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Analog Devices Inc. OP37EN8#PBF
- Part No.:
- OP37EN8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
OP37EN8#PBF.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,928
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Product details
Overview
OP37EN8#PBF from Analog Devices is a low-noise, precision, high-speed operational amplifier optimized for closed-loop gains >5, featuring 3.0 nV/√Hz input voltage noise density at 1 kHz, 17 V/µs slew rate, and 63 MHz gain-bandwidth product. It delivers ±11.5 V output swing into 2 kΩ with 126 dB CMRR and replaces OP-07 and SE5534 in high-gain instrumentation and professional audio signal chains.
For engineers reviewing the OP37EN8#PBF datasheet, OP37EN8#PBF pinout, OP37EN8#PBF application, or OP37EN8#PBF equivalent, this page provides verified specifications, package mapping to 8-lead plastic DIP (P suffix), validated pin functions, real-world application context for phono preamps and data acquisition, and two confirmed alternative parts with documented technical differences.
Technical Context
The OP37EN8#PBF uses a decompensated architecture requiring minimum closed-loop gain of 5 for stability, enabling higher slew rate (17 V/µs) and bandwidth (63 MHz) than unity-gain-stable predecessors like OP27. Its input stage employs bias-current cancellation to achieve 10 nA typical input bias current while maintaining ultra-low voltage noise.
On-chip zener-zap trimming sets initial offset voltage (10 µV max for A grade, 20 µV max for E grade), and external 10 kΩ potentiometer adjustment supports ±4 mV fine-tuning without degrading drift performance. The device operates across 0°C to +70°C (OP37E grade) with ±15 V supply and exhibits 2.7 Hz 1/f noise corner frequency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Noise Density | 3.0 nV/√Hz @ 1 kHz - enables high-fidelity amplification of microvolt-level sensor signals without dominating system noise floor |
| Slew Rate | 17 V/µs - supports clean 20 Vpp output at ≥250 kHz full-power bandwidth for fast transient response |
| Gain-Bandwidth Product | 63 MHz - allows stable operation at gain ≥5 with usable bandwidth up to 12.6 MHz at G = 5 |
| Input Offset Voltage (Max) | 20 µV - ensures ≤0.2 mV error in 10 V full-scale precision measurement systems after warm-up |
| CMRR | 126 dB @ ±11 V common-mode - rejects >99.9997% of power-supply-coupled interference in single-supply-derived rails |
| Output Swing | ±11.5 V into 2 kΩ - delivers rail-to-rail usable dynamic range for ±15 V supplies in analog front-ends |
| Long-Term Drift | 0.2 µV/month - guarantees <2.4 µV total offset shift over 1 year, critical for unattended instrumentation |
Pinout & Package
OP37EN8#PBF is packaged in an 8-lead plastic DIP (P suffix), compliant with JEDEC MS-001, with 0.3-inch body width and 0.1-inch lead pitch. Thermal resistance θJA = 103°C/W under standard socket mounting conditions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOS ADJ. (Null) | Connects to wiper of 10 kΩ potentiometer for external offset trimming; no connection required for standard use |
| 2 | Inverting Input (–) | Differential input node; high-impedance (1.3 MΩ differential, 2.5 GΩ common-mode) for precision feedback networks |
| 3 | Non-Inverting Input (+) | Differential input node; matched to Pin 2 for common-mode rejection; sensitive to thermoelectric EMFs at dissimilar metal junctions |
| 4 | V– | Negative supply terminal; must be decoupled with ≥0.1 µF ceramic capacitor close to pin for stability |
| 5 | NC | No internal connection; left unconnected per datasheet; not used for thermal or shielding purposes |
| 6 | Output | Class-AB output stage capable of ±10 V into 600 Ω with <0.01% THD+N at 3 Vrms |
| 7 | V+ | Positive supply terminal; requires local ≥0.1 µF ceramic decoupling; supports ±4 V to ±18 V dual supply operation |
| 8 | VOS ADJ. (Null) | Second null terminal; connected to opposite end of same 10 kΩ potentiometer as Pin 1 for symmetric adjustment |
Key Features
| Feature | Design Value |
|---|---|
| Low 1/f noise corner | 2.7 Hz - ensures minimal low-frequency drift in DC-coupled microphone and strain-gauge amplifiers |
| Bias-current cancellation | 10 nA typical IB, 7 nA typical IOS - preserves accuracy with high-impedance sources up to 10 kΩ without added guard traces |
| Zener-zap wafer trimming | Stable offset calibration over lifetime - eliminates need for post-package re-trimming in production test flow |
| High PSRR & CMRR | ≥120 dB PSRR/CMRR - maintains signal integrity in noisy industrial environments with shared ground returns |
| Load capacitance tolerance | Stable with ≤1000 pF capacitive loads - simplifies driving coaxial cables or ADC input filters without isolation resistors |
Applications
| Phono Preamp (RIAA) | Tape Head Amplifier |
|---|---|
Use Scenario: Amplifying low-level moving-magnet cartridge signals (typically 5 mV) with precise RIAA equalization curve (3180/318/75 µs time constants). IC Role / Device Role / Timing Role: Primary gain block in frequency-dependent feedback network; sets noise floor and distortion performance for entire playback chain. Use Value: 3.0 nV/√Hz input noise and 0.01% THD+N at 3 Vrms enable >90 dB SNR in vinyl playback systems without additional noise-shaping circuitry. |
Use Scenario: Boosting weak tape head outputs (≤100 µV) while applying NAB equalization (3180/50 µs) for analog magnetic tape reproduction. IC Role / Device Role / Timing Role: High-slew, decompensated gain stage enabling wide bandwidth (>100 kHz) without unity-gain instability. Use Value: 17 V/µs slew rate prevents slew-induced distortion on high-frequency transients (e.g., cymbal decay), preserving transient fidelity in studio monitoring. |
| Data Acquisition Front-End | Professional Audio Line Driver |
