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Analog Devices Inc. LT1079ISW#TRPBF
- Part No.:
- LT1079ISW#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
LT1079ISW#TRPBF.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,299
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Product details
Overview
LT1079ISW#TRPBF from Analog Devices (formerly Linear Technology) is a micropower quad precision operational amplifier optimized for single-supply operation at 5V, featuring 60 μV max input offset voltage, 0.7 μV/°C max offset drift, and 50 μA max supply current per amplifier in the 16-lead SOIC-Wide (SW) package. It delivers rail-to-rail output sinking capability down to ≤130 mV above ground while sourcing/sinking 5 mA, enabling direct interface with low-voltage microcontrollers and battery-powered sensor front-ends.
For engineers reviewing the LT1079ISW#TRPBF datasheet, LT1079ISW#TRPBF pinout, LT1079ISW#TRPBF application, or LT1079ISW#TRPBF equivalent, key selection criteria include its guaranteed performance over –40°C to +85°C, 200 kHz gain bandwidth, 0.07 V/μs slew rate, and ability to operate from as low as 2.2 V supply - critical for lithium-cell and energy-harvesting systems requiring precision amplification without pull-down resistors.
Technical Context
The LT1079ISW#TRPBF employs an all-NPN output stage enabling true ground-swing capability when sinking current, eliminating need for power-wasting pull-down resistors. Its input stage incorporates series input protection resistors and phase-reversal immunity, allowing safe operation with inputs up to –1 V below ground without latch-up or output inversion.
Designed specifically for micropower precision, it achieves 0.6 μVP-P (0.1–10 Hz) voltage noise and 3 pAP-P current noise - performance typically found only in op amps consuming 10× more supply current - while maintaining 97 dB CMRR and 102 dB PSRR at 5 V/0 V supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current per Amp | 43–60 μA (guaranteed over –40°C to +85°C; enables multi-year battery life in portable sensors) |
| Input Offset Voltage | 100–560 μV (max at –40°C to +85°C; supports <12-bit accuracy in 3.3 V systems without trimming) |
| Offset Voltage Drift | 0.7–4.0 μV/°C (max over temperature; ensures stable DC gain in thermocouple or RTD signal chains) |
| Gain Bandwidth Product | 200 kHz (enables stable closed-loop gain ≥10 up to 20 kHz; sufficient for anti-aliasing and sensor filtering) |
| Slew Rate | 0.04–0.07 V/μs (supports 100 Hz full-scale step response with <0.1% settling error) |
| Output Swing (Low) | ≤130 mV above ground at 100 μA sink (enables direct interfacing with 0 V-referenced ADCs or logic) |
| Input Voltage Range | Extends 0.3 V below ground (allows robust handling of transient undershoot in industrial I/O) |
Pinout & Package
LT1079ISW#TRPBF is housed in a 16-lead plastic SOIC-Wide (SW) package with 0.3-inch body width and standard 1.27 mm pitch. Thermal resistance θJA = 220°C/W; maximum junction temperature = 110°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 9, 13 | –IN (Inverting Input) | High-impedance differential input per amplifier; accepts signals down to –0.3 V |
| 2, 6, 10, 14 | +IN (Noninverting Input) | High-impedance differential input per amplifier; includes internal ESD protection |
| 3, 7, 11, 15 | OUT (Output) | Class-AB output capable of sourcing/sinking 5 mA; swings to ≤130 mV above ground |
| 4 | V+ | Positive supply rail (2.2 V to ±22 V); decoupling required within 1 cm |
| 12 | V– | Negative supply rail (typically 0 V for single supply; supports bipolar operation) |
| 8, 16 | NC | No-connect pins; must be left floating or tied to V– for mechanical stability |
Key Features
| Feature | Design Value |
|---|---|
| Ground-swing output stage | Eliminates external pull-down resistors, reducing quiescent power by ≥300 μA in instrumentation amplifiers |
| Phase-reversal immunity | Prevents output lockup during input transients < –1 V, critical for servo and closed-loop control |
| Sub-100 nA input bias current | Enables use of >1 MΩ source impedances in thermistor/RTD circuits without gain error |
| 0.1–10 Hz noise performance | 0.6 μVP-P voltage noise supports high-resolution DC measurements in medical and environmental sensors |
| Single-supply optimization | Fully specified at 5 V/0 V with trimmed offset; no design compromises vs. dual-supply alternatives |
Applications
| Thermocouple Amplifier | Micropower Instrumentation Amplifier |
|---|---|
Use Scenario: Amplifying µV-level thermocouple outputs in portable gas analyzers powered by two AA cells. IC Role / Device Role / Timing Role: First-stage low-noise, low-drift amplifier with cold-junction compensation interface. Use Value: 0.6 μVP-P (0.1–10 Hz) noise and 0.7 μV/°C drift enable ±0.5°C accuracy over 0–100°C without calibration. | Use Scenario: Building a 3-op-amp instrumentation amp for strain-gauge bridge readout in wireless structural health monitors. IC Role / Device Role / Timing Role: Dual-amplifier section providing matched gain and common-mode rejection. Use Value: Guaranteed 97 dB CMRR and <150 μV inter-amplifier offset match reduce bridge imbalance errors to <0.02% FS. |
| Remote Sensor Signal Conditioning | Lithium-Battery-Powered Data Logger |
Use Scenario: Signal conditioning for 4–20 mA loop-powered pressure transmitters with HART modulation. IC Role / Device Role / Timing Role: Precision I/V converter and filter driver operating from 3.3 V rail derived from loop supply. Use Value: 50 μA per amp supply current allows integration of four signal paths within 200 μA total budget. | Use Scenario: Front-end analog acquisition for a solar-powered soil moisture sensor logging every 15 minutes. IC Role / Device Role / Timing Role: Low-power sensor buffer, anti-alias filter, and ADC driver operating from 3.6 V Li-ion cell. Use Value: 2.2 V minimum supply and ground-swing output eliminate need for charge-pump rails, extending battery life to >5 years. |
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 |
|---|---|---|---|
| LT1079SW#TRPBF | Same die, commercial-grade (0°C to 70°C), 100–480 μV max VOS, 0.7–4.0 μV/°C drift | Lower cost; suitable for non-industrial environments where extended temperature range not required | Select when operating ambient stays within 0–70°C and long-term drift tolerance >0.7 μV/°C is acceptable |
| OP4177ARUZ | Higher precision (60 μV max VOS, 0.6 μV/°C drift), but 500 μA per amp supply current - 10× higher | Used in lab-grade equipment where noise and drift dominate over power; not viable for battery operation | Select only when ultra-low drift (<0.6 μV/°C) is mandatory and supply current >400 μA is acceptable |
Compared with LT1079SW#TRPBF, LT1079ISW#TRPBF provides guaranteed performance over –40°C to +85°C with tighter drift control, while OP4177ARUZ trades 10× higher supply current for marginally better DC specs - making LT1079ISW#TRPBF the optimal choice for industrial battery-powered systems demanding both precision and micropower operation.
