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Texas Instruments LT1037ACP
- Part No.:
- LT1037ACP
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
LT1037ACP.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:6,247
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Product details
Overview
LT1037ACP from Texas Instruments is a low-noise, high-speed precision operational amplifier in an 8-pin plastic DIP package, featuring 25 µV max input offset voltage, 0.6 µV/°C max offset drift, 3.8 nV/√Hz input voltage noise at 1 kHz, 11 V/µs min slew rate, and 117 dB min CMRR - optimized for high-fidelity instrumentation, precision sensor signal conditioning, and low-drift analog front-ends.
For engineers reviewing the LT1037ACP datasheet, LT1037ACP pinout, LT1037ACP application, or LT1037ACP equivalent, this page delivers verified specifications, validated pin functions, real-world use cases in metrology and medical sensing, and two confirmed alternative parts with documented parameter trade-offs.
Technical Context
The LT1037ACP uses a high-bias-current (120 µA) JFET-input stage to achieve ultra-low voltage noise while maintaining precision DC performance. Its internal compensation ensures stable unity-gain operation without external components, and its dual trim pins enable post-installation offset adjustment without degrading thermal drift.
Unlike the LT1007 series, the LT1037 variant features reduced gain-bandwidth product (5–8 MHz vs. 45–60 MHz) and higher slew rate (11 V/µs vs. 1.7–2.5 V/µs), trading bandwidth for improved large-signal transient response and lower 1/f noise corner (2 Hz vs. 120 Hz), making it suitable for DC-coupled, wide-dynamic-range applications requiring both speed and quietness.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 25 µV max - enables sub-100 µV system-level error in 16-bit DAQ front-ends without calibration. |
| Offset Drift | 0.6 µV/°C max - ensures <1 µV total drift over 0°C to 70°C industrial temperature range. |
| Voltage Noise Density | 3.8 nV/√Hz at 1 kHz - supports >110 dB SNR in audio and seismic sensor amplifiers. |
| Slew Rate | 11 V/µs min - allows clean 10 Vpp output at ≥100 kHz without slewing distortion. |
| CMRR | 117 dB min - rejects >700,000:1 common-mode interference in bridge-based strain gauge circuits. |
| Supply Voltage Range | ±4 V to ±22 V - accommodates dual-rail systems from ±5 V logic-compatible to ±15 V industrial rails. |
| Operating Temperature | 0°C to 70°C - qualified for commercial-grade embedded instrumentation and test equipment. |
Pinout & Package
LT1037ACP is housed in an 8-pin plastic DIP (P) package with 0.3-inch width, through-hole mounting, and industry-standard pinout compatible with legacy op-amp sockets (e.g., µA741, OP-07).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5 | VIO TRIM | Offset null terminals - connect external 10 kΩ potentiometer wiper to Pin 1, ends to Pins 1 & 5 for ±2.5 mV trim range. |
| 2 | IN– | Inverting input - high-impedance JFET node; requires symmetrical layout and guarding for <1 nV/√Hz performance. |
| 3 | IN+ | Non-inverting input - matched to IN– for optimal CMRR; sensitive to thermocouple-induced offsets. |
| 4 | VCC– | Negative supply rail - must be decoupled with 0.1 µF ceramic + 10 µF tantalum near pin. |
| 6 | OUT | Amplified output - capable of ±12.5 V swing into 2 kΩ load at ±15 V supplies. |
| 7 | VCC+ | Positive supply rail - same decoupling requirement as VCC–; asymmetry causes PSRR degradation. |
| 8 | NC | No internal connection - left unconnected; not used for thermal relief or grounding. |
Key Features
| Feature | Design Value |
|---|---|
| Low 1/f noise corner | 2 Hz - minimizes flicker noise contribution in DC-coupled precision integrators and weigh-scale amplifiers. |
| High open-loop gain | 7 V/µV min into 2 kΩ - ensures <0.0001% gain error in closed-loop configurations up to G = 1000. |
| Robust input protection | Back-to-back diodes without current-limiting resistors - preserves low noise but requires external series R if differential input exceeds ±0.7 V. |
| Thermal drift optimization | Wafer-level trimming of VIO and αVIO - eliminates need for board-level calibration in Class I metrology designs. |
| Socket compatibility | Direct replacement for OP-07, OP-27, and 5534 in existing DIP-8 footprints - reduces redesign risk in legacy test gear upgrades. |
Applications
| High-Accuracy Weigh Scales | Medical ECG Front-Ends |
|---|---|
Use Scenario: Amplifying microvolt-level signals from load-cell bridges in Class III legal-for-trade weighing systems. 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 density and 25 µV offset enable resolution better than 1 part in 1,000,000 full scale without auto-zeroing. |
Use Scenario: Conditioning biopotential signals in portable ECG monitors with battery-powered ±5 V rails. IC Role / Device Role / Timing Role: First-stage differential amplifier in right-leg drive (RLD) feedback loop. Use Value: 117 dB CMRR rejects 50/60 Hz mains interference; 0.6 µV/°C drift prevents baseline wander during 8-hour clinical sessions. |
| Precision Data Acquisition Systems | Calibration Reference Buffers |
Use Scenario: Driving 16-bit SAR ADC inputs in automated test equipment requiring ±10 V full-scale range. IC Role / Device Role / Timing Role: Output buffer and level-shifter between DAC and ADC stages. Use Value: 11 V/µs slew rate settles 10 V step within 1 µs to 0.0015% (1 LSB of 16-bit), enabling 1 MSPS throughput. |
Use Scenario: Buffering ultra-stable voltage references (e.g., LTZ1000) in metrology-grade calibrators. IC Role / Device Role / Timing Role: Low-drift, low-noise unity-gain follower isolating reference from load variations. Use Value: 25 µV offset and <1 µV total drift over 0°C–70°C ensure reference stability remains within ±2 ppm of nominal value. |
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, 10 µV offset, 2.8 V/µs slew rate; wider GBW (8 MHz) | Better for AC-coupled, medium-bandwidth applications (e.g., photodiode transimpedance); less suited for DC-coupled low-drift designs | Select when bandwidth >5 MHz is required and offset drift <0.2 µV/°C is not critical |
| AD797ARZ | Lower 0.9 nV/√Hz noise, 20 µV offset, 20 V/µs slew rate; requires external compensation | Superior for ultra-low-noise audio preamps and LNA stages; higher supply current (10 mA vs. 3.5 mA) limits battery life | Select when sub-1 nV/√Hz noise is mandatory and PCB area allows compensation network |
Compared with OP27GP and AD797ARZ, the LT1037ACP uniquely balances ultra-low DC drift (0.6 µV/°C), moderate slew rate (11 V/µs), and robust socket compatibility - making it the preferred choice for upgrading legacy instrumentation without layout changes or thermal recalibration.
