Overview
The AD8630ARZ is a zero-drift, single-supply, rail-to-rail input/output operational amplifier produced by Analog Devices Inc. This amplifier is known for its ultralow offset, drift, and bias current, making it highly accurate and reliable. It operates within a wide bandwidth and features auto-zeroing technology, which combines low cost with high precision and low noise. The device is fully specified for operation from 2.7V to 5V single supply (±1.35V to ±2.5V dual supply), and it significantly reduces digital switching noise common in chopper-stabilized amplifiers.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Offset Voltage (VOS) | 1 µV | −40°C ≤ TA ≤ +125°C |
| Input Offset Drift (∆VOS/∆T) | 0.002 µV/°C | −40°C ≤ TA ≤ +125°C |
| Input Bias Current (IB) | 100 pA (max) | −40°C ≤ TA ≤ +125°C |
| Common-Mode Rejection Ratio (CMRR) | 130 dB | VCM = 0 V to 5 V, −40°C ≤ TA ≤ +125°C |
| Power Supply Rejection Ratio (PSRR) | 130 dB | VS = 2.7 V to 5.5 V, −40°C ≤ TA ≤ +125°C |
| Supply Current per Amplifier (ISY) | 1.0 mA (typ) | VO = VS/2, −40°C ≤ TA ≤ +125°C |
| Bandwidth | 2.5 MHz | |
| Input Voltage Range | 0 to 5 V | |
| Output Voltage High (VOH) | 4.99 V (min) @ RL = 100 kΩ to ground | −40°C ≤ TA ≤ +125°C |
| Output Voltage Low (VOL) | 1 mV (max) @ RL = 100 kΩ to V+ | −40°C ≤ TA ≤ +125°C |
| Short-Circuit Limit (ISC) | ±25 mA (min) | −40°C ≤ TA ≤ +125°C |
| Package | 14-SOIC (0.154", 3.90mm Width) |
Key Features
- Zero-drift, single-supply, rail-to-rail input/output operational amplifier
- Ultralow offset voltage: 1 µV
- Low input offset drift: 0.002 µV/°C
- Rail-to-rail input and output swing
- Low noise: 0.5 µV p-p (0.1 Hz to 10 Hz)
- High gain, CMRR, and PSRR: up to 130 dB
- Very low input bias current: 100 pA maximum
- Low supply current: 1.0 mA typical
- No external capacitor required
- Reduces digital switching noise found in most chopper-stabilized amplifiers
Applications
- Position and pressure sensors
- Medical equipment
- Strain gage amplifiers
- Automotive sensors
- Thermocouple amplifiers
- Precision current sensing
- Photodiode amplifiers
Q & A
- What is the typical offset voltage of the AD8630ARZ?
The typical offset voltage is 1 µV.
- What is the input offset drift of the AD8630ARZ?
The input offset drift is 0.002 µV/°C.
- What is the operating voltage range for the AD8630ARZ?
The device operates from 2.7V to 5V single supply (±1.35V to ±2.5V dual supply).
- What is the bandwidth of the AD8630ARZ?
The bandwidth is 2.5 MHz.
- What is the common-mode rejection ratio (CMRR) of the AD8630ARZ?
The CMRR is up to 130 dB.
- What is the power supply rejection ratio (PSRR) of the AD8630ARZ?
The PSRR is up to 130 dB.
- Does the AD8630ARZ require an external capacitor?
No, the AD8630ARZ does not require an external capacitor.
- What are some common applications for the AD8630ARZ?
Common applications include position and pressure sensors, medical equipment, strain gage amplifiers, automotive sensors, thermocouple amplifiers, precision current sensing, and photodiode amplifiers.
- What is the package type for the AD8630ARZ?
The package type is 14-SOIC (0.154", 3.90mm Width).
- What is the typical supply current per amplifier for the AD8630ARZ?
The typical supply current per amplifier is 1.0 mA.
