OP42GSZ-REEL7 - Fast Precision JFET Op Amp | Analog Devices
MPN: OP42GSZ-REEL7 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $9.28 | $9.28 |
| 10 | $8.5 | $85.00 |
| 100 | $7.2 | $720.00 |
| 500 | $6.1 | $3,050.00 |
| 1,000 | $5.4 | $5,400.00 |
Drop-in alternatives for OP42GSZ-REEL7 — 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:
OP42GSZ-R7
✅ Drop-In📋 Reference alternative (not in catalog)
OP42GS-REEL7
✅ Drop-In📋 Reference alternative (not in catalog)
OP42GSZ
✅ Drop-In✓ In Stock
$8.25 / Unit
View Datasheet →AD711
✅ Drop-In📋 Reference alternative (not in catalog)
LF400
✅ Drop-In📋 Reference alternative (not in catalog)
OP42GSZ-REEL7 Maximum Ratings & Electrical Characteristics
| Amplifier Type | J-FET |
| Number of Circuits | 1 |
| Slew Rate | 58 V/µs (typical) |
| Gain Bandwidth Product | 10 MHz |
| Full Power Bandwidth | 900 kHz |
| Settling Time | 800 ns to 0.01% |
| Input Offset Voltage | 5 mV (max) |
| Common Mode Rejection Ratio | 94 dB (nominal) |
| Supply Voltage Range | ±4.5 V to ±20 V |
| Supply Current | 6 mA (max) |
| Input Bias Current | [DATA_NEEDED: Input Bias Current] |
| Operating Temperature Range | -40°C to +85°C |
| Package | 8-SOIC |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
OP42GSZ-REEL7 Pin Configuration
| Pin 1 | OFFSET NULL — Offset null adjustment |
| Pin 2 | IN- — Inverting input |
| Pin 3 | IN+ — Non-inverting input |
| Pin 4 | V- — Negative supply |
| Pin 5 | OFFSET NULL — Offset null adjustment |
| 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
OP42GSZ-REEL7 is suitable for 6 applications: High-Speed Data Acquisition, Active Filters, Precision Instrumentation, Audio Signal Processing, Test and Measurement, Industrial Control.
High-Speed Data Acquisition
The OP42GSZ-REEL7's 58 V/µs slew rate and 800 ns settling time to 0.01% make it ideal for buffering fast analog signals in data acquisition systems. Its high bandwidth ensures minimal signal distortion when driving ADC inputs, and the JFET input stage provides high impedance to avoid loading the source. In a typical SAR ADC front-end, the op amp is configured as a unity-gain buffer or gain stage, with a 10 MHz gain-bandwidth product supporting high-throughput sampling. The fast settling ensures the output stabilizes within the ADC acquisition window, preserving accuracy. For best performance, use a low-impedance source and place a small RC filter at the output to limit noise.
Recommended
Active Filters
With a gain-bandwidth product of 10 MHz, the OP42GSZ-REEL7 is well-suited for active filter designs in the audio and low-frequency range. Its high slew rate prevents distortion in high-Q filters where large signal swings occur. The JFET input provides low bias current, allowing the use of high-value resistors without offset errors. For a second-order low-pass filter, the op amp can be configured in a Sallen-Key topology with cutoff frequencies up to 1 MHz. The wide full-power bandwidth of 900 kHz ensures the filter maintains its response at high amplitudes. Designers should select capacitor values carefully to avoid parasitic oscillations, and use metal-film resistors for stability.
Recommended
Precision Instrumentation
The OP42GSZ-REEL7's low offset voltage (5 mV max) and high CMRR (94 dB) make it suitable for precision instrumentation amplifiers. Its JFET input ensures negligible loading on high-impedance sensors, such as pH probes and photodiodes. In a typical instrumentation amplifier, the OP42 can be used as a buffer or gain stage, providing high input impedance and stable gain. The 10 MHz bandwidth allows accurate amplification of fast sensor signals, while the fast settling time ensures quick response to transients. For best accuracy, use precision resistors with low temperature coefficients and provide proper shielding to minimize noise pickup.