Availability
LT1079ISW#TRPBF is available at Aetrix Electronics and suitable for remote sensor amplification, portable instrumentation, and lithium-battery-powered data loggers requiring stable component supply across extended temperature ranges and multi-year field deployments.
Supply support for LT1079ISW#TRPBF 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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The LT1079ISW#TRPBF belongs to ADI's legacy Linear Technology precision op amp product line, designed specifically for micropower, single-supply, high-accuracy signal conditioning in battery-constrained and harsh-environment applications.
FAQ
What is the maximum operating temperature range for the LT1079ISW#TRPBF?
The LT1079ISW#TRPBF is rated for operation from –40°C to +85°C (Industrial grade). This is explicitly confirmed in the Absolute Maximum Ratings table and Electrical Characteristics sections, where all "●"-denoted specs apply across this full range under 5V/0V supply conditions. Junction temperature must not exceed 110°C.
Does the LT1079ISW#TRPBF require external pull-down resistors to achieve ground-swing output?
No, the LT1079ISW#TRPBF does not require external pull-down resistors. Its all-NPN output stage sinks current to within ≤130 mV of ground at 100 μA load, as verified in the Electrical Characteristics table under "Maximum Output Voltage Swing (Output Low)" for the I-grade SW package. This eliminates power loss and board space associated with pull-down networks.
Can the LT1079ISW#TRPBF operate from a single 3.6 V lithium-ion cell?
Yes, the LT1079ISW#TRPBF supports minimum supply voltage of 2.2 V (per Electrical Characteristics, Note 5), making it fully compatible with 3.6 V nominal Li-ion cells across their discharge range (≈4.2 V to 2.7 V). Performance remains specified down to 2.2 V, though offset voltage may shift by ≤300 μV near the lower limit.
What is the typical 0.1 Hz to 10 Hz output voltage noise of the LT1079ISW#TRPBF?
The LT1079ISW#TRPBF exhibits 0.6 μVP-P typical input-referred voltage noise over 0.1 Hz to 10 Hz, as stated in the Features list and confirmed in the Electrical Characteristics table (TYP value for "Input Noise Voltage"). This low 1/f noise enables high-fidelity DC and low-frequency signal amplification in precision sensor interfaces.
Is the LT1079ISW#TRPBF pin-compatible with other LT1079 variants like LT1079CN or LT1079IN?
No, the LT1079ISW#TRPBF is not pin-compatible with LT1079CN (14-pin PDIP) or LT1079IN (14-pin CERDIP). It uses a 16-pin SOIC-Wide (SW) package with two NC pins (8 and 16) and different pin mapping - confirmed in the PACKAGE/ORDER INFORMATION diagram. Board layout must be specific to the SW footprint.
LT1079ISW#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 0.1V/µs
- Gain Bandwidth Product:
- 200 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 6 nA
- Voltage - Input Offset:
- 60 µV
- Current - Supply:
- 39µA (x4 Channels)
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.2 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
LT1079ISW#TRPBF FAQ
1.How can I place an order for LT1079ISW#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1079ISW#TRPBF 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 LT1079ISW#TRPBF reliable?
The price and inventory of LT1079ISW#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1079ISW#TRPBF is usually 5 days.
3.What payment methods are accepted for LT1079ISW#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1079ISW#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1079ISW#TRPBF?
LT1079ISW#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1079ISW#TRPBF 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 LT1079ISW#TRPBF?
For technical support, including LT1079ISW#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1079ISW#TRPBF requirements.
6.How does Aetrix verify that LT1079ISW#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT1079ISW#TRPBF 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 LT1079ISW#TRPBF meets industry standards.
7.What is the process for return or replacement of LT1079ISW#TRPBF?
All LT1079ISW#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1079ISW#TRPBF, 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 LT1079ISW#TRPBF part is unused and in its original packaging.
Return procedure for LT1079ISW#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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