Overview
The AD4022BRMZ-RL7 is a high-accuracy, high-speed, low-power 20-bit successive approximation register (SAR) analog-to-digital converter (ADC) produced by Analog Devices Inc. This device operates from a single power supply and features an externally applied reference voltage, which can be set independently of the supply voltage. The AD4022 is part of the AD4020/AD4021/AD4022 family, known for their Easy Drive technology, which reduces signal chain complexity and power consumption, enabling higher channel density.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | - | - | 20 Bits | - |
| Analog Input Voltage Range | -VREF | - | +VREF | V |
| Operating Input Voltage | -0.1 | - | +VREF + 0.1 | V |
| Common-Mode Input Range | VREF/2 - 0.125 | - | VREF/2 + 0.125 | V |
| Common-Mode Rejection Ratio (CMRR) | - | - | 68 dB | - |
| Throughput Rate (fS) | - | - | 500 kSPS | - |
| Conversion Time | - | - | 2000 ns | - |
| Integral Nonlinearity Error (INL) | -3.1 | - | +3.1 ppm | - |
| Differential Nonlinearity Error (DNL) | -0.5 | - | +0.5 LSB | - |
| Operating Temperature Range | -40°C | - | +125°C | - |
| Package Type | - | - | 10-Lead MSOP | - |
Key Features
- Easy Drive Technology: Reduces signal chain complexity and power consumption, enabling higher channel density without the need for a dedicated ADC driver.
- High Accuracy: Offers high accuracy with integral nonlinearity error (INL) of ±3.1 ppm and differential nonlinearity error (DNL) of ±0.5 LSB.
- Input Span Compression: Eliminates the need for a negative supply to the ADC driver amplifier while preserving access to the full ADC code range.
- Input Overvoltage Clamp: Protects the ADC inputs against overvoltage events, minimizing disturbances on the reference pin and eliminating the need for external protection diodes.
- Low Power Consumption: Power scales linearly with throughput, making it efficient for various applications.
- High-Speed Operation: Supports a throughput rate of up to 500 kSPS.
- External Reference Voltage: Allows the reference voltage to be set independently of the supply voltage.
Applications
- Industrial Automation: Suitable for precision measurement and control systems.
- Medical Devices: Ideal for medical imaging, patient monitoring, and diagnostic equipment.
- Aerospace and Defense: Used in various military and aerospace applications requiring high accuracy and reliability.
- Test and Measurement Equipment: Employed in precision measurement instruments such as multimeters, oscilloscopes, and signal analyzers.
- Automotive Systems: Applied in advanced driver-assistance systems (ADAS) and automotive control systems.
Q & A
- What is the resolution of the AD4022BRMZ-RL7 ADC?
The AD4022BRMZ-RL7 has a resolution of 20 bits.
- What is the operating temperature range of the AD4022BRMZ-RL7?
The operating temperature range is from -40°C to +125°C.
- What is the throughput rate of the AD4022BRMZ-RL7?
The throughput rate is up to 500 kSPS.
- Does the AD4022BRMZ-RL7 require a dedicated ADC driver?
No, the Easy Drive technology eliminates the need for a dedicated ADC driver.
- What is the package type of the AD4022BRMZ-RL7?
The package type is 10-Lead MSOP.
- How does the input span compression feature work?
The input span compression feature eliminates the need for a negative supply to the ADC driver amplifier while preserving access to the full ADC code range.
- What is the common-mode rejection ratio (CMRR) of the AD4022BRMZ-RL7?
The CMRR is 68 dB.
- Is the AD4022BRMZ-RL7 protected against overvoltage events?
Yes, the input overvoltage clamp protects the ADC inputs against overvoltage events.
- How does the power consumption of the AD4022BRMZ-RL7 scale?
The power consumption scales linearly with throughput.
- Can the reference voltage be set independently of the supply voltage?
Yes, the reference voltage can be set independently of the supply voltage.
