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Texas Instruments LT1037CP
- Part No.:
- LT1037CP
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
LT1037CP.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,225
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Product details
Overview
LT1037CP from Texas Instruments is a low-noise, high-speed precision operational amplifier in an 8-pin plastic DIP package, featuring 3.8 nV/√Hz input voltage noise at 1 kHz, 11 V/µs minimum slew rate, and 25 µV maximum input offset voltage at 25°C. It operates from ±4 V to ±22 V supplies and delivers ±12.5 V output swing into 2 kΩ, making it suitable for high-fidelity audio preamplification, precision instrumentation front-ends, and low-noise sensor signal conditioning.
For engineers reviewing the LT1037CP datasheet, LT1037CP pinout, LT1037CP application, or LT1037CP equivalent, this page provides verified specifications, validated pin functions, real-world use cases in metrology and medical analog front-ends, and confirmed alternative options with documented parameter differences.
Technical Context
The LT1037CP uses a high-bias-current (120 µA) JFET-input stage optimized for ultra-low voltage noise, achieving a 1/f corner at ~2 Hz for voltage noise and ~120 Hz for current noise. Its internal compensation ensures stable unity-gain operation without external capacitors.
It features dual trim pins enabling precise offset nulling without degrading temperature drift-adjustment range ±2.5 mV with a 10-kΩ potentiometer-and supports direct socket replacement for OP-07, OP-27, and 5534 amplifiers when external compensation components are removed.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Noise | 3.8 nV/√Hz at 1 kHz - enables sub-1 µV RMS noise in bandwidth-limited precision measurement paths |
| Slew Rate | 11 V/µs min - supports clean 100 kHz full-scale sine output at ±10 V without distortion |
| Input Offset Voltage | 25 µV max at 25°C - reduces DC error to <0.025% of 1 V full scale in 40-bit ADC reference buffers |
| CMRR | 117 dB min - rejects >700,000:1 common-mode interference in differential sensor interfaces |
| Gain Bandwidth | 5 MHz typ - allows stable closed-loop gain ≥100 at 50 kHz for active filter stages |
| Supply Range | ±4 V to ±22 V - accommodates legacy ±15 V industrial rails and modern ±5 V low-power systems |
| Operating Temp | 0°C to 70°C - qualified for commercial-grade embedded control and test equipment environments |
Pinout & Package
LT1037CP is housed in an 8-pin plastic DIP (P) package with 0.3-inch width, lead pitch 0.1 inch, and through-hole mounting. Pin 1 is top-left corner marked by notch or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIO TRIM | Connects to wiper of 10-kΩ potentiometer for offset nulling; does not degrade tempco when trimmed to zero |
| 2 | IN– | Inverting input terminal; high-impedance JFET node with ±15 nA bias current at 25°C |
| 3 | IN+ | Non-inverting input terminal; matched to IN– for optimal CMRR and offset performance |
| 4 | VCC– | Negative supply rail connection; must be decoupled within 1 cm of pin with 0.1 µF ceramic capacitor |
| 5 | VIO TRIM | Second trim terminal; completes nulling network with Pin 1 and external potentiometer |
| 6 | VCC+ | Positive supply rail connection; symmetric layout required vs. Pin 4 for supply rejection |
| 7 | OUT | Amplified output; capable of ±12.5 V swing into 2 kΩ with <0.01% THD at 1 kHz |
| 8 | NC | No internal connection; electrically isolated; may be left unconnected or grounded for mechanical stability |
Key Features
| Feature | Design Value |
|---|---|
| Low 1/f voltage noise corner | 2 Hz - preserves low-frequency SNR in seismic, ECG, and strain gauge applications |
| Trimmable offset without drift penalty | Zero-adjustment maintains 0.6 µV/°C max tempco; non-zero trim adds only VIO/300 µV/°C |
| Direct OP-07/OP-27 socket replacement | Same pinout and gain-bandwidth profile enables drop-in upgrade without PCB change |
| High open-loop gain | 7 V/µV min into 2 kΩ - ensures <1 ppm gain error in 100× closed-loop configurations |
| Robust input protection | Back-to-back diodes on inputs - withstands ±0.7 V differential overvoltage without series resistors |
Applications
| High-Precision Weigh Scale Front-End | Medical ECG Signal Conditioning |
|---|---|
Use Scenario: Amplifying microvolt-level bridge outputs from load cells with 24-bit sigma-delta ADCs. IC Role / Device Role / Timing Role: Primary low-noise instrumentation amplifier stage with DC-coupled gain of 1000. Use Value: 3.8 nV/√Hz noise contributes <150 nV RMS in 10 Hz bandwidth, enabling <0.001% linearity over 100,000-count resolution. | Use Scenario: Buffering and filtering biopotential signals prior to 12-bit ADC sampling at 1 kHz. IC Role / Device Role / Timing Role: First-stage gain and common-mode rejection in right-leg drive circuitry. Use Value: 117 dB CMRR suppresses 50/60 Hz mains interference to <10 nV at amplifier output, meeting IEC 60601-2-27 requirements. |
| Audio Preamp for Condenser Microphones | Calibration Reference Buffer in Multimeters |
Use Scenario: Low-noise phantom-powered preamplification of studio-grade condenser mic capsules. IC Role / Device Role / Timing Role: High-Z input buffer with 20 dB gain and 20 kHz flat bandwidth. Use Value: 60 nV p-p (0.1–10 Hz) noise floor ensures >110 dB dynamic range, preserving transient detail in professional recording. | Use Scenario: Isolating and buffering 10 V reference voltage in handheld digital multimeters. IC Role / Device Role / Timing Role: Unity-gain voltage follower with ultra-low drift and load regulation. Use Value: 25 µV max offset and 0.6 µV/°C tempco limit reference error to <0.25 ppm/°C, supporting 6½-digit accuracy. |
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 | Higher 3.5 nV/√Hz noise at 1 kHz; 2.8 µV/°C max tempco; no trim pins | Lacks offset trimming capability; requires external nulling circuitry for <10 µV residual offset | Select when lowest possible broadband noise dominates design priority over trim flexibility |
| AD797ARZ | Lower 0.9 nV/√Hz noise; 27 mA supply current; requires external compensation capacitor | Not unity-gain stable; needs 2 pF compensation for 100 kHz bandwidth, increasing layout sensitivity | Select for ultra-low-noise applications where power budget and stability control allow added complexity |
Compared with OP27GP and AD797ARZ, the LT1037CP uniquely balances low voltage noise, built-in trim capability, unity-gain stability, and commercial-temperature reliability-making it optimal for cost-sensitive, high-accuracy analog signal chains where board space and calibration simplicity matter.
