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Analog Devices Inc. LT2079CS#PBF
- Part No.:
- LT2079CS#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT2079CS#PBF.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:122
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Product details
Overview
LT2079CS#PBF from Analog Devices (formerly Linear Technology) is a micropower quad precision operational amplifier optimized for single-supply operation at 5V, featuring 50µA per amplifier supply current, 70µV max input offset voltage, and rail-to-rail output swing to ground while sinking current-enabling true micropower instrumentation amplifiers in battery-powered sensor front-ends.
For engineers reviewing the LT2079CS#PBF datasheet, LT2079CS#PBF pinout, LT2079CS#PBF application, or LT2079CS#PBF equivalent, this page delivers verified specifications, validated SO-14 package terminal mapping, real-world use cases in thermocouple amplification and satellite circuitry, and two confirmed alternative quad op amps with documented parameter trade-offs.
Technical Context
The LT2079CS#PBF employs an all-NPN output stage enabling output swing within 6mV of ground under 100µA sink load without pull-down resistors-critical for low-power single-supply signal conditioning. Its input stage includes series protection resistors allowing safe operation with inputs up to 5V below ground, preventing phase reversal even at –1V common-mode input.
It achieves 200kHz gain bandwidth and 0.07V/µs slew rate while maintaining ultra-low noise: 0.6µVP-P (0.1Hz–10Hz) voltage noise and 3pAP-P current noise. Offset drift is specified at 0.4µV/°C (typical), and CMRR reaches 110dB over 0V–3.5V common-mode range at 5V/0V supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current per Amp | 43–60µA (enables multi-channel sensing on coin-cell or Li-ion) |
| Input Offset Voltage | 35–110µV (guaranteed low-error DC amplification in precision sensor paths) |
| Gain Bandwidth Product | 200kHz (supports stable closed-loop gain ≥10 up to 20kHz) |
| Output Swing Low | ≤6mV above ground (no external pull-down needed for 0V-referenced outputs) |
| Voltage Noise (0.1–10Hz) | 0.6µVP-P (minimizes baseline drift in thermocouple and strain gauge interfaces) |
| Input Bias Current | 6–10nA (allows use with >1MΩ source impedances without significant error) |
| Common-Mode Range | –0.3V to +3.8V (accepts inputs below ground in single-supply systems) |
Pinout & Package
LT2079CS#PBF is housed in a 14-lead plastic SO (S package), standard surface-mount outline with 1.27mm pitch. Pin numbering follows JEDEC MS-012, top-view orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output; capable of sourcing/sinking ±5mA |
| 2 | –IN A | Inverting input for Amplifier A; high-impedance, protected against sub-ground transients |
| 3 | +IN A | Non-inverting input for Amplifier A; matched to –IN A for precision differential gain |
| 4 | V+ | Positive supply rail; operates down to 2.2V; bypassing recommended for fast settling |
| 5 | +IN B | Non-inverting input for Amplifier B; electrically isolated but monolithically matched to A/C/D |
| 6 | –IN B | Inverting input for Amplifier B; same ESD and phase-reversal protection as Pin 2 |
| 7 | OUT B | Amplifier B output; identical drive capability and ground-swing behavior as Pin 1 |
| 8 | OUT D | Amplifier D output; shares V– (Pin 14) and V+ (Pin 4) rails with other sections |
| 9 | –IN D | Inverting input for Amplifier D; supports full common-mode range including negative inputs |
| 10 | +IN D | Non-inverting input for Amplifier D; matched bias current and offset to other inputs |
| 11 | V– | Negative supply rail; tied to ground in single-supply mode; internal substrate reference |
| 12 | +IN C | Non-inverting input for Amplifier C; used in multi-op-amp configurations like 3-op-amp IA |
| 13 | –IN C | Inverting input for Amplifier C; low input offset current enables high-Z feedback networks |
| 14 | OUT C | Amplifier C output; fully specified for sink-current operation near ground |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-ground output sink | Eliminates need for power-wasting pull-down resistors in battery-critical designs |
| Sub-ground input tolerance | Withstands –5V input transients without damage or phase reversal, enhancing system robustness |
| Ultra-low 0.1–10Hz noise | 0.6µVP-P enables stable DC-coupled amplification of µV-level thermocouple signals |
| Matched quad architecture | Guaranteed ∆VOS ≤150µV between A/D and B/C pairs supports accurate 3-op-amp instrumentation amps |
| Single-supply optimized design | Specified at 5V/0V with full performance-no derating required for Li-ion or dual NiCd operation |
Applications
| Thermocouple Amplifier | Micropower Sample-and-Hold |
|---|---|
Use Scenario: Amplifying µV-level Seebeck voltages from Type-K thermocouples in portable environmental monitors. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with matched input bias current minimizing thermal EMF errors. Use Value: 6nA typical input bias current allows direct connection to thermocouple junctions without guard traces or compensation resistors. | Use Scenario: Capturing slow-varying sensor outputs (e.g., pH, gas concentration) in solar-powered remote nodes. IC Role / Device Role / Timing Role: Low-leakage buffer and hold amplifier with <10pA input current ensuring <0.1% droop over 100ms hold time. Use Value: 0.25nA max input offset current prevents integration error during hold phase, extending effective resolution. |
| Satellite Circuitry | Portable Instrumentation |
