Overview
The AD824AR-14-REEL7, produced by Analog Devices Inc., is a quad, FET input, single supply operational amplifier. This device is notable for its rail-to-rail output swing and low input bias current, making it highly suitable for a variety of low voltage applications. The AD824 operates from a single supply of 3 V to 30 V and is also compatible with dual supplies up to ±15 V. Fabricated on Analog Devices' complementary bipolar process, it features a unique input stage that prevents phase inversion or latch-up, even when the input voltage extends beyond the supply rails.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Offset Voltage (AD824A) | VOS | 0.1 | 1.0 | 1.5 | mV |
| Input Bias Current | IB | 2 | 12 | 4000 | pA |
| Input Offset Current | IOS | 2 | 10 | 300 | pA |
| Input Voltage Range | -0.2 | +3.0 | V | ||
| Common-Mode Rejection Ratio | CMRR | 60 | 74 | dB | |
| Input Impedance | 1013||3.3 Ω||pF | ||||
| Large Signal Voltage Gain | AVO | 20 | 40 | 1000 | V/mV |
| Supply Current per Amplifier | 500 | µA | |||
| Bandwidth | 2 | MHz | |||
| Slew Rate | 2 | V/µs |
Key Features
- Single supply operation: 3 V to 30 V
- Very low input bias current: 2 pA
- Wide input voltage range
- Rail-to-rail output swing
- Low supply current per amplifier: 500 µA
- Wide bandwidth: 2 MHz
- Slew rate: 2 V/µs
- No phase reversal
- Capacitive loads up to 350 pF can be handled without oscillation
Applications
- Photo diode preamplifiers
- Battery powered instrumentation
- Power supply control and protection
- Medical instrumentation
- Remote sensors
- Low voltage strain gage amplifiers
- DAC output amplifier
Q & A
- What is the input bias current of the AD824? The input bias current of the AD824 is typically 2 pA and can be up to 12 pA.
- What is the supply voltage range for the AD824? The AD824 can operate from a single supply of 3 V to 30 V and is also compatible with dual supplies up to ±15 V.
- What is the bandwidth of the AD824? The bandwidth of the AD824 is 2 MHz.
- Can the AD824 handle capacitive loads? Yes, the AD824 can handle capacitive loads up to 350 pF without oscillation.
- What are some common applications of the AD824? Common applications include photo diode preamplifiers, battery powered instrumentation, medical instrumentation, and low voltage strain gage amplifiers.
- What is the slew rate of the AD824? The slew rate of the AD824 is 2 V/µs.
- Does the AD824 have phase reversal? No, the AD824 does not have phase reversal.
- What is the typical supply current per amplifier for the AD824? The typical supply current per amplifier for the AD824 is 500 µA.
- What is the common-mode rejection ratio (CMRR) of the AD824? The CMRR of the AD824 is typically 74 dB.
- How many amplifiers are in the AD824 package? The AD824 is a quad operational amplifier, meaning it contains four amplifiers.
