Overview
The AD7892BR-1 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 and is designed for applications requiring fast data acquisition. The AD7892BR-1 features a successive approximation ADC, an on-chip track/hold amplifier, and an internal +2.5 V reference, making it versatile for various signal processing tasks.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 12-bit |
| Sampling Rate | 500 kSPS |
| Input Type | Single-Ended |
| Input Voltage Range | ±5 V or ±10 V |
| Supply Voltage (Analog/Digital) | +5 V |
| Operating Temperature | -40°C to +85°C |
| Conversion Time | 1.47 µs (AD7892-3), 1.6 µs (AD7892-1 and AD7892-2) |
| Track/Hold Acquisition Time | 200 ns |
| Data Interface | Parallel, SPI |
| Package/Case | 24-SOIC, PDIP-24 |
| DNL (Differential Nonlinearity) | ±1 LSB |
| INL (Integral Nonlinearity) | ±1.5 LSB |
Key Features
- High-speed conversion with throughput rates up to 500 kSPS.
- Low power consumption of 60 mW typical, making it ideal for portable applications.
- Flexible interface options including parallel and serial interfaces for easy connection to microprocessors, microcontrollers, and digital signal processors.
- On-chip track/hold amplifier and internal +2.5 V reference.
- Overvoltage protection on analog inputs for AD7892-1 and AD7892-3 models.
- Compact packaging in 24-lead SOIC or PDIP.
Applications
- Fast data acquisition systems.
- Portable and battery-powered devices.
- Industrial control systems.
- Medical devices requiring high-speed and low-power ADCs.
- Aerospace and defense applications where high reliability and performance are critical.
Q & A
- What is the resolution of the AD7892BR-1 ADC?
The AD7892BR-1 has a 12-bit resolution.
- What is the maximum sampling rate of the AD7892BR-1?
The maximum sampling rate is 500 kSPS.
- What are the input voltage ranges for the AD7892BR-1?
The input voltage ranges are ±5 V or ±10 V.
- What is the supply voltage for the AD7892BR-1?
The supply voltage is +5 V for both analog and digital supplies.
- What are the operating temperature ranges for the AD7892BR-1?
The operating temperature range is -40°C to +85°C.
- What types of interfaces does the AD7892BR-1 support?
The AD7892BR-1 supports both parallel and serial (SPI) interfaces.
- What is the conversion time for the AD7892BR-1?
The conversion time is approximately 1.6 µs for AD7892-1 and AD7892-2 models.
- Does the AD7892BR-1 have overvoltage protection?
Yes, the AD7892-1 and AD7892-3 models have overvoltage protection on the analog inputs.
- What are the typical power consumption and package options for the AD7892BR-1?
The typical power consumption is 60 mW, and it is available in 24-lead SOIC or PDIP packages.
- Is the AD7892BR-1 still in production?
No, the AD7892BR-1 is obsolete and no longer manufactured.
