Overview
The AD7478ARTZ-500RL7 is an 8-bit, high-speed, low-power successive approximation analog-to-digital converter (ADC) produced by Analog Devices Inc. This device operates from a single power supply ranging from 2.35 V to 5.25 V, making it versatile for various applications. The AD7478 features a throughput rate of up to 1 MSPS and includes a low noise, wide bandwidth track-and-hold amplifier capable of handling input frequencies exceeding 6 MHz.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Resolution | 8-bit | ||
| Throughput Rate | 1 MSPS | Maximum | |
| Power Supply Range | 2.35 V to 5.25 V | V | |
| Conversion Time | 800 ns | ns | Maximum, 16 SCLK cycles with SCLK at 20 MHz |
| Track-and-Hold Acquisition Time | 400 ns | ns | Maximum |
| Power Consumption (Normal Mode, Static) | 2 mA (typical) at VDD = 4.75 V to 5.25 V | mA | SCLK on or off |
| Power Consumption (Normal Mode, Operational) | 3.5 mA (maximum) at VDD = 4.75 V to 5.25 V, fSAMPLE = 1 MSPS | mA | |
| Package Type | 6-Lead SOT-23 | ||
| Operating Temperature Range | -40°C to +85°C | °C |
Key Features
- High Throughput Rate: Up to 1 MSPS, allowing for fast data conversion.
- Low Power Consumption: Advanced design techniques minimize power dissipation, especially at high throughput rates.
- Flexible Power and Serial Clock Speed Management: The conversion rate is determined by the serial clock, enabling reduced power consumption by adjusting the clock speed.
- Internal Reference: The reference voltage is taken internally from VDD, providing the widest dynamic input range from 0 V to VDD.
- No Pipeline Delays: The conversion process is initiated on the falling edge of the CS signal, with no pipeline delays.
- Compact Package: Available in a 6-Lead SOT-23 package, making it suitable for space-constrained applications.
Applications
The AD7478ARTZ-500RL7 is suitable for a variety of applications requiring high-speed, low-power analog-to-digital conversion. These include:
- Industrial Automation: For monitoring and controlling industrial processes.
- Medical Devices: In medical equipment that requires precise and fast data acquisition.
- Aerospace and Defense: For applications where low power consumption and high reliability are critical.
- Consumer Electronics: In devices such as audio and video equipment, and other consumer products requiring analog-to-digital conversion.
Q & A
- What is the resolution of the AD7478ARTZ-500RL7?
The AD7478ARTZ-500RL7 has an 8-bit resolution.
- What is the operating voltage range of the AD7478ARTZ-500RL7?
The device operates from a single power supply ranging from 2.35 V to 5.25 V.
- What is the maximum throughput rate of the AD7478ARTZ-500RL7?
The maximum throughput rate is up to 1 MSPS.
- How is the conversion process initiated in the AD7478ARTZ-500RL7?
The conversion process is initiated on the falling edge of the CS signal.
- Does the AD7478ARTZ-500RL7 have pipeline delays?
No, there are no pipeline delays associated with this device.
- What is the package type of the AD7478ARTZ-500RL7?
The device is available in a 6-Lead SOT-23 package.
- What is the operating temperature range of the AD7478ARTZ-500RL7?
The operating temperature range is from -40°C to +85°C.
- How is the reference voltage for the AD7478ARTZ-500RL7 generated?
The reference voltage is taken internally from VDD.
- What is the typical power consumption of the AD7478ARTZ-500RL7 in normal mode?
The typical power consumption in normal mode (static) is 2 mA at VDD = 4.75 V to 5.25 V.
- Can the AD7478ARTZ-500RL7 be used in high-speed applications?
Yes, the device is designed for high-speed applications with a throughput rate of up to 1 MSPS.
