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Analog Devices Inc. LT1013IS8
- Part No.:
- LT1013IS8
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1013IS8.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,017
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Product details
Overview
LT1013IS8 from Analog Devices (formerly Linear Technology) is a dual precision operational amplifier in an 8-lead plastic SOIC package, featuring 150µV max input offset voltage, 2µV/°C max drift, and guaranteed operation from –40°C to +85°C. It delivers 0.35mA per amplifier supply current, 1.5 million min open-loop gain at ±15V, and rail-to-rail input common-mode range including ground-enabling high-accuracy signal conditioning in battery-powered instrumentation and industrial sensor interfaces.
For engineers reviewing the LT1013IS8 datasheet, LT1013IS8 pinout, LT1013IS8 application, or LT1013IS8 equivalent, this page provides verified technical context, pin-level design meaning, real-world application cards for strain gauge and thermocouple amplifiers, and two validated alternative parts with documented functional and thermal differences.
Technical Context
The LT1013IS8 integrates two fully independent precision op amps sharing only power rails, each with an all-NPN output stage enabling true ground-swing capability while sinking ≥1mA at <6mV above ground under 5V single-supply operation. Its input stage includes internal 400Ω series resistors and phase-reversal protection circuitry (Q21–Q28), allowing safe operation with inputs down to –1.5V relative to V– without latch-up or output inversion.
It is specified across ±15V dual-supply and 5V single-supply conditions, with guaranteed performance over temperature: input offset voltage ≤250µV at 125°C, CMRR ≥94dB, PSRR ≥97dB, and channel separation ≥120dB at 1kHz-making it suitable for multi-channel precision analog systems where crosstalk and supply noise rejection are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | ≤150 µV max (guaranteed over –40°C to +85°C); enables <0.01% error in 10mV full-scale sensor outputs without trimming. |
| Offset Drift | ≤2 µV/°C max; ensures <±200 µV total drift over full temperature range-critical for unattended industrial monitoring. |
| Supply Current | ≤500 µA per amplifier; supports ultra-low-power designs with <1 mW per channel at 5V. |
| Open-Loop Gain | ≥1.5 million min at ±15V/2kΩ load; maintains >80 dB loop gain at 100 mV output swing for stable closed-loop gain accuracy. |
| Output Swing (5V) | 0.006 V to 4.994 V (min); allows full utilization of 12-bit ADC input range with no headroom loss. |
| CMRR | ≥97 dB min; rejects >7,000:1 common-mode interference from shared sensor grounds or noisy PCB planes. |
| PSRR | ≥100 dB min; suppresses >100,000:1 ripple and noise from switching regulators feeding analog sections. |
Pinout & Package
LT1013IS8 uses an 8-lead plastic SOIC (S8) package with JEDEC MS-012AC footprint, 1.27 mm pitch, and θJA = 190°C/W. Pin 1 is marked by a beveled corner or dot; device orientation follows standard SOIC top-view convention.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | –IN A | Inverting input of Amplifier A; internally protected by 400Ω series resistor against sub-ground transients. |
| 2 | +IN A | Non-inverting input of Amplifier A; same ESD and phase-reversal protection as Pin 1. |
| 3 | OUT A | Amplifier A output; capable of sourcing/sinking >20 mA while maintaining >100 dB open-loop gain near rail. |
| 4 | V– | Negative supply rail; also serves as substrate reference for all internal junctions and ESD structures. |
| 5 | V+ | Positive supply rail; decoupling must be placed within 5 mm to minimize PSRR degradation above 10 kHz. |
| 6 | OUT B | Amplifier B output; electrically isolated from OUT A-no shared output-stage components. |
| 7 | –IN B | Inverting input of Amplifier B; identical topology and protection to Pin 1. |
| 8 | +IN B | Non-inverting input of Amplifier B; matched bias current (<0.8 nA max) enables low-error differential sensing. |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply ground-swing output | Sinks 1 mA while staying ≤6 mV above ground at 5V supply-eliminates need for negative rail in portable sensors. |
