Overview
The AD1937WBSTZ is a high-performance, single-chip codec produced by Analog Devices Inc. This integrated circuit provides four analog-to-digital converters (ADCs) with differential input and eight digital-to-analog converters (DACs) with differential output. It utilizes Analog Devices' patented multibit sigma-delta (Σ-Δ) architecture, ensuring high-quality audio conversion. The device operates from 3.3 V digital and analog supplies and is available in a 64-lead LQFP package. The AD1937 is designed to minimize EMI, making it suitable for a variety of applications requiring low electromagnetic interference.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 64-Lead LQFP (10mm x 10mm) |
| Number of ADCs/DACs | 4 ADCs / 8 DACs |
| Resolution | 24 bits |
| Supply Voltage (Analog/Digital) | 3 V ~ 3.6 V |
| Operating Temperature | -40°C ~ 125°C |
| Signal to Noise Ratio (SNR) | Typ 96 dB (ADCs), Typ 96 dB (DACs) |
| Dynamic Range | Typ 105 dB (ADCs), Typ 110 dB (DACs) |
| Interface | 2-Wire, I2C, I2S |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) |
| Lead Free Status / RoHS Status | Lead free / RoHS Compliant |
Key Features
- High-performance codec with four ADCs and eight DACs using multibit sigma-delta architecture.
- Differential input and output for improved noise and distortion performance.
- On-board PLL to derive the master clock from the LR (frame) clock or an external crystal, reducing the need for a separate high-frequency master clock.
- Low EMI design through the use of continuous time architecture and 3.3 V supplies.
- I2C port for microcontroller control of volume and other parameters.
- DAC channels arranged in four stereo pairs with independently programmable attenuators.
- On-board digital reconstruction filters with 70 dB stop-band attenuation and linear phase response.
Applications
The AD1937WBSTZ is suitable for various applications requiring high-quality audio conversion and low EMI. These include:
- Automotive audio systems: The AD1937WBSTZ models are available with controlled manufacturing to support the quality and reliability requirements of automotive applications.
- Professional audio equipment: Ideal for use in professional audio systems where high signal-to-noise ratio and dynamic range are critical.
- Consumer electronics: Suitable for use in consumer audio devices such as home theaters, soundbars, and high-end audio players.
- Industrial audio systems: Can be used in industrial settings where reliable and high-quality audio conversion is necessary.
Q & A
- What is the AD1937WBSTZ?
The AD1937WBSTZ is a high-performance, single-chip codec with four ADCs and eight DACs, designed for low EMI and high-quality audio conversion. - What is the package type of the AD1937WBSTZ?
The AD1937WBSTZ is available in a 64-lead LQFP package. - What are the supply voltage requirements for the AD1937WBSTZ?
The device operates from 3 V to 3.6 V for both analog and digital supplies. - What is the resolution of the ADCs and DACs in the AD1937WBSTZ?
The ADCs and DACs have a resolution of 24 bits. - What interfaces does the AD1937WBSTZ support?
The device supports 2-Wire, I2C, and I2S interfaces. - How does the AD1937WBSTZ minimize EMI?
The AD1937WBSTZ minimizes EMI through its continuous time architecture, 3.3 V supplies, and on-board PLL to derive the master clock from the LR (frame) clock or an external crystal. - What are the typical SNR and dynamic range of the ADCs and DACs in the AD1937WBSTZ?
The typical SNR is 96 dB for both ADCs and DACs, and the typical dynamic range is 105 dB for ADCs and 110 dB for DACs. - Is the AD1937WBSTZ RoHS compliant?
Yes, the AD1937WBSTZ is lead free and RoHS compliant. - What are some common applications of the AD1937WBSTZ?
The device is commonly used in automotive audio systems, professional audio equipment, consumer electronics, and industrial audio systems. - How does the AD1937WBSTZ support microcontroller control?
The device includes an I2C port that allows a microcontroller to adjust volume and other parameters.
