Overview
The AD9281ARSZRL is a high-performance, dual 8-bit analog-to-digital converter (ADC) manufactured by Analog Devices Inc. This component is designed for applications requiring high-speed and accurate analog-to-digital conversion. The AD9281 operates on a single supply voltage ranging from 2.7 V to 5.5 V and consumes 225 mW of power at 3 V supply. It features a compact 28-lead SSOP package, making it suitable for space-constrained designs.
Key Specifications
| Parameter | Value | Units | Condition |
|---|---|---|---|
| Resolution | 8 Bits | ||
| Conversion Rate | 28 MSPS (32 MSPS at +25°C) | AVDD = +3 V, DVDD = +3 V, FSAMPLE = 28 MSPS, VREF = 2 V, INB = 0.5 V | |
| Supply Voltage | 2.7 V to 5.5 V | V | |
| Power Consumption | 225 mW | mW | At 3 V supply |
| Package Type | 28-Lead SSOP | ||
| Operating Temperature | -40°C to +85°C | °C | |
| Integral Nonlinearity (INL) | ±1.5 LSB | LSB | |
| Differential Nonlinearity (DNL) | ±1 LSB | LSB |
Key Features
- Dual 8-Bit ADCs: The AD9281 features two high-performance 8-bit ADCs optimized for spurious-free dynamic performance, suitable for encoding I and Q or diversity channel information.
- Low Power Consumption: The device operates on a single supply voltage and consumes a low 225 mW of power at 3 V supply.
- On-Chip Voltage Reference: Includes an on-chip compensated bandgap voltage reference that can be programmed for 1 V or 2 V.
- On-Chip Analog Input Buffers: Eliminates the need for external op amps in most applications.
- Single 8-Bit Digital Output Bus: The ADC outputs are interleaved onto a single output bus, saving board space and digital pin count.
- Compact Package: Available in a compact 28-lead SSOP package.
- Input Structure: Accepts either single-ended or differential input signals, providing excellent dynamic performance up to and beyond 14 MHz Nyquist input frequencies.
Applications
- Wireless Communication Systems: Ideal for baseband processing in wireless communication systems due to its ability to handle I and Q channel information.
- Medical Imaging: Suitable for medical imaging applications requiring high-speed and accurate analog-to-digital conversion.
- Industrial Automation: Used in industrial automation for high-speed data acquisition and control systems.
- Aerospace and Defense: Applied in aerospace and defense systems for signal processing and data acquisition.
Q & A
- What is the resolution of the AD9281ARSZRL ADC?
The AD9281ARSZRL has a resolution of 8 bits.
- What is the maximum conversion rate of the AD9281ARSZRL?
The maximum conversion rate is 28 MSPS (32 MSPS at +25°C).
- What is the power consumption of the AD9281ARSZRL at 3 V supply?
The power consumption is 225 mW at 3 V supply.
- What type of package does the AD9281ARSZRL come in?
The AD9281ARSZRL comes in a 28-lead SSOP package.
- Does the AD9281ARSZRL require external op amps for input signals?
No, the AD9281ARSZRL includes on-chip analog input buffers that eliminate the need for external op amps in most applications.
- What is the operating temperature range of the AD9281ARSZRL?
The operating temperature range is -40°C to +85°C.
- Can the AD9281ARSZRL handle both single-ended and differential input signals?
- What is the purpose of the on-chip voltage reference in the AD9281ARSZRL?
The on-chip voltage reference provides a stable reference voltage that can be programmed for 1 V or 2 V, ensuring consistent performance across both ADC channels.
- How are the ADC outputs of the AD9281ARSZRL configured?
The ADC outputs are interleaved onto a single 8-bit digital output bus, saving board space and reducing digital pin count.
- Is the AD9281ARSZRL RoHS compliant?
