THS4513

宽带、低噪声、低失真、全差动放大器

The is a wideband, fully-differential op amp designed for 3.3-V to 5-V data acquisition systems. It has very low noise at 2.2 nV/√Hz, and extremely low harmonic distortion of –75 dBc HD2 and –86 dBc HD3 at 70 MHz with 2-VPP output, G = 0 dB, and 200- load. Slew rate is very high at 5100 V/μs and with settling time of 2.9 ns to 1% 2-V step, it is ideal for pulsed applications. It is designed for a 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 typ from the set voltage, when set within 0.5 V of midsupply, with less than 4-mV differential offset voltage. The common-mode set point is set to midsupply by internal circuitry, which may be overdriven from an external source.

The input and output are optimized for best performance with their common-mode voltages set to midsupply. Along with high performance at low power-supply voltage, this design makes it ideal for extremely high-performance, single-supply 5-V data acquisition systems.

The THS4513 is offered in a quad, leadless QFN-16 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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Centered Input Common-Mode Range

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Minimum Gain of 1 V/V 0 dB

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Bandwidth: 1600 MHz

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Slew Rate: 5100 V/µs

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1% Settling Time: 2.9 ns

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HD2: –75 dBc at 70 MHz

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HD3: –86 dBc at 70 MHz

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OIP2: 77 dBm at 70 MHz

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OIP3: 42 dBm at 70 MHz

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Input Voltage Noise: 2.2 nV/√Hz f > 10 MHz

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Noise Figure: 19.8 dB

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Output Common-Mode Control

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Power Supply:

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Voltage: 3 V ±1.5 V to 5 V ±2.5 V

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Current: 37.7 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, High Linearity ADC Amplifier

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Wireless Communication

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Medical Imaging

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Test and Measurement

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