Recommended
Audio Signal Processing
Although not specifically designed for audio, the OP42GSZ-REEL7's high slew rate and low distortion make it usable in audio applications such as headphone amplifiers and active crossovers. Its 10 MHz bandwidth ensures flat response across the audio spectrum, and the JFET input provides high impedance for volume control circuits. The symmetric slew rate of 58 V/µs allows large output swings without slew-induced distortion, preserving audio fidelity. However, for ultra-low-noise audio designs, consider dedicated audio op amps like the OPA1612. When using the OP42 in audio, ensure proper power supply decoupling and use high-quality capacitors in the signal path.
Recommended
Test and Measurement
In test and measurement equipment, the OP42GSZ-REEL7 provides fast, accurate signal conditioning for oscilloscope front-ends, waveform generators, and spectrum analyzers. Its high slew rate and bandwidth allow faithful reproduction of high-frequency waveforms, while the fast settling time ensures accurate amplitude measurements. The JFET input minimizes loading on the device under test, preserving signal integrity. For example, in an oscilloscope input stage, the OP42 can be used as a buffer or gain stage with a bandwidth of 10 MHz, suitable for many general-purpose measurements. The wide supply voltage range allows operation from ±15 V rails commonly found in bench instruments.
Recommended
Industrial Control
The OP42GSZ-REEL7's industrial temperature range (-40°C to +85°C) and robust design make it suitable for industrial control systems, such as motor control loops and process transmitters. Its high slew rate enables fast response in closed-loop control, while the JFET input provides high impedance for sensor interfaces. In a PID controller, the op amp can be used in the error amplifier stage, providing high gain and bandwidth for accurate control. The 10 MHz gain-bandwidth product allows the controller to respond to rapid changes in process variables. For harsh environments, ensure proper PCB layout and use conformal coating to protect against moisture and vibration.
Recommended
Recommended Products Summary
Engineering reference data for OP42GSZ-REEL7 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | OP42GSZ-R7 | OP42GS-REEL7 | OP42GSZ | OP42GPZ | AD711 | LF400 |
|---|---|---|---|---|---|---|---|
| Package | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-PDIP | 8-SOIC | 8-SOIC |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | National Semiconductor |
| Slew Rate | 58 V/µs | 58 V/µs | 58 V/µs | 58 V/µs | 58 V/µs | 20 V/µs | 30 V/µs |
| Gain Bandwidth Product | 10 MHz | 10 MHz | 10 MHz | 10 MHz | 10 MHz | 4 MHz | 5 MHz |
| Input Offset Voltage (max) | 5 mV | 5 mV | 5 mV | 5 mV | 5 mV | 2 mV | 5 mV |
| Supply Current (max) | 6 mA | 6 mA | 6 mA | 6 mA | 6 mA | 2.5 mA | 5 mA |
| Settling Time (0.01%) | 800 ns | 800 ns | 800 ns | 800 ns | 800 ns | 1 µs | 1.5 µs |
| RoHS Compliant | Yes | Yes | No | Yes | Yes | Yes | Yes |
Key Differentiators
- Higher slew rate than AD711 (vs AD711)
- Faster settling time than LF400 (vs LF400)
- RoHS compliant vs OP42GS-REEL7 (vs OP42GS-REEL7)
Design Notes
The OP42GSZ-REEL7 operates from dual supplies up to ±20 V. Ensure that the supply voltages are within the absolute maximum ratings and are properly decoupled with 0.1 µF ceramic capacitors placed close to the V+ and V- pins. For high-frequency applications, add a 10 µF tantalum capacitor in parallel to filter low-frequency noise.
For optimal performance, place the OP42GSZ-REEL7 on a PCB with a solid ground plane. Keep the input traces short and shielded to minimize parasitic capacitance and noise pickup. Use surface-mount components to reduce lead inductance. The 8-SOIC package has a thermal pad on the bottom; connect it to the ground plane for improved heat dissipation.
Avoid driving capacitive loads greater than 100 pF directly, as this may cause oscillation. If larger loads are required, add a series resistor of 50-100 Ω at the output. Also, ensure that the input common-mode voltage does not exceed the specified range, as this can cause phase reversal in some JFET op amps.
Compliance Information
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified.
