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Analog Devices Inc. LT1179CN#PBF
- Part No.:
- LT1179CN#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
LT1179CN#PBF.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,633
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Product details
Overview
LT1179CN#PBF from Analog Devices (formerly Linear Technology) is a micropower quad operational amplifier optimized for single-supply operation at 5V, featuring 17µA max supply current per amplifier, 35µV typical input offset voltage, and rail-to-ground output swing while sinking current. It enables precision low-power signal conditioning in battery-powered sensor front-ends and portable instrumentation.
For engineers reviewing the LT1179CN#PBF datasheet, LT1179CN#PBF pinout, LT1179CN#PBF application, or LT1179CN#PBF equivalent, key selection criteria include guaranteed 0°C to 70°C operation, 14-pin PDIP package compatibility, ultra-low input bias current (≤5nA), and true single-supply capability with inputs extending below ground and outputs reaching within millivolts of ground.
Technical Context
The LT1179CN#PBF implements an all-NPN output stage enabling output swing to ground under sink load without pull-down resistors, and features picoampere-level input offset current (50pA typ) and low 1.5pAp-p current noise (0.1Hz–10Hz), supporting high-impedance source interfacing. Its precision architecture delivers 70µV max offset voltage and 0.5µV/°C max drift over temperature.
Designed for micropower systems, it operates from as low as 2.0V total supply (e.g., one lithium cell), maintains 85kHz gain-bandwidth product and 0.04V/µs slew rate at ±15V, and achieves 93dB min common-mode rejection and 94dB min power-supply rejection at 25°C with 5V/0V supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 17µA max per amplifier - enables multi-year battery life in always-on remote sensors. |
| Input Offset Voltage | 35µV typical, 100µV max - ensures <0.1% error in 350mV full-scale thermocouple amplification. |
| Input Bias Current | 5nA max - permits use with >10MΩ source impedances without significant DC error. |
| Output Swing | Within 6.5mV of ground while sinking 100µA - eliminates need for external pull-down resistors in single-supply designs. |
| Gain-Bandwidth | 85kHz - supports stable unity-gain buffering of DC–80kHz physiological signals. |
| CMRR / PSRR | 93dB / 94dB min - rejects power rail noise and common-mode interference in noisy industrial environments. |
| Operating Temp | 0°C to 70°C - qualified for commercial-grade embedded instrumentation and portable test equipment. |
Pinout & Package
N Package: 14-lead plastic dual-in-line (PDIP), 0.300-inch width, through-hole mount. RoHS-compliant lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives loads down to ground with 5mA sink/source capability. |
| 2 | –IN A | Inverting input A - high-impedance node (12GΩ common-mode) for precision feedback networks. |
| 3 | +IN A | Non-inverting input A - accepts input voltages down to –0.3V below ground (V–). |
| 4 | V+ | Positive supply rail - accepts 2.0V to ±22V total supply range; 5V/0V standard configuration. |
| 5 | +IN B | Non-inverting input B - electrically isolated from other channels; supports independent sensor interfaces. |
| 6 | –IN B | Inverting input B - matched offset and bias specs to Pin 2 for dual-channel matched performance. |
| 7 | OUT B | Amplifier B output - identical drive strength and rail-swing behavior as Pin 1. |
| 8 | NC | No connect - internal die pad; must remain unconnected on PCB. |
| 9 | OUT D | Amplifier D output - fourth independent output; shares same electrical specs as Pins 1 and 7. |
| 10 | –IN D | Inverting input D - fully specified for offset, drift, and noise; usable across full temp range. |
| 11 | +IN D | Non-inverting input D - supports true single-supply operation with input range including ground. |
| 12 | V– | Negative supply rail - tied to ground in single-supply mode; accepts –22V in dual-supply configurations. |
| 13 | +IN C | Non-inverting input C - third channel input; matches AC/DC specs of Pins 3, 5, and 11. |
| 14 | –IN C | Inverting input C - provides fourth matched amplifier pair with guaranteed channel separation >130dB. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-ground output | Outputs swing to within 6.5mV of ground while sinking 100µA - removes need for power-wasting pull-down resistors in 5V systems. |
| Micropower operation | 17µA max per amplifier at 25°C - enables four-channel precision amplification on <100µA total supply budget. |
| Picoampere input offset | 50pA typical offset current - preserves accuracy when amplifying signals from megaohm-level pH or photodiode sources. |
| True single-supply support | Input voltage range includes ground and extends 0.3V below; operates from 2.0V total supply - compatible with Li-ion and NiCd battery stacks. |
| Low 1/f noise | 0.9µVp-p (0.1Hz–10Hz) voltage noise - critical for DC-stable measurements in thermopile and strain gauge applications. |
Applications
| Remote Sensor Amplifier | Portable Instrumentation |
|---|---|
Use Scenario: Amplifying µV-level output from a distributed temperature sensor node powered by two AA batteries. IC Role / Device Role / Timing Role: Quad op amp providing simultaneous gain, filtering, and level-shifting for four analog sensor channels before ADC sampling. Use Value: 17µA per amplifier enables >5-year battery life; rail-to-ground output allows direct interface to 0–3.3V SAR ADC reference. | Use Scenario: Front-end signal conditioning in handheld multimeter measuring mV-range DC voltages. IC Role / Device Role / Timing Role: Precision buffer and differential amplifier for high-Z input protection and offset correction. Use Value: 35µV offset and 0.5µV/°C drift ensure <0.01% reading stability across operating temperature range. |
| Thermocouple Amplifier | Micropower Filters |
