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Analog Devices Inc. LT1006CN8#PBF
- Part No.:
- LT1006CN8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
LT1006CN8#PBF.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:346
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Product details
Overview
LT1006CN8#PBF from Analog Devices (formerly Linear Technology) is a precision single-supply operational amplifier optimized for 5V operation, featuring 20µV input offset voltage, 0.2µV/°C drift, 340µA supply current, and rail-to-ground output swing within 10mV at 1mA sink. It enables low-voltage strain gauge signal conditioning and thermocouple amplification in battery-powered instrumentation.
For engineers reviewing the LT1006CN8#PBF datasheet, LT1006CN8#PBF pinout, LT1006CN8#PBF application, or LT1006CN8#PBF equivalent, key selection criteria include guaranteed 50µV max offset voltage, ground-sensing input range, micropower programmability via Pin 8, and compatibility with 2.7V minimum supply voltage in industrial sensor interfaces.
Technical Context
The LT1006CN8#PBF employs an all-NPN output stage enabling true ground-sinking capability while maintaining high open-loop gain (2.5 million typical) and 114dB common-mode rejection. Its input stage includes 400Ω series resistors and phase-reversal protection circuitry (Q21/Q22/Q27/Q28) to prevent lock-up when inputs fall below ground-critical for thermocouple and RTD front-ends.
Supply current is programmable via external resistor on Pin 8: open-circuit yields 340µA/0.4V/µs slew rate; connection to V– (Pin 4) increases slew rate to 1.2V/µs; connection to V+ (or low-voltage source) reduces current to 90µA for micropower operation-enabling trade-offs between speed and power without changing layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 20µV typ / 50µV max - enables sub-0.1°C accuracy in platinum RTD conditioners without trimming |
| Offset Drift | 0.2µV/°C typ / 1.3µV/°C max - ensures stable DC gain over 0°C to 70°C industrial temperature range |
| Supply Current | 340µA typ / 520µA max - supports multi-year battery life in 4–20mA transmitters with 5V supply |
| Output Swing Low | 10mV max at 1mA sink - allows direct interfacing to ADC reference inputs requiring true ground-referenced signals |
| CMRR | 114dB typ - rejects 50/60Hz noise in unshielded thermocouple leads near AC mains |
| PSRR | 126dB typ - maintains precision under noisy 5V rail conditions common in mixed-signal PCBs |
| Gain-Bandwidth | 0.4MHz typ at 5V - sufficient for anti-aliasing filters and active low-pass stages up to 100Hz |
Pinout & Package
N8 package: 8-lead plastic dual in-line package (PDIP), 0.300-inch width, through-hole mounting, JEDEC MS-001 compliant. Thermal resistance θJA = 130°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOS TRIM (–) | Connects to wiper of 10kΩ potentiometer for offset nulling; referenced to Pin 5 (VOS TRIM +) |
| 2 | –IN | Inverting input; high-impedance node (250MΩ min) for precision feedback networks |
| 3 | +IN | Non-inverting input; common-mode range extends to ground (0V) for direct sensor interface |
| 4 | V– | Negative supply terminal; must be connected to ground in single-supply configurations |
| 5 | VOS TRIM (+) | Connects to one end of offset null pot; other end to V– (Pin 4) for ±6mV trim range |
| 6 | OUTPUT | Capable of sinking ≥20mA while maintaining >100dB open-loop gain - drives LEDs or low-side switches directly |
| 7 | V+ | Positive supply terminal; operates from 2.7V to ±22V; Pin 8 current injection referenced to this rail |
| 8 | ISY SET | Current injection node (≈60mV above V–) to program supply current: open = 340µA, R to V– = 1.2V/µs, R to V+ = 90µA |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation | Valid down to 2.7V with full spec compliance - eliminates need for charge pumps or dual supplies in portable sensors |
| Ground-sinking output | Sinks 1mA while holding ≤10mV above ground - enables direct driving of ADCs with pseudo-differential inputs |
| Phase-reversal immunity | Input can go to –1.5V without output inversion - prevents servo lock-up in strain gauge bridges during transient overloads |
| Programmable supply current | Adjustable from 90µA to 5.0mA via Pin 8 resistor - supports both micropower sampling and fast-settling hold modes |
| Low 0.1–10Hz noise | 0.55µVP-P - critical for high-resolution DC measurements in weigh scales and medical thermometers |
Applications
| Platinum RTD Signal Conditioner | Thermocouple Amplifier with Cold-Junction Compensation |
|---|---|
Use Scenario: Linearizing and amplifying output of Pt100/1000 sensors across –50°C to +200°C with curvature correction. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with 1.21V reference buffer and 4-wire Kelvin sensing. Use Value: Achieves ±0.25°C accuracy using internal offset trim and 0.2µV/°C drift - eliminates external calibration in factory-set medical devices. | Use Scenario: Amplifying µV-level Type J thermocouple outputs while compensating for ambient cold-junction temperature. IC Role / Device Role / Timing Role: Low-noise, ground-referenced preamplifier with integrated LM334-based cold-junction sensor biasing. Use Value: Delivers ±0.75°C total error at 60°C using single 4.5V AA-cell supply and <500µW quiescent power - enables handheld test equipment. |
| 4–20mA Current Loop Transmitter | Low-Power Active Filter for Sensor Outputs |
