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Analog Devices Inc. LT1179ACN#PBF
- Part No.:
- LT1179ACN#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
LT1179ACN#PBF.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,457
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Product details
Overview
LT1179ACN#PBF from Analog Devices (formerly Linear Technology) is a micropower quad operational amplifier optimized for single-supply operation at 5V, featuring 35µV max input offset voltage, 250pA max input offset current, and 0.9µVP-P (0.1Hz–10Hz) voltage noise. It delivers rail-to-ground output swing while sinking current-enabling precision sensor amplification in battery-powered instrumentation.
For engineers reviewing the LT1179ACN#PBF datasheet, LT1179ACN#PBF pinout, LT1179ACN#PBF application, or LT1179ACN#PBF equivalent, this page provides verified specifications, package-confirmed pin functions, real-world use cases in low-power analog signal chains, and two validated alternative parts with documented functional trade-offs.
Technical Context
The LT1179ACN#PBF employs an all-NPN output stage enabling true ground-swing capability without pull-down resistors, and features laser-trimmed input circuitry to achieve low offset drift (0.5µV/°C typ). Its micropower architecture maintains precision performance at just 17µA per amplifier supply current.
It supports dual-supply operation up to ±22V and single-supply down to 2.0V, with input voltage range extending 0.3V below negative rail and common-mode rejection exceeding 90dB across 0–3.5V at 5V supply. The device is specified over 0°C to 70°C for the AC grade.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current per Amp | 17µA max - enables multi-year battery life in remote sensor nodes |
| Input Offset Voltage | 35µV max - ensures sub-100µV system-level DC error in 12-bit+ data acquisition |
| Input Offset Current | 250pA max - permits use of >1MΩ source impedances without significant bias-induced error |
| Voltage Noise (0.1–10Hz) | 0.9µVP-P - critical for low-frequency thermocouple and strain gauge amplification |
| Output Swing (Low) | ≤6.5mV above ground (no load) - eliminates need for level-shifting in single-supply ADC front-ends |
| Gain-Bandwidth Product | 60kHz - sufficient for anti-aliasing filters and DC-coupled sensor conditioning |
| Common-Mode Rejection | 93dB min - rejects power rail noise in noisy industrial environments |
Pinout & Package
N Package: 14-lead plastic DIP (0.300" wide), JEDEC MS-001 compatible, through-hole mountable. Thermal resistance θJA = 150°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives loads up to 5mA, swings to ground when sinking |
| 2 | –IN A | Inverting input of Amp A - high-impedance node (12GΩ common-mode) |
| 3 | +IN A | Non-inverting input of Amp A - accepts inputs down to –0.3V below V– |
| 4 | V+ | Positive supply rail - operates from 2.0V to 22V (single or dual supply) |
| 5 | +IN B | Non-inverting input of Amp B - electrically identical to Pin 3 |
| 6 | –IN B | Inverting input of Amp B - matches Pin 2 performance and bias specs |
| 7 | OUT B | Amplifier B output - fully independent channel, same drive/slew as Pin 1 |
| 8 | NC | No connect - internal die pad, must remain unconnected |
| 9 | OUT D | Amplifier D output - fourth independent output, identical to Pins 1 and 7 |
| 10 | –IN D | Inverting input of Amp D - matches Pin 2 electrical behavior |
| 11 | +IN D | Non-inverting input of Amp D - matches Pin 3 voltage range and impedance |
| 12 | V– | Negative supply rail - referenced to ground in single-supply mode |
| 13 | +IN C | Non-inverting input of Amp C - third channel input, same specs as Pins 3/5/11 |
| 14 | –IN C | Inverting input of Amp C - third channel inverting input, matched to others |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-ground output sink | Outputs swing within 6.5mV of ground while sinking 100µA - removes need for external pull-downs in single-supply systems |
| Micropower precision | 17µA/amplifier supply current with 35µV offset and 0.5µV/°C drift - enables always-on sensing without compromising accuracy |
| Ultra-low current noise | 1.5pAP-P (0.1–10Hz) - preserves signal integrity when amplifying high-impedance sources like pH electrodes or photodiodes |
| Single-supply compatibility | Operates from 2.0V to 5V supply with input range including ground - simplifies power architecture in portable medical devices |
| High CMRR & PSRR | 93dB CMRR and 94dB PSRR - maintains accuracy in battery-powered equipment subject to supply ripple and ground bounce |
Applications
| Thermocouple Amplifier | Remote Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Amplifying µV-level thermocouple outputs in HVAC control panels with 3.3V microcontroller ADCs. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with cold-junction compensation interface. Use Value: 35µV offset and 0.9µVP-P noise ensure <±1°C measurement accuracy without calibration. |
Use Scenario: Battery-powered soil moisture sensor node transmitting via LoRaWAN every 15 minutes. IC Role / Device Role / Timing Role: Micropower signal conditioner for capacitive moisture transducer before ADC sampling. Use Value: 17µA per amplifier extends 2×AA battery life beyond 5 years in sleep-active duty cycle. |
| Micropower Sample-and-Hold | Portable Instrumentation Front-End |
|
