OPA627 - Precision High-Speed JFET Op Amp | Texas Instruments
MPN: OPA627 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.2 | $112.00 |
| 100 | $9.8 | $980.00 |
| 500 | $8.5 | $4,250.00 |
| 1,000 | $7.9 | $7,900.00 |
Drop-in alternatives for OPA627 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
OPA827
✅ Drop-In✓ In Stock
$2.88 / Unit
View Datasheet →OPA637
✅ Drop-In📋 Reference alternative (not in catalog)
OPA828
✅ Drop-In📋 Reference alternative (not in catalog)
AD797
✅ Drop-In📋 Reference alternative (not in catalog)
ADA4627
✅ Drop-In📋 Reference alternative (not in catalog)
OPA627 Maximum Ratings & Electrical Characteristics
| Slew Rate | 55 V/µs |
| Maximum Offset Voltage | 100 µV |
| Maximum Drift | 0.8 µV/°C |
| Input Bias Current | 5 pA |
| Noise at 10 kHz | 4.5 nV/√Hz |
| Settling Time (0.01%) | [DATA_NEEDED: settling time value] |
| Supply Voltage Range | 9 V to 36 V (±4.5 V to ±18 V) |
| Operating Temperature Range (P and D packages) | -25°C to 85°C |
| Operating Temperature Range (LMC package) | -55°C to 125°C |
| Package Options | 8-pin DIP, SOIC, and others |
| Unity-Gain Stable | Yes |
| Input Type | JFET |
| Number of Circuits | 1 |
| RoHS Status | [DATA_NEEDED: RoHS status] |
| Amplifier Type | Precision, High-Speed |
OPA627 Pin Configuration
| Pin 1 | Offset Trim — Offset voltage trim input |
| Pin 2 | IN- — Inverting input |
| Pin 3 | IN+ — Non-inverting input |
| Pin 4 | V- — Negative supply |
| Pin 5 | Offset Trim — Offset voltage trim input |
| Pin 6 | OUT — Output |
| Pin 7 | V+ — Positive supply |
| Pin 8 | NC — No connection |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
OPA627 is suitable for 6 applications: Precision Instrumentation, High-End Audio Preamplifier, Active Filters, Photodiode Amplifier, Data Acquisition Systems, Test and Measurement Equipment.
Precision Instrumentation
The OPA627's low offset voltage (100µV max) and low drift (0.8µV/°C) ensure accurate signal conditioning in precision measurement systems. Its high slew rate of 55V/µs allows fast response to transient signals, while the JFET input minimizes loading on high-impedance sensors. This makes it ideal for data acquisition front-ends and sensor amplifiers where accuracy is paramount.
Recommended
High-End Audio Preamplifier
With a noise of 4.5nV/√Hz at 10kHz and high slew rate, the OPA627 delivers clean, detailed audio reproduction. Its low distortion and wide bandwidth preserve the original signal integrity, making it a favorite in audiophile-grade preamps and DAC output stages. The JFET input provides high input impedance, matching well with high-impedance sources like guitar pickups and phono cartridges.
Recommended
Active Filters
The OPA627's high slew rate and wide bandwidth make it suitable for active filter designs, such as low-pass and high-pass filters in signal processing. Its low offset voltage ensures minimal DC error, and the high input impedance allows easy implementation of Sallen-Key topologies. The device's stability with capacitive loads simplifies filter design.
Recommended
Photodiode Amplifier
The OPA627's low input bias current of 5pA is essential for photodiode transimpedance amplifiers, where leakage currents can cause significant errors. Its low noise and high speed enable accurate detection of fast optical signals. The JFET input also provides high impedance, minimizing loading on the photodiode and preserving signal integrity.
Recommended
Data Acquisition Systems
In data acquisition, the OPA627 provides precise signal conditioning before ADC conversion. Its low offset and drift ensure accurate DC measurements, while the high slew rate supports fast sampling rates. The device's wide supply range allows operation in various system voltages, and its low noise improves the signal-to-noise ratio of the entire acquisition chain.
Recommended
Test and Measurement Equipment
The OPA627's precision and speed make it ideal for test equipment such as oscilloscope front-ends and signal generators. Its low noise and high bandwidth ensure accurate signal reproduction, while the low offset voltage minimizes measurement errors. The device's robustness over temperature ranges supports reliable operation in benchtop and field instruments.
Recommended
Recommended Products Summary
Engineering reference data for OPA627 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | OPA827 | OPA637 | OPA828 | AD797 | ADA4627 |
|---|---|---|---|---|---|---|
| Package | DIP-8, SOIC-8 | SOIC-8 | DIP-8 | SOIC-8 | SOIC-8 | SOIC-8 |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Analog Devices | Analog Devices |
| Slew Rate | 55 V/µs | 28 V/µs | 135 V/µs | 30 V/µs | 20 V/µs | 48 V/µs |
| Input Bias Current | 5 pA | 15 pA | 5 pA | 15 pA | 250 nA | 25 pA |
| Noise at 10 kHz | 4.5 nV/√Hz | 4 nV/√Hz | 4.5 nV/√Hz | 4 nV/√Hz | 0.9 nV/√Hz | 4.2 nV/√Hz |
| Offset Voltage (max) | 100 µV | 150 µV | 100 µV | 150 µV | 25 µV | 120 µV |
| Supply Voltage Range | 9V to 36V | 8V to 36V | 9V to 36V | 8V to 36V | 9V to 36V | 9V to 36V |
| Unity-Gain Stable | Yes | Yes | No (gain>=5) | Yes | Yes | Yes |
Key Differentiators
- Lower noise than OPA637 (vs OPA637)
- JFET input with lower bias current than AD797 (vs AD797)
- Higher slew rate than OPA827 (vs OPA827)
Design Notes
Ensure proper power supply decoupling with 0.1µF ceramic capacitors placed close to the V+ and V- pins. Additionally, use 10µF tantalum capacitors in parallel for low-frequency decoupling. This minimizes power supply noise and ensures stable operation, especially in high-speed applications.
For optimal noise performance, use a ground plane and keep the feedback network components close to the op amp. Avoid running high-speed digital traces near the input pins to prevent coupling. Use short, direct traces for the input and output to minimize parasitic capacitance and inductance.
The OPA627 has a maximum supply voltage of 36V. Exceeding this can damage the device. Also, be cautious with capacitive loads; although the OPA627 is stable with moderate capacitive loads, large capacitors may cause ringing. Use a small series resistor (e.g., 50Ω) at the output if driving long cables or large capacitive loads.
Compliance Information
Compliance information not provided in the verified data. Check TI product page for RoHS and REACH status.
