Overview
The OP293ES from Analog Devices Inc. is a precision, micropower operational amplifier designed for high performance in single-supply systems. This amplifier features a combination of high precision, low supply current, and the ability to operate at low voltages. The OP293ES is particularly useful in applications requiring high accuracy and low power consumption, making it ideal for battery-powered equipment and other 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 to +13.5 V | V | V | ||
| Common-Mode Rejection Ratio | CMRR | −14.9 V ≤ VCM ≤ +14 V | 97 dB | 116 dB | dB | dB |
| Large Signal Voltage Gain | AVO | RL = 100 kΩ, 0.03 V ≤ VOUT ≤ 4.0 V | 200 V/mV | 200 V/mV | V/mV | V/mV |
| Supply Current per Amplifier | ISY | VCM = 2.5 V, RL = ∞ | 14.5 μA | 14.5 μA | μA | μA |
| Power Supply Rejection Ratio | PSRR | VS = ±1.7 V to ±6.0 V | 94 dB | 120 dB | dB | dB |
Key Features
- Operates from +1.7 V to ±18 V, making it suitable for low-voltage applications.
- Low supply current: 15 µA per amplifier, ideal for battery-powered devices.
- High precision with low offset voltage: 100 µV maximum.
- Outputs can sink and source up to ±8 mA.
- No phase reversal; includes lateral PNP transistors to protect against phase reversal.
- High open-loop gain: 600 V/mV.
- Unity-gain stable.
- High common-mode rejection ratio (CMRR): up to 116 dB.
Applications
- Digital scales and strain gages.
- Portable medical equipment.
- Battery-powered instrumentation.
- Temperature transducer amplifiers.
Q & A
- What is the minimum supply voltage for the OP293ES?
The OP293ES can operate with a minimum supply voltage of +1.7 V or ±0.85 V.
- What is the typical supply current per amplifier for the OP293ES?
The typical supply current per amplifier is 14.5 µA.
- What is the maximum offset voltage for the OP293ES?
The maximum offset voltage is 350 µV over the temperature range of −40°C to +125°C.
- Does the OP293ES exhibit phase reversal?
No, the OP293ES includes lateral PNP transistors to protect against phase reversal.
- What is the common-mode rejection ratio (CMRR) of the OP293ES?
The CMRR is up to 116 dB).
- What are some typical applications of the OP293ES?
Typical applications include digital scales, strain gages, portable medical equipment, and battery-powered instrumentation).
- What is the large signal voltage gain of the OP293ES?
The large signal voltage gain is 200 V/mV with a load resistance of 100 kΩ).
- Is the OP293ES unity-gain stable?
Yes, the OP293ES is unity-gain stable).
- What is the power supply rejection ratio (PSRR) of the OP293ES?
The PSRR is up to 120 dB).
- What package types are available for the OP293ES?
The OP293ES is available in an SMD SOIC-8 package).
