DSP chips, and sample rate converters.
- Power-Down Mode: Minimizes power consumption when the device is inactive.
- Compact Packaging: Housed in a 28-lead SSOP package.
- Backwards Compatibility: Supports 50 µs/15 µs digital de-emphasis for “redbook” 44.1 kHz sample frequency playback.
Applications
- Professional Audio Equipment: Suitable for use in digital mixing consoles, audio workstations, and other high-end audio systems.
- Consumer Electronics: Ideal for home audio systems, CD players, and other consumer audio devices.
- Automotive Audio Systems: Can be used in high-quality car audio systems.
- Industrial Audio Applications: Applicable in various industrial settings requiring high-fidelity audio output.
Q & A
- What is the resolution of the AD1854JRSZ DAC?
The AD1854JRSZ has a resolution of 20 bits. - What is the maximum sampling rate of the AD1854JRSZ?
The maximum sampling rate is 96 kHz. - What is the typical SNR of the AD1854JRSZ at 48 kHz sample rate?
The typical SNR is up to 112 dB (A-weighted). - What is the power supply voltage range for the AD1854JRSZ?
The power supply voltage range is from 4.5 V to 5.5 V. - Does the AD1854JRSZ support power-down mode?
Yes, it supports a power-down mode to minimize power consumption when inactive. - What are the supported data interfaces for the AD1854JRSZ?
The device supports DSP, I²S, and other formats. - What is the operating temperature range for the AD1854JRSZ?
The operating temperature range is from 0°C to 70°C. - What is the package type of the AD1854JRSZ?
The device is housed in a 28-lead SSOP package. - Is the AD1854JRSZ backwards compatible with older audio standards?
Yes, it supports 50 µs/15 µs digital de-emphasis for “redbook” 44.1 kHz sample frequency playback. - What are some typical applications of the AD1854JRSZ?
It is suitable for professional audio equipment, consumer electronics, automotive audio systems, and industrial audio applications.
