Overview
The AD8648ARZ-REEL, produced by Analog Devices Inc., is a quad-channel, rail-to-rail, input and output, single-supply operational amplifier. This amplifier is characterized by its low offset voltage, wide signal bandwidth, low input voltage, and low current noise. It is designed to operate over a single-supply voltage range of 2.7 V to 5.5 V and is suitable for a wide range of applications due to its high performance features.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Offset Voltage | VOS | VCM = 0 V to 5 V | 0.6 mV | 2.5 mV | 3.2 mV | mV |
| Input Bias Current | IB | -40°C < TA < +85°C | 0.3 pA | 1 pA | 50 pA | pA |
| Input Offset Current | IOS | -40°C < TA < +85°C | 0.1 pA | 0.5 pA | 50 pA | pA |
| Input Voltage Range | VCM | 0 V | 5 V | V | ||
| Common-Mode Rejection Ratio | CMRR | VCM = 0 V to 5 V | 67 dB | 84 dB | dB | |
| Power Supply Rejection Ratio | PSRR | VSY = 2.7 V to 5.5 V | 63 dB | 80 dB | dB | |
| Supply Current per Amplifier | ISY | -40°C < TA < +125°C | 1.6 mA | 2.0 mA | 2.5 mA | mA |
| Slew Rate | SR | RL = 2 kΩ | 11 V/μs | V/μs | ||
| Gain Bandwidth Product | GBP | 24 MHz | MHz | |||
| Short-Circuit Output Current | 120 mA | mA |
Key Features
- Low offset voltage: 0.6 mV typical, 2.5 mV maximum.
- Single-supply operation: 2.7 V to 5.5 V.
- Low noise: 8 nV/√Hz voltage noise density.
- Wide bandwidth: 24 MHz gain bandwidth product.
- High slew rate: 11 V/μs.
- High output drive capability: 120 mA short-circuit output current.
- No phase reversal, unity gain stable.
- Low input bias current: 0.3 pA typical.
- Low supply current per amplifier: 1.6 mA to 2.5 mA.
- Qualified for automotive applications.
- Shutdown option available on AD8647 (not applicable to AD8648).
Applications
- Filters and integrators.
- Photodiode amplifiers.
- High impedance sensors.
- Battery-powered instruments.
- Multipole filters.
- ADC front ends.
- Sensors.
- Barcode scanners.
- ASIC input or output amplifiers.
- Audio amplifiers.
- Data path/mux/switch control.
Q & A
- What is the typical offset voltage of the AD8648?
The typical offset voltage of the AD8648 is 0.6 mV, with a maximum of 2.5 mV.
- What is the operating voltage range of the AD8648?
The AD8648 operates over a single-supply voltage range of 2.7 V to 5.5 V.
- What is the gain bandwidth product of the AD8648?
The gain bandwidth product of the AD8648 is 24 MHz.
- What is the slew rate of the AD8648?
The slew rate of the AD8648 is 11 V/μs.
- What is the short-circuit output current of the AD8648?
The short-circuit output current of the AD8648 is 120 mA.
- Is the AD8648 qualified for automotive applications?
- What is the typical input bias current of the AD8648?
The typical input bias current of the AD8648 is 0.3 pA.
- What is the common-mode rejection ratio (CMRR) of the AD8648?
The CMRR of the AD8648 is 84 dB.
- What are some common applications of the AD8648?
The AD8648 is commonly used in filters, integrators, photodiode amplifiers, high impedance sensors, battery-powered instruments, and more.
- Does the AD8648 have a shutdown option?
No, the AD8648 does not have a shutdown option. This feature is available on the AD8647 model.