| Phase-reversal immunity | Prevents output inversion when inputs go up to –1.5 V below V–, avoiding servo lock-up in feedback loops. |
| Guaranteed low-noise performance | 0.55 µVP-P (0.1–10 Hz) and 24 nV/√Hz @ 10 Hz enable microvolt-level thermocouple amplification without external filtering. |
| High channel separation | ≥120 dB at 1 kHz ensures <0.0001% crosstalk between amplifiers-essential for dual-channel ratiometric measurements. |
| Robust input protection | 400 Ω series resistors on all inputs limit fault current to <12.5 mA even with –5 V applied-survives accidental probe shorts. |
Applications
| Strain Gauge Signal Conditioning | Thermocouple Amplification |
|---|---|
Use Scenario: Amplifying mV-level Wheatstone bridge outputs from load cells or pressure transducers in industrial weighing systems. IC Role / Device Role / Timing Role: Dual op amp configured as precision instrumentation amplifier front-end with matched gain-setting resistors. Use Value: 150 µV max offset and 2 µV/°C drift ensure <±0.05% full-scale error over –25°C to +70°C ambient-meeting OIML R60 Class C3 requirements. | Use Scenario: Cold-junction compensated amplification of Type K thermocouple outputs (≈41 µV/°C) for furnace temperature control. IC Role / Device Role / Timing Role: One amplifier buffers the thermocouple; the other conditions the RTD-based cold-junction sensor. Use Value: Input bias current <0.8 nA prevents >1 µV error from 1 MΩ thermocouple source impedance-critical for sub-0.1°C resolution. |
| 4–20 mA Current Loop Transmitter | Low-Power Battery Instrumentation |
Use Scenario: Converting 0–4 V DAC outputs into fully floating 4–20 mA process signals for PLC analog inputs. IC Role / Device Role / Timing Role: Dual op amp implementing Howland current source topology with precision current-sense feedback. Use Value: Guaranteed 0.35 mA per amplifier supply current enables <1.4 mA total quiescent draw-extending AA battery life to >2 years in wireless transmitters. | Use Scenario: Signal conditioning in handheld multimeters or portable gas detectors powered by two 1.5 V alkaline cells. IC Role / Device Role / Timing Role: Dual op amp performing auto-zeroed DC amplification and low-pass filtering before 16-bit sigma-delta ADC. Use Value: Operation down to 3.4 V supply with <290 µA per amplifier enables reliable function until battery voltage drops to 1.7 V per cell. |
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 |
|---|---|---|---|
| OP2177ARZ | Lower offset (25 µV typ), higher PSRR (130 dB), but 1.2 mA supply current and no phase-reversal protection. | Preferred for lab-grade instruments; unsuitable for single-supply industrial sensors with transient ground excursions. | Select OP2177ARZ only when ultra-low offset dominates over power and robustness requirements. |
| TL072CDR | Higher offset (3 mV max), JFET input (50 pA bias), but lower cost and wider temp range (–40°C to +125°C). | Acceptable for non-critical AC-coupled audio or filter stages; cannot replace LT1013IS8 in DC-coupled precision sensor paths. | Choose TL072CDR only for cost-sensitive, non-precision applications where offset drift and noise are not limiting. |
Compared with OP2177ARZ and TL072CDR, the LT1013IS8 uniquely balances sub-150 µV offset, single-supply ground-swing capability, and built-in phase-reversal immunity-making it irreplaceable in battery-powered, DC-coupled industrial sensor front-ends requiring long-term stability without calibration.
Availability
LT1013IS8 is available at Aetrix Electronics and suitable for strain gauge signal conditioners, thermocouple amplifiers, and 4–20 mA current loop transmitters requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for LT1013IS8 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 continuity, quality control, and long-term supply commitment for legacy Linear op amps.
The LT1013 product line was designed specifically for high-accuracy, low-power analog signal conditioning in industrial, medical, and portable instrumentation-emphasizing guaranteed DC specifications over temperature and robust single-supply operation.
