Overview
The AD712JN, produced by Analog Devices Inc., is a dual precision, high-speed BiFET operational amplifier. It is known for its excellent overall performance at competitive prices. The AD712JN features advanced laser wafer trimming technology, which results in very low offset voltage and offset voltage drift. This makes it an ideal upgrade for existing designs using older precision BiFETs and bipolar op amps. The device is particularly suited for applications requiring superior AC and DC performance, such as buffers for 12-bit digital-to-analog converters (DACs) and analog-to-digital converters (ADCs), as well as high-speed integrators and photo diode preamps.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Offset Voltage | 0.3 | 3 | 3 | mV |
| Input Offset Voltage Drift | 5 | 20 | µV/°C | |
| Slew Rate | 16 | V/µs | ||
| Settling Time (0 V to ±10 V) | 1 | µs to ±0.01% | ||
| Unity-Gain Bandwidth | 3 | MHz | ||
| Open-Loop Gain | 200 | V/mV | ||
| Common-Mode Rejection Ratio | 76 | 95 | dB | |
| Input Bias Current | 25 | 75 | 75 | pA |
| Supply Voltage | ±15 | ±18 | V | |
| Operating Temperature Range | 0 | 70 | °C (Commercial) |
Key Features
- High-speed operation with a slew rate of 16 V/µs and a settling time of 1 µs to ±0.01%.
- Low input offset voltage (3 mV maximum for J grade) and low offset voltage drift (5 µV/°C maximum for C grade).
- High open-loop gain (200 V/mV) and common-mode rejection ratio (76 dB to 95 dB).
- Low input bias current (25 pA to 75 pA) and low noise characteristics, making it suitable for electrometer applications.
- Available in various packages including 8-lead PDIP, SOIC_N, and CERDIP.
- Extended reliability PLUS screening available, including 168-hour burn-in and other environmental tests.
Applications
- Buffers for 12-bit digital-to-analog converters (DACs) and analog-to-digital converters (ADCs).
- High-speed integrators.
- Photo diode preamplifiers and picoampere current-to-voltage converters.
- Active filter applications due to its superior AC and DC performance.
Q & A
- What is the slew rate of the AD712JN? The slew rate of the AD712JN is 16 V/µs.
- What is the settling time of the AD712JN? The settling time is 1 µs to ±0.01%.
- What are the typical input offset voltage and drift for the AD712JN? The typical input offset voltage is 3 mV, and the drift is 5 µV/°C.
- What is the common-mode rejection ratio of the AD712JN? The common-mode rejection ratio is between 76 dB and 95 dB.
- What are the available packages for the AD712JN? The AD712JN is available in 8-lead PDIP, SOIC_N, and CERDIP packages.
- What are some typical applications of the AD712JN? Typical applications include buffers for DACs and ADCs, high-speed integrators, and photo diode preamplifiers.
- What is the operating temperature range for the commercial grade AD712JN? The operating temperature range for the commercial grade is 0°C to 70°C.
- Does the AD712JN have any special reliability screening options? Yes, extended reliability PLUS screening is available, which includes 168-hour burn-in and other environmental tests).
- What is the input bias current of the AD712JN? The input bias current is between 25 pA and 75 pA).
- Is the AD712JN suitable for high-speed unity-gain buffer circuits? Yes, it is suitable due to its excellent noise performance and low input current).
