Overview
The AD8512BRZ, produced by Analog Devices Inc., is a precision JFET operational amplifier known for its low offset voltage, low input bias current, and low noise characteristics. This dual-channel amplifier is particularly suited for applications requiring high precision and low noise, such as high impedance sensor amplification, precise current measurements using shunts, and audio applications. The AD8512BRZ offers excellent speed, high output current, and stability with capacitive loads, making it a versatile choice for various electronic systems.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Offset Voltage (B Grade) | VOS | −40°C < TA < +125°C | 0.08 | 0.4 | 0.8 | mV |
| Offset Voltage (A Grade) | VOS | −40°C < TA < +125°C | 0.1 | 0.9 | 1.8 | mV |
| Input Bias Current | IB | −40°C < TA < +85°C | 21 | 75 | 0.7 nA | pA |
| Input Offset Current | IOS | −40°C < TA < +85°C | 5 | 50 | 0.3 nA | pA |
| Input Capacitance (Differential) | 12.5 | pF | ||||
| Input Voltage Range | −2.0 | +2.5 | V | |||
| Output Voltage High (VOH) | RL = 600 Ω | 3.7 | 4.1 | V | ||
| Output Voltage Low (VOL) | RL = 600 Ω, −40°C < TA < +125°C | −4.8 | −4.2 | V | ||
| Output Current (IOUT) | ±40 | ±54 | mA | |||
| Supply Current/Amplifier (ISY) | VO = 0 V | 2.0 | 2.3 | 2.5 | mA | |
| 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 |
Key Features
- Low Offset Voltage: Maximum offset voltage of 0.4 mV, making it suitable for high precision applications.
- Low Input Bias Current: Typical input bias current of 25 pA, ideal for high impedance sensor amplification and precise current measurements.
- Low Noise: Voltage noise density of 8 nV/√Hz at 1 kHz, ensuring minimal noise in sensitive applications.
- High Output Current: Capable of delivering up to ±54 mA, suitable for driving loads in various applications.
- Fast Settling Time: Settling time of 0.4 μs to 0.1% for a 0 V to 4 V step, ensuring rapid response times.
- Stability with Capacitive Loads: Maintains performance even with substantial capacitive loads, making it suitable for high performance filters.
- No Phase Reversal: Does not suffer from output phase reversal when input voltages exceed the maximum common-mode voltage range.
- Dual-Supply Operation: Operates with supply voltages ranging from ±5 V to ±15 V.
- Operating Temperature Range: Functional over a temperature range of −40°C to +125°C.
Applications
- High Impedance Sensor Amplification: Ideal for amplifying signals from high impedance sensors due to its low input bias current and low noise.
- Precise Current Measurements: Suitable for precise current measurements using shunts because of its low offset voltage and low input bias current.
- Audio Applications: Low noise and distortion make it a great choice for audio applications requiring high fidelity.
- Medical Instruments: Used in medical instruments due to its dc precision, low noise, and fast settling time.
- Electronic Measurement and Automated Test Equipment: Superior accuracy in these applications due to its low offsets, low noise, and fast settling time.
- Instrumentation: Widely used in instrumentation, multipole filters, and photodiode amplifiers.
Q & A
- What is the typical offset voltage of the AD8512BRZ?
The typical offset voltage of the AD8512BRZ is 0.4 mV.
- What is the input bias current of the AD8512BRZ?
The typical input bias current is 25 pA.
- What is the voltage noise density of the AD8512BRZ at 1 kHz?
The voltage noise density at 1 kHz is 8 nV/√Hz.
- What is the maximum output current of the AD8512BRZ?
The maximum output current is ±54 mA.
- What is the settling time of the AD8512BRZ to 0.1% for a 0 V to 4 V step?
The settling time is 0.4 μs.
- Does the AD8512BRZ suffer from output phase reversal?
No, the AD8512BRZ does not suffer from output phase reversal when input voltages exceed the maximum common-mode voltage range.
- What is the operating temperature range of the AD8512BRZ?
The operating temperature range is −40°C to +125°C.
- What is the typical supply current per amplifier for the AD8512BRZ?
The typical supply current per amplifier is 2.3 mA.
- What is the gain bandwidth product (GBP) of the AD8512BRZ?
The gain bandwidth product is 8 MHz.
- What are some common applications of the AD8512BRZ?
Common applications include high impedance sensor amplification, precise current measurements, audio applications, medical instruments, and electronic measurement and automated test equipment.
- What is the package style of the AD8512BRZ?
The package style is an 8-lead SOIC-N.
