Overview
The AD7478WARTZ-RL7 is an 8-bit, high-speed, low-power successive approximation analog-to-digital converter (ADC) produced by Analog Devices Inc. This component operates from a single power supply ranging from 2.35 V to 5.25 V and features a throughput rate of up to 1 MSPS. It includes a low noise, wide bandwidth track-and-hold amplifier capable of handling input frequencies exceeding 6 MHz. The ADC is designed for interface with microprocessors or DSPs, controlled by the chip select (CS) and serial clock (SCLK) inputs.
Key Specifications
| Parameter | Value | Unit | Test Conditions/Comments |
|---|---|---|---|
| Resolution | 8 Bits | ||
| VDD Range | 2.35 V to 5.25 V | V | |
| Conversion Time | 800 ns max (16 SCLK cycles at 20 MHz) | ns | fSCLK = 20 MHz |
| Throughput Rate | 1 MSPS max | S/s | |
| Track-and-Hold Acquisition Time | 400 ns max | ns | |
| Aperture Delay | 10 ns typ | ns | |
| Aperture Jitter | 30 ps typ | ps | |
| Full Power Bandwidth | 6.5 MHz typ at 3 dB | MHz | |
| Signal-to-Noise-and-Distortion (SINAD) | 61 dB min | dB | fIN = 100 kHz sine wave, fSAMPLE = 1 MSPS |
| Total Harmonic Distortion (THD) | -73 dB max | dB | fIN = 100 kHz sine wave, fSAMPLE = 1 MSPS |
| Peak Harmonic or Spurious Noise (SFDR) | -74 dB max | dB | fIN = 100 kHz sine wave, fSAMPLE = 1 MSPS |
| Power Consumption (Normal Mode, Operational) | 3.5 mA max (VDD = 4.75 V to 5.25 V, fSAMPLE = 1 MSPS) | mA | VDD = 4.75 V to 5.25 V, fSAMPLE = 1 MSPS |
| Package | SOT23-6 |
Key Features
- High throughput with low power consumption, achieving up to 1 MSPS conversion rate.
- Flexible power and serial clock speed management, allowing for reduced conversion time and power consumption through increased serial clock speed.
- Low noise, wide bandwidth track-and-hold amplifier capable of handling input frequencies exceeding 6 MHz.
- No pipeline delays, ensuring direct and efficient data acquisition.
- Internal reference taken from VDD, providing the widest dynamic input range from 0 V to VDD.
- Compact SOT23-6 package, suitable for space-constrained applications.
- Compatibility with various microcontrollers via SPI interface.
- High precision and speed, with superior performance among similar ICs.
Applications
- Embedded systems requiring high-speed, low-power analog-to-digital conversion.
- Industrial control and automation systems.
- Medical devices and diagnostic equipment.
- Aerospace and defense applications where low power and high precision are critical.
- Automotive systems, including sensor interfaces and data acquisition.
- Consumer electronics, such as audio and video processing devices.
Q & A
- What is the resolution of the AD7478WARTZ-RL7 ADC?
The AD7478WARTZ-RL7 has an 8-bit resolution.
- What is the operating voltage range of the AD7478WARTZ-RL7?
The operating voltage range is from 2.35 V to 5.25 V.
- What is the maximum throughput rate of the AD7478WARTZ-RL7?
The maximum throughput rate is 1 MSPS.
- How is the conversion process controlled in the AD7478WARTZ-RL7?
The conversion process is controlled using the chip select (CS) and serial clock (SCLK) inputs.
- What is the full power bandwidth of the track-and-hold amplifier?
The full power bandwidth is 6.5 MHz at 3 dB.
- What is the typical aperture delay of the AD7478WARTZ-RL7?
The typical aperture delay is 10 ns.
- What is the package type of the AD7478WARTZ-RL7?
The package type is SOT23-6.
- How does the AD7478WARTZ-RL7 manage power consumption?
The power consumption can be managed by adjusting the serial clock speed, allowing for reduced power consumption during non-conversion periods.
- What are some common applications of the AD7478WARTZ-RL7?
Common applications include embedded systems, industrial control, medical devices, aerospace, automotive systems, and consumer electronics.
- Is the AD7478WARTZ-RL7 compatible with microcontrollers?
Yes, it is compatible with various microcontrollers via the SPI interface.
