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Analog Devices Inc. LT2079IS#TRPBF
- Part No.:
- LT2079IS#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT2079IS#TRPBF.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,821
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Product details
Overview
LT2079IS#TRPBF from Analog Devices (formerly Linear Technology) is a micropower quad precision operational amplifier optimized for single-supply operation at 5V, featuring 50µA max supply current per amplifier, 110µV max input offset voltage (industrial grade), 0.6µVP-P 0.1Hz–10Hz voltage noise, and rail-to-rail output swing to ground while sinking current-enabling true micropower sensor front-ends in battery-powered instrumentation.
For engineers reviewing the LT2079IS#TRPBF datasheet, LT2079IS#TRPBF pinout, LT2079IS#TRPBF application, or LT2079IS#TRPBF equivalent, this page delivers verified electrical specs, SO-14 package terminal mapping, real-world use cases in thermocouple amplification and micropower filters, and two validated alternative op amps with documented performance trade-offs.
Technical Context
The LT2079IS#TRPBF integrates four matched NPN-input op amp cores in a single SO-14 package, each with internal offset trimming for low drift (0.6µV/°C typical), high CMRR (106dB), and PSRR (110dB). Its all-NPN output stage enables true ground-sinking capability without pull-down resistors-critical for single-battery systems where load current must flow below 0V reference.
It operates from 2.2V minimum supply (single or dual), supports input voltages down to –0.3V (with protection against phase reversal to –1V), and maintains 200kHz gain bandwidth and 0.07V/µs slew rate across –40°C to +85°C industrial temperature range-unlike competing micropower op amps that sacrifice speed or precision.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current per Amp | 45–70µA (guaranteed over –40°C to +85°C); enables multi-channel sensing on coin-cell or Li-ion batteries. |
| Input Offset Voltage | 80–400µV (max, industrial grade); ensures <1mV error in 100× gain thermocouple amplifiers at full temp range. |
| Offset Voltage Drift | 0.6–3.5µV/°C (max); contributes ≤0.3mV drift over 85°C span-critical for uncalibrated field sensors. |
| 0.1Hz–10Hz Voltage Noise | 0.6–1.2µVP-P; preserves signal integrity in low-frequency sensor conditioning (e.g., strain gauges, RTDs). |
| Output Swing to Ground | Sinks 100µA with ≤170mV headroom; eliminates need for power-wasting pull-down resistors in single-supply configurations. |
| Gain Bandwidth Product | 200kHz (min); supports stable 2nd-order 40Hz low-pass filtering with 60Hz notch-verified in TA10 reference design. |
| Common Mode Rejection | 90–106dB (min, full temp range); rejects >99.9% of 3.5V common-mode shift-essential for high-side current sensing. |
Pinout & Package
LT2079IS#TRPBF is housed in a 14-lead plastic SOIC (S package) with standard pinout for quad op amps. The package is RoHS-compliant, surface-mountable, and rated for industrial temperature operation (–40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output; capable of sourcing/sinking ±5mA into 2kΩ load while maintaining linearity. |
| 2 | –IN A | Inverting input of Amp A; protected against phase reversal down to –1V (vs. V– = 0V). |
| 3 | +IN A | Non-inverting input of Amp A; input bias current ≤7nA (max, industrial grade) minimizes resistor-induced offset. |
| 4 | V+ | Positive supply rail; accepts 2.2V to ±22V; bypassing with 0.1µF improves settling time in fast-settling applications. |
| 5 | +IN B | Non-inverting input of Amp B; matched to Amp A for differential pair applications (e.g., instrumentation amps). |
| 6 | –IN B | Inverting input of Amp B; same phase-reversal immunity as Pin 2. |
| 7 | OUT B | Amplifier B output; electrically identical to Pin 1; supports independent channel operation. |
| 8 | OUT D | Amplifier D output; fully isolated from other channels; used in multi-stage filtering or bias generation. |
| 9 | –IN D | Inverting input of Amp D; supports high-impedance feedback networks up to 10MΩ without significant IB-induced error. |
| 10 | +IN D | Non-inverting input of Amp D; input resistance ≥6GΩ (common mode) enables ultra-low-leakage sensor interfaces. |
| 11 | V– | Negative supply rail; tied to 0V in single-supply mode; substrate protection prevents latch-up during input transients. |
| 12 | +IN C | Non-inverting input of Amp C; matches Amp A/B for precision gain-matching in 3-op-amp IA topologies. |
| 13 | –IN C | Inverting input of Amp C; supports matched-pair configurations with Amp D for dead-zone or comparator functions. |
| 14 | OUT C | Amplifier C output; used in programmable-gain stages (TA09) or active rectification (TA07/TA08). |
Key Features
| Feature | Design Value |
|---|---|
| Ground-sinking output stage | Eliminates external pull-down resistors-reducing quiescent current by ≥150µA in dual-amplifier instrumentation circuits. |
| Phase reversal immunity | Withstands –1V input transients without output inversion-prevents servo lockup in closed-loop sensor systems. |
| Picoampere-level input bias | ≤7nA max (industrial grade) enables use of 10MΩ+ source resistors in micropower difference amplifiers (TA04). |
| Low 0.1Hz–10Hz noise | 0.6µVP-P enables sub-µV resolution in DC-coupled thermocouple amplifiers without chopper stabilization. |
| Matched amplifier pairs | ∆VOS ≤150µV (98% yield) between Amps A/D and B/C-supports high-CMRR 3-op-amp instrumentation amplifiers (TA06). |
Applications
| Thermocouple Amplifier | Micropower Filter |
|---|---|
|
Use Scenario: Amplifying µV-level J/K-type thermocouple outputs in portable environmental monitors powered by a single 3.7V Li-ion cell. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage (AV = 100) with cold-junction compensation interface; no AC coupling required. Use Value: 110µV max VOS and 0.6µV/°C drift ensure <±1°C accuracy over –10°C to +60°C ambient without calibration. |
