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Analog Devices Inc. LT1078ISW#PBF
- Part No.:
- LT1078ISW#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
LT1078ISW#PBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,747
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Product details
Overview
LT1078ISW#PBF from Analog Devices (formerly Linear Technology) is a micropower dual precision operational amplifier in 16-lead plastic SO wide (SW) package, optimized for single-supply operation at 5V. It delivers 70μV max input offset voltage, 50μA max supply current per amplifier, 200kHz gain bandwidth, 0.07V/μs slew rate, and rail-to-ground output swing while sinking current-enabling battery-powered sensor amplifiers and portable instrumentation.
For engineers reviewing the LT1078ISW#PBF datasheet, LT1078ISW#PBF pinout, LT1078ISW#PBF application, or LT1078ISW#PBF equivalent, this page provides verified electrical specifications, thermal performance across –40°C to 85°C, single-supply input range including ground, low-frequency noise (0.6μVP-P, 0.1Hz–10Hz), and confirmed compatibility with lithium-cell and dual Ni-Cad power sources.
Technical Context
The LT1078ISW#PBF uses an all-NPN output stage enabling true ground-sinking capability without pull-down resistors, critical for micropower instrumentation amplifiers where competing op amps require >300μA bias current. Its 0.7Hz 1/f voltage noise corner is three times lower than monolithic alternatives, yielding superior low-frequency precision in thermocouple and RTD signal conditioning.
Input protection circuitry prevents phase reversal down to –1V common-mode input (vs. ground), and internal trimming ensures 70μV max VOS at 5V/0V supply-parameters explicitly validated for the ISW grade across –40°C to 85°C per datasheet Section 4 Electrical Characteristics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current per Amp | 43–60 μA at –40°C to 85°C - enables multi-year battery life in remote sensor nodes |
| Input Offset Voltage | 80–280 μV over temperature - supports <0.1°C accuracy in platinum RTD interfaces |
| Gain Bandwidth Product | 200 kHz - sufficient for 40Hz low-pass filtering with Q>30 in micropower anti-aliasing stages |
| Output Swing Low | ≤130 mV above ground at 100μA sink - eliminates need for external pull-down resistors |
| Voltage Noise (0.1–10Hz) | 0.6 μVP-P - 3× lower than prior micropower op amps, critical for sub-μV thermocouple signals |
| Common-Mode Range | Extends 0.3V below ground - allows direct interfacing with transducers operating below reference |
| Offset Drift | 0.4–3.5 μV/°C - stable baseline for unattended environmental monitoring over seasonal temperature swings |
Pinout & Package
Package: 16-lead plastic SO wide (SW), 7.6mm × 10.3mm body, 1.27mm pitch, JEDEC MS-013AC compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives loads to ground without external components |
| 2 | –IN A | Inverting input of Amp A - protected against phase reversal to –1V |
| 3 | +IN A | Non-inverting input of Amp A - high CMRR (92–106 dB) rejects supply ripple |
| 4 | V+ | Positive supply rail - operates down to 2.2V, compatible with single lithium cell |
| 5 | +IN B | Non-inverting input of Amp B - matched to +IN A for differential applications |
| 6 | –IN B | Inverting input of Amp B - low input bias current (7–10 nA) minimizes resistor errors |
| 7 | OUT B | Amplifier B output - independent sourcing/sinking up to ±5mA |
| 8 | NC | No connect - not internally bonded; must be left floating |
| 9 | OUT D | Amplifier D output - unused in dual LT1078; reserved for quad LT1079 SW variant |
| 10 | –IN D | Inverting input of Amp D - unused in LT1078ISW#PBF |
| 11 | +IN D | Non-inverting input of Amp D - unused in LT1078ISW#PBF |
| 12 | V– | Negative supply rail - tied to ground in single-supply configurations |
| 13 | +IN C | Non-inverting input of Amp C - unused in LT1078ISW#PBF |
| 14 | –IN C | Inverting input of Amp C - unused in LT1078ISW#PBF |
| 15 | OUT C | Amplifier C output - unused in LT1078ISW#PBF |
| 16 | NC | No connect - not internally bonded; must be left floating |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-ground output sink | Outputs swing within 130mV of ground while sinking 100μA - eliminates power-wasting pull-down resistors in battery systems |
| Sub-1Hz 1/f noise corner | 0.7Hz voltage noise corner - enables stable DC-coupled amplification of thermocouple outputs without 1/f drift corruption |
| Phase reversal immunity | Operates correctly with inputs as low as –1V - prevents lockup in servo loops during transients or cold-junction compensation errors |
| Single-lithium-cell operation | Functional down to 2.2V supply - supports >10-year deployment in sealed IoT sensor nodes using CR2032 cells |
| Matched dual architecture | ΔVOS ≤110μV (98% yield) between amplifiers - enables high-accuracy instrumentation amplifiers without external trimming |
Applications
| Thermocouple Amplifier | Remote Sensor Signal Conditioning |
|---|---|
Use Scenario: Amplifying microvolt-level J-type thermocouple outputs in industrial furnace monitoring cabinets with ambient temperatures from –20°C to 70°C. IC Role / Device Role / Timing Role: Precision dual op amp providing cold-junction compensation, gain of 100, and 0.1Hz–10Hz noise filtering. Use Value: 0.6μVP-P low-frequency noise and 0.4μV/°C offset drift ensure <0.15°C measurement uncertainty over full operating range. | Use Scenario: Signal conditioning for MEMS pressure sensors in wireless agricultural soil moisture nodes powered by two AA Ni-Cad cells. IC Role / Device Role / Timing Role: Dual amplifier implementing ratiometric excitation and differential amplification with single-supply rail-to-ground output. Use Value: 50μA per amplifier supply current extends battery life to >5 years; input range including ground accommodates sensor offset calibration. |
| Portable ECG Front-End | Lithium-Battery Voltage Monitor |
