Overview
The AD7475AR, manufactured by Analog Devices Inc., is a 12-bit high-speed, low-power successive-approximation analog-to-digital converter (ADC). This component is designed to convert analog signals into digital signals, making it suitable for various applications that require precise and efficient data conversion. The AD7475AR operates from a single 2.7 V to 5.25 V power supply and features a throughput rate of up to 1 MSPS (million samples per second), making it ideal for high-speed data acquisition systems.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 12 |
| Sampling Rate | 1 MSPS (million samples per second) |
| Data Interface | SPI, DSP, QSPI, MICROWIRE |
| Number of A/D Converters | 1 |
| Operating Temperature | -40°C to +85°C |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| Power Consumption | 4.5 mW (max) at 1 MSPS with 3 V supply, 10.5 mW (max) at 1 MSPS with 5 V supply |
| Standby Mode Power Consumption | 1 µA (max) |
Key Features
- High throughput rate of up to 1 MSPS with low power consumption.
- Single-supply operation with VDRIVE function, allowing the serial interface to connect directly to either 3 V or 5 V processor systems.
- Flexible power and serial clock speed management, enabling reduced conversion time through increased serial clock speed and featuring shutdown modes for power efficiency.
- No pipeline delays, with accurate control of the sampling instant via a CS input and once-off conversion control.
- High-speed serial interface compatible with SPI, QSPI, MICROWIRE, and DSP.
- On-board reference (for AD7495 model, though the AD7475 requires an external reference).
- Low-noise, wide bandwidth track/hold amplifier capable of handling input frequencies in excess of 1 MHz.
Applications
- Battery-powered systems
- Personal digital assistants
- Medical instruments
- Mobile communications
- Instrumentation and control systems
- Data acquisition systems
- High-speed modems
- Optical sensors
- Communication systems
- Industrial control
- Measuring instruments
- Consumer electronics
- Acquisition systems
- Automotive electronics
Q & A
- What is the AD7475AR used for?
The AD7475AR is used to convert analog signals into digital signals, making it suitable for various applications requiring high-speed and precise data conversion.
- What is the sampling rate of the AD7475AR?
The AD7475AR has a sampling rate of up to 1 MSPS (million samples per second).
- What are the operating temperature ranges for the AD7475AR?
The operating temperature range for the AD7475AR is -40°C to +85°C.
- What types of interfaces does the AD7475AR support?
The AD7475AR supports SPI, DSP, QSPI, and MICROWIRE interfaces.
- How much power does the AD7475AR consume?
The AD7475AR consumes a maximum of 4.5 mW at 1 MSPS with a 3 V supply and 10.5 mW at 1 MSPS with a 5 V supply.
- Does the AD7475AR have any pipeline delays?
No, the AD7475AR does not have any pipeline delays.
- What is the package type of the AD7475AR?
The AD7475AR is packaged in an 8-SOIC (0.154", 3.90mm Width) package.
- What are some common applications of the AD7475AR?
Common applications include battery-powered systems, medical instruments, mobile communications, and data acquisition systems.
- Does the AD7475AR have an on-board reference voltage?
No, the AD7475AR requires an external reference voltage, while the AD7495 model has an on-board 2.5 V reference.
- How does the AD7475AR manage power efficiency?
The AD7475AR features shutdown modes to maximize power efficiency at lower throughput rates, reducing average power consumption to as low as 1 µA in full shutdown.
