Overview
The AD8625ARZ-REEL7 is a precision JFET input operational amplifier produced by Analog Devices Inc. This component is part of the AD862x series, known for its true single-supply operation, low power consumption, and rail-to-rail output. The AD8625 is fully specified over the industrial temperature range of −40°C to +85°C, making it suitable for a wide range of applications.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Offset Voltage | VOS | −40°C < TA < +85°C | 0.05 mV | 0.5 mV | 1.2 mV | mV |
| Input Bias Current | IB | −40°C < TA < +85°C | 0.25 pA | 1 pA | 60 pA | pA |
| Input Offset Current | IOS | −40°C < TA < +85°C | 0.5 pA | 25 pA | pA | |
| Input Voltage Range | 0 V | 3 V | V | |||
| Common-Mode Rejection Ratio | CMRR | VCM = 0 V to 2.5 V | 66 dB | 87 dB | dB | |
| Large Signal Voltage Gain | AVO | RL = 10 kΩ, VO = 0.5 V to 4.5 V | 100 V/mV | 230 V/mV | V/mV | |
| Offset Voltage Drift | ∆VOS/∆T | −40°C < TA < +85°C | 2.5 µV/°C | µV/°C | ||
| Output Voltage High | VOH | −40°C < TA < +85°C | 4.92 V | V | ||
| Output Current | IOUT | ±15 mA | mA | |||
| Supply Current/Amplifier | ISY | −40°C < TA < +85°C | 710 µA | 850 µA | 900 µA | µA |
| Slew Rate | SR | 5 V/µs | V/µs | |||
| Gain Bandwidth Product | GBP | 5 MHz | MHz | |||
| Phase Margin | ØM | 60 Degrees | Degrees | |||
| Voltage Noise (peak-to-peak) | en p-p | 0.1 Hz to 10 Hz | 2.5 µV p-p | µV p-p | ||
| Voltage Noise Density | en f = 1 kHz | 16 nV/√Hz | nV/√Hz | |||
| Current Noise Density | in f = 1 kHz | 0.5 fA/√Hz | fA/√Hz | |||
| Channel Separation | Cs f = 1 kHz | 105 dB | dB |
Key Features
- Precision JFET Input: Low input bias current and high input impedance.
- True Single-Supply Operation: Operates from a single supply voltage, making it versatile for various applications.
- Low Power Consumption: Supply current is less than 630 μA per amplifier, ideal for power-sensitive designs.
- Rail-to-Rail Output: The output can swing nearly rail-to-rail, enhancing the dynamic range of the amplifier.
- High Stability with Capacitive Loads: Stable operation with capacitive loads of over 500 pF.
- Wide Temperature Range: Fully specified over the industrial temperature range of −40°C to +85°C.
- Low Noise and High Channel Separation: Low voltage noise density and high channel separation make it suitable for precision applications.
Applications
- Photodiode Transimpedance Amplification: Ideal for converting current from photodiodes into voltage signals.
- ATE Reference Level Drivers: Used in automated test equipment for driving reference levels.
- Battery Management: Suitable for both line-powered and portable instrumentation in battery management systems.
- Remote Sensor Signal Conditioning: Including automotive sensors, due to its stability and precision over a wide temperature range.
- Buffering CMOS DACs: The rail-to-rail input and output capabilities make it suitable for buffering CMOS digital-to-analog converters.
Q & A
- What is the typical supply current of the AD8625ARZ-REEL7?
The typical supply current is 850 μA per amplifier.
- What is the input bias current of the AD8625ARZ-REEL7?
The input bias current is typically 1 pA and can range up to 60 pA over the industrial temperature range.
- What is the gain bandwidth product of the AD8625ARZ-REEL7?
The gain bandwidth product is 5 MHz.
- Can the AD8625ARZ-REEL7 operate with capacitive loads?
Yes, it remains stable with capacitive loads of over 500 pF.
- What is the common-mode rejection ratio (CMRR) of the AD8625ARZ-REEL7?
The CMRR is typically 87 dB for VCM = 0 V to 2.5 V.
- What are the typical applications of the AD8625ARZ-REEL7?
Applications include photodiode transimpedance amplification, ATE reference level drivers, battery management, and remote sensor signal conditioning.
- What is the slew rate of the AD8625ARZ-REEL7?
The slew rate is 5 V/µs.
- Is the AD8625ARZ-REEL7 RoHS compliant?
Yes, the AD8625ARZ-REEL7 is RoHS compliant.
- What is the phase margin of the AD8625ARZ-REEL7?
The phase margin is 60 degrees.
- What is the voltage noise density of the AD8625ARZ-REEL7?
The voltage noise density is 16 nV/√Hz at 1 kHz.
