Overview
The AD8139ARD-REEL, produced by Analog Devices Inc., is an ultralow noise, high-performance differential amplifier designed with rail-to-rail output. This amplifier is ideal for driving analog-to-digital converters (ADCs) with resolutions up to 18 bits. It features a low noise level of 2.25 nV/√Hz, high signal-to-noise and distortion ratio (SFDR), and a wide bandwidth, making it suitable for high-precision applications. The AD8139 is easy to apply, with an internal common-mode feedback architecture that allows the output common-mode voltage to be controlled by a single pin. It supports both fully differential and single-ended-to-differential gain configurations and is manufactured using Analog Devices' second-generation XFCB process, ensuring low distortion levels.
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 | ||
| 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 | ±6 | V | |
| Operating Temperature Range | -40 | +125 | °C | |
| Package Type | 8-Lead SOIC with EP | |||
| Output Current per Channel | 80 | mA |
Key Features
- Ultralow noise: 2.25 nV/√Hz input voltage noise.
- High performance: Suitable for driving ADCs up to 18 bits.
- Rail-to-rail output: Ensures maximum signal swing.
- Adjustable output common-mode voltage: Controlled by a single pin.
- High common-mode rejection ratio (CMRR): Up to 79 dB.
- Low input offset voltage: ±0.5 mV maximum.
- Low input bias current: 0.5 µA maximum.
- Differential input and output: Supports both differential and single-ended-to-differential configurations.
- Wide supply voltage range: ±4.5 V to ±6 V.
- High slew rate: 150 V/µs.
- Compact packaging: Available in 8-lead SOIC and LFCSP packages.
Applications
- ADC drivers: Ideal for driving high-resolution ADCs.
- Single-ended-to-differential converters: Converts single-ended signals to differential signals.
- Differential filters: Used in filtering differential signals.
- Level shifters: Adjusts the common-mode voltage of differential signals.
- Differential PCB drivers: Drives differential signals on PCBs.
- Differential cable drivers: Drives differential signals over cables.
- Laboratory and testing equipment: Used in signal amplification, frequency conversion, and noise control.
- Medical field: Used in medical devices and diagnostic systems for signal processing.
- Audio processing: Enhances volume and clarity in sound systems.
- Video equipment: Enhances brightness and contrast in video signals.
- Industrial automation: Used in industrial control equipment and measuring instruments.
Q & A
- What is the primary application of the AD8139?
The AD8139 is primarily used as a driver for high-resolution analog-to-digital converters (ADCs) and in various differential signal processing applications.
- What is the input voltage noise of the AD8139?
The input voltage noise of the AD8139 is 2.25 nV/√Hz.
- What is the common-mode rejection ratio (CMRR) of the AD8139?
The CMRR of the AD8139 is up to 79 dB.
- What are the available package types for the AD8139?
The AD8139 is available in 8-lead SOIC with an exposed paddle (EP) and 8-lead LFCSP packages.
- What is the operating temperature range of the AD8139?
The operating temperature range of the AD8139 is -40°C to +125°C.
- Can the AD8139 be used in single-ended-to-differential configurations?
Yes, the AD8139 supports both fully differential and single-ended-to-differential gain configurations.
- What is the slew rate of the AD8139?
The slew rate of the AD8139 is 150 V/µs.
- What is the output current per channel of the AD8139?
The output current per channel of the AD8139 is 80 mA.
- How is the output common-mode voltage controlled in the AD8139?
The output common-mode voltage of the AD8139 is controlled by the voltage applied to the VOCM pin.
- What are some common applications of the AD8139 in industrial settings?
The AD8139 is used in industrial control equipment, measuring instruments, and other fields requiring precise signal processing and control.
