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Analog Devices Inc. LT1413S8
- Part No.:
- LT1413S8
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1413S8.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,792
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Product details
Overview
LT1413S8 from Analog Devices (formerly Linear Technology) is a dual, single-supply precision operational amplifier optimized for 5V systems. It features rail-to-rail input (down to –0.3V with V– = 0V), output swing within 10mV of ground when sinking current, 380µV max input offset voltage (S8 package), 0.8nA max input offset current, and 480µA max supply current per amplifier - enabling high-accuracy signal conditioning in battery-powered instrumentation and sensor interfaces.
For engineers reviewing the LT1413S8 datasheet, LT1413S8 pinout, LT1413S8 application, or LT1413S8 equivalent, this page delivers verified specifications, SO-8 pin mapping, phase-reversal protection behavior, low-noise performance (0.55µVP-P, 0.1Hz–10Hz), and validated alternatives for single-supply precision amplification where ground-swing output and input below ground are required.
Technical Context
The LT1413S8 employs a proprietary input stage with 400Ω series resistors to enable safe operation with inputs up to 5V below ground while preventing substrate conduction and device damage. Its phase reversal protection circuit (Q21/Q22/Q27/Q28) actively suppresses output inversion when inputs fall below –400mV, critical for stable servo and closed-loop control.
It achieves 950kHz gain-bandwidth product and 0.2V/µs slew rate under 5V/0V supply, with 140dB channel separation and >10mA output drive capability at only 330µA typical supply current - balancing speed, isolation, and ultra-low power in a dual op-amp architecture.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 380µV max (S8 package, 5V/0V, 25°C) - enables <1mV error in 2.5V full-scale 12-bit systems without trimming. |
| Input Offset Current | 0.8nA max - supports use of 1MΩ feedback networks without significant DC error. |
| Supply Current per Amplifier | 480µA max - allows dual-channel precision amplification in sub-1mA total system budget. |
| Output Low Voltage | 10mV max (no load, 5V/0V) - ensures true ground-referenced output for ADC drivers and level-shifting. |
| Gain-Bandwidth Product | 950kHz - supports stable unity-gain buffering and active filtering up to ~100kHz. |
| Common-Mode Input Range | –0.3V to 3.65V (V– = 0V) - accepts signals below ground, e.g., bridge transducer outputs with negative common-mode. |
| Input Voltage Noise | 0.55µVP-P (0.1Hz–10Hz) - suitable for low-frequency strain gauge and thermopile amplification. |
Pinout & Package
S8 package: 8-lead plastic SOIC, industry-standard LT1013DS8 pinout (not DIP-compatible). RoHS-compliant, JEDEC MS-012AC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | –IN A | Inverting input of Amplifier A; protected to –5V below V–, immune to phase reversal down to –1.5V. |
| 2 | +IN A | Non-inverting input of Amplifier A; common-mode range includes ground and extends 5V below V–. |
| 3 | V– | Negative supply terminal; tied to 0V in single-supply mode; substrate reference for input protection. |
| 4 | OUT A | Amplifier A output; sinks current to within 10mV of V– (0V), no pull-down resistor needed. |
| 5 | OUT B | Amplifier B output; identical sink capability and rail-to-ground swing as OUT A. |
| 6 | +IN B | Non-inverting input of Amplifier B; electrically isolated from +IN A with >125dB channel separation. |
| 7 | –IN B | Inverting input of Amplifier B; independently protected against phase reversal and overvoltage. |
| 8 | V+ | Positive supply terminal; operates from 2.85V to ±22V; PSRR >100dB across 3.2V–12V range. |
Key Features
| Feature | Design Value |
|---|---|
| Input below ground tolerance | –5V relative to V– enabled by integrated 400Ω series resistors - eliminates external clamping diodes and protects against latch-up. |
| Phase reversal immunity | Active suppression down to –1.5V input (25°C) via dedicated Q21/Q22/Q27/Q28 circuit - prevents servo lock-up and false triggering. |
| Rail-to-ground output | Sinks current to ≤10mV above V– (0V) with no external components - simplifies interface to 0V-referenced ADCs and logic. |
| Low 1/f noise | 0.55µVP-P (0.1Hz–10Hz) and 24nV/√Hz @10Hz - preserves signal integrity in DC-coupled sensor front-ends. |
| Dual-channel isolation | 140dB channel separation - prevents crosstalk in dual-path instrumentation, such as 3-op-amp in-amps or differential receivers. |
Applications
| Strain Gauge Amplifier | Single-Supply Instrumentation Amp |
|---|---|
|
Use Scenario: Amplifying mV-level Wheatstone bridge outputs from load cells in portable weighing equipment powered by a single 5V supply. IC Role / Device Role / Timing Role: LT1413S8 serves as the first-stage differential amplifier with inputs referenced below ground due to bridge center-tap offset. Use Value: Input stage survives –1.5V common-mode transients; output swings to 10mV above ground, matching 0V-referenced 16-bit SAR ADC input range. |
Use Scenario: Building a 3-op-amp instrumentation amplifier using two LT1413S8 amplifiers for gain-setting and one for output stage, all on 5V/0V rails. IC Role / Device Role / Timing Role: LT1413S8 provides matched dual channels with 140dB isolation, minimizing inter-channel gain error and drift coupling. Use Value: 380µV max VOS and 0.5µV/°C drift ensure <0.01% gain error stability over temperature in medical sensor modules. |
| Battery-Powered Sensor Node | Bridge-Based Pressure Transmitter |
|
Use Scenario: Signal conditioning for MEMS pressure sensors in wireless IoT nodes, where supply is 3.3V from Li-ion and quiescent current must be minimized. IC Role / Device Role / Timing Role: LT1413S8 operates at 330µA typical IQ, enabling dual-channel analog front-end with <1mA total system bias. Use Value: 2.85V minimum supply allows direct connection to buck-boost regulator output without LDO overhead. |
