Overview
The AD8646ARMZ, produced by Analog Devices Inc., is a dual, rail-to-rail, input and output operational amplifier. This component is part of the AD8646 series, known for its low offset voltage, wide signal bandwidth, and low noise characteristics. It operates on a single supply voltage ranging from 2.7 V to 5.5 V, making it versatile for various applications. The AD8646ARMZ is particularly useful in scenarios requiring high output drive capability and low distortion, such as audio line drivers and high impedance sensor interfaces.
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 |
| 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 | |
| Large Signal Voltage Gain | AVO | RL = 2 kΩ, VO = 0.5 V to 4.5 V | 104 dB | 116 dB | dB | |
| Slew Rate | SR | RL = 2 kΩ | 11 V/μs | V/μs | ||
| Gain Bandwidth Product | GBP | 24 MHz | MHz | |||
| Supply Voltage Range | Vs | 2.7 V | 5.5 V | V | ||
| Operating Temperature Range | TA | −40°C | 125°C | °C |
Key Features
- Low offset voltage: Maximum of 2.5 mV
- 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
- High output drive capability: Short-circuit output current of 120 mA
- No phase reversal
- Qualified for automotive applications
- Low power shutdown function (for AD8647)
Applications
- Filters and integrators
- Photodiode amplifiers
- High impedance sensors
- Audio line drivers and other low impedance applications
- AC applications benefiting from wide bandwidth and low distortion
Q & A
- What is the typical offset voltage of the AD8646ARMZ?
The typical offset voltage is 2.5 mV.
- What is the operating supply voltage range for the AD8646ARMZ?
The operating supply voltage range is from 2.7 V to 5.5 V.
- What is the gain bandwidth product of the AD8646ARMZ?
The gain bandwidth product is 24 MHz.
- What is the slew rate of the AD8646ARMZ?
The slew rate is 11 V/μs.
- Is the AD8646ARMZ qualified for automotive applications?
Yes, it is qualified for automotive applications.
- What is the common-mode rejection ratio (CMRR) of the AD8646ARMZ?
The CMRR is typically 84 dB.
- Does the AD8646ARMZ have a low power shutdown function?
No, the low power shutdown function is available in the AD8647 model, not the AD8646.
- What is the maximum short-circuit output current of the AD8646ARMZ?
The maximum short-circuit output current is 120 mA.
- What is the operating temperature range for the AD8646ARMZ?
The operating temperature range is from −40°C to 125°C.
- What type of packaging is available for the AD8646ARMZ?
The AD8646ARMZ is available in 8-Lead MSOP packaging.
