Overview
The AD8628ARZ-REEL7 is a high-precision, wide bandwidth auto-zero operational amplifier produced by Analog Devices Inc. This single-supply amplifier features rail-to-rail input and output swing, making it suitable for a variety of applications requiring high accuracy and low noise. The AD8628ARZ-REEL7 operates over a temperature range of -40°C to +125°C and is fully specified from 2.7V to 5V single supply (±1.35V to ±2.5V dual supply).
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 |
| Common-Mode Rejection Ratio | CMRR | VCM = 0 V to 5 V | 115 | 130 | 140 | dB |
| Power Supply Rejection Ratio | PSRR | VS = 2.7 V to 5.5 V | 115 | 130 | 130 | dB |
| Supply Current per Amplifier | ISY | VO = VS/2 | 0.85 | 1.0 | 1.2 | mA |
| Output Voltage High | VOH | RL = 100 kΩ to ground | 4.99 | 4.996 | 4.995 | V |
| Output Voltage Low | VOL | RL = 100 kΩ to V+ | 1 | 5 | 5 | mV |
| Short-Circuit Limit | ISC | -40°C ≤ TA ≤ +125°C | ±25 | ±40 | mA | |
| Slew Rate | SR | RL = 10 kΩ | 1.0 | V/µs | ||
| Gain Bandwidth Product | GBP | 2.5 | MHz |
Key Features
- Ultralow Offset Voltage: Typically less than 1 µV, ensuring high accuracy in applications requiring minimal offset errors.
- Low Temperature Drift: Offset voltage drift of 0.002 µV/°C, maintaining precision over a wide temperature range.
- Rail-to-Rail Input and Output Swing: Allows for full utilization of the supply voltage range, enhancing flexibility in circuit design.
- High CMRR and PSRR: Common-Mode Rejection Ratio (CMRR) of 115 dB to 140 dB and Power Supply Rejection Ratio (PSRR) of 115 dB to 130 dB, ensuring robust noise rejection.
- Low Noise Performance: Voltage noise of 0.5 µV p-p (0 Hz to 10 Hz) and voltage noise density of 22 nV/√Hz at 1 kHz.
- Low Input Bias Current: Maximum input bias current of 100 pA, suitable for precision applications.
- No External Components Required: Simplifies circuit design and reduces component count.
Applications
- Automotive Sensors: Suitable for pressure, position, and other automotive sensors due to its high precision and wide temperature range.
- Strain Gage Amplifiers: Ideal for strain gage applications requiring high accuracy and low noise.
- Medical Instrumentation: Used in medical devices where precision and low noise are critical.
- Thermocouple Amplifiers: Suitable for thermocouple applications due to its low offset voltage and drift.
- Precision Current Sensing: Used in applications requiring accurate current measurement.
- Photodiode Amplifiers: Ideal for photodiode applications where low noise and high precision are necessary.
Q & A
- What is the typical offset voltage of the AD8628ARZ-REEL7?
The typical offset voltage is less than 1 µV.
- What is the temperature range for the AD8628ARZ-REEL7?
The operating temperature range is -40°C to +125°C.
- What is the supply voltage range for the AD8628ARZ-REEL7?
The amplifier operates from 2.7V to 5V single supply (±1.35V to ±2.5V dual supply).
- What is the common-mode rejection ratio (CMRR) of the AD8628ARZ-REEL7?
The CMRR is between 115 dB and 140 dB.
- What is the power supply rejection ratio (PSRR) of the AD8628ARZ-REEL7?
The PSRR is between 115 dB and 130 dB.
- What is the input bias current of the AD8628ARZ-REEL7?
The maximum input bias current is 100 pA.
- Does the AD8628ARZ-REEL7 require external components?
No, the AD8628ARZ-REEL7 does not require external components.
- What is the slew rate of the AD8628ARZ-REEL7?
The slew rate is 1.0 V/µs.
- What are some typical applications of the AD8628ARZ-REEL7?
Typical applications include automotive sensors, strain gage amplifiers, medical instrumentation, thermocouple amplifiers, precision current sensing, and photodiode amplifiers.
- What is the package type and pin count of the AD8628ARZ-REEL7?
The package type is 8-Lead SOIC with a pin count of 8.