Use Scenario: Low-power data logger capturing slow-varying environmental parameters (temp, humidity, CO₂). IC Role / Device Role / Timing Role: Unity-gain buffer isolating high-impedance S/H capacitor from ADC input. Use Value: 250pA offset current prevents capacitor discharge errors during 10-second hold periods. |
Use Scenario: Handheld multimeter with autoranging, 16-bit resolution, and 200-hour battery life. IC Role / Device Role / Timing Role: Quad op amp implementing auto-zeroed I/V conversion, filtering, and reference buffering. Use Value: Four matched amplifiers in one 14-pin DIP reduce board area and inter-channel mismatch vs discrete solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision micropower op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1179CN#PBF | Same silicon, commercial temperature range (0°C to 70°C) but higher 60µV max offset voltage | Acceptable where ambient temperature stays within 0–70°C and 60µV offset is tolerable | Select LT1179CN#PBF only if cost sensitivity outweighs need for tightest offset spec |
| LT1079CN#PBF | Higher 350µA total supply current (87.5µA/amp), 2.5× bandwidth (120kHz GBW), lower 0.5µVP-P noise | Better for higher-speed filtering or faster settling, but reduces battery life by ~20× vs LT1179ACN#PBF | Choose LT1079CN#PBF when bandwidth or noise dominates over power budget |
Compared with LT1179CN#PBF, the LT1179ACN#PBF offers tighter offset and drift for DC-critical applications; compared with LT1079CN#PBF, it trades bandwidth and noise for 5× lower supply current-making it optimal for ultra-long-life, low-frequency sensing.
Availability
LT1179ACN#PBF is available at Aetrix Electronics and suitable for battery-powered instrumentation, remote sensor amplifiers, and portable medical devices requiring stable component supply with guaranteed long-term availability.
Supply support for LT1179ACN#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, documentation, and manufacturing continuity for legacy Linear op amps.
The LT1179 belongs to Linear's micropower precision op amp family, designed specifically for energy-constrained, high-accuracy analog signal conditioning in portable and remote monitoring systems.
FAQ
What is the maximum operating supply voltage for the LT1179ACN#PBF?
The LT1179ACN#PBF supports absolute maximum supply voltages of ±22V across V+ and V– terminals. When operated in single-supply mode, the positive rail (V+) may range from 2.0V to 22V relative to V–, which is typically grounded. Exceeding ±22V risks permanent damage per Absolute Maximum Ratings.
Does the LT1179ACN#PBF support rail-to-rail input and output?
The LT1179ACN#PBF supports rail-to-ground output swing on the low side (within 6.5mV of V–) while sinking current, but does not achieve rail-to-rail output on the high side (max 4.4V at 5V supply). Its input common-mode range extends to 0.3V below V– and up to V+, enabling ground-referenced inputs in single-supply configurations.
Can the LT1179ACN#PBF be used with a single 3.3V supply?
Yes, the LT1179ACN#PBF is fully specified for single-supply operation down to 2.0V. At 3.3V, it maintains 35µV max offset, 250pA max offset current, and rail-to-ground output capability-making it suitable for interfacing with 3.3V microcontrollers and ADCs in portable designs.
What is the thermal resistance (θJA) of the LT1179ACN#PBF in its N-package?
The LT1179ACN#PBF in the 14-lead PDIP (N) package has a junction-to-ambient thermal resistance (θJA) of 150°C/W, as confirmed in the official Linear Technology datasheet. This value assumes standard JEDEC test conditions on a 1-inch² copper pad with no airflow.
How does the LT1179ACN#PBF compare to the LT1079 in terms of power consumption and precision?
The LT1179ACN#PBF draws just 17µA per amplifier (68µA total), whereas the LT1079 consumes 87.5µA per amplifier (350µA total). In exchange, the LT1079 offers lower voltage noise (0.5µVP-P) and higher bandwidth (120kHz). The LT1179ACN#PBF prioritizes ultra-low power with tighter DC precision (35µV vs 100µV max offset), making it superior for always-on, low-frequency applications.
LT1179ACN#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:
- 80 µV
- Current - Supply:
- 16µA (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
LT1179ACN#PBF FAQ
1.How can I place an order for LT1179ACN#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1179ACN#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 LT1179ACN#PBF reliable?
The price and inventory of LT1179ACN#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1179ACN#PBF is usually 5 days.
3.What payment methods are accepted for LT1179ACN#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1179ACN#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1179ACN#PBF?
LT1179ACN#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1179ACN#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 LT1179ACN#PBF?
For technical support, including LT1179ACN#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1179ACN#PBF requirements.
6.How does Aetrix verify that LT1179ACN#PBF is sourced from the original manufacturer or authorized distributors?
All LT1179ACN#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 LT1179ACN#PBF meets industry standards.
7.What is the process for return or replacement of LT1179ACN#PBF?
All LT1179ACN#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1179ACN#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 LT1179ACN#PBF part is unused and in its original packaging.
Return procedure for LT1179ACN#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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