Overview
The AD8513AR from Analog Devices Inc. is a quad-precision JFET operational amplifier designed for high-performance applications requiring low noise, low input bias current, and high precision. This amplifier is part of the AD8510/AD8512/AD8513 family, which features single-, dual-, and quad-channel configurations. The AD8513AR is particularly suited for instrumentation, operational amplifier, and buffer amplifier applications due to its excellent dc precision, low noise, and fast settling time.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Channels | 4 | |
| Input Offset Voltage (Vos) | 80 μV | |
| Input Bias Current (Ib) | 25 pA (typ), 80 pA (max) | |
| Input Voltage Noise Density (en) | 34 nV/√Hz at 10 Hz | |
| Common Mode Rejection Ratio (CMRR) | 100 dB | |
| Gain Bandwidth Product (GBP) | 8 MHz | |
| Slew Rate (SR) | 20 V/μs | |
| Supply Voltage | ±5 V to ±15 V | |
| Operating Supply Current | 2.2 mA per channel | |
| Operating Temperature Range | -40°C to +125°C | |
| Package | 14-lead SOIC_N, TSSOP |
Key Features
- JFET amplifier with very low input bias current (25 pA typical)
- Low offset voltage (80 μV maximum)
- Low input voltage noise density (34 nV/√Hz at 10 Hz)
- High gain bandwidth product (8 MHz) and slew rate (20 V/μs)
- Excellent common mode rejection ratio (100 dB)
- Surface mount technology (SMT) compatible
- Wide operating temperature range (-40°C to +125°C)
- No output phase reversal when input voltages exceed the maximum common-mode voltage range
Applications
The AD8513AR is suitable for a variety of high-performance applications, including:
- Instrumentation and measurement systems
- Medical instruments and diagnostic equipment
- Automated test equipment
- High impedance sensor amplification and precise current measurements using shunts
- Audio applications requiring low noise and distortion
- High-performance filters and precision rectifiers
Q & A
- What is the input bias current of the AD8513AR?
The input bias current of the AD8513AR is typically 25 pA and a maximum of 80 pA. - What is the input offset voltage of the AD8513AR?
The input offset voltage is 80 μV maximum. - What is the gain bandwidth product of the AD8513AR?
The gain bandwidth product is 8 MHz. - What is the slew rate of the AD8513AR?
The slew rate is 20 V/μs. - What is the operating temperature range of the AD8513AR?
The operating temperature range is -40°C to +125°C. - What types of packages are available for the AD8513AR?
The AD8513AR is available in 14-lead SOIC_N and TSSOP packages. - Is the AD8513AR suitable for surface mount technology (SMT)?
Yes, the AD8513AR is SMT compatible. - What are some common applications of the AD8513AR?
Common applications include instrumentation, medical instruments, automated test equipment, high impedance sensor amplification, and audio applications. - Does the AD8513AR suffer from output phase reversal?
No, the AD8513AR does not suffer from output phase reversal when input voltages exceed the maximum common-mode voltage range. - What is the typical supply current per channel for the AD8513AR?
The typical supply current per channel is 2.2 mA.
