Overview
The AD8684ARUZ is a quad low power, high speed JFET operational amplifier produced by Analog Devices Inc. This device is part of the AD8682 and AD8684 series, known for their excellent speed and precision at low supply currents. The AD8684ARUZ is particularly suited for applications requiring high dynamic response and low power consumption, making it ideal for portable and battery-powered devices.
Key Specifications
| Parameter | Typical Value | Maximum Value | Conditions |
|---|---|---|---|
| Supply Current per Amplifier | 250 μA | - | - |
| Slew Rate | 9 V/μs | - | - |
| Bandwidth | 3.5 MHz | - | - |
| Offset Voltage (VOS) | 0.35 mV | 1 mV @ 25°C, 3.5 mV @ -40°C to +85°C | -40°C ≤ TA ≤ +85°C |
| Input Bias Current (IB) | 6 pA | 20 pA @ 25°C, 125 pA @ -40°C to +85°C | -40°C ≤ TA ≤ +85°C |
| Input Offset Current (IOS) | 20 pA | 100 pA @ -40°C to +85°C | -40°C ≤ TA ≤ +85°C |
| Common-Mode Rejection Ratio (CMRR) | 90 dB | 70 dB @ -40°C to +85°C | -11 V ≤ VCM ≤ +15 V, -40°C ≤ TA ≤ +85°C |
| Supply Voltage | - | ±18 V | - |
| Operating Temperature Range | - | -40°C to +85°C | - |
Key Features
- Low supply current: 250 μA per amplifier maximum.
- High slew rate: 9 V/μs.
- Typical bandwidth: 3.5 MHz.
- Low offset voltage: 1 mV maximum at 25°C.
- Low input bias current: Typically a few picoamps, with a maximum of 125 pA over the full temperature range.
- High common-mode rejection ratio (CMRR): 90 dB typical.
- Unity-gain stable and capable of driving higher capacity loads.
- Ideal for portable, low power applications, especially with high source impedance.
Applications
- Portable and battery-powered devices.
- High impedance sensors and photodiode amplifiers.
- Filters and integrators.
- Audio line drivers and other low impedance applications.
- General-purpose amplification in low power systems.
Q & A
- What is the typical supply current per amplifier for the AD8684ARUZ?
The typical supply current per amplifier is 250 μA.
- What is the slew rate of the AD8684ARUZ?
The slew rate is 9 V/μs.
- What is the bandwidth of the AD8684ARUZ?
The typical bandwidth is 3.5 MHz.
- What is the maximum offset voltage of the AD8684ARUZ at 25°C?
The maximum offset voltage at 25°C is 1 mV.
- What is the maximum input bias current of the AD8684ARUZ over the full temperature range?
The maximum input bias current is 125 pA over the full temperature range.
- What is the common-mode rejection ratio (CMRR) of the AD8684ARUZ?
The CMRR is typically 90 dB.
- Is the AD8684ARUZ unity-gain stable?
Yes, the AD8684ARUZ is unity-gain stable.
- What is the operating temperature range of the AD8684ARUZ?
The operating temperature range is -40°C to +85°C.
- What are some typical applications for the AD8684ARUZ?
Typical applications include portable and battery-powered devices, high impedance sensors, photodiode amplifiers, filters, integrators, and audio line drivers.
- What is the package type of the AD8684ARUZ?
The package type is 14-TSSOP (Thin Shrink Small Outline Package).
