Overview
The AD1895AYRSZRL, produced by Analog Devices Inc., is a 24-bit, high-performance, single-chip asynchronous sample rate converter. Building on the success of its predecessor, the AD1890, the AD1895 offers enhanced performance and additional features. It is designed to handle sample rate conversions with high precision and low distortion, making it suitable for various audio applications. The device supports input and output sample rates up to 192 kHz and features a dynamic range of 128 dB (A-Weighted) and a THD + N range of –115 dB to –122 dB, depending on the sample rate and input frequency.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltages (VDD_CORE) | 3.3 V ± 5% | V | ||
| Supply Voltages (VDD_IO) | 5.0 V ± 10% | V | ||
| Input Voltage High (VIH) | 2.4 V | V | ||
| Input Voltage Low (VIL) | 0.8 V | V | ||
| Input Leakage (IIH @ VIH = 5 V) | +2 µA | A | ||
| Input Leakage (IIL @ VIL = 0 V) | –2 µA | A | ||
| Input Capacitance | 5 pF | 10 pF | pF | |
| Sample Rate | Up to 192 kHz | Hz | ||
| Dynamic Range | 128 dB (A-Weighted, 20 Hz to 20 kHz BW) | dB | ||
| THD + N | –115 dB to –122 dB | dB |
Key Features
- Automatically senses sample frequencies without programming required.
- Attenuates sample clock jitter.
- Supports 3.3 V to 5 V input and 3.3 V core supply voltages.
- Accepts 16-/18-/20-/24-bit data.
- Input/output sample rate ratios from 7.75:1 to 1:8.
- Bypass mode and multiple AD1895 TDM daisy-chain mode.
- Linear phase FIR filter and hardware controllable soft mute.
- Supports 256 × fS, 512 × fS, or 768 × fS master mode clock.
- Flexible 3-wire serial data port with left-justified, I2S, right-justified (16-, 18-, 20-, 24-bit), and TDM serial port modes.
- Master/slave input and output modes.
- 28-lead SSOP plastic package.
Applications
- Home theater systems.
- Automotive audio systems.
- DVD, DVD-R, CD-R.
- Set-top boxes.
- Digital audio effects processors.
Q & A
- What is the AD1895AYRSZRL? The AD1895AYRSZRL is a 24-bit, high-performance, single-chip asynchronous sample rate converter produced by Analog Devices Inc.
- What are the supported sample rates for the AD1895AYRSZRL? The device supports input and output sample rates up to 192 kHz.
- What is the dynamic range of the AD1895AYRSZRL? The dynamic range is 128 dB (A-Weighted, 20 Hz to 20 kHz BW).
- What are the THD + N specifications for the AD1895AYRSZRL? The THD + N range is from –115 dB to –122 dB, depending on the sample rate and input frequency.
- Does the AD1895AYRSZRL support multiple serial formats? Yes, it supports left-justified, I2S, right-justified (16-, 18-, 20-, 24-bit), and TDM serial port modes.
- What are the supply voltage requirements for the AD1895AYRSZRL? The device requires 3.3 V ± 5% for VDD_CORE and 5.0 V ± 10% for VDD_IO.
- What is the package type of the AD1895AYRSZRL? It comes in a 28-lead SSOP plastic package.
- Can the AD1895AYRSZRL operate in master/slave modes? Yes, it supports both master and slave input and output modes.
- What are some common applications of the AD1895AYRSZRL? Common applications include home theater systems, automotive audio systems, DVD, DVD-R, CD-R, set-top boxes, and digital audio effects processors.
- Does the AD1895AYRSZRL have a bypass mode? Yes, it includes a bypass mode and multiple AD1895 TDM daisy-chain mode.
