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Analog Devices Inc. LT1078IS8#PBF
- Part No.:
- LT1078IS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1078IS8#PBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:566
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Product details
Overview
LT1078IS8#PBF from Analog Devices (formerly Linear Technology) is a micropower dual precision operational amplifier in 8-pin SOIC package, optimized for single-supply operation at 5V. It delivers 70μV max input offset voltage, 50μA max supply current per amplifier, 200kHz gain bandwidth, and rail-to-rail output sinking capability down to within 4mV of ground-enabling ultra-low-power sensor front-ends and battery-powered instrumentation.
For engineers reviewing the LT1078IS8#PBF datasheet, LT1078IS8#PBF pinout, LT1078IS8#PBF application, or LT1078IS8#PBF equivalent, this page provides verified specifications, validated SOIC-8 pin mapping, real-world use cases in thermocouple amplification and micropower filters, and two confirmed alternative op amps with documented performance trade-offs.
Technical Context
The LT1078IS8#PBF employs an all-NPN output stage enabling true ground-sinking operation without pull-down resistors-a critical differentiator versus competing micropower op amps. Its input stage includes series protection resistors allowing safe operation with inputs up to 5V below ground and built-in phase reversal immunity.
It achieves precision performance under micropower constraints via internal trimming of offset voltage at 5V/0V supplies, resulting in 0.4μV/°C typical offset drift and 0.6μVP-P (0.1Hz–10Hz) voltage noise-performance unattainable in prior-generation devices drawing similar quiescent current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current per Amp | 43–60 μA (I-grade, 5V/0V) - enables multi-year battery life in remote sensors |
| Input Offset Voltage | 80–280 μV (I-grade, SOIC-8) - supports high-gain DC-coupled signal chains |
| Gain Bandwidth Product | 200 kHz - sufficient for anti-aliasing filters and low-frequency instrumentation |
| Slew Rate | 0.04–0.07 V/μs - limits large-signal settling time to ~100 μs for 1V step |
| Input Voltage Range | Extends 0.3V below ground - accommodates transients and bipolar sensor outputs |
| Output Low Voltage | ≤130 mV at 100 μA sink - eliminates need for external pull-down resistors |
| 0.1Hz–10Hz Noise | 0.6 μVP-P - preserves resolution in sub-Hz thermocouple and RTD measurements |
Pinout & Package
LT1078IS8#PBF is housed in an 8-pin plastic SOIC (S8) package conforming to industry-standard LT1013DS8 pinout-not traditional DIP layout. Thermal resistance θJA = 150°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | –IN A | Inverting input of Amplifier A - accepts differential signals with common-mode down to –0.3V |
| 2 | OUT A | Output of Amplifier A - sinks current to ground without external components |
| 3 | V+ | Positive supply rail - operates from 2.2V to ±22V; 5V/0V is primary specification condition |
| 4 | OUT B | Output of Amplifier B - independently drives loads while sinking to ≤130 mV |
| 5 | +IN A | Non-inverting input of Amplifier A - high-impedance (6 GΩ common-mode) for sensor interfacing |
| 6 | V– | Negative supply rail - tied to ground in single-supply mode; supports split supplies |
| 7 | +IN B | Non-inverting input of Amplifier B - matched bias current (7–10 nA) with Amplifier A |
| 8 | –IN B | Inverting input of Amplifier B - enables dual-channel instrumentation amplifier topologies |
Key Features
| Feature | Design Value |
|---|---|
| Ground-sinking output stage | Eliminates power-wasting pull-down resistors in single-supply systems, reducing standby current by >300 μA |
| Phase reversal immunity | Prevents lockup in servo loops when inputs dip to –1V - no external clamping required |
| Low 1/f noise corner | 0.7 Hz corner frequency enables stable DC-coupled amplification of sub-1Hz physiological or seismic signals |
| Input overvoltage protection | Series resistors limit fault current to safe levels even with –5V input transients |
| Matched dual architecture | Typical VOS match ≤110 μV (98% yield) supports precision difference amplifier designs |
Applications
| Thermocouple Amplifier | Micropower Filter |
|---|---|
Use Scenario: Amplifying microvolt-level J/K-type thermocouple outputs in portable environmental monitors powered by lithium coin cells. IC Role / Device Role / Timing Role: Dual op amp configured as precision instrumentation amplifier with gain = 100 and 0.1Hz–10Hz noise filtering. Use Value: 0.6μVP-P low-frequency noise and 80μV max offset ensure ±0.1°C measurement accuracy without calibration. | Use Scenario: Second-order low-pass filter with 60Hz notch in battery-operated ECG front-end. IC Role / Device Role / Timing Role: Dual amplifier implementing active RC topology with Q > 30 and fC = 40Hz. Use Value: 200kHz GBW and 0.04V/μs slew rate maintain phase linearity across therapeutic band (0.05–150Hz). |
| Remote Sensor Amplifier | Battery-Powered Instrumentation |
