My Inquiry
My Account
Analog Devices Inc. LT1078IS8
- Part No.:
- LT1078IS8
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1078IS8.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,083
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LT1078IS8 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, 0.07V/μs slew rate, and rail-to-ground output swing while sinking current-enabling battery-powered instrumentation amplifiers and thermocouple signal conditioning without pull-down resistors.
For engineers reviewing the LT1078IS8 datasheet, LT1078IS8 pinout, LT1078IS8 application, or LT1078IS8 equivalent, this page provides verified specifications, validated SOIC-8 pin configuration, real-world use cases in remote sensor interfaces and micropower filters, and two confirmed alternative op amps with documented parameter trade-offs.
Technical Context
The LT1078IS8 employs an all-NPN output stage enabling true ground-sinking capability-unlike competing micropower op amps requiring external pull-down resistors. Its input stage includes series protection resistors preventing destructive substrate current when inputs fall up to 5V below ground, and integrated phase reversal protection ensures stable output even with –1V input transients.
Offset voltage is internally trimmed at 5V/0V supply conditions, achieving 70μV max (180μV max in SO package per spec table), with 0.4μV/°C typical drift and 0.6μVP-P (0.1Hz–10Hz) voltage noise-performance enabled by a 0.7Hz 1/f corner, three times lower than prior monolithic micropower op amps.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current per Amp | 50μA max - enables multi-year battery life in portable sensors |
| Input Offset Voltage | 180μV max (SO package) - supports 16-bit precision in low-gain signal chains |
| Gain Bandwidth Product | 200kHz - sufficient for anti-aliasing filters and 60Hz notch designs |
| Slew Rate | 0.07V/μs - adequate for <10kHz small-signal amplification without distortion |
| Output Swing (Low) | ≤1.0mV above ground (2kΩ load) - eliminates need for power-wasting pull-down resistors |
| Input Noise (0.1–10Hz) | 0.6μVP-P - critical for thermocouple and RTD front-ends with sub-μV signals |
| Common Mode Range | Extends 0.3V below ground - accommodates transient undershoot in single-supply systems |
Pinout & Package
LT1078IS8 is housed in an 8-lead plastic SOIC (S8) package, following the industry-standard LT1013DS8 pinout-not the traditional DIP layout. Thermal resistance is θJA = 150°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (–IN A) | Inverting input of amplifier A | Accepts differential input signals; protected against >5V negative overvoltage |
| 2 (OUT A) | Output of amplifier A | Swings to within 1mV of ground while sinking ≥100μA; no pull-down required |
| 3 (V+) | Positive supply rail | Operates from 2.2V min to ±22V; specified for 5V/0V single supply |
| 4 (OUT B) | Output of amplifier B | Independent output with identical sinking capability as OUT A |
| 5 (+IN A) | Non-inverting input of amplifier A | High-impedance node (6GΩ common-mode); bias current ≤0.25nA |
| 6 (V–) | Negative supply rail / ground reference | Functions as 0V reference in single-supply mode; substrate connection point |
| 7 (+IN B) | Non-inverting input of amplifier B | Matched to +IN A for instrumentation amplifier applications |
| 8 (–IN B) | Inverting input of amplifier B | Matched to –IN A; enables precise dual-amplifier topologies |
Key Features
| Feature | Design Value |
|---|---|
| Ground-sinking output stage | Eliminates external pull-down resistors, saving >300μA in instrumentation amplifiers |
| Phase reversal protection | Maintains correct polarity even with –1V input transients-prevents servo lockup |
| Ultra-low 0.1–10Hz noise | 0.6μVP-P enables direct amplification of thermocouple outputs without chopper stabilization |
| Single-supply optimized trimming | Offset voltage minimized at 5V/0V, not ±15V-maximizes accuracy in battery-powered systems |
| Input overvoltage protection | Series resistors limit substrate current during –5V input excursions-enhances field reliability |
Applications
| Remote Sensor Amplifier | Thermocouple Amplifier |
|---|---|
Use Scenario: Amplifying microvolt-level signals from temperature, pressure, or gas sensors located meters from the ADC in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Dual op amp configured as precision instrumentation amplifier with matched gain-setting resistors. Use Value: 50μA supply current per amp extends coin-cell life beyond 5 years; 180μV offset ensures <0.1°C error in Type-K thermocouple measurement. | Use Scenario: Conditioning low-level Seebeck voltage (≈41μV/°C) from K-type thermocouples in industrial process control. IC Role / Device Role / Timing Role: First-stage gain block with cold-junction compensation, leveraging rail-to-ground output for direct ADC interfacing. Use Value: 0.6μVP-P (0.1–10Hz) noise and 0.4μV/°C drift minimize thermal EMF-induced errors across –40°C to +85°C operating range. |
| Micropower Sample-and-Hold | Micropower Filters |