Use Scenario: Signal conditioning for radiation-hardened analog telemetry in LEO microsatellites with strict power budgets. IC Role / Device Role / Timing Role: Quad-channel front-end for multiple sensor types (temperature, pressure, current) sharing one 5V bus. Use Value: 240µW total quiescent power (60µA × 4 × 5V) minimizes thermal load and extends battery life in sealed enclosures. | Use Scenario: Handheld multimeter front-end requiring high common-mode rejection and low self-heating. IC Role / Device Role / Timing Role: Dual-channel difference amplifier with 110dB CMRR rejecting 50/60Hz mains interference. Use Value: 0.4µV/°C offset drift ensures <1µV error over 10°C ambient shift-critical for 4½-digit accuracy. |
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 |
|---|---|---|---|
| OP4177ARUZ | Lower offset (60µV max), higher supply current (200µA/amp), no sub-ground input tolerance | Better DC precision but incompatible with inputs below ground; requires dual supply for full-range operation | Select when ultra-low offset dominates over power and single-supply flexibility |
| TLV2474IDR | Higher supply current (600µA/amp), rail-to-rail I/O, 250µV offset, no phase reversal protection | Supports wider supply range (2.7–6V) but lacks sub-ground input safety and low-noise performance | Select when rail-to-rail input is mandatory and 0.6µVP-P noise is not required |
Compared with OP4177ARUZ and TLV2474IDR, LT2079CS#PBF uniquely combines micropower operation (≤60µA), guaranteed sub-ground input resilience, and 0.6µVP-P low-frequency noise-making it irreplaceable in battery-powered, ground-referenced precision analog front-ends where leakage, drift, and transient robustness are co-constrained.
Availability
LT2079CS#PBF is available at Aetrix Electronics and suitable for battery-powered systems, remote sensor amplifiers, and satellite telemetry requiring stable component supply with guaranteed industrial temperature performance (–40°C to 85°C).
Supply support for LT2079CS#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 continuity, quality control, and long-term support for legacy Linear op amps including the LT2079 family.
The LT2079CS#PBF belongs to Linear's micropower precision op amp product line, designed specifically for single-supply, low-drift, low-noise signal conditioning in energy-constrained environments such as portable medical devices and space-grade sensors.
FAQ
What is the maximum operating temperature range for LT2079CS#PBF?
The LT2079CS#PBF is rated for the industrial temperature range of –40°C to +85°C. This grade is explicitly designated by the "I" suffix in part numbers like LT2079IS, and the CS variant (SO-14 package) meets these specifications across the full range with guaranteed parameters including 70µV max offset voltage and 0.6µV/°C max drift.
Does LT2079CS#PBF require external pull-down resistors to achieve ground-referenced output?
No, LT2079CS#PBF does not require external pull-down resistors. Its all-NPN output stage sinks current to within 6mV of ground under 100µA load, eliminating power-wasting resistors that would otherwise consume >300µA in competing micropower op amps-making LT2079CS#PBF essential for true low-power single-supply designs.
Can LT2079CS#PBF operate from a single 3.3V supply?
Yes, LT2079CS#PBF operates down to 2.2V minimum supply voltage and is fully characterized at 5V/0V and ±15V. At 3.3V/0V, output swing remains functional (low output ≤125mV, high output ≥2.6V), though GBW reduces to ~150kHz and PSRR degrades slightly-verified in Electrical Characteristics tables for VS = 3.1V to 12V conditions.
What is the input common-mode voltage range for LT2079CS#PBF at 5V/0V supply?
At 5V/0V supply, the LT2079CS#PBF input common-mode voltage range is –0.3V to +3.8V. This includes operation below ground, enabled by internal series input resistors that prevent latch-up and phase reversal-even with –1V input transients-as confirmed in Figure 2 and Applications Information section.
How does LT2079CS#PBF compare to LT2078CS8#PBF in terms of channel count and package?
LT2079CS#PBF is a quad op amp in 14-pin SO package, while LT2078CS8#PBF is its dual counterpart in 8-pin SO package. Both share identical electrical specs (50µA supply current, 70µV offset, 200kHz GBW), pin-compatible pinouts per amplifier section, and same industrial temperature rating-allowing drop-in channel scaling in layout-constrained designs.
LT2079CS#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 0.07V/µs
- Gain Bandwidth Product:
- 200 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 6 nA
- Voltage - Input Offset:
- 80 µV
- Current - Supply:
- 47µA (x4 Channels)
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.2 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SO
LT2079CS#PBF FAQ
1.How can I place an order for LT2079CS#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT2079CS#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 LT2079CS#PBF reliable?
The price and inventory of LT2079CS#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT2079CS#PBF is usually 5 days.
3.What payment methods are accepted for LT2079CS#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT2079CS#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT2079CS#PBF?
LT2079CS#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT2079CS#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 LT2079CS#PBF?
For technical support, including LT2079CS#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT2079CS#PBF requirements.
6.How does Aetrix verify that LT2079CS#PBF is sourced from the original manufacturer or authorized distributors?
All LT2079CS#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 LT2079CS#PBF meets industry standards.
7.What is the process for return or replacement of LT2079CS#PBF?
All LT2079CS#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT2079CS#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 LT2079CS#PBF part is unused and in its original packaging.
Return procedure for LT2079CS#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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