Overview
The AD8629ARMZ-REEL, produced by Analog Devices Inc., is a high-precision, dual-channel operational amplifier designed for applications requiring ultra-low offset, drift, and bias current. This device is part of the AD8628/AD8629/AD8630 family, known for their rail-to-rail input and output swing, making them ideal for sensitive measurement applications. The AD8629ARMZ-REEL operates on a single 5V supply and features a unique auto-zeroing topology that minimizes noise and offset voltage, ensuring high accuracy over a wide temperature range.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Offset Voltage | VOS | −40°C ≤ TA ≤ +125°C | 1 | 5 | 10 | µV |
| Input Bias Current | IB | −40°C ≤ TA ≤ +125°C | 30 | 100 | 1.5 nA | pA |
| Input Offset Current | IOS | −40°C ≤ TA ≤ +125°C | 50 | 200 | 250 | pA |
| Input Voltage Range | 0 | 5 | V | |||
| Common-Mode Rejection Ratio | CMRR | VCM = 0 V to 5 V, −40°C ≤ TA ≤ +125°C | 115 | 130 | dB | |
| Large Signal Voltage Gain | AVO | RL = 10 kΩ, VO = 0.3 V to 4.7 V, −40°C ≤ TA ≤ +125°C | 120 | 140 | dB | |
| Offset Voltage Drift | ∆VOS/∆T | −40°C ≤ TA ≤ +125°C | 0.002 | 0.02 | µV/°C | |
| Output Voltage High | VOH | RL = 100 kΩ to ground, −40°C ≤ TA ≤ +125°C | 4.99 | 4.996 | V | |
| Output Voltage Low | VOL | RL = 100 kΩ to V+, −40°C ≤ TA ≤ +125°C | 1 | 5 | mV | |
| Supply Current per Amplifier | ISY | VO = VS/2, −40°C ≤ TA ≤ +125°C | 0.85 | 1.0 | 1.2 | mA |
| Power Supply Rejection Ratio | PSRR | VS = 2.7 V to 5.5 V, −40°C ≤ TA ≤ +125°C | 115 | 130 | dB |
Key Features
- Ultralow offset voltage: 1 µV
- Low input offset drift: 0.002 µV/°C
- Rail-to-rail input and output swing
- Single 5V supply operation
- High gain, CMRR, and PSRR: up to 130 dB
- Very low input bias current: 100 pA maximum
- Low supply current: 1.0 mA
- No external capacitor required
- Low noise: 0.5 µV p-p (0.1 Hz to 10 Hz)
- Qualified for automotive applications
Applications
- Automotive sensors
- Pressure and position sensors
- Strain gage amplifiers
- Medical instrumentation
- Thermocouple amplifiers
- Precision current sensing
- Photodiode amplifiers
Q & A
- What is the typical offset voltage of the AD8629ARMZ-REEL?
The typical offset voltage is 1 µV.
- What is the input bias current of the AD8629ARMZ-REEL?
The input bias current is 100 pA maximum.
- Does the AD8629ARMZ-REEL require an external capacitor?
No, the AD8629ARMZ-REEL does not require an external capacitor.
- What is the common-mode rejection ratio (CMRR) of the AD8629ARMZ-REEL?
The CMRR is up to 130 dB.
- What are the typical supply current and power supply rejection ratio (PSRR) of the AD8629ARMZ-REEL?
The typical supply current is 1.0 mA, and the PSRR is up to 130 dB.
- What are some common applications of the AD8629ARMZ-REEL?
Common applications include automotive sensors, pressure and position sensors, strain gage amplifiers, medical instrumentation, thermocouple amplifiers, precision current sensing, and photodiode amplifiers.
- What is the operating temperature range of the AD8629ARMZ-REEL?
The operating temperature range is from −40°C to +125°C.
- What is the slew rate of the AD8629ARMZ-REEL?
The slew rate is not explicitly mentioned in the provided sources, but it is part of the dynamic performance characteristics of the amplifier.
- Is the AD8629ARMZ-REEL qualified for automotive applications?
Yes, the AD8629ARMZ-REEL is qualified for automotive applications.
- What package type is the AD8629ARMZ-REEL available in?
The AD8629ARMZ-REEL is available in an MSOP-8 package.
