Overview
The AD8139ARDZ-REEL, manufactured by Analog Devices Inc., is an ultralow noise, high-performance differential amplifier designed with rail-to-rail output. This amplifier is optimized for driving analog-to-digital converters (ADCs) with resolutions up to 18 bits. It features a proprietary second-generation XFCB process, enabling low distortion and noise levels. The AD8139 is known for its internal common-mode feedback architecture, which allows for precise control of the output common-mode voltage and excellent suppression of even-order harmonic distortion products.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Noise | 2.25 | nV/√Hz | ||
| Settling Time to 0.01% | 45 | ns | ||
| Output Balance Error at 1 MHz | -70 | dB | ||
| DC Common-Mode Rejection Ratio (CMRR) | 67 | 79 | dB | |
| Input Offset Voltage | -1.0 | ±0.45 | +1.0 | mV |
| Input Bias Current | 1.3 | 4.2 | µA | |
| Supply Voltage Range | 4.5 | 12 | V | |
| Package Type | 8-Lead SOIC w/ EP | |||
| Operating Temperature Range | -40 | +125 | °C | |
| -3 dB Bandwidth | 440 | MHz | ||
| Slew Rate | 150 | V/µs |
Key Features
- Ultralow noise with input voltage noise of 2.25 nV/√Hz
- High SFDR and wide bandwidth (440 MHz -3 dB bandwidth)
- Rail-to-rail output and adjustable output common-mode voltage
- Internal common-mode feedback architecture for precise output control and distortion suppression
- Simple external feedback networks for gain configuration
- Fully differential and single-ended-to-differential gain configurations
- Low input offset voltage (±0.5 mV maximum) and low input bias current (0.5 µA maximum)
- High DC common-mode rejection ratio (CMRR) of up to 79 dB
Applications
- ADC drivers for up to 18-bit resolutions
- Single-ended-to-differential converters
- Differential filters
- Level shifters
- Differential PCB drivers
- Differential cable drivers
Q & A
- What is the primary application of the AD8139ARDZ-REEL?
The AD8139ARDZ-REEL is primarily used as a driver for analog-to-digital converters (ADCs) with resolutions up to 18 bits.
- What is the input voltage noise of the AD8139ARDZ-REEL?
The input voltage noise of the AD8139ARDZ-REEL is 2.25 nV/√Hz.
- What is the -3 dB bandwidth of the AD8139ARDZ-REEL?
The -3 dB bandwidth of the AD8139ARDZ-REEL is 440 MHz.
- What is the slew rate of the AD8139ARDZ-REEL?
The slew rate of the AD8139ARDZ-REEL is 150 V/µs.
- What is the supply voltage range for the AD8139ARDZ-REEL?
The supply voltage range for the AD8139ARDZ-REEL is from 4.5 V to 12 V.
- What package types are available for the AD8139ARDZ-REEL?
The AD8139ARDZ-REEL is available in an 8-lead SOIC package with an exposed paddle (EP) and an 8-lead LFCSP package.
- What is the operating temperature range of the AD8139ARDZ-REEL?
The operating temperature range of the AD8139ARDZ-REEL is from -40°C to +125°C.
- How does the AD8139ARDZ-REEL control its output common-mode voltage?
The AD8139ARDZ-REEL controls its output common-mode voltage through its internal common-mode feedback architecture, which allows the voltage to be set by the voltage applied to the VOCM pin.
- What are some other applications of the AD8139ARDZ-REEL besides ADC drivers?
Besides ADC drivers, the AD8139ARDZ-REEL can be used in single-ended-to-differential converters, differential filters, level shifters, differential PCB drivers, and differential cable drivers.
- How does the AD8139ARDZ-REEL achieve low distortion?
The AD8139ARDZ-REEL achieves low distortion through its internal feedback loop and the proprietary second-generation XFCB process used in its manufacture.
