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Analog Devices Inc. LT1078ACN8#PBF
- Part No.:
- LT1078ACN8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
LT1078ACN8#PBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,526
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Product details
Overview
LT1078ACN8#PBF from Analog Devices (formerly Linear Technology) is a micropower dual precision operational amplifier in an 8-pin PDIP 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.
For engineers reviewing the LT1078ACN8#PBF datasheet, LT1078ACN8#PBF pinout, LT1078ACN8#PBF application, or LT1078ACN8#PBF equivalent, this page provides verified electrical specifications, validated pin functions, real-world single-supply use cases, and two confirmed alternative op amps with documented performance trade-offs for low-power precision designs.
Technical Context
The LT1078ACN8#PBF uses an all-NPN output stage enabling true ground-swing capability without pull-down resistors, critical for micropower systems where output sinking below 10mV is required. Its input stage incorporates series input protection resistors and phase-reversal immunity, allowing safe operation with inputs down to –1V relative to V– (0V).
It features a 0.7Hz 1/f noise corner and ultra-low 0.6μVP-P (0.1Hz–10Hz) voltage noise-performance unattainable in prior micropower op amps-achieved without sacrificing offset, drift, or drive strength. Offset voltage drift is specified at 0.4μV/°C (typ), and CMRR reaches 110dB under single-supply conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 50μA max per amplifier - enables multi-year battery life in remote sensor nodes |
| Input Offset Voltage | 70μV max - supports high-gain DC-coupled stages without manual nulling |
| Gain Bandwidth Product | 200kHz - sufficient for anti-alias filtering and low-frequency instrumentation |
| Slew Rate | 0.07V/μs - adequate for <10kHz full-scale step response in 5V systems |
| Output Swing (Low) | ≤6mV above ground (no load) - eliminates need for power-wasting pull-down resistors |
| Input Noise (0.1–10Hz) | 0.6μVP-P - preserves signal integrity in thermocouple and RTD front-ends |
| Common Mode Rejection | 110dB - rejects supply ripple and shared-noise coupling in single-supply rails |
Pinout & Package
LT1078ACN8#PBF is housed in an 8-pin plastic DIP (N8) package with industry-standard pinout matching the LT1013DS8 SO configuration-not traditional DIP. Thermal resistance θJA = 130°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input A | Differential input node for first amplifier; accepts signals down to –0.3V below ground |
| 2 | Noninverting Input A | High-impedance input (≥6GΩ common-mode); protected against phase reversal to –1V |
| 3 | Output A | Capable of sourcing/sinking 5mA; swings to within 6mV of ground when sinking |
| 4 | V– (Ground) | Reference terminal for single-supply operation; not internally connected to substrate |
| 5 | Noninverting Input B | Second amplifier input; matched bias current (6nA typ) enables precision difference amplifiers |
| 6 | Inverting Input B | Matched offset voltage (ΔVOS ≤110μV at 50% yield) supports dual-amplifier topologies |
| 7 | Output B | Independent output stage; channel separation >130dB minimizes crosstalk in dual-channel filters |
| 8 | V+ | Positive supply rail; operates down to 2.2V - compatible with single Li-cell or two Ni-Cd cells |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-ground output sink | Eliminates external pull-down resistors, saving >300μA in instrumentation amplifier configurations |
| Phase reversal immunity | Guaranteed non-inverting behavior with inputs as low as –1V, preventing servo lockup |
| Ultra-low 0.1–10Hz noise | 0.6μVP-P enables sub-μV resolution in thermocouple amplifiers without chopper stabilization |
| Single-supply optimized specs | All parameters fully characterized at V+ = 5V, V– = 0V - no derating needed for battery designs |
| Input protection architecture | Series resistors limit fault current during transient sub-ground excursions, enhancing field reliability |
Applications
| Thermocouple Amplifier | Micropower Instrumentation Amplifier |
|---|---|
Use Scenario: Amplifying Type-K thermocouple outputs (≈41μV/°C) in portable environmental monitors powered by coin-cell batteries. IC Role / Device Role / Timing Role: First-stage low-noise, low-drift amplifier with rail-to-ground output enabling direct ADC interface. Use Value: 0.6μVP-P noise and 70μV offset enable ±0.5°C accuracy over 0–100°C without calibration. | Use Scenario: Dual-op-amp instrumentation amplifier for bridge-based pressure sensors in wireless IoT nodes. IC Role / Device Role / Timing Role: Dual amplifier providing matched gain and CMRR in a single package to minimize layout-induced mismatch. Use Value: ΔVOS ≤110μV (50% yield) and 130dB channel separation ensure <0.01% gain error across temperature. |
| Remote Sensor Signal Conditioning | Battery-Powered RTD Interface |
Use Scenario: Signal conditioning for 4–20mA loop-powered remote sensors with local 3.3V microcontroller interface. IC Role / Device Role / Timing Role: Precision buffer and level-shifter converting industrial current signals to ground-referenced voltage. Use Value: Input range extending to –0.3V allows safe handling of loop faults and transients without clamping diodes. | Use Scenario: Platinum RTD (PT100) linearization circuit in handheld medical thermometers using lithium primary cells. IC Role / Device Role / Timing Role: Dual amplifier implementing curvature correction and gain staging with minimal quiescent power. Use Value: 50μA per amplifier enables full system standby current <100μA - extending battery life beyond 5 years. |
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 |
|---|---|---|---|
| LT1013CN8#PBF | Higher supply current (200μA vs 50μA), higher offset (250μV vs 70μV), same 8-pin PDIP package | Lacks rail-to-ground sinking; requires pull-down resistors in single-supply configurations | Select only if higher speed (1MHz GBW) or legacy compatibility outweighs micropower and ground-swing requirements |
| OPA2333PAIDR | Zero-drift architecture (0.02μV/°C drift), lower noise (0.65μVP-P), but higher supply current (17μA per amp - not total) | Chopper-stabilized; introduces 100kHz switching artifacts unsuitable for sensitive analog front-ends | Prefer for ultra-low drift DC applications where chopper noise is acceptable and supply headroom permits 1.8V operation |
Compared with LT1078ACN8#PBF, LT1013CN8#PBF trades micropower and ground-swing capability for higher bandwidth, while OPA2333PAIDR achieves lower drift via chopper modulation at the cost of spectral purity-making LT1078ACN8#PBF uniquely suited for noise-sensitive, battery-constrained, single-supply precision amplification.
