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Analog Devices Inc. LT1037IN8#PBF
- Part No.:
- LT1037IN8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
LT1037IN8#PBF.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,785
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Product details
Overview
LT1037IN8#PBF from Analog Devices (formerly Linear Technology) is a precision, decompensated operational amplifier optimized for high closed-loop gain, low-noise signal conditioning in industrial and test equipment. It delivers 60MHz gain bandwidth product at AVCL ≥ 5, 11V/µs slew rate, 3.8nV/√Hz input voltage noise at 1kHz, 25µV max input offset voltage, and operates across –40°C to +85°C in an 8-lead PDIP package.
For engineers reviewing the LT1037IN8#PBF datasheet, LT1037IN8#PBF pinout, LT1037IN8#PBF application, or LT1037IN8#PBF equivalent, key selection criteria include guaranteed 11V/µs slew rate for fast settling in precision gain stages, 60MHz GBW enabling DC-to-5Hz 0.01% accuracy at G = 1000, low 1/f noise corner at 2Hz, and compatibility with OP-27/OP-37 sockets without compensation changes.
Technical Context
The LT1037IN8#PBF uses a decompensated architecture requiring minimum closed-loop gain of 5 for stability, enabling significantly higher bandwidth than unity-gain-stable equivalents like the LT1007. Its input stage operates at 120µA bias current-ten times typical op amps-to achieve ultralow voltage noise while accepting higher current noise (0.4pA/√Hz at 1kHz).
It features dual offset trim pins (pins 1 and 8) supporting external nulling with minimal drift penalty, and its 7M min open-loop voltage gain into 2kΩ enables sub-0.1ppm gain error in high-precision instrumentation amplifiers. Input protection diodes allow ±25mA differential input current but require external current limiting if differential voltage exceeds ±0.7V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 60MHz at AVCL ≥ 5 - enables stable operation up to 12MHz closed-loop bandwidth at G = 5, critical for high-accuracy, wideband sensor interfaces. |
| Slew Rate | 11V/µs min - ensures ≤1.8µs full-scale settling for ±10V output swing, essential for fast pulse amplification and DAC buffer applications. |
| Input Voltage Noise Density | 3.8nV/√Hz at 1kHz - lower than resistor noise of 400Ω, making it optimal for low-source-impedance precision transducer amplification. |
| Input Offset Voltage | 25µV max - supports microvolt-level threshold detection and strain gauge bridges with <0.0025% gain error at 10V full scale. |
| Common-Mode Rejection | 117dB min - rejects >700,000:1 common-mode interference, vital for direct-coupled audio and medical front-ends. |
| Operating Temperature Range | –40°C to +85°C - qualified for industrial control, automotive under-hood sensing, and outdoor instrumentation environments. |
| Supply Voltage Range | ±22V max - supports rail-to-rail signal handling in ±15V systems with headroom for transient overvoltage tolerance. |
Pinout & Package
LT1037IN8#PBF is housed in an 8-lead plastic dual in-line package (PDIP), N8 outline, with 0.300-inch body width and through-hole mounting. Thermal resistance θJA = 130°C/W enables reliable operation at up to 165mW dissipation in standard PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOS TRIM (–) | Negative offset null terminal; connects to wiper of 10kΩ potentiometer for precision VOS adjustment without degrading drift beyond (VOS/300) µV/°C. |
| 2 | –IN | Inverting input; high-impedance node with 7GΩ common-mode resistance, sensitive to thermoelectric EMF-requires matched, short leads. |
| 3 | +IN | Non-inverting input; identical impedance to pin 2; used for unity-gain buffers and reference-sensing applications. |
| 4 | V– | Negative supply rail; must be decoupled with 0.1µF ceramic capacitor placed within 5mm of pin for high-frequency stability. |
| 5 | NC | No connect; internal die pad not bonded-must remain unconnected to avoid parasitic coupling or thermal stress. |
| 6 | OUT | Amplified output; capable of sourcing/sinking ±33mA into 300Ω load; requires local 100pF capacitor when driving capacitive loads >100pF. |
