AD8139
低噪声，轨到轨差分ADC驱动器 Low Noise, Rail-to-Rail, Differential ADC Driver
Product Details
The is an ultralow noise, high performance differential amplifier with rail-to-rail output. With its low noise, high SFDR, and wide bandwidth, it is an ideal choice for driving analog-to-digital converters ADCs with resolutions to 18 bits. The AD8139 is easy to apply, and its internal common-mode feedback architecture allows its output common-mode voltage to be controlled by the voltage applied to one pin. The internal feedback loop also provides outstanding output balance as well as suppression of even-order harmonic distortion products. Fully differential and single-ended-to-differential gain configurations are easily realized by the AD8139. Simple external feedback networks consisting of four resistors determine the closed-loop gain of the amplifier.
The AD8139 is manufactured on the proprietary Analog Devices, Inc., second-generation XFCB process, enabling it to achieve low levels of distortion with input voltage noise of only 2.25 nV/√Hz.
The AD8139 is available in an 8-lead SOIC package with an exposed paddle EP on the underside of its body and a 3 mm × 3 mm LFCSP. It is rated to operate over the temperature range of −40°C to +125°C.
Applications
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- ADC drivers to 18 bits
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- Single-ended-to-differential converters
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- Differential filters
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- Level shifters
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- Differential PCB drivers
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- Differential cable drivers
### Features and Benefits
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- Fully differential
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- Low noise
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- 2.25 nV/√Hz
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- 2.1 pA/√Hz
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- Low harmonic distortion
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- 98 dBc SFDR at 1 MHz
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- 85 dBc SFDR at 5 MHz
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- 72 dBc SFDR at 20 MHz
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- High speed
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- 410 MHz, 3 dB BW G = 1
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- 800 V/µs slew rate
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- 45 ns settling time to 0.01%
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- 69 dB output balance at 1 MHz
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- 80 dB dc CMRR
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- Low offset: ±0.5 mV maximum
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- Low input offset current: 0.5 µA maximum
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- Differential input and output
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- Differential-to-differential or single-ended-to-differential operation
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- Rail-to-rail output
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- Adjustable output common-mode voltage
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- Wide supply voltage range: 5 V to 12 V
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- Available in a small SOIC package and an 8-lead LFCSP
