Overview
The OPA827AIDRG4, produced by Texas Instruments, is a low-noise, high-precision JFET-input operational amplifier. This device combines outstanding DC precision with excellent AC performance, making it suitable for a wide range of applications. The OPA827 series offers low offset voltage, very low drift over temperature, low input bias current, and very low noise, particularly in the 0.1 Hz to 10 Hz frequency range. It operates over a wide supply voltage range of ±4 V to ±18 V and is available in 8-pin SOIC and 8-pin VSSOP surface-mount packages, specified from –40°C to 125°C.
Key Specifications
| Parameter | Typical | Maximum | Unit |
|---|---|---|---|
| Input Voltage Noise Density | 4 nV/√Hz at 1 kHz | - | nV/√Hz |
| Input Voltage Noise (0.1 Hz to 10 Hz) | 250 nVPP | - | nVPP |
| Input Bias Current | 3 pA | 10 pA | pA |
| Input Offset Voltage | 75 µV | 150 µV | µV |
| Input Offset Drift | 0.5 µV/°C | 2 µV/°C | µV/°C |
| Gain Bandwidth Product (GBW) | 22 MHz | - | MHz |
| Slew Rate | 28 V/µs | - | V/µs |
| Quiescent Current | 4.8 mA/Ch | - | mA/Ch |
| Supply Voltage Range | ±4 V to ±18 V | - | V |
| Operating Temperature Range | -40°C to 125°C | - | °C |
Key Features
- Low input offset voltage (150 µV maximum) and very low drift over temperature (0.5 µV/°C typical).
- Very low input bias current (3 pA typical) and low 0.1-Hz to 10-Hz noise (250 nVPP typical).
- High gain bandwidth product (22 MHz) and high slew rate (28 V/µs).
- Wide supply voltage range (±4 V to ±18 V) and low quiescent current (4.8 mA/Ch typical).
- Available in 8-pin SOIC and 8-pin VSSOP surface-mount packages.
- Ideal for high source impedance applications and transimpedance applications due to high impedance inputs.
Applications
- ADC Drivers
- DAC Output Buffers
- Test Equipment
- Medical Equipment
- PLL Filters
- Seismic Applications
- Transimpedance Amplifiers
- Integrators and Active Filters
- Professional Audio Applications
- 16-bit to 18-bit mixed signal systems and precision ±10-V front ends.
Q & A
- What is the input voltage noise density of the OPA827AIDRG4 at 1 kHz?
The input voltage noise density is 4 nV/√Hz at 1 kHz.
- What is the maximum input offset voltage of the OPA827AIDRG4?
The maximum input offset voltage is 150 µV.
- What is the typical input bias current of the OPA827AIDRG4?
The typical input bias current is 3 pA.
- What is the gain bandwidth product (GBW) of the OPA827AIDRG4?
The GBW is 22 MHz.
- What is the slew rate of the OPA827AIDRG4?
The slew rate is 28 V/µs.
- What is the quiescent current of the OPA827AIDRG4?
The quiescent current is 4.8 mA/Ch typical.
- What is the operating temperature range of the OPA827AIDRG4?
The operating temperature range is –40°C to 125°C.
- In what packages is the OPA827AIDRG4 available?
The OPA827AIDRG4 is available in 8-pin SOIC and 8-pin VSSOP surface-mount packages.
- What are some common applications of the OPA827AIDRG4?
Common applications include ADC drivers, DAC output buffers, test equipment, medical equipment, PLL filters, seismic applications, transimpedance amplifiers, integrators, active filters, and professional audio applications.
- Why is the OPA827AIDRG4 suitable for high source impedance applications?
The OPA827AIDRG4 is suitable for high source impedance applications due to its high impedance inputs and low current noise.