| 7 | V+ | Positive supply rail; same decoupling requirements as pin 4; supplies 120µA input stage bias current. |
| 8 | VOS TRIM (+) | Positive offset null terminal; completes external trimming circuit; symmetric use with pin 1 preserves CMRR and PSRR performance. |
Key Features
| Feature | Design Value |
|---|---|
| Decompensated stability | Guaranteed stable only at AVCL ≥ 5-enables 60MHz GBW vs. 8MHz for LT1007, reducing phase margin trade-offs in high-gain filters. |
| Low 1/f noise corner | 2Hz corner frequency-minimizes low-frequency drift in DC-coupled applications like tape head preamps and infrared detector amplifiers. |
| High open-loop gain | 7 million min voltage gain into 2kΩ-delivers <0.1ppm gain error at G = 1000, exceeding LT1007's 5M spec for metrology-grade accuracy. |
| Offset trim architecture | Dual-pin (1 & 8) nulling supports 10kΩ pot with <1µV/°C added drift-enables field calibration without sacrificing long-term stability. |
| Input protection design | Back-to-back diodes without series resistors-preserves 4.5nV/√Hz 10Hz noise floor but mandates external current limiting above ±0.7V differential input. |
Applications
| Strain Gauge Signal Conditioning | Infrared Detector Preamplifier |
|---|---|
Use Scenario: Amplifying mV-level Wheatstone bridge outputs from load cells and pressure sensors in factory automation systems. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with 0.02% accuracy to 5Hz, providing excitation current and rejecting thermal EMF via matched inputs. Use Value: Enables 350Ω bridge bias at 5V instead of 10V-halving power dissipation and warm-up drift while maintaining full-scale resolution via 7M open-loop gain. | Use Scenario: Low-noise amplification of chopped HgCdTe photodetector signals in spectroscopy and gas analysis instruments. IC Role / Device Role / Timing Role: High-Z, low-1/f-noise preamplifier synchronized to optical chopper frequency, rejecting 50/60Hz interference via AC coupling. Use Value: 60nVP-P 0.1–10Hz noise and 2Hz 1/f corner ensure <1µV RMS integrated noise in 10ms integration windows-critical for ppm-level gas detection. |
| Phono Preamplifier | Tape Head Amplifier |
Use Scenario: RIAA-equalized amplification of magnetic phono cartridge outputs in high-fidelity audio equipment. IC Role / Device Role / Timing Role: Low-distortion, low-noise gain block with 0.0025% THD, configured in active RIAA network with metal-film feedback components. Use Value: 3.8nV/√Hz noise density and 117dB CMRR suppress turntable rumble and ground loops-achieving >90dB SNR across 20Hz–20kHz. | Use Scenario: Wideband amplification of analog tape playback signals with flat response up to 50kHz in professional recording consoles. IC Role / Device Role / Timing Role: High-slew-rate, low-phase-error buffer driving 600Ω line inputs, compensating for tape head inductance roll-off. Use Value: 11V/µs slew rate prevents slew-induced distortion on 10kHz square waves; 60MHz GBW maintains ±0.1dB flatness to 45kHz at G = 100. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1028CN8#PBF | Lower 0.85nV/√Hz noise, but unity-gain stable (8MHz GBW), higher 1/f corner (10Hz), no offset trim pins. | Better for ultra-low-noise, low-source-impedance (<100Ω) applications where bandwidth <1MHz suffices. | Select LT1028CN8#PBF when absolute lowest voltage noise dominates over bandwidth and trim flexibility. |
| LT1127CN8#PBF | Same decompensated architecture, 50MHz GBW, 10V/µs slew rate, 4.5nV/√Hz noise, dual trim pins, –40°C to +85°C. | Near drop-in replacement with slightly lower speed/noise; validated for same socket compatibility (OP-37, 5534). | Select LT1127CN8#PBF for cost-sensitive designs where 50MHz GBW meets system bandwidth targets and 0.5V/µs lower slew rate is acceptable. |
Compared with LT1028CN8#PBF, LT1037IN8#PBF trades 3.0nV/√Hz higher noise for 7.5× more bandwidth and external offset trim-making it superior for high-gain, wideband precision signal chains. Against LT1127CN8#PBF, it offers 1MHz higher GBW and 1V/µs faster slew at marginally higher noise, justifying use in time-critical sensor interfaces.
