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Analog Devices Inc. LT1007CN8
- Part No.:
- LT1007CN8
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
LT1007CN8.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,605
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Product details
Overview
LT1007CN8 from Analog Devices (formerly Linear Technology) is a precision low-noise operational amplifier in an 8-lead PDIP package, delivering 4.5nV/√Hz input voltage noise at 10Hz, 25µV max input offset voltage, and 1.7V/µs min slew rate. It serves as a high-fidelity signal conditioner in strain gauge interfaces, microphone preamplifiers, and ultralow-noise sensor front-ends.
For engineers reviewing the LT1007CN8 datasheet, LT1007CN8 pinout, LT1007CN8 application, or LT1007CN8 equivalent, key selection criteria include guaranteed 0.6µV/°C max offset drift, 117dB min CMRR, 7 million min open-loop gain into 2kΩ, and compatibility with OP-07/OP-27 sockets without external compensation.
Technical Context
The LT1007CN8 employs a bipolar input stage biased at 120µA to achieve its 2.5nV/√Hz wideband noise floor-lower than a 400Ω resistor-and features a 2Hz 1/f corner frequency. Its architecture delivers 60nVP-P 0.1Hz–10Hz noise and maintains ≥117dB common-mode rejection across ±11V input range.
Unlike decompensated variants (e.g., LT1037), the LT1007CN8 is unity-gain stable with 8MHz gain-bandwidth product and supports closed-loop gains down to 1. It achieves 70Ω open-loop output resistance and operates over 0°C to 70°C with ±22V absolute max supply rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Noise Density | 4.5nV/√Hz @ 10Hz - enables sub-µV signal amplification in DC-coupled sensor paths |
| 0.1Hz–10Hz Noise | 60nVP-P typical - critical for precision DC measurements like microvolt threshold detection |
| Input Offset Voltage | 25µV max - ensures ≤0.25% gain error in 100× instrumentation amplifier configurations |
| Offset Drift | 0.6µV/°C max - limits thermal-induced error to <4.2µV over 70°C industrial temperature span |
| Open-Loop Gain | 7 million min into 2kΩ - guarantees <0.1% closed-loop gain error up to 1kHz at G=1000 |
| Slew Rate | 1.7V/µs min - supports clean 10kHz full-scale sine wave output into 2kΩ load |
| CMRR | 117dB min - rejects >700,000:1 common-mode interference in bridge-based transducer circuits |
Pinout & Package
Package: 8-lead plastic dual in-line package (PDIP), N8 variant, 0.300-inch body width, through-hole mountable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOS TRIM | Connects to 10kΩ potentiometer wiper for offset nulling; trimming does not degrade drift specification |
| 2 | −IN | Inverting input terminal; accepts differential signals up to ±11V with minimal bias current (±35nA max) |
| 3 | +IN | Non-inverting input terminal; high common-mode input resistance (≥7GΩ) minimizes loading on high-Z sources |
| 4 | V− | Negative supply rail connection; must be decoupled locally to suppress supply noise coupling |
| 5 | NC | No internal connection; electrically isolated to prevent parasitic coupling in layout |
| 6 | OUT | Amplified output; capable of ±13.0V swing into 2kΩ, sourcing/sinking ±33mA under load |
| 7 | V+ | Positive supply rail connection; supports ±4.5V to ±18V operation per spec |
| 8 | VOS TRIM | Second trim terminal; used with Pin 1 to form balanced nulling network per Figure 1 in datasheet |
Key Features
| Feature | Design Value |
|---|---|
| Low 1/f noise corner | 2Hz - ensures minimal low-frequency noise contribution in DC-coupled audio and sensor applications |
| High open-loop gain stability | 7M min into 2kΩ - maintains precision across temperature and supply variations without external compensation |
| Direct socket replacement | Pin-compatible with OP-07, OP-27, OP-37, and 5534 - enables drop-in upgrade without PCB redesign |
| Thermal drift control | 0.6µV/°C max offset drift - eliminates need for frequent recalibration in industrial temperature environments |
| Robust input protection | Back-to-back diodes without current-limiting resistors - preserves low-noise performance while allowing ±25mA differential input current |
Applications
| Strain Gauge Amplifier | Microphone Preamplifier |
|---|---|
Use Scenario: Amplifying mV-level Wheatstone bridge outputs from metal foil or semiconductor strain gauges in load cells and pressure sensors. IC Role / Device Role / Timing Role: Primary signal conditioning amplifier with precision gain, low drift, and high CMRR to reject bridge excitation noise. Use Value: Enables 0.02% linearity over 0–70°C using only one LT1007CN8 per channel, eliminating need for external trimming resistors. | Use Scenario: Boosting low-level AC-coupled signals from condenser microphones in studio recording and acoustic monitoring systems. IC Role / Device Role / Timing Role: First-stage low-noise voltage amplifier with ultra-low 1/f noise to preserve audio fidelity below 100Hz. Use Value: Delivers <0.0025% THD at 1kHz with 60nVP-P 0.1–10Hz noise, meeting AES17 professional audio standards. |
| Infrared Detector Interface | Direct-Coupled Audio Gain Stage |
