Overview
The AD7478ARTZ-REEL7 is an 8-bit, successive approximation register (SAR) analog-to-digital converter (ADC) produced by Analog Devices Inc. This component is notable for its high throughput and low power consumption, making it suitable for a variety of applications requiring efficient analog-to-digital conversion. The AD7478 is packaged in a compact 6-lead SOT-23 package, enhancing its usability in space-constrained designs.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| VDD Range | 2.35 to 5.25 | V | Power supply input range |
| Analog Input Range | 0 to VDD | V | Single-ended analog input range |
| Conversion Time | 800 ns max | ns | At 16 SCLK cycles with SCLK at 20 MHz |
| Throughput Rate | 1 MSPS max | MSPS | Maximum throughput rate |
| Track-and-Hold Acquisition Time | 400 ns max | ns | |
| Power Consumption (Normal Mode, Static) | 2 mA typ (VDD = 4.75 to 5.25 V) | mA | SCLK on or off |
| Power Consumption (Normal Mode, Operational) | 3.5 mA max (VDD = 4.75 to 5.25 V, fSAMPLE = 1 MSPS) | mA | |
| Output Low Voltage (VOL) | 0.4 V max | V | ISINK = 200 μA |
| Floating-State Leakage Current | ±10 μA max | μA | |
| Floating-State Output Capacitance | 10 pF max | pF | |
| Operating Temperature Range | -40°C to +85°C | °C |
Key Features
- High Throughput with Low Power Consumption: The AD7478 achieves high throughput rates of up to 1 MSPS while maintaining low power consumption, making it efficient for various applications.
- Flexible Power/Serial Clock Speed Management: The conversion rate can be adjusted by the serial clock speed, allowing for reduced power consumption during idle periods.
- Compact Packaging: The component is packaged in a 6-lead SOT-23 package, ideal for space-constrained designs.
- 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 associated with the conversion.
Applications
The AD7478ARTZ-REEL7 is suitable for a variety of applications, including:
- Industrial Automation: For monitoring and controlling analog signals in industrial environments.
- Medical Devices: For converting analog signals in medical equipment where precision and low power consumption are critical.
- Consumer Electronics: For applications requiring efficient analog-to-digital conversion, such as in audio and video devices.
- Aerospace and Defense: For systems requiring high reliability and low power consumption.
Q & A
- What is the resolution of the AD7478ARTZ-REEL7 ADC?
The AD7478ARTZ-REEL7 is an 8-bit ADC. - What is the maximum throughput rate of the AD7478ARTZ-REEL7?
The maximum throughput rate is 1 MSPS. - What is the operating temperature range of the AD7478ARTZ-REEL7?
The operating temperature range is -40°C to +85°C. - How is the conversion rate controlled in the AD7478ARTZ-REEL7?
The conversion rate is controlled by the serial clock (SCLK) speed. - What is the power supply input range for the AD7478ARTZ-REEL7?
The power supply input range is from 2.35 V to 5.25 V. - What is the analog input range for the AD7478ARTZ-REEL7?
The analog input range is from 0 V to VDD. - Does the AD7478ARTZ-REEL7 have any pipeline delays?
No, there are no pipeline delays associated with the conversion process. - How is the reference voltage generated for the AD7478ARTZ-REEL7?
The reference voltage is taken internally from VDD. - What is the typical power consumption of the AD7478ARTZ-REEL7 in normal mode?
The typical power consumption in normal mode (static) is 2 mA at VDD = 4.75 to 5.25 V. - What package type is the AD7478ARTZ-REEL7 available in?
The AD7478ARTZ-REEL7 is packaged in a 6-lead SOT-23 package.
