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