Use Scenario: Biopotential amplification in handheld ECG devices requiring ultra-low power and DC-coupled baseline stability. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier with picoampere input bias and 0.1Hz–10Hz noise optimization. Use Value: 2.3pAP-P current noise and 0.07V/μs slew rate preserve ST-segment morphology without aliasing or distortion. | Use Scenario: Precision low-battery detection in medical wearables using CR2032 coin cells, triggering shutdown before voltage collapse. IC Role / Device Role / Timing Role: Comparator with TTL-compatible output, leveraging rail-to-ground swing and 70μV offset for 2.7V threshold accuracy. Use Value: No external hysteresis or pull-ups needed; 43–60μA supply current avoids loading the battery during monitoring. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1078S8#PBF | 8-pin SO package; same electrical specs but different pinout (industry-standard LT1013DS8 configuration); 180μV max VOS in SO package | Requires PCB layout change due to non-identical pin mapping; suitable only when space-constrained 8-pin footprint is mandatory | Select LT1078S8#PBF only if board area is critical and pinout redesign is acceptable |
| AD8602ARZ | Higher supply current (120μA vs 60μA); lower offset (60μV typ); no guaranteed phase reversal immunity below ground | Better DC precision but incompatible with –1V input transients; unsuitable for thermocouple cold-junction circuits with large offsets | Choose AD8602ARZ only for AC-coupled, higher-speed applications where micropower is secondary |
Compared with LT1078S8#PBF, LT1078ISW#PBF offers guaranteed –40°C to 85°C operation and SW-package thermal performance, while AD8602ARZ trades 2× supply current for marginally better offset-but lacks the robust input protection and ground-sinking architecture essential for battery-powered sensor front-ends.
Availability
LT1078ISW#PBF is available at Aetrix Electronics and suitable for remote sensor amplifiers, portable medical instrumentation, and satellite telemetry systems requiring stable component supply with long-term lifecycle assurance.
Supply support for LT1078ISW#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, Inc. (acquired Linear Technology in 2017) designs high-performance analog, mixed-signal, and digital signal processing ICs for precision measurement and power management.
The LT1078 product line was engineered specifically for micropower, single-supply precision amplification in battery-constrained environments-emphasizing rail-to-ground output, ultra-low noise, and input robustness without sacrificing DC accuracy.
FAQ
What is the maximum operating temperature range for the LT1078ISW#PBF?
The LT1078ISW#PBF is rated for operation from –40°C to +85°C, as confirmed in the Absolute Maximum Ratings table and Electrical Characteristics sections of the official datasheet. This I-grade specification applies across all tested parameters including input offset voltage (80–280 μV), supply current (43–60 μA), and output swing (≤130 mV above ground at 100μA sink).
Does the LT1078ISW#PBF support true single-supply operation with input voltages below ground?
Yes, the LT1078ISW#PBF supports true single-supply operation with input common-mode voltage extending to at least –0.3V below ground (V–), and its unique input protection circuitry prevents phase reversal even when inputs reach –1V-verified in Figure 2 of the datasheet. This enables direct interfacing with transducers exhibiting negative offsets without external clamping.
Can the LT1078ISW#PBF drive a 2kΩ load to ground while maintaining linearity?
Yes, the LT1078ISW#PBF sinks 100μA while holding output voltage ≤130 mV above ground (per Electrical Characteristics Table, Section 4), and drives 2kΩ to ground with ≤1.0 mV saturation voltage (Section 3). Its all-NPN output stage maintains linearity under these conditions without pull-down resistors-critical for micropower sensor interfaces.
What is the 0.1Hz to 10Hz voltage noise specification for the LT1078ISW#PBF?
The LT1078ISW#PBF has a guaranteed 0.6 μVP-P voltage noise over 0.1Hz to 10Hz, as specified in the Features list and confirmed in Electrical Characteristics Tables (Sections 3 and 4). This value is measured at VS = ±2.5V, VO = 0V, and represents the dominant noise contribution in DC-coupled precision applications like thermocouple amplification.
Is the LT1078ISW#PBF pin-compatible with other LT1078 variants such as the LT1078S8#PBF?
No, the LT1078ISW#PBF is not pin-compatible with the LT1078S8#PBF. The SW package follows the industry-standard 16-pin wide SO layout (matching LT1079SW), while the S8 package uses an 8-pin SO footprint with LT1013DS8 pinout. Pin mapping differs entirely-requiring separate PCB layouts for each variant.
LT1078ISW#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 0.1V/µs
- Gain Bandwidth Product:
- 200 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 6 nA
- Voltage - Input Offset:
- 70 µV
- Current - Supply:
- 47µA (x2 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
LT1078ISW#PBF FAQ
1.How can I place an order for LT1078ISW#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1078ISW#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 LT1078ISW#PBF reliable?
The price and inventory of LT1078ISW#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1078ISW#PBF is usually 5 days.
3.What payment methods are accepted for LT1078ISW#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1078ISW#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1078ISW#PBF?
LT1078ISW#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1078ISW#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 LT1078ISW#PBF?
For technical support, including LT1078ISW#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1078ISW#PBF requirements.
6.How does Aetrix verify that LT1078ISW#PBF is sourced from the original manufacturer or authorized distributors?
All LT1078ISW#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 LT1078ISW#PBF meets industry standards.
7.What is the process for return or replacement of LT1078ISW#PBF?
All LT1078ISW#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1078ISW#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 LT1078ISW#PBF part is unused and in its original packaging.
Return procedure for LT1078ISW#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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