Overview
The AD9220AR, produced by Analog Devices Inc., is a high-performance, single-supply 12-bit analog-to-digital converter (ADC). This device is part of the AD9221/AD9223/AD9220 family, which offers a range of sampling rates and power consumption options. The AD9220AR is designed to provide true 12-bit linearity and excellent temperature drift performance, making it suitable for various applications requiring high accuracy and speed.
The device features a monolithic CMOS design with a novel architecture that achieves high resolution and speed at a fraction of the power consumption and cost of existing implementations. It includes an on-chip, high-performance, low-noise sample-and-hold amplifier and a programmable voltage reference, with the option to use an external reference for enhanced dc accuracy and temperature drift performance.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12 bits |
| Sampling Rate | 1.5 MSPS |
| Power Consumption | 59 mW |
| Supply Voltage | Single +5 V |
| Integral Nonlinearity Error | 0.5 LSB |
| Differential Nonlinearity Error | 0.3 LSB |
| Signal-to-Noise Ratio (SNR) | 70 dB |
| Spurious Free Dynamic Range (SFDR) | 86 dB |
| Package | 28-Lead SOIC (Wide) and 28-Lead SSOP |
| Operating Temperature Range | –40°C to +85°C |
Key Features
- Monolithic 12-bit ADC with on-chip sample-and-hold amplifier and programmable voltage reference.
- Flexible sampling rates: 1.5 MSPS for the AD9220AR.
- Low power consumption: 59 mW on a single +5 V supply.
- Excellent DC performance over temperature with 12-bit linearity.
- Excellent AC performance with better than 11.3 ENOB and low input-referred noise of 0.09 LSB rms.
- Differential input structure allowing for single-ended or differential inputs.
- Out-of-range indicator (OTR) for overflow detection.
- Output drivers compatible with 5 V or 3.3 V logic families.
Applications
The AD9220AR is well-suited for a variety of applications, including:
- Imaging systems: Due to its high accuracy and flexible input options.
- Communications systems: Especially those employing IF Down Conversion, where the SHA can achieve excellent dynamic performance beyond the specified Nyquist frequency.
- Medical systems: Where high precision and low noise are critical.
- Data-acquisition systems: Benefiting from the device's high sampling rate and low power consumption.
Q & A
- What is the resolution of the AD9220AR?
The AD9220AR has a resolution of 12 bits.
- What is the sampling rate of the AD9220AR?
The AD9220AR has a sampling rate of 1.5 MSPS.
- What is the power consumption of the AD9220AR?
The AD9220AR consumes 59 mW on a single +5 V supply.
- What types of input can the AD9220AR handle?
The AD9220AR can handle both single-ended and differential inputs.
- Does the AD9220AR have an out-of-range indicator?
Yes, the AD9220AR includes an out-of-range indicator (OTR) for overflow detection.
- What are the package options for the AD9220AR?
The AD9220AR is available in 28-Lead SOIC (Wide) and 28-Lead SSOP packages.
- What is the operating temperature range of the AD9220AR?
The operating temperature range of the AD9220AR is –40°C to +85°C.
- Can the AD9220AR be used in communication systems?
Yes, the AD9220AR is well-suited for communication systems, especially those employing IF Down Conversion.
- Is the AD9220AR compatible with different logic families?
Yes, the output drivers of the AD9220AR are compatible with 5 V or 3.3 V logic families.
- What is the architecture of the AD9220AR?
The AD9220AR uses a multistage differential pipelined architecture with digital output error correction logic.