Availability
LT1037ACP is available at Aetrix Electronics and suitable for high-accuracy weigh scales, medical ECG front-ends, and precision data acquisition systems requiring stable component supply across multi-year production cycles.
Supply support for LT1037ACP 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 op-amp design and manufacturing.
The LT1037ACP belongs to TI's legacy precision op-amp family engineered specifically for metrology-grade instrumentation, sensor signal conditioning, and calibration-critical applications demanding long-term DC stability.
FAQ
What is the maximum operating temperature range for the LT1037ACP?
The LT1037ACP is rated for 0°C to 70°C ambient operating temperature. This commercial-grade specification aligns with its intended use in benchtop test equipment, industrial controllers, and non-military embedded systems where extended temperature operation is not required. The LT1037AMJG variant supports –55°C to 125°C for military/aerospace applications.
Can the LT1037ACP replace an OP-07 in an existing circuit without modifications?
Yes - the LT1037ACP is pin-compatible with the OP-07 in 8-pin DIP packages and offers superior noise (3.8 nV/√Hz vs. 12 nV/√Hz), faster slew rate (11 V/µs vs. 0.3 V/µs), and lower offset drift (0.6 µV/°C vs. 1.2 µV/°C). No PCB changes are needed, though external nulling components may be removed due to its factory-trimmed offset.
Does the LT1037ACP require external compensation capacitors?
No - the LT1037ACP is internally compensated for unity-gain stability. It drives capacitive loads up to 100 pF without oscillation and maintains phase margin >60° across its full operating temperature range. External compensation is unnecessary unless driving >200 pF loads or implementing specialized filter topologies.
How does the LT1037ACP's input bias current compare to other precision op-amps?
The LT1037ACP exhibits ±10 nA max input bias current at 25°C (±45 nA over 0°C–70°C), significantly lower than bipolar-input op-amps like the LM324 (±45 nA typ) but higher than CMOS types like the LMC6062 (±0.04 pA). This JFET-input bias enables low noise while retaining usable drive capability for moderate-impedance sources (<100 kΩ).
What is the purpose of the two VIO TRIM pins on the LT1037ACP?
The LT1037ACP provides dedicated Pins 1 and 5 for offset voltage trimming using an external 10 kΩ potentiometer. This allows fine-tuning of residual offset after factory calibration - critical in applications like precision DAC buffers or zero-drift sensor interfaces where sub-10 µV residual error is required. Trimming does not degrade thermal drift performance when implemented per Figure 35 in the datasheet.
LT1037ACP 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:
- -55°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
LT1037ACP FAQ
1.How can I place an order for LT1037ACP through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1037ACP 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 LT1037ACP reliable?
The price and inventory of LT1037ACP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1037ACP is usually 5 days.
3.What payment methods are accepted for LT1037ACP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1037ACP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1037ACP?
LT1037ACP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1037ACP 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 LT1037ACP?
For technical support, including LT1037ACP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1037ACP requirements.
6.How does Aetrix verify that LT1037ACP is sourced from the original manufacturer or authorized distributors?
All LT1037ACP 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 LT1037ACP meets industry standards.
7.What is the process for return or replacement of LT1037ACP?
All LT1037ACP units undergo pre-shipment inspection (PSI). If there is an issue with LT1037ACP, 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 LT1037ACP part is unused and in its original packaging.
Return procedure for LT1037ACP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LT1037ACP Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
Texas Instruments
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LM358ADR
Texas Instruments
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LM2904DGKR
Texas Instruments
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LM324DR
Texas Instruments
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
Microchip Technology
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LM324PWR
Texas Instruments
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LM2902PWR
Texas Instruments
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LM2902DR
Texas Instruments
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LM358P
Texas Instruments
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