Overview
The AD8629ARZ-REEL, produced by Analog Devices Inc., is a zero-drift, single-supply, rail-to-rail input/output operational amplifier. This device is part of the AD8628/AD8629/AD8630 family and is known for its ultralow offset voltage, drift, and bias current. It offers high accuracy and low noise, making it suitable for a variety of precision applications. The amplifier operates on a single supply voltage ranging from 2.7 V to 5 V and is also compatible with dual supply voltages from ±1.35 V to ±2.5 V. Its compact 8-SOIC package and low power consumption make it an ideal choice for space-constrained and power-sensitive designs.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Offset Voltage | VOS | -40°C ≤ TA ≤ +125°C | 1 | 5 | 10 | µV |
| Input Offset Drift | - | - | - | 0.002 | - | µV/°C |
| Input Bias Current | IB | -40°C ≤ TA ≤ +125°C | 30 | 100 | 1.0 nA | pA |
| 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 |
| Common-Mode Rejection Ratio | CMRR | VCM = 0 V to 2.7 V, -40°C ≤ TA ≤ +125°C | 115 | 130 | - | dB |
| Slew Rate | SR | RL = 10 kΩ | - | 1.0 | - | V/µs |
| Gain Bandwidth Product | GBP | - | - | 2.5 | - | MHz |
| Voltage Noise Density | en | f = 1 kHz | - | 22 | - | nV/√Hz |
| Current Noise Density | in | f = 10 Hz | - | 5 | - | fA/√Hz |
Key Features
- Lowest auto-zero amplifier noise with 0.5 µV p-p (0 Hz to 10 Hz)
- Ultralow offset voltage of 1 µV and drift of 0.002 µV/°C
- Rail-to-rail input and output swing
- Single-supply operation from 2.7 V to 5 V and dual-supply operation from ±1.35 V to ±2.5 V
- High gain, CMRR, and PSRR: 130 dB
- Very low input bias current: 100 pA maximum
- Low supply current: 1.0 mA per amplifier
- No external components required
- 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 AD8629ARZ-REEL?
The typical offset voltage is 1 µV. - What is the input offset drift of the AD8629ARZ-REEL?
The input offset drift is 0.002 µV/°C. - What is the supply voltage range for the AD8629ARZ-REEL?
The device operates on a single supply from 2.7 V to 5 V and dual supply from ±1.35 V to ±2.5 V. - What is the power supply rejection ratio (PSRR) of the AD8629ARZ-REEL?
The PSRR is 130 dB. - What is the slew rate of the AD8629ARZ-REEL?
The slew rate is 1.0 V/µs. - Does the AD8629ARZ-REEL require external components?
No, it does not require any external components. - What are the typical applications of the AD8629ARZ-REEL?
It is used in automotive sensors, pressure and position sensors, strain gage amplifiers, medical instrumentation, thermocouple amplifiers, precision current sensing, and photodiode amplifiers. - What is the package type of the AD8629ARZ-REEL?
The package type is 8-SOIC (0.154, 3.90mm Width). - What is the maximum input bias current of the AD8629ARZ-REEL?
The maximum input bias current is 100 pA. - What is the gain bandwidth product of the AD8629ARZ-REEL?
The gain bandwidth product is 2.5 MHz.
