Overview
The AD8512BR-REEL, manufactured by Analog Devices Inc., is a dual-precision JFET operational amplifier. This component is renowned for its low noise, low distortion, and high output current, making it an excellent choice for various high-performance applications. The AD8512 is part of the AD8510/AD8512/AD8513 family, which is characterized by its fast settling time, stability with capacitive loads, and suitability for high impedance sensor amplification and precise current measurements.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input Offset Voltage (VOS) | −40°C < TA < +125°C | 0.1 | 0.9 | 1.8 | mV |
| Input Bias Current (IB) | −40°C < TA < +125°C | 21 | 75 | 7.5 nA | pA |
| Slew Rate (SR) | RL = 2 kΩ | 20 | V/μs | ||
| Gain Bandwidth Product (GBP) | 8 | MHz | |||
| Settling Time (tS) to 0.1% | 0 V to 4 V step, G = +1 | 0.4 μs | μs | ||
| Total Harmonic Distortion (THD) + Noise | 1 kHz, G = +1, RL = 2 kΩ | 0.0005 % | % | ||
| Output Current (IOUT) | ±40 | ±54 | mA | ||
| Supply Current/Amplifier (ISY) | VO = 0 V, −40°C < TA < +125°C | 2.0 | 2.3 | 2.5 | mA |
| Power Supply Rejection Ratio (PSRR) | VS = ±4.5 V to ±18 V | 86 | 130 | dB | |
| Operating Temperature | −40°C | +125°C | °C | ||
| Package Type | 8-SOIC (0.154", 3.90mm Width) |
Key Features
- Low noise and distortion, with a typical voltage noise density of 8.0 nV/√Hz at 1 kHz.
- High output current of up to ±54 mA.
- Fast slew rate of 20 V/μs and a gain bandwidth product of 8 MHz.
- Excellent stability with capacitive loads, preventing phase reversal.
- Very low input bias currents (typically 75 pA) and low input offset voltage (typically 0.9 mV).
- High common-mode rejection ratio (CMRR) of up to 130 dB.
- Operates over an extended industrial temperature range of −40°C to +125°C.
- Available in 8-lead narrow SOIC_N and 8-lead MSOP packages.
Applications
- Instrumentation: Suitable for high precision measurement applications.
- Multipole filters: High performance filters due to stability with capacitive loads.
- Precision current measurement: Ideal for shunt-based current measurements.
- Photodiode amplifiers: Low noise and low input bias currents make it suitable for photodiode circuits.
- Audio applications: Low noise and distortion make it a great choice for audio amplification.
- Medical instruments: Superior accuracy due to dc precision, low noise, and fast settling time.
- Military communication and avionics: Supports defense and aerospace applications with a military temperature range (−55°C to +125°C) for the AD8512-EP variant.
Q & A
- What is the typical voltage noise density of the AD8512 at 1 kHz?
8.0 nV/√Hz.
- What is the maximum output current of the AD8512?
±54 mA.
- What is the slew rate of the AD8512?
20 V/μs.
- What is the gain bandwidth product of the AD8512?
8 MHz.
- What is the typical input bias current of the AD8512?
75 pA.
- What is the operating temperature range of the AD8512?
−40°C to +125°C.
- In what packages is the AD8512 available?
8-lead narrow SOIC_N and 8-lead MSOP packages.
- Is the AD8512 suitable for high impedance sensor amplification?
- Does the AD8512 support military temperature ranges?
The AD8512-EP variant supports a military temperature range of −55°C to +125°C.
- What are some common applications of the AD8512?
Instrumentation, multipole filters, precision current measurement, photodiode amplifiers, audio applications, and medical instruments.