Availability
LT1078ACN8#PBF is available at Aetrix Electronics and suitable for battery-powered instrumentation, remote sensor amplifiers, and thermocouple signal conditioning requiring stable component supply across extended production lifecycles.
Supply support for LT1078ACN8#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, documentation, and manufacturing continuity for the LT1078 family.
The LT1078 product line was designed specifically for micropower, single-supply precision analog signal conditioning in portable and remote measurement systems-prioritizing ground-swing capability, ultra-low noise, and long-term stability over raw speed.
FAQ
What is the maximum operating temperature range for LT1078ACN8#PBF?
The LT1078ACN8#PBF is rated for 0°C to +70°C ambient operation. This commercial-grade temperature specification is explicitly defined in the Absolute Maximum Ratings table and confirmed across all electrical characteristics sections for the 'AC' grade. Operation outside this range may result in parametric degradation or functional failure, and is not guaranteed by Analog Devices.
Does LT1078ACN8#PBF support true single-supply operation with input signals below ground?
Yes, LT1078ACN8#PBF supports input voltages down to –0.3V relative to V– (ground) while maintaining linear operation and phase integrity. Its input stage includes series protection resistors and proprietary phase-reversal immunity circuitry, allowing safe operation with transient or intentional sub-ground inputs up to –1V-unlike LM124 or OP-290 which saturate or invert.
Can LT1078ACN8#PBF drive a 2kΩ load to ground without external components?
Yes, LT1078ACN8#PBF can sink 100μA into a 2kΩ load tied to ground while maintaining ≤130mV output saturation voltage (max), and ≤1.0mV with no load. Its all-NPN output stage eliminates the need for external pull-down resistors-reducing power consumption and PCB area versus competing micropower op amps like OP-90 or HA5141.
What is the typical 0.1Hz–10Hz output voltage noise of LT1078ACN8#PBF?
The typical 0.1Hz–10Hz output voltage noise of LT1078ACN8#PBF is 0.6μVP-P, measured at VS = ±2.5V with VO = 0V. This value is explicitly stated in the Features section and confirmed in Electrical Characteristics tables. It reflects the device's exceptionally low 1/f noise corner (0.7Hz), making it suitable for DC-coupled, low-frequency precision applications.
Is LT1078ACN8#PBF pin-compatible with standard 8-pin DIP op amps like LM358?
No, LT1078ACN8#PBF uses the industry-standard LT1013DS8 SO pinout (not traditional DIP), placing Output A on Pin 3 and V– on Pin 4. LM358 places Output A on Pin 1 and V– on Pin 4. Direct replacement would require PCB layout revision. The datasheet explicitly warns: "THIS PIN CONFIGURATION DIFFERS FROM THE 8-LEAD DIP PIN LOCATIONS."
LT1078ACN8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- 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:
- 30 µV
- Current - Supply:
- 38µA (x2 Channels)
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.2 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
LT1078ACN8#PBF FAQ
1.How can I place an order for LT1078ACN8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1078ACN8#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 LT1078ACN8#PBF reliable?
The price and inventory of LT1078ACN8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1078ACN8#PBF is usually 5 days.
3.What payment methods are accepted for LT1078ACN8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1078ACN8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1078ACN8#PBF?
LT1078ACN8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1078ACN8#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 LT1078ACN8#PBF?
For technical support, including LT1078ACN8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1078ACN8#PBF requirements.
6.How does Aetrix verify that LT1078ACN8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1078ACN8#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 LT1078ACN8#PBF meets industry standards.
7.What is the process for return or replacement of LT1078ACN8#PBF?
All LT1078ACN8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1078ACN8#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 LT1078ACN8#PBF part is unused and in its original packaging.
Return procedure for LT1078ACN8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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