Overview
The AD8665ARZ is a general-purpose operational amplifier (op-amp) produced by Analog Devices Inc. It belongs to the AD866x family, which is known for its single-supply, rail-to-rail output, and low noise performance. This amplifier operates over an extended supply voltage range, making it versatile for various applications. The AD8665ARZ is particularly useful in systems requiring low input bias currents, wide signal bandwidth, and low noise, making it suitable for cost-sensitive applications that typically demand higher-priced JFET amplifiers.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Supply Voltage | VDD | 5 | 16 | V | ||
| Dual Supply Voltage | VDD | ±2.5 | ±8 | V | ||
| Offset Voltage | VOS | VCM = 8 V | 0.6 | 2.5 | 3.0 | mV |
| Input Bias Current | IB | 0.2 | 1 | pA | ||
| Supply Current per Amplifier | ISY | 1.15 | 1.55 | 2.0 | mA | |
| Slew Rate | SR | RL = 2 kΩ | 3.5 | V/μs | ||
| Gain Bandwidth Product | GBP | 4 | MHz | |||
| Phase Margin | ΦM | 73 | Degrees | |||
| Voltage Noise Density | en | f = 10 kHz | 8 | nV/√Hz | ||
| Operating Temperature Range | TA | -40 | 125 | °C |
Key Features
- Single-supply operation: 5 V to 16 V and dual-supply operation: ±2.5 V to ±8 V
- Low input bias current: 1 pA max
- Low noise performance: 8 nV/√Hz @ 10 kHz
- Wide bandwidth: 4 MHz
- Rail-to-rail output
- Unity-gain stable
- Lead-free packaging and RoHS compliant
- Low offset voltage: 2.5 mV max
- High phase margin: 73 degrees
Applications
- Sensor amplification
- Reference buffers
- Medical equipment and physiological measurements
- Signal filters and conditioning
- Consumer audio
- Photodiode amplification
- ADC driver
- Level shifting circuits
Q & A
- What is the supply voltage range for the AD8665ARZ?
The AD8665ARZ can operate on a single supply from 5 V to 16 V and on dual supplies from ±2.5 V to ±8 V.
- What is the maximum input bias current of the AD8665ARZ?
The maximum input bias current is 1 pA.
- What is the gain bandwidth product (GBP) of the AD8665ARZ?
The gain bandwidth product is 4 MHz.
- What is the slew rate of the AD8665ARZ?
The slew rate is 3.5 V/μs with a load resistance of 2 kΩ.
- What is the operating temperature range for the AD8665ARZ?
The operating temperature range is from -40°C to 125°C.
- Is the AD8665ARZ RoHS compliant?
- What are some common applications of the AD8665ARZ?
- What is the voltage noise density of the AD8665ARZ at 10 kHz?
- What is the phase margin of the AD8665ARZ?
- What is the maximum offset voltage of the AD8665ARZ?
- What is the package type of the AD8665ARZ?