Use Scenario: Cold-junction compensation and amplification of Type-K thermocouple output in battery-operated data loggers. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier with matched input pairs and low thermal EMF layout. Use Value: 5nA max input bias current prevents error from series resistance in thermocouple extension wires. | Use Scenario: 4th-order active anti-aliasing filter preceding sigma-delta ADC in wireless environmental monitor. IC Role / Device Role / Timing Role: Quad op amp implementing cascaded Sallen-Key stages with precise pole placement. Use Value: 85kHz GBW supports stable 10kHz cutoff; low noise preserves SNR in sub-10µV signal paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1179CN8#PBF | Same die, identical electrical specs; differs only in tape-and-reel packaging (no functional difference). | No application difference - pin-compatible drop-in replacement for board-level assembly with automated pick-and-place. | Select LT1179CN8#PBF for high-volume production requiring reel packaging; LT1179CN#PBF remains optimal for prototyping and low-volume hand-soldering. |
| OP4177ARZ | Higher precision (12µV max VOS), lower noise (7.5nV/√Hz), but 500µA supply current - 30× higher quiescent draw. | Suitable only where ultra-low offset dominates power budget; not viable for battery-critical applications. | Choose OP4177ARZ only when offset drift (<0.3µV/°C) and wide bandwidth (1.3MHz) outweigh micropower requirements. |
Compared with LT1179CN#PBF, LT1179CN8#PBF offers identical performance in tape-and-reel format for automated manufacturing, while OP4177ARZ trades 30× higher supply current for superior DC precision - making LT1179CN#PBF the sole choice for multi-year battery life with sub-100µA system budgets.
Availability
LT1179CN#PBF is available at Aetrix Electronics and suitable for remote sensor amplifiers, portable instrumentation, thermocouple interfaces, and micropower filter designs requiring stable component supply and long-term obsolescence management.
Supply support for LT1179CN#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 maintains full product support, datasheets, and application engineering for legacy Linear parts including the LT1179 series.
The LT1179CN#PBF belongs to Linear's micropower precision op amp family, designed specifically for battery-powered instrumentation and low-power sensor signal chains where supply current, input bias, and rail-to-rail output capability are critical.
FAQ
What is the maximum supply voltage rating for LT1179CN#PBF?
The LT1179CN#PBF has an absolute maximum supply voltage rating of ±22V across V+ and V– pins. In single-supply operation, this translates to a maximum V+ of +22V with V– grounded. Operation beyond these limits risks permanent device damage and is strictly prohibited per Linear Technology's Absolute Maximum Ratings table.
Does LT1179CN#PBF support true rail-to-rail input and output?
The LT1179CN#PBF supports rail-to-ground output (swings to within 6.5mV of ground while sinking current) and input voltage range that includes ground and extends 0.3V below it. However, it does not achieve rail-to-rail output swing at the positive rail - maximum output is typically 4.2V at 5V supply. Input common-mode range does not extend to V+.
Can LT1179CN#PBF operate from a single 3.3V supply?
Yes, LT1179CN#PBF is fully specified for single-supply operation down to 2.0V total supply. At 3.3V, it maintains 17µA max supply current per amplifier, 100µV max input offset voltage, and retains rail-to-ground output capability. Performance metrics such as GBW (60kHz min) and CMRR (90dB min) remain valid per the Electrical Characteristics table for VS = 3.3V, 0V conditions.
What is the thermal resistance θJA for LT1179CN#PBF in the N package?
The LT1179CN#PBF in the 14-lead PDIP (N) package has a junction-to-ambient thermal resistance (θJA) of 150°C/W, as documented in the "Package Information" section of the official datasheet. This value assumes standard JEDEC 2S2P test board conditions and is critical for calculating maximum allowable power dissipation at elevated ambient temperatures.
Is LT1179CN#PBF pin-compatible with other quad op amps like LM324?
No, LT1179CN#PBF is not pin-compatible with LM324. While both are 14-pin quad op amps, LT1179CN#PBF uses a different pinout: V– is on Pin 12 (not Pin 4), and Pin 8 is NC (not V–). Substituting without PCB modification will result in incorrect biasing and non-functional circuits. Always verify pin mapping using the official LT1179 pin diagram before replacement.
LT1179CN#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 0.04V/µs
- Gain Bandwidth Product:
- 85 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 3 nA
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 17µA (x4 Channels)
- 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:
- 14-PDIP
LT1179CN#PBF FAQ
1.How can I place an order for LT1179CN#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1179CN#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 LT1179CN#PBF reliable?
The price and inventory of LT1179CN#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1179CN#PBF is usually 5 days.
3.What payment methods are accepted for LT1179CN#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1179CN#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1179CN#PBF?
LT1179CN#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1179CN#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 LT1179CN#PBF?
For technical support, including LT1179CN#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1179CN#PBF requirements.
6.How does Aetrix verify that LT1179CN#PBF is sourced from the original manufacturer or authorized distributors?
All LT1179CN#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 LT1179CN#PBF meets industry standards.
7.What is the process for return or replacement of LT1179CN#PBF?
All LT1179CN#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1179CN#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 LT1179CN#PBF part is unused and in its original packaging.
Return procedure for LT1179CN#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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