Overview
The AD7899BR-1 is a 14-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This component operates from a single 5V supply and is designed for high-speed, low-power applications. It features a successive-approximation (SAR) architecture and includes a track/hold amplifier, a 2.5V reference, and an on-chip clock oscillator. The AD7899BR-1 is available in a 28-lead SOIC package and supports various analog input ranges, making it versatile for different industrial and portable applications.
Key Specifications
| Parameter | Value | Unit/Description |
|---|---|---|
| Manufacturer | Analog Devices Inc. | |
| Part Number | AD7899BR-1 | |
| Number of Bits | 14 | |
| Sampling Rate (Per Second) | 400k | SPS |
| Number of Inputs | 1 | |
| Input Type | Single Ended | |
| Data Interface | Parallel | |
| Configuration | S/H-ADC | |
| Architecture | SAR | |
| Reference Type | External, Internal | |
| Voltage - Supply, Analog | 5V | |
| Voltage - Supply, Digital | 5V | |
| Operating Temperature | -40°C ~ 85°C | |
| Package / Case | 28-SOIC (0.295", 7.50mm Width) | |
| Mounting Type | Surface Mount | |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Key Features
- High-Speed Conversion: The AD7899BR-1 features a fast 2.2 µs successive-approximation ADC, allowing throughput rates of up to 400 kSPS.
- Low Power Consumption: Operates from a single 5V supply and consumes only 80 mW typical, making it ideal for low-power and portable applications.
- Flexible Input Ranges: Supports various analog input ranges including ±10 V, ±5 V, ±2.5 V, 0 V to 2.5 V, and 0 V to 5 V.
- High-Speed Parallel Interface: Allows interfacing to both 3 V and 5 V microprocessors, microcontrollers, and digital signal processors.
- Overvoltage Protection: Protects the analog inputs from overvoltage conditions without damaging the part.
- Power-Down Mode: Features a power-down mode via the STBY pin, reducing power consumption to 20 µW typical.
Applications
The AD7899BR-1 is suitable for a variety of applications, including:
- Industrial Automation: For high-speed data acquisition in industrial control systems.
- Medical Devices: For precise and fast analog-to-digital conversion in medical equipment.
- Portable Electronics: Ideal for battery-powered devices due to its low power consumption.
- Test and Measurement Equipment: For high-speed data acquisition and analysis.
- Aerospace and Defense: For applications requiring high reliability and precision.
Q & A
- What is the resolution of the AD7899BR-1?
The AD7899BR-1 has a resolution of 14 bits.
- What is the sampling rate of the AD7899BR-1?
The AD7899BR-1 has a sampling rate of up to 400 kSPS.
- What is the supply voltage for the AD7899BR-1?
The AD7899BR-1 operates from a single 5V supply for both analog and digital sections.
- What is the operating temperature range of the AD7899BR-1?
The operating temperature range is -40°C to 85°C.
- Does the AD7899BR-1 have overvoltage protection?
Yes, the AD7899BR-1 has overvoltage protection on the analog inputs.
- What is the package type of the AD7899BR-1?
The AD7899BR-1 is available in a 28-lead SOIC package.
- Can the AD7899BR-1 be used with 3V microprocessors?
Yes, the AD7899BR-1 has a high-speed parallel interface that can operate with both 3V and 5V microprocessors.
- What is the power consumption of the AD7899BR-1 in normal operation?
The AD7899BR-1 consumes 80 mW typical in normal operation.
- Does the AD7899BR-1 have a power-down mode?
Yes, the AD7899BR-1 has a power-down mode via the STBY pin, reducing power consumption to 20 µW typical.
- What are the available input ranges for the AD7899BR-1?
The AD7899BR-1 supports input ranges of ±10 V, ±5 V, ±2.5 V, 0 V to 2.5 V, and 0 V to 5 V.
