ADI ADA4001-2ARZ-R7

The ADA4001-2 is a dual channel JFET amplifier that features low input voltage noise and current noise, input bias current, and rail-to-rail output. The combination of low noise and low input bias current makes this amplifier especially suitable for high impedance sensor amplification. With low noise and fast settling times, the ADA4001-2 provides good accuracy for medical instruments, electronic measurement, and automated test equipment. Unlike many competitive amplifiers, the ADA4001-2 maintains fast settling performance even with substantial capacitive loads, and, unlike many older JFET amplifiers, the ADA4001-2 does not suffer from output phase reversal when input voltages exceed the maximum common-mode voltage range. With fast slew rate and great stability under capacitive loads, the ADA4001-2 is a good fit for filter applications. With low input bias currents and noise, it offers a wide dynamic range for photodiode amplifier circuits. Low noise and distortion, along with high output current and excellent speed, make the ADA4001-2 a great choice for audio applications. The ADA4001-2 is specified over the -40°C to +125°C extended industrial temperature range. The ADA4001-2 is available in an 8-lead narrow SOIC package.

• Low TCVOS: ±5 µV/°C typical
• Low input bias current: 20 pA typical at VS Y = ±1 5 V
• Low noise 7.7 nV/√Hz typical at f = 1 kHz 1.2 µV rms at 20 Hz to 20 kHz
• Low distortion: 0.00006%
• No phase reversal
• Rail-to-rail output
• Unity-gain stable

• Instrumentation
• Medical instruments
• Multipole filters
• Precision current measurement
• Photodiode amplifiers
• Sensors
• Audio