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Analog Devices Inc. LT1001CS8
- Part No.:
- LT1001CS8
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1001CS8.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,961
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Product details
Overview
LT1001CS8 from Analog Devices (formerly Linear Technology) is a precision operational amplifier in an 8-pin plastic SOIC package, delivering guaranteed 60 µV max input offset voltage, 1.0 µV/°C max drift, and 110 dB min CMRR at 0°C to 125°C. It enables high-accuracy signal conditioning in platinum RTD interfaces and thermocouple amplifiers where long-term stability and low warm-up drift are critical.
For engineers reviewing the LT1001CS8 datasheet, LT1001CS8 pinout, LT1001CS8 application, or LT1001CS8 equivalent, key selection factors include its ±15 V supply operation, 0.3 µVP-P (0.1–10 Hz) noise, 0.25 V/µs slew rate, guaranteed 400 V/mV large-signal gain at 10 mA load, and compatibility with OP-07/OP-05 socket replacements without external compensation.
Technical Context
The LT1001CS8 employs a proprietary bipolar process optimized for statistical parameter distribution control-ensuring >95% of units exhibit <50 µV offset voltage. Its input stage uses matched PNP transistors to achieve low bias current (±4 nA max) and high differential input resistance (15 MΩ min), while maintaining full-rail common-mode range (±13 V).
Internally trimmed at wafer test, the device supports optional external offset nulling via pins 1 and 8 without degrading thermal drift performance. It operates stably from ±3 V to ±18 V supplies and remains unity-gain stable with capacitive loads up to 50 pF, enabling direct replacement in legacy 725/108A designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 60 µV max - ensures ≤0.0003% full-scale error in 20 V-range voltage followers |
| Average Offset Drift | 1.0 µV/°C max - limits temperature-induced error to <12 µV over 0–125°C industrial range |
| CMRR | 110 dB min - rejects >100,000:1 common-mode interference in bridge sensor circuits |
| PSRR | 106 dB min - maintains accuracy despite ±1 V ripple on ±15 V supplies |
| Large-Signal Voltage Gain | 400 V/mV min at 2 kΩ load - guarantees ≥80 dB loop gain for precision closed-loop configurations |
| Output Swing | ±12.5 V min into 2 kΩ - delivers 25 Vpp dynamic range for 12-bit+ data acquisition systems |
| Supply Current | 1.0 mA max - enables low-power operation in battery-backed instrumentation |
Pinout & Package
LT1001CS8 is housed in an 8-pin plastic small-outline integrated circuit (SOIC-N) package, 0.150-inch body width, with gull-wing leads and JEDEC MS-012AC compliance. Pin 1 is marked by a beveled corner or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Offset Null (–) | Connects to wiper of 10 kΩ potentiometer for fine zero-adjust; does not degrade drift when trimmed |
| 2 | Inverting Input (–IN) | Differential input node; high impedance (15 MΩ min) and low bias current (±4 nA max) |
| 3 | Non-Inverting Input (+IN) | Differential input node; matched to Pin 2 for optimal CMRR and offset rejection |
| 4 | V– (Negative Supply) | Connects to negative rail; supports operation down to –18 V; case not internally connected |
| 5 | Offset Null (+) | Second null terminal; used with Pin 1 to form balanced trim network |
| 6 | Output (OUT) | Capable of sourcing/sinking ≥10 mA; drives 2 kΩ load to ±12.5 V with <0.01% linearity error |
| 7 | V+ (Positive Supply) | Connects to positive rail; supports operation up to +18 V; internal ESD protection included |
| 8 | No Connect (NC) | Internally unconnected; must remain floating or grounded per layout best practices |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed Low Offset Voltage | 60 µV max across full 0°C to 125°C range - eliminates need for system-level calibration in Class A sensor front-ends |
| Low Power Dissipation | 80 mW max at ±15 V - reduces self-heating drift by ~50% vs. legacy OP-07, improving warm-up stability |
| Enhanced Output Drive | 10 mA load current with guaranteed gain - supports direct driving of ADC reference buffers or low-Z instrumentation loads |
| 100% Tested Low-Frequency Noise | 0.3 µVP-P (0.1–10 Hz) - enables sub-µV resolution in DC-coupled strain gauge and thermopile amplifiers |
| Socket-Compatible Replacement | Direct drop-in for OP-07, OP-05, 725, 108A - no PCB changes required; nulling components removable |
Applications
| Thermocouple Amplifier | Platinum RTD Interface |
|---|---|
Use Scenario: Amplifying µV-level Seebeck voltages from Type K thermocouples in industrial furnace monitoring. IC Role / Device Role / Timing Role: Primary DC-coupled instrumentation amplifier front-end with cold-junction compensation integration. Use Value: 60 µV max offset and 1.0 µV/°C drift ensure ≤0.025°C measurement uncertainty over 0–100°C span without recalibration. | Use Scenario: Linearizing and scaling output of 100 Ω platinum RTD (PT100) in medical diagnostic equipment. IC Role / Device Role / Timing Role: Precision voltage follower and excitation current source controller in 4-wire Kelvin configuration. Use Value: Guaranteed 110 dB CMRR rejects common-mode noise from shared power rails, enabling ±0.025°C accuracy over 0–100°C as shown in LT1001 TA01 reference design. |
| Strain Gauge Signal Conditioner | High-Accuracy Data Acquisition |
Use Scenario: Conditioning mV-level Wheatstone bridge outputs from load cells in test-and-measurement platforms. IC Role / Device Role / Timing Role: First-stage gain and offset adjustment amplifier in ratiometric bridge readout architecture. Use Value: 4 nA max input bias current prevents bridge imbalance errors; 0.3 µVP-P noise preserves 18-bit effective resolution at 10 Hz bandwidth. | Use Scenario: Front-end buffer for 16-bit SAR ADCs in portable environmental sensors requiring battery longevity. IC Role / Device Role / Timing Role: Unity-gain stable driver with low output impedance (<1 Ω at DC) and fast settling to minimize acquisition dead time. Use Value: 0.25 V/µs slew rate and 0.8 MHz GBW support 100 kSPS sampling with <0.001% gain error; 1.0 mA supply current extends battery life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP07CP | Higher 75 µV max offset, 1.3 µV/°C drift, 120 dB CMRR; requires external compensation capacitor | Limited to ±15 V supply; higher quiescent current (2.5 mA) increases self-heating | Preferred only where legacy OP07 footprint is mandatory and tighter drift spec is not required |
| AD8628ARZ | Zero-drift auto-zero architecture; 1 µV max offset, 0.005 µV/°C drift; 1.5 MHz GBW, but higher 1.2 nV/√Hz noise | Not socket-compatible; different pinout; unsuitable for direct OP-07 replacement without layout change | Chosen for ultra-low drift applications where board redesign is acceptable and noise floor permits |
Compared with OP07CP and AD8628ARZ, the LT1001CS8 uniquely balances guaranteed industrial-temperature precision, socket compatibility, and low power-making it optimal for retrofitting legacy systems or cost-sensitive high-accuracy analog front-ends where zero-drift complexity is unnecessary.