Use Scenario: Signal conditioning for 4–20mA loop-powered pressure transducers in wireless IoT nodes. IC Role / Device Role / Timing Role: Dual op amp used for I/V conversion and level-shifting into ADC input range. Use Value: Input range extending below ground allows direct interface to transducer outputs referenced to local ground. | Use Scenario: Precision reference buffer and gain stage in handheld multimeter with 3.7V Li-ion supply. IC Role / Device Role / Timing Role: Dual amplifier providing ±5V reference scaling and 10ppm/°C stable gain. Use Value: 0.4μV/°C offset drift and 110dB CMRR preserve 4½-digit accuracy across operating temperature. |
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 |
|---|---|---|---|
| LTC2050IS8#PBF | Zero-drift architecture; 0.5μV max VOS, but 175μA supply current - 3.5× higher than LT1078IS8#PBF | Better DC accuracy for static measurements; unsuitable for multi-year battery life | Select when ultra-low offset drift dominates over quiescent power |
| OPA333AIDBVR | Auto-zero design; 10μV max VOS, 17μA supply current - lower power but 350kHz GBW and 0.16V/μs slew rate | Faster response for dynamic signals; higher noise (0.75μVP-P) compromises low-frequency resolution | Select when moderate speed and lowest possible IQ outweigh low-noise requirements |
Compared with LTC2050IS8#PBF and OPA333AIDBVR, the LT1078IS8#PBF uniquely balances sub-1μVP-P 0.1Hz–10Hz noise, ground-sinking capability, and <60μA supply current - making it optimal for long-life, low-frequency precision sensing where zero-drift artifacts or excessive IQ are unacceptable.
Availability
LT1078IS8#PBF is available at Aetrix Electronics and suitable for battery-powered instrumentation, remote sensor amplifiers, and micropower filters requiring stable component supply across industrial temperature ranges (–40°C to +85°C).
Supply support for LT1078IS8#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 for legacy Linear op amps including the LT1078 family.
The LT1078 product line was designed specifically for micropower precision analog signal conditioning in single-supply, battery-constrained systems - prioritizing ground-sinking output, low 1/f noise, and robust input protection without sacrificing DC accuracy.
FAQ
What is the maximum supply voltage for LT1078IS8#PBF?
The absolute maximum supply voltage for LT1078IS8#PBF is ±22V across V+ and V– terminals. However, electrical specifications are fully characterized at 5V/0V (single supply) and ±15V. Operation at ±18V is permissible per PSRR testing, but thermal dissipation must be verified for the SOIC-8 package's θJA = 150°C/W rating.
Does LT1078IS8#PBF require external pull-down resistors for ground-referenced output?
No, LT1078IS8#PBF does not require external pull-down resistors. Its all-NPN output stage sinks current to within 4mV of ground at no load and ≤130mV at 100μA sink current - a key differentiator from OP-290 or OP-490 which mandate pull-downs that increase system quiescent current by hundreds of microamps.
What is the guaranteed input offset voltage for LT1078IS8#PBF over temperature?
For LT1078IS8#PBF (I-grade), the input offset voltage is guaranteed at 80–280 μV over the full –40°C to +85°C operating range. The typical drift is 0.4 μV/°C, with a worst-case drift of 3.5 μV/°C specified for the SOIC-8 variant - critical for uncalibrated field instruments.
Can LT1078IS8#PBF operate from a single 3.7V Li-ion cell?
Yes, LT1078IS8#PBF operates down to 2.2V minimum supply voltage. At 3.7V, its 43–60μA supply current per amplifier ensures >5-year battery life in always-on sensor nodes. Output swing remains functional (≥3.0V high, ≤130mV low), and PSRR exceeds 98dB - minimizing sensitivity to battery voltage sag.
Is LT1078IS8#PBF pin-compatible with other dual op amps in SOIC-8?
LT1078IS8#PBF uses the industry-standard LT1013DS8 pinout (not traditional DIP), placing –IN A on Pin 1 and V– on Pin 6. It is pin-compatible with LT1013, LT1014, and LTC1050 in SOIC-8, but not with LM358 or TL072 due to differing pin assignments for V– and output terminals.
LT1078IS8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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:
- 8-SO
LT1078IS8#PBF FAQ
1.How can I place an order for LT1078IS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1078IS8#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 LT1078IS8#PBF reliable?
The price and inventory of LT1078IS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1078IS8#PBF is usually 5 days.
3.What payment methods are accepted for LT1078IS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1078IS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1078IS8#PBF?
LT1078IS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1078IS8#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 LT1078IS8#PBF?
For technical support, including LT1078IS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1078IS8#PBF requirements.
6.How does Aetrix verify that LT1078IS8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1078IS8#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 LT1078IS8#PBF meets industry standards.
7.What is the process for return or replacement of LT1078IS8#PBF?
All LT1078IS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1078IS8#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 LT1078IS8#PBF part is unused and in its original packaging.
Return procedure for LT1078IS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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