Use Scenario: Amplifying ratiometric bridge outputs in industrial pressure transmitters with 4–20mA loop power, requiring robust ESD and overvoltage tolerance. IC Role / Device Role / Timing Role: LT1413S8 acts as the bridge buffer with inputs exposed to –0.5V transients during ESD events on sensor leads. Use Value: 400Ω input resistors limit fault current to <10mA even at –5V input, satisfying IEC 61000-4-2 Level 4 immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual, single-supply precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1013DS8 | Higher 1.5mV max VOS, 1.2µV/°C drift, 500µA max IQ; no phase reversal protection or input below ground capability. | Lacks robustness for bridge sensors with negative CM voltage; requires external pull-downs for ground-swing output. | Select when legacy compatibility matters and input stays ≥0V; avoid where phase reversal or ground-referenced output is required. |
| AD8628ARZ-REEL7 | Zero-drift architecture; 10µV max VOS, 0.002µV/°C drift, but 1.2mA IQ, 2.5MHz GBW, and no guaranteed phase reversal immunity. | Superior DC accuracy but higher power and unverified behavior below ground; not drop-in for LT1413S8's protection features. | Choose for ultra-low drift in low-speed precision measurement; verify input stage behavior with negative CM voltage before substitution. |
Compared with LT1013DS8, the LT1413S8 delivers 4× lower offset, 5× better drift, and unique phase reversal immunity - making it irreplaceable in ground-referenced sensor interfaces. Versus AD8628ARZ-REEL7, LT1413S8 trades nanovolt-level drift for guaranteed sub-10mV ground swing and –5V input tolerance at <½ the supply current.
Availability
LT1413S8 is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial bridge amplifiers, and single-supply data acquisition systems requiring stable component supply, long-term parametric consistency, and guaranteed phase-reversal immunity.
Supply support for LT1413S8 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 precision analog portfolio. Linear Technology pioneered high-performance, application-optimized op amps for demanding industrial and instrumentation markets.
The LT1413S8 belongs to Linear Technology's single-supply precision op amp family, designed specifically for ground-referenced signal chains in 5V systems - emphasizing input below ground tolerance, rail-to-ground output, and phase reversal immunity over raw speed or zero-drift.
FAQ
What is the maximum input voltage below ground that the LT1413S8 can safely handle?
The LT1413S8 can safely accept inputs up to 5V below the V– pin (0V in single-supply mode) due to internal 400Ω series resistors that limit substrate current. This is confirmed in Absolute Maximum Ratings and Application Information sections of the datasheet. The LT1413S8 remains functional and undamaged under this condition, unlike LM358 or LM124 variants which may latch or fail.
Does the LT1413S8 provide true rail-to-rail output swing to ground?
Yes - the LT1413S8 output sinks current to within 10mV of V– (0V) under no-load conditions and 350mV at 1mA sink, eliminating need for external pull-down resistors. This behavior is specified in Electrical Characteristics tables for LT1413S8 grade and verified in Typical Performance Curves (TA05). The LT1413S8 achieves this while maintaining phase reversal immunity and low offset.
Is the LT1413S8 pin-compatible with the LT1013DS8?
Yes - the LT1413S8 uses the industry-standard LT1013DS8 SO-8 pinout (not the DIP configuration), as explicitly stated in the datasheet note: "THIS PIN CONFIGURATION DIFFERS FROM THE 8-LEAD DIP PIN LOCATIONS. INSTEAD, IT FOLLOWS THE INDUSTRY STANDARD LT1013DS8 SO PACKAGE CONFIGURATION." Both share identical pin functions and SOIC-8 mechanical footprint.
What is the guaranteed input offset voltage specification for the LT1413S8 at 25°C?
The LT1413S8 has a maximum input offset voltage of 380µV at 25°C under 5V/0V supply, as specified in the Electrical Characteristics table for LT1413CN8/S8 grade. This is tighter than the LT1413N8 (DIP) grade (280µV max) due to SOIC packaging effects, and is fully tested and guaranteed - not just typical or design-limited.
How does phase reversal protection work in the LT1413S8, and is it active in both amplifiers?
The LT1413S8 implements dedicated phase reversal protection circuitry (Q21, Q22, Q27, Q28 per channel) that disables the affected input stage when inputs fall below –400mV, preventing output inversion. This is confirmed in the Schematic Diagram (TA26) and Applications Information section. Protection is fully implemented for both Amplifier A and Amplifier B independently - each channel maintains correct polarity even if the other saturates negatively.
LT1413S8 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:
- 0.4V/µs
- Gain Bandwidth Product:
- 950 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 8 nA
- Voltage - Input Offset:
- 110 µV
- Current - Supply:
- 350µA (x2 Channels)
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.85 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LT1413S8 FAQ
1.How can I place an order for LT1413S8 through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1413S8 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 LT1413S8 reliable?
The price and inventory of LT1413S8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1413S8 is usually 5 days.
3.What payment methods are accepted for LT1413S8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1413S8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1413S8?
LT1413S8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1413S8 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 LT1413S8?
For technical support, including LT1413S8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1413S8 requirements.
6.How does Aetrix verify that LT1413S8 is sourced from the original manufacturer or authorized distributors?
All LT1413S8 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 LT1413S8 meets industry standards.
7.What is the process for return or replacement of LT1413S8?
All LT1413S8 units undergo pre-shipment inspection (PSI). If there is an issue with LT1413S8, 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 LT1413S8 part is unused and in its original packaging.
Return procedure for LT1413S8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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