Use Scenario: Capturing slow-varying analog sensor outputs (e.g., pH, humidity) in energy-harvesting systems with intermittent power. IC Role / Device Role / Timing Role: Unity-gain buffer driving hold capacitor, exploiting low bias current (<0.25nA) to minimize droop. Use Value: Input bias current <0.25nA limits voltage droop to <1mV/second on 1μF hold capacitor-enabling >10-second sampling intervals. | Use Scenario: Implementing 40Hz second-order low-pass filters with 60Hz notch for ECG or environmental monitoring in wearable devices. IC Role / Device Role / Timing Role: Dual op amp in active filter topology (e.g., biquad), using matched internal amplifiers for Q > 30 stability. Use Value: 200kHz GBW and 0.07V/μs slew rate support clean 40Hz cutoff with minimal phase shift; SOIC-8 footprint minimizes PCB area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual micropower precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2050HS8 | Zero-drift architecture; 0.5μV max offset, 1.5μV/°C drift, 1.2mA supply current | Superior DC precision but 24× higher supply current limits battery life | Select LTC2050HS8 only when ultra-low offset drift outweighs micropower requirements |
| OPA2333AIDR | Auto-zero design; 10μV max offset, 0.2μV/°C drift, 17μA supply current per amp | Lower noise (0.65μVP-P) but reduced output drive (±25mA vs ±5mA) and no guaranteed ground-sinking | Choose OPA2333AIDR for highest DC accuracy in non-battery-critical systems with light loads |
Compared with LT1078IS8, LTC2050HS8 trades 24× higher quiescent current for near-zero drift, while OPA2333AIDR achieves lower offset at the cost of unverified ground-sinking capability and reduced output current-making LT1078IS8 uniquely balanced for long-life, ground-referenced, moderate-precision applications.
Availability
LT1078IS8 is available at Aetrix Electronics and suitable for remote sensor amplifiers, thermocouple interfaces, micropower sample-and-hold circuits, and low-frequency active filters requiring stable component supply across extended production lifecycles.
Supply support for LT1078IS8 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, single-supply precision signal conditioning-targeting battery-operated instrumentation, satellite telemetry, and portable medical devices where ground-sinking capability and sub-100μV offset were previously unattainable at <50μA supply current.
FAQ
What is the maximum supply current per amplifier for LT1078IS8?
The LT1078IS8 has a maximum supply current of 50μA per amplifier at 25°C under 5V/0V supply conditions. This value increases to 60μA over the full –40°C to +85°C industrial temperature range. The low quiescent current enables multi-year operation from lithium coin cells in remote sensor nodes, and the dual-amplifier configuration allows shared supply rails to minimize total system power.
Does LT1078IS8 support true rail-to-rail output swing?
The LT1078IS8 does not provide rail-to-rail output swing on the positive side-it swings to approximately 4.2V with no load at 5V supply-but it does achieve rail-to-ground output on the negative side, sinking current to within 1.0mV of ground with a 2kΩ load. This ground-sinking capability eliminates the need for external pull-down resistors, a key differentiator versus other micropower op amps like the OP-290 or OP-490.
What is the input offset voltage specification for LT1078IS8?
The LT1078IS8 has a maximum input offset voltage of 180μV in the 8-pin SOIC package (S8), as explicitly stated in the Electrical Characteristics table for "LT1078IS8/LT1078S8" under VS = 5V, 0V conditions. This is higher than the 70μV max for the ceramic DIP (J8) version due to package-related thermal effects, but remains among the lowest for any micropower dual op amp.
Can LT1078IS8 operate from a single 3V lithium cell?
Yes, the LT1078IS8 is fully specified down to 2.2V minimum supply voltage and functions reliably at 3V from a lithium cell. At 3V, its offset voltage increases by approximately 8μV due to PSRR (114dB = 2μV/V), and its output swing reduces slightly-but it retains ground-sinking capability and 200kHz gain bandwidth, making it ideal for compact, single-cell portable instruments.
Is LT1078IS8 pin-compatible with other dual op amps in SOIC-8 packages?
The LT1078IS8 uses the LT1013DS8 industry-standard SOIC-8 pinout (–IN A, OUT A, V+, OUT B, +IN A, V–, +IN B, –IN B), not the traditional DIP pinout. It is pin-compatible with LT1013, LT1014, and LT1077 in SOIC-8, but not with LM358 or TL072 which follow different pin assignments. Always verify pin mapping before board reuse.
LT1078IS8 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 FAQ
1.How can I place an order for LT1078IS8 through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1078IS8 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 reliable?
The price and inventory of LT1078IS8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1078IS8 is usually 5 days.
3.What payment methods are accepted for LT1078IS8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1078IS8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1078IS8?
LT1078IS8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1078IS8 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?
For technical support, including LT1078IS8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1078IS8 requirements.
6.How does Aetrix verify that LT1078IS8 is sourced from the original manufacturer or authorized distributors?
All LT1078IS8 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 meets industry standards.
7.What is the process for return or replacement of LT1078IS8?
All LT1078IS8 units undergo pre-shipment inspection (PSI). If there is an issue with LT1078IS8, 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 part is unused and in its original packaging.
Return procedure for LT1078IS8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LT1078IS8 Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
