Overview
The OPA4202, part of the OPAx202 family from Texas Instruments, is a precision operational amplifier built on TI's industry-leading super-beta, complementary, bipolar semiconductor process. This device offers exceptional DC precision, heavy capacitive load drive, and robust protection against external EMI, thermal, and short-circuit events. The OPA4202 is fully specified over a temperature range from –40°C to +105°C, making it suitable for a wide range of applications requiring high accuracy and reliability.
Key Specifications
| Parameter | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Offset Voltage (VOS) | VS = ±18 V | ±20 | ±200 | µV | |
| Input Offset Voltage Drift (dVOS/dT) | TA = –40°C to +105°C | ±0.5 | ±1 | µV/°C | |
| Input Bias Current (IB) | ±0.25 | ±2 | nA | ||
| Input Offset Current (IOS) | ±15 | ±150 | pA | ||
| Gain-Bandwidth Product (GBW) | 1 | MHz | |||
| Slew Rate (SR) | 10-V step, G = 1 | 0.35 | V/µs | ||
| Settling Time (tS) | To 0.1%, 10-V step, G = 1 | 30 | µs | ||
| Supply Voltage Range | ±2.25 V | ±18 V | V | ||
| Quiescent Current | VS = ±18 V | 580 | µA | ||
| Input Voltage Noise Density (en) | f = 10 Hz | 9.5 | nV/√Hz |
Key Features
- Precision Super-Beta Performance: Low offset voltage (±200 µV maximum) and ultra-low drift (±1 µV/°C maximum).
- Excellent Efficiency: Quiescent current of 580 µA (typical) and a gain-bandwidth product of 1 MHz.
- Heavy Capacitive Load Drive: Capable of driving heavy capacitive loads with a settling time of 5 µs for 25 nF.
- Ultra-High Input Impedance: Input impedance of 3000 GΩ and 0.5 pF.
- Protection Features: EMI hardened, thermal, and short-circuit protection.
- Low Noise: Low input voltage noise (9 nV/√Hz at 10 Hz) and low 0.1-Hz to 10-Hz noise (0.2 µVPP).
- Wide Supply Voltage Range: Operates from ±2.25 V to ±18 V.
- High CMRR and AOL: Common-mode rejection ratio (CMRR) and open-loop gain (AOL) of 126 dB minimum.
- Low Bias Current: Input bias current of 2 nA maximum).
Applications
- Data Acquisition (DAQ): Suitable for precise data acquisition systems.
- Lab and Field Instrumentation: Ideal for various instrumentation applications requiring high precision).
- Multiparameter Patient Monitors: Used in medical devices for accurate patient monitoring).
- String Inverters: Applicable in renewable energy systems for precise signal processing).
- Merchant Network and Server Power Supplies: Can be used in power supply units for servers and network equipment).
Q & A
- What is the typical quiescent current of the OPA4202?
The typical quiescent current of the OPA4202 is 580 µA at ±18 V supply voltage).
- What is the maximum input offset voltage of the OPA4202?
The maximum input offset voltage of the OPA4202 is ±200 µV).
- What is the gain-bandwidth product of the OPA4202?
The gain-bandwidth product of the OPA4202 is 1 MHz).
- What is the slew rate of the OPA4202?
The slew rate of the OPA4202 is 0.35 V/µs for a 10-V step with a gain of 1).
- What is the settling time of the OPA4202?
The settling time to 0.1% for a 10-V step with a gain of 1 is 30 µs).
- What is the input voltage noise density of the OPA4202?
The input voltage noise density at 10 Hz is 9.5 nV/√Hz).
- What is the common-mode rejection ratio (CMRR) of the OPA4202?
The CMRR of the OPA4202 is 126 dB minimum).
- What is the power supply rejection ratio (PSRR) of the OPA4202?
The PSRR of the OPA4202 is 126 dB minimum).
- What are the protection features of the OPA4202?
The OPA4202 features EMI hardened, thermal, and short-circuit protection).
- What are the typical applications of the OPA4202?
The OPA4202 is typically used in data acquisition, lab and field instrumentation, multiparameter patient monitors, string inverters, and merchant network and server power supplies).
