Overview
The AD7854AQ is a high-speed, low-power, 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This device operates from a single 3 V or 5 V power supply and is optimized for speed, making it suitable for a variety of applications requiring high throughput and low power consumption. The AD7854AQ features self-calibration and system calibration options to ensure accurate operation over time and temperature, and it includes several power-down options for low power applications.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12 bits |
| Sampling Rate | 200 kSPS |
| Power Supply | 3 V to 5 V |
| Power Consumption (Typical) | 15 mW @ 3 V, 1.3 mW @ 10 kSPS |
| Operating Temperature | –40°C to +85°C |
| Input Voltage Range | 0 to VREF (unipolar), –VREF/2 to +VREF/2 (bipolar) |
| Input Track-and-Hold Acquisition Time | 500 ns |
| Package Types | 28-Lead DIP, SOIC, SSOP |
| Interface | Flexible Parallel Interface (12-Bit/8-Bit Parallel) |
Key Features
- High-speed operation with a throughput rate of 200 kSPS.
- Low power consumption with automatic power-down after conversion (1.3 mW typical at 10 kSPS).
- Self-calibration and system calibration for accurate operation over time and temperature.
- Flexible power management options.
- Operates with reference voltages from 1.2 V to AVDD.
- Analog input ranges from 0 V to AVDD.
- Versatile parallel I/O port.
- Pseudo-differential sampling scheme.
Applications
- Battery-powered systems (personal digital assistants, medical instruments, mobile communications).
- Pen computers.
- Instrumentation and control systems.
- High-speed modems.
Q & A
- What is the resolution of the AD7854AQ? The AD7854AQ has a resolution of 12 bits.
- What is the sampling rate of the AD7854AQ? The AD7854AQ has a sampling rate of 200 kSPS.
- What are the power supply options for the AD7854AQ? The AD7854AQ operates from a single 3 V or 5 V power supply.
- What is the typical power consumption of the AD7854AQ at 10 kSPS? The typical power consumption is 1.3 mW at 10 kSPS.
- What are the operating temperature ranges for the AD7854AQ? The operating temperature range is –40°C to +85°C.
- What types of calibration does the AD7854AQ support? The AD7854AQ supports self-calibration and system calibration.
- What is the input track-and-hold acquisition time of the AD7854AQ? The input track-and-hold acquisition time is 500 ns.
- What are the package types available for the AD7854AQ? The AD7854AQ is available in 28-Lead DIP, SOIC, and SSOP packages.
- What type of interface does the AD7854AQ use? The AD7854AQ uses a flexible parallel interface (12-Bit/8-Bit Parallel).
- What are some common applications of the AD7854AQ? Common applications include battery-powered systems, pen computers, instrumentation and control systems, and high-speed modems.