Use Scenario: Conditioning photocurrent from HgCdTe infrared detectors in spectroscopy and thermal imaging systems operating at 77K. IC Role / Device Role / Timing Role: Transimpedance amplifier with low input bias current (±35nA max) and high gain accuracy for cryogenic sensor readout. Use Value: Achieves 50mV/µA transimpedance gain with <1µV offset shift over detector cooldown cycle. | Use Scenario: DC-coupled gain block in high-end headphone amplifiers and active crossover networks requiring zero DC offset. IC Role / Device Role / Timing Role: Precision buffer and gain stage with 25µV max VOS and 117dB CMRR to prevent audible thumps during power-up. Use Value: Eliminates coupling capacitors in signal path, preserving bass response and phase coherence down to 0.1Hz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1028CN8 | Lower 0.85nV/√Hz noise, higher 3.8V/µs slew rate, but requires ±5V min supply and has tighter temp range (0°C–70°C) | Better for RF/IF stages where wideband noise dominates; less suitable for low-voltage battery-powered designs | Select LT1028CN8 when 10Hz noise must be <1.5nV/√Hz and supply allows ≥±5V |
| OP27GP | Higher 3.0µV max VOS, 0.1µV/°C drift, 2.8V/µs slew rate, and 800kHz GBW - trade-off between speed and precision | Preferred in high-speed photodiode transimpedance amps where bandwidth >500kHz is required | Choose OP27GP when system needs >2V/µs slew rate and can tolerate 3× higher offset voltage |
Compared with LT1007CN8, LT1028CN8 offers superior noise performance at the cost of higher supply sensitivity, while OP27GP provides faster settling at the expense of DC precision-making LT1007CN8 optimal for DC-accurate, low-noise, moderate-speed applications.
Availability
LT1007CN8 is available at Aetrix Electronics and suitable for strain gauge signal conditioners, microphone preamplifiers, infrared detector interfaces, and direct-coupled audio gain stages requiring stable component supply across industrial and test equipment lifecycles.
Supply support for LT1007CN8 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 support for legacy Linear op amp families including the LT1007 series.
The LT1007 product line was designed specifically for ultralow-noise, high-precision analog signal conditioning in scientific instrumentation, medical devices, and industrial measurement systems where DC accuracy and sub-µV noise are mandatory.
FAQ
What is the maximum operating temperature range for the LT1007CN8?
The LT1007CN8 is rated for 0°C to 70°C ambient operating temperature. This commercial-grade specification is defined in the Absolute Maximum Ratings table and confirmed in the Electrical Characteristics section where "G" parameters apply over this range. The device's thermal resistance (θJA = 130°C/W) and 144mW max power dissipation ensure reliable operation within this envelope when properly heatsinked.
Can the LT1007CN8 replace an OP-07 in an existing design without modifications?
Yes, the LT1007CN8 is pin-compatible with the OP-07 and may be inserted directly into its socket with or without removal of external compensation components. As stated in the Applications Information section, no PCB changes are required. However, verify that the LT1007CN8's higher slew rate (1.7V/µs vs. OP-07's 0.3V/µs) does not induce instability in high-gain feedback networks previously optimized for slower response.
Does the LT1007CN8 require external compensation capacitors?
No, the LT1007CN8 is unity-gain stable and does not require external compensation. Unlike the decompensated LT1037, it features internal compensation enabling stable operation at closed-loop gains ≥1. The datasheet explicitly states "LT1007 is unity-gain stable" and shows gain-phase plots confirming >60° phase margin at G=1, eliminating need for external capacitors in standard configurations.
How is input offset voltage trimmed in the LT1007CN8?
The LT1007CN8 uses wafer-level laser trimming to achieve its 25µV max VOS specification. Pins 1 and 8 are dedicated VOS TRIM terminals supporting connection to a 10kΩ potentiometer. As detailed in Figure 1 of the datasheet, this configuration allows ±2.5mV adjustment range without degrading the 0.6µV/°C drift specification-critical for applications requiring field calibration.
What is the significance of the 2Hz 1/f noise corner frequency in the LT1007CN8?
The 2Hz 1/f corner means voltage noise transitions from dominant 1/f behavior to flat white noise above 2Hz. This enables exceptionally low integrated noise in DC–10Hz bands (60nVP-P)-essential for precision measurements like microvolt threshold detection and strain gauge readouts where low-frequency drift dominates error budgets. It also confirms the device's suitability for applications requiring stable DC gain over minutes to hours.
LT1007CN8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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
LT1007CN8 FAQ
1.How can I place an order for LT1007CN8 through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1007CN8 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 LT1007CN8 reliable?
The price and inventory of LT1007CN8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1007CN8 is usually 5 days.
3.What payment methods are accepted for LT1007CN8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1007CN8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1007CN8?
LT1007CN8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1007CN8 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 LT1007CN8?
For technical support, including LT1007CN8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1007CN8 requirements.
6.How does Aetrix verify that LT1007CN8 is sourced from the original manufacturer or authorized distributors?
All LT1007CN8 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 LT1007CN8 meets industry standards.
7.What is the process for return or replacement of LT1007CN8?
All LT1007CN8 units undergo pre-shipment inspection (PSI). If there is an issue with LT1007CN8, 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 LT1007CN8 part is unused and in its original packaging.
Return procedure for LT1007CN8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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