Overview
The AD8684ARZ-REEL7 is a quad low-power, high-speed JFET operational amplifier produced by Analog Devices Inc. This device is designed for applications requiring low power consumption and high performance. The AD8684 features a JFET input stage, which ensures a very low input bias current, making it ideal for use in portable and battery-powered devices, as well as in applications with high source impedance.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Current per Amplifier | VO = 0 V, −40°C ≤ TA ≤ +85°C | 210 | - | 250 | μA |
| Input Bias Current | −40°C ≤ TA ≤ +85°C | 6 | 20 | 125 | pA |
| Offset Voltage | +25°C ≤ TA ≤ +85°C | 0.35 | - | 1 | mV |
| Common-Mode Rejection Ratio (CMRR) | −11 V ≤ VCM ≤ +15 V, −40°C ≤ TA ≤ +85°C | 70 | 90 | - | dB |
| Slew Rate | RL = 10 kΩ | 7 | - | 9 | V/μs |
| Gain Bandwidth Product (GBP) | - | - | - | 3.5 | MHz |
| Supply Voltage Range | - | ±4.5 | - | ±18 | V |
Key Features
- Low supply current: 250 μA per amplifier maximum
- High slew rate: 9 V/μs typical
- High bandwidth: 3.5 MHz typical
- Low offset voltage: 1 mV maximum at 25°C
- Low input bias current: 20 pA maximum at 25°C
- High common-mode rejection ratio (CMRR): 90 dB typical
- Fast settling time: 1.6 μs to 0.01%
- Unity-gain stable and capable of driving higher capacity loads
Applications
- Portable and battery-powered devices
- High source impedance applications
- Low power instrumentation
- Sensors and transducers
- Audio and signal processing circuits
Q & A
- What is the typical supply current per amplifier for the AD8684ARZ-REEL7?
The typical supply current per amplifier is 250 μA maximum.
- What is the slew rate of the AD8684ARZ-REEL7?
The slew rate is 9 V/μs typical.
- What is the gain bandwidth product (GBP) of the AD8684ARZ-REEL7?
The GBP is 3.5 MHz typical.
- What is the maximum offset voltage at 25°C for the AD8684ARZ-REEL7?
The maximum offset voltage at 25°C is 1 mV.
- What is the common-mode rejection ratio (CMRR) of the AD8684ARZ-REEL7?
The CMRR is 90 dB typical.
- Is the AD8684ARZ-REEL7 unity-gain stable?
- What is the input bias current of the AD8684ARZ-REEL7?
The input bias current is 20 pA maximum at 25°C.
- What is the supply voltage range for the AD8684ARZ-REEL7?
The supply voltage range is ±4.5 V to ±18 V.
- What are some typical applications for the AD8684ARZ-REEL7?
Typical applications include portable and battery-powered devices, high source impedance applications, low power instrumentation, sensors, and audio and signal processing circuits.
- What is the settling time to 0.01% for the AD8684ARZ-REEL7?
The settling time to 0.01% is 1.6 μs.
