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Analog Devices Inc. LT1037CS8#PBF
- Part No.:
- LT1037CS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1037CS8#PBF.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,309
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Product details
Overview
LT1037CS8#PBF from Analog Devices (formerly Linear Technology) is a decompensated, high-speed, low-noise precision operational amplifier in an 8-lead plastic SOIC package. It delivers 60MHz gain bandwidth, 11V/µs slew rate, 3.8nV/√Hz input voltage noise at 1kHz, 25µV max input offset voltage, and 117dB min CMRR - optimized for high-gain, low-distortion audio preamplifiers and strain gauge signal conditioning.
For engineers reviewing the LT1037CS8#PBF datasheet, LT1037CS8#PBF pinout, LT1037CS8#PBF application, or LT1037CS8#PBF equivalent, key selection criteria include guaranteed 11V/µs slew rate at AVCL ≥ 5, 0.1Hz–10Hz noise of 60nVP-P, ±12.5V output swing into 2kΩ, and compatibility with OP-27/OP-37 sockets without external compensation.
Technical Context
The LT1037CS8#PBF uses a decompensated architecture requiring closed-loop gains ≥ 5 for stability, enabling its 60MHz gain bandwidth product - double that of compensated precision op amps like the LT1007. Its input stage operates at 120µA to minimize voltage noise while accepting higher current noise (0.6pA/√Hz at 1kHz), making it optimal for source impedances below 50kΩ.
It features dual offset trim pins (pins 1 and 8), enabling precise nulling without degrading drift performance. The device maintains 117dB min CMRR and 106dB min PSRR across ±4.5V to ±18V supplies, supporting precision DC-coupled instrumentation where common-mode rejection and supply immunity are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 60MHz at AVCL ≥ 5 - enables stable high-frequency amplification in gain-of-5+ configurations. |
| Slew Rate | 11V/µs minimum - supports fast transient response in audio and pulse-amplification stages. |
| Input Voltage Noise | 3.8nV/√Hz at 1kHz - lower than most precision op amps, critical for microvolt-level signal integrity. |
| Input Offset Voltage | 25µV maximum - ensures sub-0.01% DC error in 1000× gain precision amplifiers. |
| CMRR | 117dB minimum - rejects >700,000:1 common-mode interference in bridge sensor interfaces. |
| Output Swing | ±12.5V into 2kΩ - delivers full dynamic range with ±15V supplies in industrial analog front-ends. |
| Supply Voltage Range | ±22V absolute max - accommodates overvoltage transients in ruggedized measurement systems. |
Pinout & Package
LT1037CS8#PBF is housed in an 8-lead plastic small-outline integrated circuit (SOIC) package (S8), 0.150-inch body width, with standard JEDEC MS-012AC footprint and gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOS TRIM (−) | Connects to wiper of 10kΩ potentiometer for offset nulling; adjusts VOS downward when voltage at pin 1 < pin 8. |
| 2 | −IN | Inverting input terminal; high-impedance node for feedback networks and differential sensing. |
| 3 | +IN | Non-inverting input terminal; accepts high-impedance sensor signals or reference voltages. |
| 4 | V− | Negative supply rail connection; must be decoupled locally to minimize noise coupling. |
| 5 | NC | No internal connection; left unconnected per datasheet - no routing or grounding required. |
| 6 | OUT | Amplified output node; capable of sourcing/sinking ±33mA into 300Ω loads with minimal distortion. |
| 7 | V+ | Positive supply rail connection; requires local 0.1µF ceramic bypass capacitor. |
| 8 | VOS TRIM (+) | Connects to one end of 10kΩ potentiometer; adjusts VOS upward when voltage at pin 8 > pin 1. |
Key Features
| Feature | Design Value |
|---|---|
| Decompensated Stability | Stable only at closed-loop gains ≥ 5 - enables 60MHz GBW while avoiding external compensation components. |
| Dual Trim Pins | Pins 1 and 8 support 10kΩ potentiometer for offset nulling without increasing temperature drift beyond 0.6µV/°C. |
| Low 1/f Noise Corner | 2Hz corner frequency - minimizes low-frequency noise impact in DC-coupled applications like strain gauge amplifiers. |
| High Open-Loop Gain | 20 million V/V into 2kΩ - ensures <0.01% gain error up to 5Hz in G = 1000 configurations. |
| Robust Input Protection | Back-to-back diodes on inputs - allows ±25mA differential input current without damage, but requires external current limiting above ±0.7V. |
Applications
| Audio Preamplifier | Strain Gauge Amplifier |
|---|---|
Use Scenario: Low-noise amplification of microphone or phono cartridge signals with gain ≥ 1000 and THD < 0.0025%. IC Role / Device Role / Timing Role: Primary gain stage in DC-coupled audio path, leveraging 3.8nV/√Hz noise and 60MHz bandwidth for wideband fidelity. Use Value: Enables 1kHz sine wave generation with <0.0025% THD and <0.0001% noise floor - verified in LTC reference design TA01. | Use Scenario: Signal conditioning of Wheatstone bridge outputs from load cells or pressure sensors with mV-level excitation. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end, providing bridge excitation and first-stage gain with <25µV offset error. Use Value: Delivers 0.02% gain accuracy DC to 5Hz in G = 1000 configuration - outperforming typical precision op amps by 200× in gain-bandwidth precision. |
| Infrared Detector Interface | Tape Head Amplifier |