Availability
LT1001CS8 is available at Aetrix Electronics and suitable for thermocouple amplifiers, platinum RTD interfaces, strain gauge signal conditioners, and high-accuracy data acquisition systems requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for LT1001CS8 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, Inc. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies for precision measurement and control.
The LT1001 series was designed specifically for high-stability DC-coupled instrumentation applications-emphasizing statistical parameter control, low warm-up drift, and seamless replacement of legacy precision op amps without layout or compensation changes.
FAQ
What is the maximum operating temperature range for the LT1001CS8?
The LT1001CS8 is specified for operation from 0°C to 125°C ambient temperature. This commercial-grade temperature range is validated across all key parameters including input offset voltage (60 µV max), drift (1.0 µV/°C max), and CMRR (110 dB min). The device's thermal design ensures stable performance in industrial enclosures and automotive under-hood environments where ambient temperatures approach 125°C.
Can the LT1001CS8 replace an OP-07 in an existing design without modifications?
Yes, the LT1001CS8 is a direct socket-compatible replacement for the OP-07 in 8-pin DIP or SOIC footprints. It requires no external frequency compensation or nulling components, and its pinout matches OP-07 for Pins 1–8. The LT1001CS8 achieves lower power dissipation (80 mW vs. OP-07's ~150 mW), reducing warm-up drift-making it suitable for drop-in upgrades in legacy thermocouple or RTD amplifier circuits.
Does the LT1001CS8 require external offset nulling for precision applications?
No-external nulling is optional. The LT1001CS8 is factory-trimmed to 60 µV max offset, and its internal trimming ensures low drift without external components. However, Pins 1 and 5 support a 10 kΩ potentiometer for sub-µV adjustments if required. Trimming introduces only (VOS/300) µV/°C additional drift-e.g., adjusting to 300 µV adds just 1 µV/°C-preserving overall system accuracy.
What is the typical 0.1 Hz to 10 Hz noise performance of the LT1001CS8?
The LT1001CS8 delivers 0.3 µVP-P typical input-referred noise in the 0.1 Hz to 10 Hz band, measured per standard methodology. This low flicker noise enables high-resolution DC measurements in applications like strain gauge bridges and thermopile sensors. The specification is 100% lot-tested, ensuring consistent low-frequency noise performance across production batches of the LT1001CS8.
Is the LT1001CS8 stable driving capacitive loads such as ADC input capacitors?
Yes-the LT1001CS8 is unity-gain stable and characterized for capacitive loads up to 50 pF with minimal overshoot (<5%). Its internal compensation allows direct connection to SAR ADC inputs (typically 10–30 pF) without external isolation resistors. For loads >50 pF, a series resistor (e.g., 20 Ω) between LT1001CS8 output and ADC input restores stability while preserving settling time within 1 µs for 16-bit accuracy.
LT1001CS8 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:
- 0.25V/µs
- Gain Bandwidth Product:
- 800 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 700 pA
- Voltage - Input Offset:
- 18 µV
- Current - Supply:
- -
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 6 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- 0°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LT1001CS8 FAQ
1.How can I place an order for LT1001CS8 through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1001CS8 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 LT1001CS8 reliable?
The price and inventory of LT1001CS8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1001CS8 is usually 5 days.
3.What payment methods are accepted for LT1001CS8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1001CS8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1001CS8?
LT1001CS8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1001CS8 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 LT1001CS8?
For technical support, including LT1001CS8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1001CS8 requirements.
6.How does Aetrix verify that LT1001CS8 is sourced from the original manufacturer or authorized distributors?
All LT1001CS8 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 LT1001CS8 meets industry standards.
7.What is the process for return or replacement of LT1001CS8?
All LT1001CS8 units undergo pre-shipment inspection (PSI). If there is an issue with LT1001CS8, 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 LT1001CS8 part is unused and in its original packaging.
Return procedure for LT1001CS8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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