Overview
The OP293ESZ, produced by Analog Devices Inc., is a precision, micropower operational amplifier. It is part of the OP193/OP293 family, which is known for its high precision, low supply current, and the ability to operate at low voltages. These amplifiers are designed for high performance in single-supply systems, with input and output ranges that include ground, and outputs that swing from the negative rail to within 600 mV of the positive supply. This makes them particularly useful for battery-powered equipment and low-voltage applications.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Offset Voltage | VOS | −40°C ≤ TA ≤ +125°C | 100 μV | 250 μV | 350 μV | μV |
| Input Bias Current | IB | VCM = 0 V, −40°C ≤ TA ≤ +125°C | 15 nA | 20 nA | nA | nA |
| Input Offset Current | IOS | VCM = 0 V, −40°C ≤ TA ≤ +125°C | 2 nA | 4 nA | nA | nA |
| Input Voltage Range | VCM | −14.9 V ≤ VCM ≤ +14 V | −14.9 V | +13.5 V | V | V |
| Common-Mode Rejection Ratio | CMRR | −14.9 V ≤ VCM ≤ +14 V, −40°C ≤ TA ≤ +125°C | 97 dB | 116 dB | dB | dB |
| Large Signal Voltage Gain | AVO | RL = 100 kΩ, 0.03 V ≤ VOUT ≤ 1 V | 60 V/mV | 70 V/mV | V/mV | V/mV |
| Supply Current | 15 μA | μA | μA |
Key Features
- Operates from +1.7 V to ±18 V, making it suitable for low-voltage applications.
- Low supply current of 15 μA per amplifier, ideal for battery-powered devices.
- High precision with a low offset voltage of 100 μV maximum.
- Outputs can sink and source up to ±8 mA.
- No phase reversal, ensuring stable operation.
- Single- or dual-supply operation, offering flexibility in design.
- High open-loop gain of 600 V/mV and unity-gain stable.
- Input transistors can operate down to ground potential, enhancing input range.
Applications
- Digital scales
- Strain gages
- Portable medical equipment
- Battery-powered instrumentation
- Temperature transducer amplifiers
Q & A
- What is the operating voltage range of the OP293ESZ?
The OP293ESZ can operate from +1.7 V to ±18 V.
- What is the typical supply current of the OP293ESZ?
The typical supply current is 15 μA per amplifier.
- What is the maximum offset voltage of the OP293ESZ?
The maximum offset voltage is 100 μV.
- Can the OP293ESZ operate in single-supply or dual-supply configurations?
Yes, it can operate in both single-supply and dual-supply configurations.
- What is the common-mode rejection ratio (CMRR) of the OP293ESZ?
The CMRR is typically 116 dB.
- What are some typical applications of the OP293ESZ?
Typical applications include digital scales, strain gages, portable medical equipment, battery-powered instrumentation, and temperature transducer amplifiers.
- Does the OP293ESZ have phase reversal issues?
No, the OP293ESZ does not have phase reversal issues.
- What is the large signal voltage gain of the OP293ESZ?
The large signal voltage gain is typically 60 V/mV to 70 V/mV.
- Can the inputs of the OP293ESZ operate down to ground potential?
Yes, the input transistors can operate down to ground potential.
- What is the output current capability of the OP293ESZ?
The outputs can sink and source up to ±8 mA.