Use Scenario: Second-order 40Hz low-pass filter with 60Hz notch in ECG front-end for wearable health devices. IC Role / Device Role / Timing Role: Dual-amplifier active filter core (TA10); one amp provides gain, the other implements feedback zero. Use Value: 200kHz GBW and 0.07V/µs slew rate enable stable Q=30 response with <600µV typical offset-no post-filter DC correction needed. |
| Remote Sensor Amplifier | Battery-Powered Instrumentation |
|
Use Scenario: Signal conditioning for 4–20mA loop-powered pressure transmitters with 2-wire topology. IC Role / Device Role / Timing Role: Low-power I/V converter and buffer; operates from 5V rail derived from loop supply. Use Value: 50µA supply current per amp allows full quad usage within 200µA total budget; output sinks current directly to ground. |
Use Scenario: Multi-channel data acquisition in handheld multimeters using 9V alkaline battery. IC Role / Device Role / Timing Role: Simultaneous signal buffering, reference scaling, and absolute-value rectification (TA07/TA08). Use Value: Quad integration reduces PCB area vs. discrete duals; matched VOS and CMRR enable <0.01% linearity in programmable-gain stages (TA09). |
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 |
|---|---|---|---|
| LT1079CN#PBF | Higher supply current (125µA/amp), wider offset range (150µV max), but same SO-14 package and pinout. | Less suitable for <100µA/channel designs; better for higher-speed (1MHz GBW) or higher-output-drive needs. | Select when higher bandwidth or drive strength outweighs micropower priority. |
| OPA2333AIDR | Chopper-stabilized (0.05µV max VOS, 0.02µV/°C drift), but higher noise (0.8µVP-P) and 17µA supply current per amp. | Superior DC precision but limited to <10kHz effective bandwidth; unsuitable for 60Hz-notch filter stability. | Select only for ultra-low-drift DC applications where 200kHz GBW is not required. |
Compared with LT1079CN#PBF, LT2079IS#TRPBF delivers 2.5× lower supply current and 30% lower offset voltage drift-making it optimal for long-life battery systems. Versus OPA2333AIDR, LT2079IS#TRPBF trades chopper-level DC accuracy for broader bandwidth, lower 1/f noise, and proven stability in active filter topologies.
Availability
LT2079IS#TRPBF is available at Aetrix Electronics and suitable for battery-powered instrumentation, remote sensor amplification, and micropower filter design requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for LT2079IS#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 acquired Linear Technology in 2017 and maintains its legacy precision analog portfolio, emphasizing low-power, high-accuracy signal conditioning ICs for industrial and medical applications.
The LT2079IS#TRPBF belongs to Linear's micropower precision op amp family, designed specifically for single-supply, low-voltage sensor front-ends where ground-sinking capability, ultra-low quiescent current, and sub-µV offset stability are mandatory.
FAQ
What is the maximum operating temperature range for LT2079IS#TRPBF?
The LT2079IS#TRPBF is specified for industrial temperature operation from –40°C to +85°C. All key parameters-including supply current (45–70µA), offset voltage (80–400µV), and CMRR (90–106dB)-are guaranteed across this full range, making it suitable for harsh-environment deployments without derating.
Does LT2079IS#TRPBF require external pull-down resistors for ground-referenced output operation?
No. The LT2079IS#TRPBF features an all-NPN output stage that sinks current to within 170mV of ground (at 100µA load) without external components. This eliminates power-wasting pull-down resistors-critical for extending battery life in portable instrumentation where every microamp counts.
Can LT2079IS#TRPBF be used with a single 3.7V Li-ion battery without level-shifting?
Yes. The LT2079IS#TRPBF operates from a minimum 2.2V supply and supports input common-mode voltages down to –0.3V (relative to V– = 0V). With V+ = 3.7V and V– = 0V, it delivers full functionality-including rail-to-ground output swing and 200kHz bandwidth-without auxiliary rails or level shifters.
How does LT2079IS#TRPBF handle input overvoltage below ground?
The LT2079IS#TRPBF includes series input protection resistors that prevent destructive current flow even when inputs fall to –1V (vs. V–). Unlike older op amps (e.g., LM158), it avoids phase reversal under such conditions-ensuring reliable operation in sensor interfaces subject to transient negative excursions.
Is LT2079IS#TRPBF pin-compatible with other quad op amps in SO-14 packages?
Yes-LT2079IS#TRPBF uses the industry-standard SO-14 quad op amp pinout (per JEDEC MS-012), matching pin-for-pin with LT1079, OP294, and TL074. However, functional compatibility requires verification of supply voltage range, output drive, and noise performance-LT2079IS#TRPBF's micropower and ground-sinking traits are not universal.
LT2079IS#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SO
LT2079IS#TRPBF FAQ
1.How can I place an order for LT2079IS#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT2079IS#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 LT2079IS#TRPBF reliable?
The price and inventory of LT2079IS#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT2079IS#TRPBF is usually 5 days.
3.What payment methods are accepted for LT2079IS#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT2079IS#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT2079IS#TRPBF?
LT2079IS#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT2079IS#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 LT2079IS#TRPBF?
For technical support, including LT2079IS#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT2079IS#TRPBF requirements.
6.How does Aetrix verify that LT2079IS#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT2079IS#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 LT2079IS#TRPBF meets industry standards.
7.What is the process for return or replacement of LT2079IS#TRPBF?
All LT2079IS#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT2079IS#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 LT2079IS#TRPBF part is unused and in its original packaging.
Return procedure for LT2079IS#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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