Overview
The AD7892AN-2 is a high-speed, low-power, 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This component operates from a single +5 V supply, making it ideal for low power and portable applications. The AD7892AN-2 features a successive approximation ADC, an on-chip track/hold amplifier, and an internal +2.5 V reference. It also includes versatile interface structures that allow both serial and parallel connections to microprocessors, microcontrollers, and digital signal processors.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 12 |
| Sampling Rate (Per Second) | 500 kSPS |
| Number of Inputs | 2 |
| Input Type | Single Ended |
| Data Interface | SPI, Parallel |
| Configuration | S/H-ADC |
| Ratio - S/H:ADC | 1:1 |
| Number of A/D Converters | 1 |
| Architecture | SAR (Successive Approximation Register) |
| Reference Type | External, Internal |
| Voltage - Supply, Analog | +5 V |
| Voltage - Supply, Digital | +5 V |
| Operating Temperature | -40°C to +85°C |
| Package / Case | 24-lead, 0.3" wide, plastic or hermetic DIP or 24-lead SOIC |
| Conversion Time | 1.47 µs |
| Track/Hold Acquisition Time | 200 ns |
Key Features
- Fast Conversion Rate: The AD7892AN-2 has a conversion time of 1.47 µs and a throughput rate of 500 kSPS, making it suitable for high-speed applications.
- Low Power Consumption: It consumes 60 mW typically, which is ideal for low power and portable applications.
- Flexible Interface: The component offers both serial and parallel interfaces, allowing easy connection to microprocessors, microcontrollers, and digital signal processors.
- Internal Reference and Overvoltage Protection: It includes an internal +2.5 V reference and overvoltage protection on the analog inputs, allowing input voltages up to ±17 V or ±7 V without damage.
- High Accuracy and Dynamic Performance: Specified for both dc accuracy and dynamic performance parameters such as linearity, full-scale and offset errors, harmonic distortion, and signal-to-noise ratio.
Applications
- Portable and Battery-Powered Devices: Due to its low power consumption, it is suitable for use in portable and battery-powered devices.
- Industrial Automation: The high speed and accuracy make it a good choice for industrial automation applications.
- Medical Devices: Its precision and reliability are beneficial in medical device applications.
- Aerospace and Defense: The component's robustness and wide operating temperature range make it suitable for aerospace and defense applications.
Q & A
- What is the conversion time of the AD7892AN-2?
The conversion time of the AD7892AN-2 is 1.47 µs.
- What is the throughput rate of the AD7892AN-2?
The throughput rate of the AD7892AN-2 is 500 kSPS.
- What is the operating voltage of the AD7892AN-2?
The AD7892AN-2 operates from a single +5 V supply.
- What types of interfaces does the AD7892AN-2 support?
The AD7892AN-2 supports both serial (SPI) and parallel interfaces.
- What is the input voltage range for the AD7892AN-2?
The AD7892AN-2 handles an analog input range of 0 V to +2.5 V.
- Does the AD7892AN-2 have overvoltage protection?
No, the AD7892AN-2 does not have overvoltage protection for its specific model, but other models in the series do.
- What is the power consumption of the AD7892AN-2?
The AD7892AN-2 consumes 60 mW typically.
- What is the operating temperature range of the AD7892AN-2?
The operating temperature range of the AD7892AN-2 is -40°C to +85°C.
- What package types are available for the AD7892AN-2?
The AD7892AN-2 is available in 24-lead, 0.3" wide, plastic or hermetic DIP or 24-lead SOIC packages.
- Does the AD7892AN-2 have an internal reference?
Yes, the AD7892AN-2 includes an internal +2.5 V reference.
