Overview
The AD7940BRM-REEL7, produced by Analog Devices Inc., is a 14-bit, fast, and low-power successive approximation analog-to-digital converter (ADC). This component operates from a single power supply ranging from 2.50 V to 5.5 V and features throughput rates of up to 100 kSPS. It is designed with a low noise, wide bandwidth track-and-hold amplifier capable of handling input frequencies exceeding 7 MHz. The AD7940BRM is particularly suited for space-sensitive designs due to its compact 8-lead MSOP package.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 14 bits | |
| Sampling Rate | Up to 100 kSPS | |
| Supply Voltage | 2.50 V to 5.5 V | V |
| Power Consumption (Normal Mode) | 4.8 mA max (VDD = 5.5 V), 1.9 mA max (VDD = 3.6 V) | mA |
| Power Consumption (Full Power-Down Mode) | 0.5 µA max (VDD = 5.5 V), 0.3 µA max (VDD = 3.6 V) | µA |
| Operating Temperature | -40°C to +85°C | °C |
| Package Type | 8-lead MSOP | |
| Input Type | Single-ended | |
| Architecture | Successive Approximation (SAR) | |
| Sample and Hold | Yes | |
| Settling Time | 600 ns | ns |
Key Features
- High Throughput with Low Power Consumption: The AD7940BRM achieves throughput rates of up to 100 kSPS while maintaining low power dissipation, making it suitable for power-sensitive applications.
- Flexible Power and Serial Clock Management: The conversion rate is determined by the serial clock frequency, allowing for reduced power consumption in power-down modes.
- No Pipeline Delay: The conversion process is initiated on the falling edge of the CS input, with no pipelined delays associated with the part.
- Internal Reference: The reference voltage is derived from the power supply (VDD), allowing for the widest dynamic input range from 0 V to VDD.
- Compact Packaging: Available in a tiny 8-lead MSOP package, making it ideal for space-sensitive designs.
- Low Noise and Wide Bandwidth Track-and-Hold Amplifier: Capable of handling input frequencies exceeding 7 MHz.
Applications
- Communications: Suitable for various communication systems requiring high-speed and low-power data conversion.
- Industrial Automation: Used in industrial control systems where precise and fast data acquisition is necessary.
- Instrumentation and Measurement: Ideal for measurement instruments that require high-resolution and low-noise data conversion.
- Aerospace and Defense: Applied in aerospace and defense systems where reliability and performance are critical.
- Motor and Power Control: Used in motor control and power management systems that require accurate and fast data conversion.
- Healthcare: Suitable for medical devices that need high-resolution and low-power data conversion.
Q & A
- What is the resolution of the AD7940BRM?
The AD7940BRM has a resolution of 14 bits.
- What is the maximum sampling rate of the AD7940BRM?
The maximum sampling rate is up to 100 kSPS.
- What is the operating voltage range of the AD7940BRM?
The operating voltage range is from 2.50 V to 5.5 V.
- What is the power consumption in normal mode?
The power consumption in normal mode is up to 4.8 mA (VDD = 5.5 V) and up to 1.9 mA (VDD = 3.6 V).
- What is the power consumption in full power-down mode?
The power consumption in full power-down mode is 0.5 µA max (VDD = 5.5 V) and 0.3 µA max (VDD = 3.6 V).
- What is the operating temperature range of the AD7940BRM?
The operating temperature range is from -40°C to +85°C.
- What type of package does the AD7940BRM come in?
The AD7940BRM comes in an 8-lead MSOP package.
- Does the AD7940BRM have a sample and hold function?
Yes, the AD7940BRM includes a sample and hold function.
- What is the settling time of the AD7940BRM?
The settling time is 600 ns.
- How is the conversion rate controlled in the AD7940BRM?
The conversion rate is determined by the serial clock frequency.
