Overview
The AD8138ARMZ-REEL7, produced by Analog Devices Inc., is a low-distortion differential ADC driver designed to simplify differential signal amplification and driving. This component is part of the AD8138 series, which offers significant advancements over traditional op amps for differential signal processing. The AD8138 can function as both a single-ended-to-differential amplifier and a differential-to-differential amplifier, making it highly versatile in various applications. It is manufactured using Analog Devices' proprietary XFCB bipolar process, ensuring high performance and low harmonic distortion.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Temperature Range | −40°C | +85°C | ||
| Package | 8-Lead MSOP (RM-8) | |||
| -3 dB Bandwidth | 220 MHz | 250 MHz | 320 MHz | |
| Slew Rate | 250 V/μs | 330 V/μs | ||
| Input Voltage Noise (RTI) | 17 nV/√Hz (f = 0.1 MHz to 100 MHz) | |||
| Input Voltage Range | −3.8 V | +3.8 V | ||
| Input Offset Voltage | −3.5 mV | ±1 mV | +3.5 mV | |
| Input Bias Current | 0.5 μA | |||
| Common-Mode Rejection Ratio (CMRR) | −75 dB | |||
| Power Supply Operating Range | ±1.4 V | ±5.5 V | ||
| Quiescent Current | 18 mA | 20 mA | 23 mA | |
Key Features
- Low Distortion: The AD8138ARMZ-REEL7 offers the lowest harmonic distortion available in a differential amplifier, making it ideal for high-fidelity signal processing.
- High Bandwidth: With a -3 dB bandwidth of up to 320 MHz and a slew rate of up to 330 V/μs, this component is suitable for high-speed applications.
- Internal Feedback: The internal feedback feature ensures balanced output gain and phase matching, suppressing even-order harmonics and minimizing gain errors.
- Single-Ended to Differential Conversion: The AD8138 can convert single-ended signals to differential signals, eliminating the need for transformers and simplifying the driving of differential ADCs.
- Common-Mode Level-Shifting and Buffering: It can perform common-mode level-shifting and buffering of the driving signal, enhancing the performance of the ADC.
- Compact Package: Available in an 8-Lead MSOP package, making it suitable for space-constrained designs.
Applications
- Differential ADC Drivers: The AD8138ARMZ-REEL7 is primarily used to drive differential analog-to-digital converters (ADCs), maximizing their performance by providing balanced differential signals.
- High-Speed Data Acquisition Systems: Its high bandwidth and low distortion make it suitable for high-speed data acquisition systems where signal integrity is critical.
- Audio and Video Processing: It is used in audio and video processing applications where high fidelity and low distortion are essential.
- Medical Imaging and Diagnostic Equipment: The component is also used in medical imaging and diagnostic equipment where precise signal processing is required.
- Industrial and Automotive Systems: It can be applied in various industrial and automotive systems that require high-performance differential signal amplification.
Q & A
- What is the primary function of the AD8138ARMZ-REEL7?
The primary function of the AD8138ARMZ-REEL7 is to act as a low-distortion differential ADC driver, converting single-ended signals to differential signals and driving differential ADCs.
- What is the operating temperature range of the AD8138ARMZ-REEL7?
The operating temperature range of the AD8138ARMZ-REEL7 is from −40°C to +85°C.
- What is the package type of the AD8138ARMZ-REEL7?
The AD8138ARMZ-REEL7 is available in an 8-Lead MSOP (RM-8) package.
- What is the -3 dB bandwidth of the AD8138ARMZ-REEL7?
The -3 dB bandwidth of the AD8138ARMZ-REEL7 is up to 320 MHz.
- How does the internal feedback feature of the AD8138ARMZ-REEL7 work?
The internal feedback feature ensures balanced output gain and phase matching, suppressing even-order harmonics and minimizing gain errors associated with external gain setting resistors.
- Can the AD8138ARMZ-REEL7 perform common-mode level-shifting and buffering?
Yes, the AD8138ARMZ-REEL7 can perform common-mode level-shifting and buffering of the driving signal, enhancing the performance of the ADC.
- What are some common applications of the AD8138ARMZ-REEL7?
Common applications include differential ADC drivers, high-speed data acquisition systems, audio and video processing, medical imaging and diagnostic equipment, and industrial and automotive systems.
- How does the AD8138ARMZ-REEL7 improve the performance of ADCs?
The AD8138ARMZ-REEL7 improves the performance of ADCs by providing balanced differential signals, eliminating the need for transformers, and performing single-ended-to-differential conversion and common-mode level-shifting.
- What is the typical quiescent current of the AD8138ARMZ-REEL7?
The typical quiescent current of the AD8138ARMZ-REEL7 is 20 mA.
- What is the input voltage noise (RTI) of the AD8138ARMZ-REEL7?
The input voltage noise (RTI) of the AD8138ARMZ-REEL7 is 17 nV/√Hz (f = 0.1 MHz to 100 MHz).