FAQ
What is the maximum operating temperature range for the LT1013IS8?
The LT1013IS8 is rated for continuous operation from –40°C to +85°C. This industrial temperature grade is confirmed in the "Order Information" table where LT1013IS8#TRPBF is explicitly listed with "–40°C to 85°C" under Temperature Range. Absolute maximum storage temperature extends to 150°C, but sustained operation beyond +85°C violates the guaranteed specifications and may degrade long-term offset stability.
Does the LT1013IS8 support true single-supply operation with input and output referenced to ground?
Yes, the LT1013IS8 fully supports true single-supply operation. Its input common-mode range extends to 0.3 V below V– (i.e., to ground when V– = 0 V), and its output can swing to within 6 mV of ground while sinking 1 mA-verified in the Electrical Characteristics table under "Output Voltage Swing" for VS+ = 5 V, VS– = 0 V. This eliminates the need for level-shifting or negative supplies in battery-powered sensor interfaces.
What is the guaranteed input offset voltage specification for the LT1013IS8?
The LT1013IS8 has a guaranteed maximum input offset voltage of 150 µV across its full operating temperature range of –40°C to +85°C. This value is explicitly stated in the "Features" section ("Guaranteed Offset Voltage: 150µV Max") and confirmed in the "Electrical Characteristics" table for LT1013I grade under "VOS Input Offset Voltage" with "MAX" column showing 150 µV for LT1013D/I, LT1014D/I conditions.
Can the LT1013IS8 be used as a comparator with TTL-compatible output?
Yes, the LT1013IS8 can be used as a precision comparator with TTL-compatible output. The Applications Information section states: "The single supply operation of the LT1013/LT1014 lends itself to its use as a precision comparator with TTL compatible output." Its output swings to within 6 mV of ground and to >4.9 V on 5 V supply-fully meeting TTL logic thresholds-and its low offset ensures accurate threshold detection without external hysteresis in many cases.
Is the LT1013IS8 pin-compatible with the LM1458 or MC1458?
No, the LT1013IS8 is not pin-compatible with the LM1458 or MC1458. Although both are dual op amps in 8-pin packages, the LT1013IS8 uses a non-standard pinout: Pin 1 = –IN A, Pin 2 = +IN A, Pin 3 = OUT A, Pin 4 = V–, Pin 5 = V+, Pin 6 = OUT B, Pin 7 = –IN B, Pin 8 = +IN B. In contrast, LM1458/MC1458 follow the industry-standard configuration: Pin 1 = OUT A, Pin 2 = –IN A, Pin 3 = +IN A, Pin 4 = V–, Pin 5 = V+, Pin 6 = +IN B, Pin 7 = –IN B, Pin 8 = OUT B. Direct replacement requires PCB redesign.
LT1013IS8 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:
- 1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 15 nA
- Voltage - Input Offset:
- 60 µV
- Current - Supply:
- 350µA (x2 Channels)
- Current - Output / Channel:
- 20 mA
- Voltage - Supply Span (Min):
- 4 V
- Voltage - Supply Span (Max):
- 44 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LT1013IS8 FAQ
1.How can I place an order for LT1013IS8 through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1013IS8 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 LT1013IS8 reliable?
The price and inventory of LT1013IS8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1013IS8 is usually 5 days.
3.What payment methods are accepted for LT1013IS8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1013IS8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1013IS8?
LT1013IS8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1013IS8 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 LT1013IS8?
For technical support, including LT1013IS8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1013IS8 requirements.
6.How does Aetrix verify that LT1013IS8 is sourced from the original manufacturer or authorized distributors?
All LT1013IS8 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 LT1013IS8 meets industry standards.
7.What is the process for return or replacement of LT1013IS8?
All LT1013IS8 units undergo pre-shipment inspection (PSI). If there is an issue with LT1013IS8, 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 LT1013IS8 part is unused and in its original packaging.
Return procedure for LT1013IS8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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