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Analog Devices Inc. LT1037CN8#PBF
- Part No.:
- LT1037CN8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
LT1037CN8#PBF.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:288
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Product details
Overview
LT1037CN8#PBF from Analog Devices (formerly Linear Technology) is a precision, decompensated operational amplifier optimized for high closed-loop gain, low-noise signal conditioning in DC to 5Hz applications. It delivers 60MHz gain bandwidth product (AVCL ≥ 5), 11V/µs slew rate, 4.5nV/√Hz @ 10Hz input voltage noise, and guaranteed 25µV max input offset voltage at 0°C to 70°C - enabling microvolt-accuracy amplification in strain gauge interfaces and audio preamplifiers.
For engineers reviewing the LT1037CN8#PBF datasheet, LT1037CN8#PBF pinout, LT1037CN8#PBF application, or LT1037CN8#PBF equivalent, key selection criteria include its decompensated stability requirement (minimum AVCL = 5), ultra-low 1/f corner (2Hz), 8-pin PDIP package compatibility with OP-27/OP-37 sockets, and verified performance in sine-wave generation (<0.0025% THD) and infrared detector preamplification.
Technical Context
The LT1037CN8#PBF uses a high-bias-input-stage architecture (120µA) to achieve 2.5nV/√Hz wideband noise - lower than a 400Ω resistor - while maintaining 117dB min CMRR and 106dB min PSRR. Its decompensated design requires closed-loop gains ≥5 for stability, leveraging a 60MHz GBW to sustain 0.01% gain accuracy up to 5Hz at AVCL = 1000.
Input stage optimization yields 60nVP-P (0.1Hz–10Hz), 0.6µV/°C max drift, and 7M min open-loop gain into 2kΩ. The dual VOS trim pins enable post-installation offset correction without degrading thermal drift, supporting precision nulling in instrumentation-grade circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 60MHz at AVCL ≥ 5 - enables stable high-gain, wideband amplification without external compensation. |
| Slew Rate | 11V/µs min - supports fast transient response in audio gain stages and sine-wave generators. |
| Input Voltage Noise | 4.5nV/√Hz @ 10Hz - ensures minimal contribution to system noise floor in low-frequency sensor interfaces. |
| Input Offset Voltage | 25µV max (0°C to 70°C) - guarantees microvolt-level DC accuracy in threshold detection and bridge amplifiers. |
| Common Mode Rejection | 117dB min - rejects power supply and environmental interference in single-supply-derived rails. |
| Supply Voltage Range | ±22V - accommodates industrial ±15V systems with margin for transient overvoltage. |
| Operating Temperature | 0°C to 70°C - validated for commercial-grade embedded instrumentation and test equipment. |
Pinout & Package
LT1037CN8#PBF is housed in an 8-lead PDIP (N8) package with 0.300-inch width, RoHS-compliant matte tin lead finish, and JEDEC-standard footprint compatible with OP-27/OP-37 sockets.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8 | VOS Trim | Connects to 10kΩ potentiometer wiper for offset nulling; trimming to ±2.5mV range does not degrade drift spec. |
| 2 | Inverting Input (–) | Differential input node; protected by back-to-back diodes (±0.7V differential limit). |
| 3 | Noninverting Input (+) | Differential input node; matched impedance critical for CMRR performance. |
| 4 | V– | Negative supply rail connection; also serves as case ground in metal-can variants (not applicable to PDIP). |
| 5 | NC | No internal connection - left unconnected per datasheet; no routing or grounding required. |
| 6 | Output | Capable of ±12.5V swing into 2kΩ load; drives 300Ω loads to ±10V with external buffer assistance. |
| 7 | V+ | Positive supply rail connection; decoupling capacitor (0.1µF) recommended within 1cm. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low 1/f noise corner | 2Hz - minimizes low-frequency drift in DC-coupled sensor amplifiers and precision integrators. |
| Guaranteed decompensated stability | Stable only at AVCL ≥ 5 - eliminates need for external compensation capacitors in high-gain configurations. |
| High open-loop gain | 7M min into 2kΩ - ensures <0.01% gain error at AVCL = 1000 up to 5Hz. |
| Low long-term drift | 0.2µV/month typical - supports calibration intervals >1 year in metrology-grade equipment. |
| Direct socket replacement | Pin-compatible with OP-07, OP-27, OP-37, and 5534 - enables drop-in upgrade without PCB changes. |
Applications
| Strain Gauge Amplifier | Infrared Detector Preamplifier |
|---|---|
Use Scenario: Amplifying mV-level Wheatstone bridge outputs from load cells or pressure sensors in industrial weighing systems. IC Role / Device Role / Timing Role: Primary signal-conditioning amplifier with precision offset nulling and 0.02% gain accuracy at DC–10Hz. Use Value: Enables sub-10µV resolution using 350Ω bridges biased at 5V, reducing self-heating drift versus conventional 10V excitation. | Use Scenario: Low-noise amplification of photocurrent from HgCdTe infrared detectors in spectroscopy analyzers. IC Role / Device Role / Timing Role: Transimpedance preamplifier with 392kΩ feedback resistor and 100µF AC coupling. Use Value: Achieves <60nVP-P (0.1–10Hz) input-referred noise, preserving weak IR signal integrity against thermal background. |
| Phono Preamplifier | Tape Head Amplifier |
Use Scenario: RIAA-equalized amplification of magnetic phono cartridge signals in high-fidelity audio equipment. IC Role / Device Role / Timing Role: First-stage gain block with 7.87kΩ input impedance and 0.01µF/0.033µF passive EQ network. Use Value: Delivers <0.0025% THD at 1kHz and 60MHz GBW to maintain phase linearity across 20Hz–20kHz band. | Use Scenario: Wideband amplification of analog tape playback head outputs in professional audio recorders. IC Role / Device Role / Timing Role: High-slew-rate gain stage with 4.99kΩ/316kΩ feedback network and 0.01µF coupling. Use Value: Supports 30kHz bandwidth with 11V/µs slew rate, eliminating slew-induced distortion on high-frequency transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1126CN8#PBF | Dual-channel, same decompensated architecture; 50MHz GBW, 8V/µs slew rate, 1.8nV/√Hz @ 1kHz. | Requires dual-amplifier topology; lower noise but reduced bandwidth vs LT1037CN8#PBF. | Select when space-constrained designs require two matched precision amps in one package. |
| OP27GPZ | Compensated (unity-gain stable); 8MHz GBW, 2.8V/µs slew rate, 3.5nV/√Hz @ 10Hz, 10µV max VOS. | Supports AVCL = 1; lower bandwidth limits high-gain accuracy above 1Hz. | Select for unity-gain buffers or where layout constraints prohibit minimum-gain configuration. |
Compared with LT1126CN8#PBF and OP27GPZ, the LT1037CN8#PBF uniquely balances 60MHz GBW, 11V/µs slew rate, and 4.5nV/√Hz noise - making it optimal for single-channel, high-closed-loop-gain (>5), low-distortion applications where decompensated stability is acceptable.
