Overview
The AD8647ARMZ-REEL, produced by Analog Devices Inc., is a dual rail-to-rail input and output, single-supply operational amplifier. This component is part of the AD8646/AD8647/AD8648 family and is distinguished by its low offset voltage, wide signal bandwidth, and low noise characteristics. The AD8647 specifically includes a low power shutdown function, making it versatile for various applications requiring high performance and power efficiency.
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 (−40°C < TA < +125°C) | mV |
| Offset Voltage Drift | ΔVOS/ΔT | −40°C < TA < +125°C | 1.8 μV/°C | 7.5 μV/°C | - | μV/°C |
| Input Bias Current | IB | - | 0.3 pA | 1 pA | 550 pA (−40°C < TA < +125°C) | pA |
| Input Offset Current | IOS | - | 0.1 pA | 0.5 pA | 250 pA (−40°C < TA < +125°C) | 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 |
| Large Signal Voltage Gain | AVO | RL = 2 kΩ, VO = 0.5 V to 4.5 V | 104 dB | 116 dB | - | dB |
| Supply Current per Amplifier | ISY | - | 1.6 mA | 2.0 mA | 2.5 mA (−40°C < TA < +125°C) | mA |
| Supply Current Shutdown Mode (AD8647 Only) | ISD | Both amplifiers shut down, VIN_SDA and VIN_SDB = 0 V | 10 nA | - | 1 µA (−40°C < TA < +125°C) | nA/µA |
| Slew Rate | SR | RL = 2 kΩ | - | 11 V/μs | - | V/μs |
| Gain Bandwidth Product | GBP | - | - | 24 MHz | - | MHz |
Key Features
- Low offset voltage: up to 2.5 mV maximum.
- Single-supply operation: 2.7 V to 5.5 V.
- Low noise: 8 nV/√Hz.
- Wide bandwidth: 24 MHz.
- High slew rate: 11 V/μs.
- Low power shutdown function (specific to AD8647).
- No phase reversal.
- Qualified for automotive applications.
- High output drive capability, suitable for audio line drivers and low impedance applications.
Applications
- Filters and integrators.
- Photodiode amplifiers.
- High impedance sensors.
- AC applications benefiting from wide bandwidth and low distortion.
- Audio line drivers and other low impedance applications.
- Automotive applications.
Q & A
- What is the typical offset voltage of the AD8647?
The typical offset voltage of the AD8647 is 2.5 mV. - What is the operating voltage range for the AD8647?
The AD8647 operates on a single supply from 2.7 V to 5.5 V. - What is the gain bandwidth product of the AD8647?
The gain bandwidth product of the AD8647 is 24 MHz. - Does the AD8647 have a shutdown function?
Yes, the AD8647 includes a low power shutdown function. - What is the slew rate of the AD8647?
The slew rate of the AD8647 is 11 V/μs. - Is the AD8647 suitable for automotive applications?
Yes, the AD8647 is qualified for automotive applications. - What is the common-mode rejection ratio (CMRR) of the AD8647?
The CMRR of the AD8647 is typically 84 dB. - What is the input bias current of the AD8647?
The input bias current of the AD8647 is typically 1 pA. - What is the supply current per amplifier in shutdown mode for the AD8647?
The supply current per amplifier in shutdown mode is typically 10 nA. - What are some common applications of the AD8647?
The AD8647 is commonly used in filters, integrators, photodiode amplifiers, high impedance sensors, and audio line drivers.