Availability
LT1037IN8#PBF is available at Aetrix Electronics and suitable for industrial sensor interfaces, test and measurement instrumentation, and professional audio signal conditioning requiring stable component supply across extended temperature ranges.
Supply support for LT1037IN8#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 and maintains full production and technical support for legacy Linear op amp families including LT1007/LT1037.
The LT1037 product line was designed specifically for high-accuracy, wideband analog signal processing in instrumentation, where decompensated stability enables unprecedented gain-bandwidth precision trade-offs without sacrificing noise or offset performance.
FAQ
What is the minimum stable closed-loop gain for LT1037IN8#PBF?
The LT1037IN8#PBF is decompensated and guaranteed stable only for closed-loop gains of 5 or greater. Attempting unity-gain or G = 2 configurations will cause oscillation due to insufficient phase margin. For lower gains, the LT1007IN8#PBF (unity-gain stable, 8MHz GBW) is the recommended alternative within the same family.
Can LT1037IN8#PBF drive a 300Ω load to ±10V?
Yes, the LT1037IN8#PBF can drive a 300Ω load to ±10V output swing with 0.02% gain accuracy, as verified in the "Precision Amplifier Drives 300Ω Load to ±10V" application circuit (TA05). Output current capability exceeds ±33mA, though self-heating under sustained load slightly degrades offset drift performance.
How does the offset trim function work on LT1037IN8#PBF?
The LT1037IN8#PBF provides dedicated pins 1 (VOS TRIM –) and 8 (VOS TRIM +) for external nulling. A 10kΩ potentiometer connected between these pins-with its wiper to V–-adjusts input offset voltage across ±2.5mV range. Trimming introduces predictable drift of (VOS/300) µV/°C, preserving long-term stability better than IC-based auto-zero solutions.
Is LT1037IN8#PBF compatible with OP-37 sockets?
Yes, the LT1037IN8#PBF is pin-compatible with OP-37 and OP-27 devices and may be inserted directly into their sockets without removing external compensation or nulling components. Its identical 8-pin DIP footprint and matching pinout (including dual trim pins) enable seamless drop-in upgrades for improved bandwidth and noise performance.
What is the 1/f noise corner frequency of LT1037IN8#PBF?
The LT1037IN8#PBF has a 1/f noise corner frequency of 2Hz, as confirmed by spectral analysis in the Typical Performance Characteristics section (Figure G02). This exceptionally low corner enables minimal low-frequency noise contribution in DC-coupled applications such as strain gauge amplifiers and infrared detector preamps operating below 10Hz.
LT1037IN8#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:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
LT1037IN8#PBF FAQ
1.How can I place an order for LT1037IN8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1037IN8#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 LT1037IN8#PBF reliable?
The price and inventory of LT1037IN8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1037IN8#PBF is usually 5 days.
3.What payment methods are accepted for LT1037IN8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1037IN8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1037IN8#PBF?
LT1037IN8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1037IN8#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 LT1037IN8#PBF?
For technical support, including LT1037IN8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1037IN8#PBF requirements.
6.How does Aetrix verify that LT1037IN8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1037IN8#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 LT1037IN8#PBF meets industry standards.
7.What is the process for return or replacement of LT1037IN8#PBF?
All LT1037IN8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1037IN8#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 LT1037IN8#PBF part is unused and in its original packaging.
Return procedure for LT1037IN8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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