Use Scenario: Preamplification of low-current, high-impedance photoconductive HgCdTe infrared detectors operating at 77K. IC Role / Device Role / Timing Role: Transimpedance amplifier with 392kΩ feedback resistor, exploiting low input bias current (±15nA max) and low 1/f noise. Use Value: Maintains signal integrity in chopped IR detection systems with synchronous demodulation - validated in TA08 reference circuit. | Use Scenario: High-fidelity amplification of magnetic tape head signals requiring flat frequency response from 30Hz to 20kHz. IC Role / Device Role / Timing Role: Low-distortion, low-noise gain block with metal-film passive network, using LT1037's 11V/µs slew rate to avoid slew-induced distortion. Use Value: Supports tape playback with <0.0025% THD and 60nVP-P 0.1–10Hz noise - referenced in TA07 schematic and performance data. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1127CS8#PBF | Same decompensated architecture, 50MHz GBW, 7.5V/µs slew rate, 1.8nV/√Hz at 1kHz - lower noise but reduced speed. | Better for ultra-low-noise DC applications (<10Hz dominant); less suitable for >10kHz audio or fast pulse amplification. | Select LT1127CS8#PBF when 1.8nV/√Hz noise outweighs need for 60MHz bandwidth and 11V/µs slew rate. |
| OPA211IDR | Unity-gain stable, 45MHz GBW, 27V/µs slew rate, 1.1nV/√Hz at 1kHz - lower noise, higher speed, but requires different compensation strategy. | Supports gain-of-1 configurations; better for wideband unity-gain buffers or active filters where decompensation is undesirable. | Choose OPA211IDR when unity-gain stability, lower noise, and higher slew rate are mandatory - not a drop-in replacement due to different compensation and pinout. |
Compared with LT1127CS8#PBF and OPA211IDR, the LT1037CS8#PBF uniquely balances 60MHz bandwidth, 11V/µs slew rate, and 3.8nV/√Hz noise in a decompensated SOIC package - making it optimal for fixed-gain ≥5 precision amplifiers where speed-noise trade-off favors bandwidth over ultra-low-noise operation.
Availability
LT1037CS8#PBF is available at Aetrix Electronics and suitable for precision audio preamplifiers, strain gauge signal conditioners, and infrared detector interfaces requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LT1037CS8#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 continues to manufacture and support its precision analog portfolio, including legacy op amp families renowned for low noise and high DC accuracy.
The LT1037 series was designed specifically for high-gain, high-bandwidth precision applications - such as audio preamps, sensor signal chains, and test equipment - where decompensated speed and ultra-low voltage noise are essential.
FAQ
What is the minimum stable closed-loop gain for LT1037CS8#PBF?
The LT1037CS8#PBF is decompensated and requires a minimum closed-loop gain of 5 for stability. Attempting unity-gain or gain-of-2 configurations will cause oscillation. This design enables its 60MHz gain bandwidth product - a key differentiator versus compensated op amps like the LT1007. Always verify phase margin with capacitive loads in your specific layout.
Can LT1037CS8#PBF replace OP-27 or OP-37 in existing designs?
Yes, the LT1037CS8#PBF can directly replace OP-27 and OP-37 in socketed designs without removing external compensation or nulling components. Its pinout matches DIP-8 and SO-8 footprints, and its offset trim pins (1 and 8) align functionally. However, confirm that the host circuit operates at gain ≥ 5 - unlike the OP-27/OP-37, the LT1037CS8#PBF is not unity-gain stable.
What is the purpose of pins 1 and 8 on LT1037CS8#PBF?
Pins 1 and 8 on the LT1037CS8#PBF are dedicated offset voltage trim terminals. Connecting a 10kΩ potentiometer between them (wiper to pin 1 or 8) allows precise nulling of input offset voltage without degrading temperature drift beyond 0.6µV/°C. This dual-pin architecture avoids introducing thermoelectric errors common in single-pot configurations - a feature confirmed in the LT1037 datasheet Figure 1.
How does LT1037CS8#PBF perform in low-frequency noise-sensitive applications?
The LT1037CS8#PBF delivers 60nVP-P typical 0.1Hz–10Hz noise and a 2Hz 1/f corner - among the lowest for monolithic precision op amps. Its low corner frequency ensures minimal low-frequency drift in DC-coupled strain gauge or infrared detector amplifiers. For best results, warm up the device ≥5 minutes and shield from air currents, as specified in the noise test methodology (Figure 5a).
Is LT1037CS8#PBF suitable for driving 300Ω loads?
Yes, the LT1037CS8#PBF can drive 300Ω loads to ±10V with 0.02% gain accuracy, as demonstrated in reference design TA05. When paired with an LT1007 buffer, output current capability extends to ±33mA. Ensure adequate PCB copper area and thermal vias - power dissipation reaches 140mW under full load - and verify stability with 15pF–100pF capacitive loading per the transient response curves (G28–G29).
LT1037CS8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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:
- Surface Mount
- Supplier Device Package:
- 8-SO
LT1037CS8#PBF FAQ
1.How can I place an order for LT1037CS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1037CS8#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 LT1037CS8#PBF reliable?
The price and inventory of LT1037CS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1037CS8#PBF is usually 5 days.
3.What payment methods are accepted for LT1037CS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1037CS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1037CS8#PBF?
LT1037CS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1037CS8#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 LT1037CS8#PBF?
For technical support, including LT1037CS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1037CS8#PBF requirements.
6.How does Aetrix verify that LT1037CS8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1037CS8#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 LT1037CS8#PBF meets industry standards.
7.What is the process for return or replacement of LT1037CS8#PBF?
All LT1037CS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1037CS8#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 LT1037CS8#PBF part is unused and in its original packaging.
Return procedure for LT1037CS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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