Availability
LT1037CN8#PBF is available at Aetrix Electronics and suitable for precision instrumentation, audio preamplification, and infrared sensing applications requiring stable component supply, long-term calibration validity, and legacy socket compatibility.
Supply support for LT1037CN8#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 acquired Linear Technology in 2017, inheriting its legacy of high-performance analog ICs for precision signal conditioning.
The LT1037 series was designed specifically for applications demanding ultralow noise, high DC accuracy, and wideband gain - targeting strain gauge interfaces, scientific instrumentation, and high-fidelity audio front-ends.
FAQ
What is the minimum stable closed-loop gain for LT1037CN8#PBF?
The LT1037CN8#PBF is decompensated and requires a minimum closed-loop gain of 5 for stability. Operating at AVCL < 5 risks oscillation due to insufficient phase margin; external compensation is not recommended as it degrades bandwidth and noise performance. This constraint is explicitly guaranteed in the datasheet's Absolute Maximum Ratings and Electrical Characteristics tables.
Can LT1037CN8#PBF replace OP-27 in existing designs?
Yes, LT1037CN8#PBF is pin-compatible with OP-27 and can be inserted directly into OP-27 sockets without PCB modification. However, because LT1037CN8#PBF is decompensated (min AVCL = 5) while OP-27 is unity-gain stable, existing AVCL = 1 circuits must be reconfigured to meet the gain requirement or risk instability. Verified socket compatibility is documented in the Applications Information section.
What is the guaranteed input voltage noise specification for LT1037CN8#PBF at 1kHz?
The LT1037CN8#PBF is guaranteed to deliver ≤3.8nV/√Hz input voltage noise at 1kHz, as specified in the Electrical Characteristics table under "Input Noise Voltage Density" for LT1037C/I/M grades. This value is tested on a sample basis per lot and correlates strongly with the 0.1Hz–10Hz peak-to-peak noise performance (60nVP-P typical).
Does LT1037CN8#PBF support rail-to-rail input or output?
No, LT1037CN8#PBF does not support rail-to-rail input or output. Its input common-mode range is ±11.0V (with ±15V supplies), and output swing is ±12.5V into 2kΩ - leaving ≥2.5V headroom from each rail. This limitation is inherent to its bipolar input stage and Class AB output architecture, as confirmed by the "Maximum Output Voltage Swing" and "Input Voltage Range" specifications.
How is offset voltage adjusted on LT1037CN8#PBF?
Offset voltage on LT1037CN8#PBF is adjusted using pins 1 and 8 (VOS Trim) connected to a 10kΩ potentiometer wiper, with each end tied to V+ and V–. This configuration provides ±2.5mV adjustment range without degrading the 0.6µV/°C max drift spec, as detailed in Figure 1 of the Applications Information section. Trimming beyond zero introduces predictable drift: (VOS/300) µV/°C.
LT1037CN8#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:
- 15V/µs
- Gain Bandwidth Product:
- 60 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 15 nA
- Voltage - Input Offset:
- 20 µV
- Current - Supply:
- -
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 8 V
- Voltage - Supply Span (Max):
- 44 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
LT1037CN8#PBF FAQ
1.How can I place an order for LT1037CN8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1037CN8#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 LT1037CN8#PBF reliable?
The price and inventory of LT1037CN8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1037CN8#PBF is usually 5 days.
3.What payment methods are accepted for LT1037CN8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1037CN8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1037CN8#PBF?
LT1037CN8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1037CN8#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 LT1037CN8#PBF?
For technical support, including LT1037CN8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1037CN8#PBF requirements.
6.How does Aetrix verify that LT1037CN8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1037CN8#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 LT1037CN8#PBF meets industry standards.
7.What is the process for return or replacement of LT1037CN8#PBF?
All LT1037CN8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1037CN8#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 LT1037CN8#PBF part is unused and in its original packaging.
Return procedure for LT1037CN8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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