Overview
The AD7291BCPZ-RL7, produced by Analog Devices Inc., is an 8-channel, 12-bit Successive Approximation Register (SAR) Analog-to-Digital Converter (ADC) with an integrated temperature sensor. This device operates from a single 3.3 V power supply and features an I2C-compatible interface, supporting both standard and fast I2C modes. The AD7291 is designed for high accuracy and efficiency, making it suitable for a variety of applications, including industrial, medical, and defense sectors.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 8 |
| Resolution | 12 bits |
| Conversion Rate | Up to 400 kSPS |
| Power Supply | 3.3 V |
| Interface | I2C (standard and fast modes) |
| Temperature Sensor Resolution | 0.25°C |
| Package | 20-Lead LFCSP (4mm x 4mm w/ EP) |
| Operating Temperature Range | -40°C to +125°C |
Key Features
- I2C Interface: Supports standard and fast I2C modes for flexible communication.
- Programmable Sequencer: Allows the selection of a preprogrammable sequence of channels for conversion.
- On-Chip Temperature Sensor: High accuracy band gap temperature sensor with 0.25°C resolution.
- Limit Registers and ALERT Output: Programmable high and low limits for conversion results with an out-of-range indicator output.
- Power Management: Partial power-down state while not converting to reduce power consumption.
- External Reference Option: On-chip 2.5 V reference can be disabled to use an external reference.
Applications
- Industrial Automation: For monitoring and controlling various industrial processes.
- Medical Devices: Suitable for medical equipment requiring high accuracy and reliability.
- Defense and Aerospace: Compliant with AQEC standards, making it suitable for defense and aerospace applications.
- Automotive Systems: For various automotive applications requiring precise analog-to-digital conversion.
Q & A
- What is the resolution of the AD7291 ADC?
The AD7291 has a resolution of 12 bits.
- What type of interface does the AD7291 use?
The AD7291 uses an I2C-compatible interface, supporting both standard and fast I2C modes.
- What is the power supply voltage for the AD7291?
The AD7291 operates from a single 3.3 V power supply.
- Does the AD7291 have an integrated temperature sensor?
Yes, the AD7291 includes a high accuracy band gap temperature sensor with 0.25°C resolution.
- Can the AD7291 be used in defense and aerospace applications?
Yes, the AD7291 supports defense and aerospace applications and is compliant with AQEC standards.
- What is the package type for the AD7291BCPZ-RL7?
The AD7291BCPZ-RL7 comes in a 20-Lead LFCSP (4mm x 4mm w/ EP) package.
- Does the AD7291 have programmable limit registers?
Yes, the AD7291 includes programmable limit registers with an out-of-range indicator output (ALERT).
- Can the AD7291 use an external reference voltage?
Yes, the on-chip 2.5 V reference can be disabled to allow the use of an external reference voltage.
- What is the operating temperature range for the AD7291?
The operating temperature range for the AD7291 is -40°C to +125°C.
- Does the AD7291 support partial power-down mode?
Yes, the AD7291 normally remains in a partial power-down state while not converting to reduce power consumption.
