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Analog Devices Inc. ADA4625-1运算放大器

Analog Devices Inc. ADA4625-1运算放大器

Analog Devices ADA4625-1运算放大器是一款高电压、轨到轨输出 (RRO) 精密结型场效应晶体管 (JFET) 输入运算放大器。快速稳定ADA4625-1运算放大器可在高电压、高增益和低噪声应用中提供最佳性能。该运算放大器在1kHz时具有3.3nV/√Hz的电压噪声密度,在18MHz带宽增益下具有0.15μ Vp-p的峰-峰噪声性能。ADA4625-1运算放大器在−40°C至+125°C的宽工业温度范围内工作,并具有较宽的工作电压范围。该放大器具有5V/36V的最低/最高电源电压、±80μV的失调电压以及  ±1.2μV/°C的电压漂移。ADA4625-1的输入共模电压范围包括负电源。该器件具有轨到轨输出摆幅。因此,设计人员可以在低电压单电源应用中最大限度地增大动态输入范围,而无需单独的负电压电源进行接地检测。

These op amps offer a 3.3nV/√Hz voltage noise density at 1kHz and 0.15μVp-p peak-to-peak noise performance over an 18MHz bandwidth gain. ADA4625-1's low-noise performance enables designers to develop high-resolution interface solutions.

The ADA4625-1 Operational Amplifiers are specified for operation over the extended −40°C to +125°C industrial temperature range and over a wide range of operating voltages. The op amps operate with a 5V/36V minimum/maximum supply voltage, ±80μV offset voltage, and ±1.2μV/°C voltage drift. ADA4625-1's input common-mode voltage range includes the negative supply. The output swings rail to rail. This allows designers to maximize the dynamic input range in low-voltage, single-supply applications without requiring a separate negative voltage power supply for ground sense.

Additional features of the ADA4625-1 Operational Amplifiers include a high slew rate, fast settling time, and low input bias current. With a high slew rate of 48V/μs and fast settling of 0.01% in 700ns, the ADA4625-1 Operational Amplifiers support higher measurement throughput for an increased sample rate in data acquisition (DAQ) systems. ADA4625-1's low input bias current of 3.5nA makes the op amps well-suited for use as a sensor interface amplifier for photodiodes and high-impedance sensors.

FEATURES

  • Wide gain bandwidth product: 18MHz typical
  • High slew rate: 48V/μs typical
  • Low voltage noise density: 3.3nV/√Hz typical at 1kHz
  • Low peak-to-peak noise: 0.15μ Vp-p, 0.1Hz to 10Hz
  • Low input bias current: ±15pA typical at TA = 25°C
  • Low offset voltage: ±80μV maximum at TA = 25°C
  • Offset voltage drift: ±1.2μV/°C maximum at TA = −40°C to 85°C
  • Fast settling: 0.01% in 700ns typical
  • Wide range of operating voltages
    • Dual-supply operation: ±2.5V to ±18V
    • Single-supply operation: 5V to 36V
  • Input voltage range includes negative voltage
  • Rail-to-rail output
  • High capacitive load drive capability
  • Output short-circuit current: ±46mA
  • No phase reversal
  • Unity-gain stable

应用

  • PLL filter amplifiers
  • Transimpedance amplifiers
  • Photodiode sensor interfaces
  • Low-noise charge amplifiers

SIMPLIFIED CIRCUIT DIAGRAM

Application Circuit Diagram - Analog Devices Inc. ADA4625-1运算放大器
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