Use Scenario: Conditioning sensor outputs (thermocouples, LVDTs) before 16-bit+ SAR or sigma-delta ADCs in industrial PLC modules. IC Role / Device Role / Timing Role: Precision buffer and gain stage; provides low-drift, low-noise interface between high-impedance sensors and ADC reference planes. Use Value: 0.2 µV/°C drift and 20 µV max VOS limit gain error to <0.02% in 10 V full-scale systems, meeting Class A metrology requirements. |
Use Scenario: Driving balanced XLR outputs in mixing consoles and outboard gear where low THD and high output current are mandatory. IC Role / Device Role / Timing Role: Output line driver with ±10 V swing into 600 Ω; handles reactive loads from long cable runs without oscillation. Use Value: Guaranteed ±10 V swing into 600 Ω with <0.03% THD+N at 20 kHz enables direct connection to pro-audio equipment without external buffers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP27GP | Unity-gain stable; lower slew rate (8 V/µs); higher 1/f corner (10 Hz); 25 µV max VOS | Preferred for G = 1–4 circuits; unsuitable for >5 MHz closed-loop bandwidth at G ≥ 5 | Select OP27GP only when unity-gain stability or lower quiescent current (1.2 mA vs. 3.8 mA) is required |
| OPA211IDR | Zero-drift auto-zero architecture; 1.1 nV/√Hz noise; 1.1 µV max VOS; 36 V supply range | Superior DC accuracy and drift (<0.012 µV/°C); higher cost; not drop-in due to different pinout (SO-8) | Choose OPA211IDR for sub-µV offset-critical DC applications; OP37EN8#PBF remains optimal for AC-coupled audio and medium-speed DAQ |
Compared with OP27GP and OPA211IDR, OP37EN8#PBF uniquely balances high slew rate, low 1/f noise, and proven reliability in legacy audio sockets-making it the preferred choice for RIAA/tape preamps and gain ≥5 instrumentation where stability margins and thermal EMF rejection are design priorities.
Availability
OP37EN8#PBF is available at Aetrix Electronics and suitable for professional audio equipment, precision data acquisition systems, and industrial sensor signal conditioning requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for OP37EN8#PBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, communications, automotive, and consumer markets since 1965.
The OP37EN8#PBF belongs to Analog Devices' precision op amp product line, engineered specifically for high-gain (>5), low-noise, wideband applications including audio preamplification, instrumentation, and sensor signal conditioning.
FAQ
What is the minimum stable closed-loop gain for OP37EN8#PBF?
The OP37EN8#PBF is decompensated and requires a minimum closed-loop gain of 5 for stability. Operating below G = 5 risks oscillation due to phase margin reduction; for unity-gain applications, OP27GP or OP177 should be selected instead. This design enables its 17 V/µs slew rate and 63 MHz GBW-key advantages over unity-stable alternatives.
Does OP37EN8#PBF support dual ±15 V supplies?
Yes, OP37EN8#PBF is fully specified for ±15 V operation (total supply 30 V), with absolute maximum rating of ±22 V. It delivers ±11.5 V output swing into 2 kΩ and maintains 126 dB CMRR at ±11 V common-mode voltage. Supply current is 3.8 mA typical at ±15 V, making it suitable for linear power supply-based audio and instrumentation designs.
Can OP37EN8#PBF replace OP-07 in existing sockets?
Yes, OP37EN8#PBF is pin-compatible with OP-07 in 8-lead DIP sockets and may be inserted directly without PCB modification. However, external nulling components used for OP-07 should be removed or reconfigured, as OP37EN8#PBF's internal trimming reduces reliance on external pots-and its higher slew rate demands attention to layout parasitics in high-frequency layouts.
What is the input voltage noise corner frequency of OP37EN8#PBF?
The OP37EN8#PBF has a measured 1/f noise corner frequency of 2.7 Hz, verified per TPC 2 in the official datasheet. This low corner-combined with 3.0 nV/√Hz white noise at 1 kHz-makes it exceptionally effective for DC-coupled, low-frequency precision applications such as strain-gauge bridges and thermopile amplifiers where sub-10 Hz noise dominates system error budgets.
Is OP37EN8#PBF suitable for driving capacitive loads?
Yes, OP37EN8#PBF is stable driving up to 1000 pF capacitive loads with ±10 V output swing, as confirmed by TPC 22 (small-signal overshoot vs. capacitive load). For loads exceeding 1000 pF, a 50 Ω series resistor inside the feedback loop is recommended to maintain phase margin-critical for driving coaxial cables or ADC input sampling capacitors without ringing.
OP37EN8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 17V/µs
- Gain Bandwidth Product:
- 63 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 10 nA
- Voltage - Input Offset:
- 10 µV
- Current - Supply:
- -
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 8 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -25°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
OP37EN8#PBF FAQ
1.How can I place an order for OP37EN8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for OP37EN8#PBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for OP37EN8#PBF reliable?
The price and inventory of OP37EN8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OP37EN8#PBF is usually 5 days.
3.What payment methods are accepted for OP37EN8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OP37EN8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OP37EN8#PBF?
OP37EN8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OP37EN8#PBF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for OP37EN8#PBF?
For technical support, including OP37EN8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OP37EN8#PBF requirements.
6.How does Aetrix verify that OP37EN8#PBF is sourced from the original manufacturer or authorized distributors?
All OP37EN8#PBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that OP37EN8#PBF meets industry standards.
7.What is the process for return or replacement of OP37EN8#PBF?
All OP37EN8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with OP37EN8#PBF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The OP37EN8#PBF part is unused and in its original packaging.
Return procedure for OP37EN8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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