Overview
The ADA4627-1BRZ-R7, produced by Analog Devices Inc., is a wide bandwidth precision operational amplifier. This device is part of the ADA4627-1/ADA4637-1 family, known for its low noise, very low offset voltage, drift, and bias current. It combines the benefits of precision DC and high-speed AC operational amplifiers, making it suitable for a variety of high-performance applications.
The ADA4627-1 operates from a dual supply voltage range of ±5 V to ±15 V, offering high gain, high common-mode rejection ratio (CMRR), and high power supply rejection ratio (PSRR). These characteristics make it an excellent choice for applications requiring precision and high-speed performance.
Key Specifications
| Parameter | Symbol | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Offset Voltage | VOS | −40°C ≤ TA ≤ +85°C | 70 | 200 | 350 | µV |
| Offset Voltage Drift, Average | ∆VOS/∆T | −40°C ≤ TA ≤ +125°C | 1 | 2 | 3 | µV/°C |
| Power Supply Rejection Ratio | PSRR | VSY = ±4.5 V to ±18 V | 106 | 112 | 103 | dB |
| Input Bias Current | IB | −40°C ≤ TA ≤ +85°C | 1 | 5 | 1 | pA |
| Slew Rate | AV = +5, Cf = 4.8 pF | 82 | V/µs | |||
| Gain Bandwidth Product | GBP | RL = 1 kΩ, CL = 20 pF, AV = 1 | 164 | 19 | MHz | |
| Settling Time to 0.01% | tS | VIN = 10 V step, CL = 35 pF, RL = +1 kΩ, AV = −1 | 550 | ns | ||
| Supply Current per Amplifier | ISY | IO = 0 mA | ±7.0 | ±7.5 | mA |
Key Features
- Low Noise and Offset: The ADA4627-1 features a low voltage noise of 6.1 nV/√Hz at 1 kHz and a low offset voltage of 70 µV to 200 µV.
- High Gain and Bandwidth: It has a gain bandwidth product of 164 MHz and a slew rate of 82 V/µs.
- High CMRR and PSRR: The device offers high common-mode rejection ratio (CMRR) of 116 dB and high power supply rejection ratio (PSRR) of 112 dB.
- Low Input Bias Current: The input bias current is very low, typically 1 pA to 5 pA.
- Wide Supply Voltage Range: The amplifier operates from a dual supply voltage range of ±5 V to ±15 V.
- Fast Settling Time: It has a settling time to 0.01% of 550 ns for a 10 V step input.
Applications
- High Impedance Sensors: Suitable for amplifying signals from high impedance sensors.
- Photodiode Amplifier: Ideal for photodiode applications requiring low noise and high precision.
- Precision Instrumentation: Used in precision instrumentation due to its high accuracy and stability.
- Phase-Locked Loop Filters: Can be used in phase-locked loop filters requiring high bandwidth and low noise.
- High-End Audio and Professional Audio: Suitable for high-end audio and professional audio applications due to its low noise and high fidelity.
- Medical Equipment: Used in medical equipment where precision and reliability are critical.
Q & A
- What is the typical offset voltage of the ADA4627-1?
The typical offset voltage of the ADA4627-1 is 200 µV.
- What is the gain bandwidth product of the ADA4627-1?
The gain bandwidth product of the ADA4627-1 is 164 MHz.
- What is the slew rate of the ADA4627-1?
The slew rate of the ADA4627-1 is 82 V/µs.
- What is the input bias current of the ADA4627-1?
The input bias current of the ADA4627-1 is typically 1 pA to 5 pA.
- What is the power supply rejection ratio (PSRR) of the ADA4627-1?
The PSRR of the ADA4627-1 is typically 112 dB.
- What are the common applications of the ADA4627-1?
The ADA4627-1 is commonly used in high impedance sensors, photodiode amplifiers, precision instrumentation, phase-locked loop filters, high-end audio, and medical equipment.
- What is the operating temperature range of the ADA4627-1?
The operating temperature range of the ADA4627-1 is from -40°C to +125°C.
- What is the supply voltage range for the ADA4627-1?
The ADA4627-1 operates from a dual supply voltage range of ±5 V to ±15 V.
- What is the settling time to 0.01% for the ADA4627-1?
The settling time to 0.01% for the ADA4627-1 is 550 ns for a 10 V step input.
- What is the total harmonic distortion plus noise (THD + N) of the ADA4627-1?
The THD + N of the ADA4627-1 is 0.000045% at 1 kHz with a 6 V rms input.
