THS4511

宽带、低噪声、低失真、全差动放大器

The is a wideband, fully-differential operational amplifier designed for single-supply 5-V data-acquisition systems. It has very low noise at 2 nV/√Hz, and extremely low harmonic distortion of –72 dBc HD2 and –87 dBc HD3 at 70 MHz with 2 VPP, G = 0 dB, and 200- load. Slew rate is very high at 4900 Vµs and with settling time of 3.3 ns to 1% 2 V step it is ideal for pulsed applications. It is designed for minimum gain of 0 dB.

To allow for dc coupling to analog-to-digital converters ADCs, its unique output common-mode control circuit maintains the output common-mode voltage within 5-mV offset typical from the set voltage, when set within ±0.5 V of midsupply. The common-mode set point is set to midsupply by internal circuitry, which may be over-driven from an external source.

The THS4511 is a high-performance amplifier that has been optimized for use in 5-V single-supply data acquisition systems. The output has been optimized for best performance with its common-mode voltages set to midsupply, and the input has been optimized for performance over a wide range of common-mode input voltages. High performance at a low power-supply voltage enables single-supply 5-V data-acquisition systems while minimizing component count.

The THS4511 is offered in a quad, 16-pin leadless QFN package RGT, and is characterized for operation over the full industrial temperature range from –40°C to +85°C.

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Fully-Differential Architecture

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Common-Mode Input Range Includes the Negative Rail

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Unity-Gain Stable

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Bandwidth: 1.6 GHz Gain = 0 dB

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Slew Rate: 4900 V/µs

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1% Settling Time: 3.3 ns

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HD2: –72 dBc at 70 MHz

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HD3: –87 dBc at 70 MHz

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OIP2: 76 dBm at 70 MHz

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OIP3: 42 dBm at 70 MHz

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Input Voltage Noise: 2 nV/√Hz f > 10 MHz

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Noise Figure: 21.8 dB 50- System, G = 6 dB

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Output Common-Mode Control

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5-V Power-Supply Current: 39.2 mA

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Power-Down Capability: 0.65 mA

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APPLICA ONS

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5-V Data-Acquisition Systems

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High Linearity ADC Amplifiers

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Wireless Communication

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Medical Imaging

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Test and Measurement