Overview
The AD7899AR-1 is a high-performance, 14-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This component operates from a single 5 V supply and is designed for low-power and high-speed applications. It features a successive-approximation ADC with a track/hold amplifier, an on-chip clock oscillator, and a high-speed parallel interface. The AD7899AR-1 is suitable for various industrial and portable applications due to its low power consumption and robust performance characteristics.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Resolution | 14 | Bits | |
| Throughput Rate | 400 kSPS | ||
| Conversion Time | 2.2 µs | ||
| Track/Hold Acquisition Time | 0.3 µs | ||
| Input Voltage Ranges | ±10 V, ±5 V, ±2.5 V, 0 V to 2.5 V, 0 V to 5 V | ||
| Power Supply | 5 V | Single supply operation | |
| Power Consumption | 80 mW (typ) | Normal operation | |
| Power Consumption (Power-Down) | 20 µW (typ) | Power-saving mode | |
| Operating Temperature Range | -40°C to +85°C | ||
| Package Type | 28-lead SOIC and SSOP |
Key Features
- Fast conversion time of 2.2 µs, allowing throughput rates of up to 400 kSPS.
- Low power consumption of 80 mW (typ) and a power-saving mode of 20 µW (typ).
- High-speed parallel interface compatible with both 3 V and 5 V processors.
- Overvoltage protection on analog inputs.
- Selection of input ranges: ±10 V, ±5 V, ±2.5 V, 0 V to 2.5 V, and 0 V to 5 V.
- Internal clock oscillator or external clock option.
Applications
The AD7899AR-1 is suitable for a variety of applications, including industrial control systems, medical devices, and portable instrumentation. Its low power consumption and high-speed conversion make it ideal for battery-powered devices and systems requiring high accuracy and fast data acquisition.
Q & A
- What is the resolution of the AD7899AR-1 ADC?
The AD7899AR-1 has a resolution of 14 bits. - What is the maximum throughput rate of the AD7899AR-1?
The maximum throughput rate is 400 kSPS. - What are the available input voltage ranges for the AD7899AR-1?
The available input voltage ranges are ±10 V, ±5 V, ±2.5 V, 0 V to 2.5 V, and 0 V to 5 V. - How much power does the AD7899AR-1 consume in normal operation?
The AD7899AR-1 consumes 80 mW (typ) in normal operation. - Does the AD7899AR-1 have overvoltage protection?
Yes, the AD7899AR-1 has overvoltage protection on its analog inputs. - What types of packages are available for the AD7899AR-1?
The AD7899AR-1 is available in 28-lead SOIC and SSOP packages. - Can the AD7899AR-1 be used with 3 V processors?
Yes, the high-speed parallel interface of the AD7899AR-1 is compatible with both 3 V and 5 V processors. - What is the operating temperature range of the AD7899AR-1?
The operating temperature range is -40°C to +85°C. - Is the AD7899AR-1 still in production?
No, the AD7899AR-1 is obsolete and no longer manufactured, but substitutes are available. - How long does the conversion process take for the AD7899AR-1?
The conversion time is 2.2 µs.