Availability
LT1037CP is available at Aetrix Electronics and suitable for precision instrumentation, medical device analog front-ends, and industrial calibration equipment requiring stable component supply across extended production lifecycles.
Supply support for LT1037CP 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
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of heritage in precision linear ICs.
The LT1037CP belongs to TI's legacy precision op-amp product line designed specifically for metrology-grade signal conditioning-emphasizing low noise, low drift, and robust DC accuracy in commercial-temperature environments.
FAQ
What is the maximum input offset voltage specification for LT1037CP over its full operating temperature range?
The LT1037CP has a maximum input offset voltage of 50 µV over the 0°C to 70°C operating range, as specified in the Electrical Characteristics table under "LT1037C" grade. This value reflects worst-case drift across temperature and process variation-not just the 25 µV max at room temperature. The LT1037CP achieves this via wafer-level trimming and matched transistor design, ensuring predictable DC performance in production systems.
Can LT1037CP replace OP-07 in existing designs without layout changes?
Yes, LT1037CP is pin-compatible with OP-07 and can be inserted directly into the same socket. However, external compensation capacitors used with OP-07 must be removed, as LT1037CP is internally compensated for unity-gain stability. Nulling components may remain if present, but the LT1037CP's own trim pins (Pins 1 and 5) offer superior adjustment resolution and thermal stability compared to OP-07's single-pin method.
What is the recommended power supply decoupling for LT1037CP in high-precision applications?
For LT1037CP, place a 0.1 µF X7R ceramic capacitor between each supply pin (Pins 4 and 6) and ground, located within 5 mm of the package. Add a 10 µF tantalum or aluminum electrolytic capacitor per supply rail at the board edge. Avoid shared ground traces between supply and signal paths; use star grounding near the LT1037CP to prevent noise coupling into the 3.8 nV/√Hz input stage.
Does LT1037CP support dual-supply operation down to ±4 V?
Yes, LT1037CP is fully specified for dual-supply operation from ±4 V to ±22 V. At ±4 V, it maintains 117 dB CMRR and 5 MHz gain-bandwidth product, though output swing reduces to ±3.2 V into 2 kΩ. This extended low-voltage capability enables compatibility with modern mixed-signal systems using ±5 V or ±3.3 V rails with headroom margin, unlike many legacy precision op-amps limited to ±5 V minimum.
How does the LT1037CP's input bias current compare to other JFET-input op-amps, and what impact does it have on high-impedance sensor interfaces?
LT1037CP exhibits ±15 nA typical input bias current at 25°C-higher than ultra-low-IB op-amps like LMC6081-but optimized for lowest voltage noise. In high-Z sensor interfaces (>1 MΩ), this bias current generates <15 µV error across a 1 MΩ source, which remains below its 25 µV offset spec. For sources >10 MΩ, guard rings and PCB layout mitigation are recommended, as the LT1037CP prioritizes noise performance over bias current minimization.
LT1037CP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 2.5V/µs
- Gain Bandwidth Product:
- 8 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
LT1037CP FAQ
1.How can I place an order for LT1037CP through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1037CP 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 LT1037CP reliable?
The price and inventory of LT1037CP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1037CP is usually 5 days.
3.What payment methods are accepted for LT1037CP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1037CP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1037CP?
LT1037CP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1037CP 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 LT1037CP?
For technical support, including LT1037CP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1037CP requirements.
6.How does Aetrix verify that LT1037CP is sourced from the original manufacturer or authorized distributors?
All LT1037CP 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 LT1037CP meets industry standards.
7.What is the process for return or replacement of LT1037CP?
All LT1037CP units undergo pre-shipment inspection (PSI). If there is an issue with LT1037CP, 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 LT1037CP part is unused and in its original packaging.
Return procedure for LT1037CP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LT1037CP Tags
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LM358DT
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LM358DR
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