Use Scenario: Converting conditioned sensor voltage (e.g., pressure transducer) into industry-standard 4–20mA loop signal. IC Role / Device Role / Timing Role: Output-stage op-amp in Howland current source configuration, sinking loop current through load. Use Value: Sinks 20mA while maintaining 114dB CMRR - rejects ground-loop noise in factory floor wiring without isolation transformers. | Use Scenario: Anti-aliasing and noise filtering of piezoresistive accelerometer outputs before ADC sampling. IC Role / Device Role / Timing Role: Dual-stage Sallen-Key low-pass filter (100Hz cutoff) with unity-gain buffer input stage. Use Value: 0.55µVP-P 0.1–10Hz noise and 250MΩ input impedance preserve SNR in high-Z MEMS sensor interfaces. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision single-supply op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA333AIDR | Zero-drift architecture; 0.1µV/°C max drift vs LT1006CN8#PBF's 1.3µV/°C; higher 350µA supply current | Better long-term stability for metrology; less suitable for battery life >5 years due to higher current | Select OPA333AIDR when drift-critical calibration intervals exceed 12 months; retain LT1006CN8#PBF for cost-sensitive, field-deployed sensors |
| AD8603ARZ | Lower 12nV/√Hz wideband noise vs LT1006CN8#PBF's 23nV/√Hz at 10Hz; 50µV max offset same spec tier | Superior for AC-coupled audio or vibration sensing; lacks LT1006's phase-reversal immunity below ground | Choose AD8603ARZ for bandwidth >10kHz applications; choose LT1006CN8#PBF when input may transiently dip below ground in industrial environments |
Compared with OPA333AIDR and AD8603ARZ, the LT1006CN8#PBF uniquely combines programmable micropower operation (90µA), guaranteed phase-reversal immunity, and rail-to-ground sinking capability - making it irreplaceable in legacy 4–20mA transmitters and cold-junction-compensated thermocouple circuits where reliability under fault conditions is non-negotiable.
Availability
LT1006CN8#PBF is available at Aetrix Electronics and suitable for platinum RTD signal conditioners, thermocouple amplifiers with cold-junction compensation, and 4–20mA current loop transmitters requiring stable component supply across extended production lifecycles.
Supply support for LT1006CN8#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, inheriting its legacy of high-precision analog ICs for industrial and instrumentation markets.
The LT1006 product line was designed specifically for single-supply sensor signal conditioning - addressing ground-referenced inputs, rail-to-ground outputs, and micropower programmability in battery-operated measurement systems.
FAQ
What is the minimum supply voltage for reliable operation of the LT1006CN8#PBF?
The LT1006CN8#PBF is guaranteed to operate down to 2.7V with full electrical specifications met. At this voltage, typical supply current is 320µA, resulting in only 860µW power dissipation - enabling use in energy-harvesting and coin-cell-powered applications where the LT1006CN8#PBF delivers precision without compromising battery life.
How does the LT1006CN8#PBF prevent phase reversal when inputs go below ground?
The LT1006CN8#PBF incorporates dedicated phase-reversal protection circuitry (Q21, Q22, Q27, Q28) that actively clamps internal nodes during negative transients. Unlike LM324 or OP-20, the LT1006CN8#PBF maintains correct polarity even with –1.5V input - a critical feature for strain gauge bridges subject to mechanical shock-induced overvoltage in the LT1006CN8#PBF-based designs.
Can the LT1006CN8#PBF drive a 600Ω load while maintaining precision performance?
Yes - the LT1006CN8#PBF specifies maximum output low voltage of 10mV at 1mA sink into 600Ω, and 350mV at 1mA into ground. Its all-NPN output stage retains high open-loop gain (>0.8 million) under 600Ω loads, ensuring stable closed-loop behavior in active filter and current-source configurations using the LT1006CN8#PBF.
What is the purpose of Pin 8 (ISY SET) on the LT1006CN8#PBF?
Pin 8 on the LT1006CN8#PBF is a current-injection node (~60mV above V–) used to program supply current: leaving it open yields 340µA/0.4V/µs operation; connecting to V– (Pin 4) increases slew rate to 1.2V/µs; connecting to V+ reduces current to 90µA. This enables dynamic optimization of the LT1006CN8#PBF for either speed or battery life without hardware changes.
Is the LT1006CN8#PBF suitable for use as a precision comparator?
Yes - the LT1006CN8#PBF's rail-to-ground output swing, TTL-compatible low-state voltage (<10mV), and 114dB CMRR make it effective as a precision comparator in single-supply systems. Its 0.4V/µs slew rate supports response times under 10µs for 2mV overdrive, and the LT1006CN8#PBF avoids false triggering from common-mode noise in industrial sensor thresholds.
LT1006CN8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 1.2V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- -
- Current - Input Bias:
- 10 nA
- Voltage - Input Offset:
- 30 µV
- Current - Supply:
- 360µA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 5 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
LT1006CN8#PBF FAQ
1.How can I place an order for LT1006CN8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1006CN8#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 LT1006CN8#PBF reliable?
The price and inventory of LT1006CN8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1006CN8#PBF is usually 5 days.
3.What payment methods are accepted for LT1006CN8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1006CN8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1006CN8#PBF?
LT1006CN8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1006CN8#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 LT1006CN8#PBF?
For technical support, including LT1006CN8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1006CN8#PBF requirements.
6.How does Aetrix verify that LT1006CN8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1006CN8#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 LT1006CN8#PBF meets industry standards.
7.What is the process for return or replacement of LT1006CN8#PBF?
All LT1006CN8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1006CN8#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 LT1006CN8#PBF part is unused and in its original packaging.
Return procedure for LT1006CN8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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