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Texas Instruments LT1013CDR
- Part No.:
- LT1013CDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1013CDR.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,823
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Product details
Overview
LT1013CDR from Texas Instruments is a dual precision operational amplifier optimized for low-offset, low-drift, and single-supply operation. It delivers 150 µV max input offset voltage (25°C), 2 µV/°C max offset drift, 0.8 nA max input offset current, 0.5 mA max supply current per amplifier, and rail-to-rail output swing capability near ground-enabling accurate signal conditioning in thermocouple amplifiers and low-side current sensing circuits.
For engineers reviewing the LT1013CDR datasheet, LT1013CDR pinout, LT1013CDR application, or LT1013CDR equivalent, this page provides verified specifications, SOIC-8 package layout, real-world use cases in instrumentation and sensor interfaces, and two validated alternative parts with documented functional and thermal differences.
Technical Context
The LT1013CDR integrates two independent high-gain op-amps on a single die with matched input stages, enabling precise differential amplification without external trimming. Its input stage supports common-mode voltage down to ground and output swing within millivolts of VCC−, eliminating crossover distortion in single 5-V supply configurations.
It features phase reversal protection, low 0.55 µVPP (0.1–10 Hz) input noise, and 0.07 pA/√Hz current noise-critical for high-resolution DC-coupled measurement front-ends where long-term stability and low-frequency noise dominate error budgets.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 150 µV maximum at 25°C - ensures ≤0.015% gain error in unity-gain buffer or 100× gain instrumentation amplifier at room temperature |
| Offset Drift | 2 µV/°C maximum - contributes ≤20 µV total offset shift over 10°C ambient change, critical for uncalibrated industrial sensors |
| Supply Current | 0.5 mA maximum per amplifier - enables dual-channel precision amplification in battery-powered devices with <1 mW total quiescent power at 5 V |
| Input Offset Current | 0.8 nA maximum at 25°C - minimizes voltage error across high-impedance sources (e.g., pH electrodes, photodiode transimpedance feedback) |
| Output Swing | Swings to within 220 mV of ground while sinking 1 mA - supports direct interfacing to ADCs with 0 V reference without level-shifting circuitry |
| Gain Bandwidth | 1.5 V/µV minimum (750 kHz open-loop gain at RL = 2 kΩ) - provides stable 100× closed-loop gain up to ~7 kHz with adequate phase margin |
| Input Noise | 0.55 µVPP (0.1–10 Hz), 22 nV/√Hz @ 1 kHz - preserves signal integrity in sub-Hz biomedical and strain-gauge applications |
Pinout & Package
LT1013CDR is housed in an 8-pin SOIC (Small Outline Integrated Circuit) package measuring 4.90 mm × 3.91 mm, optimized for automated PCB assembly and thermal performance in compact industrial modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1OUT | Output of amplifier channel 1 - drives loads up to 2 kΩ with rail-to-rail swing capability near ground |
| 2 | 1IN− | Inverting input of channel 1 - high-impedance node (≥70 MΩ differential, ≥4 GΩ common-mode) for precision feedback networks |
| 3 | 1IN+ | Noninverting input of channel 1 - referenced to system ground or bias network; accepts input common-mode down to VCC− |
| 4 | VCC− | Negative supply terminal - must be connected to ground in single-supply operation; supports dual ±15 V operation |
| 5 | 2OUT | Output of amplifier channel 2 - electrically isolated from channel 1; shares same supply pins but has independent input/output paths |
| 6 | VCC+ | Positive supply terminal - accepts 5 V (single) or ±15 V (dual); internal ESD protection rated to ±1000 V HBM |
| 7 | 2IN− | Inverting input of channel 2 - matched to channel 1 for common-mode rejection in differential configurations |
| 8 | 2IN+ | Noninverting input of channel 2 - enables dual-channel instrumentation or active filtering without cross-talk |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation | Operates from 5 V with input range extending to ground and output sinking to within 220 mV of ground - eliminates need for negative rail in portable sensor nodes |
| Phase reversal protection | Prevents output latch-up when input common-mode exceeds supply rails - enhances robustness in noisy industrial environments with transient coupling |
| Low peak-to-peak noise | 0.55 µVPP (0.1–10 Hz) enables stable DC measurements without post-acquisition filtering in thermocouple or bridge sensor interfaces |
| High open-loop gain | 1.5 V/µV minimum (750 kHz) ensures <0.001% gain error in closed-loop configurations up to 100× gain with minimal settling time |
| Matched dual architecture | Two laser-trimmed amplifiers on one die provide consistent offset, drift, and noise performance - reduces calibration burden in dual-path systems |
Applications
| Thermocouple Amplifiers | Low-Side Current Measurement |
|---|---|
Use Scenario: Amplifying µV-level Seebeck voltages from K-type thermocouples in HVAC control panels with ambient temperature ranging from 0°C to 70°C. IC Role / Device Role / Timing Role: Precision DC-coupled noninverting amplifier with cold-junction compensation interface; second channel used for reference buffering. Use Value: 150 µV max input offset and 2 µV/°C drift ensure ≤1.5°C absolute error over full operating range without software calibration. | Use Scenario: Monitoring motor phase current via 10 mΩ shunt resistor in 24 V industrial drives, requiring detection of 100 mA–20 A range with 1% accuracy. IC Role / Device Role / Timing Role: Low-side differential amplifier with gain = 100, rejecting common-mode noise from PWM switching while preserving DC accuracy. Use Value: Input offset voltage ≤150 µV limits current-sense error to ≤15 µA at shunt, enabling reliable overcurrent detection at 100 mA threshold. |
| Instrumentation Amplifiers | Strain Gauge Signal Conditioning |
Use Scenario: Building 3-op-amp instrumentation amplifier for load cell outputs in weighing scales, operating from single 5 V supply with 100 µV full-scale signal. IC Role / Device Role / Timing Role: Dual-channel core: one amp as input stage buffer, second as output gain stage; matched characteristics minimize CMRR degradation. Use Value: Channel-to-channel matching ensures >100 dB CMRR at DC, reducing 50/60 Hz line interference without notch filters. | Use Scenario: Conditioning Wheatstone bridge output from metal foil strain gauges in structural health monitoring, where long-term drift must be <0.1% FS/year. IC Role / Device Role / Timing Role: First-stage amplifier with low 1/f noise and ultra-low drift; second channel used for ratiometric reference scaling. Use Value: 0.55 µVPP (0.1–10 Hz) noise and 0.4 µV/month long-term drift enable resolution of <10 ppm strain without recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual precision operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP27GP | Higher speed (8 MHz GBW), lower noise (3.5 nV/√Hz), but higher supply current (2.8 mA) and no guaranteed single-supply ground-swing output | Preferred for AC-coupled, wideband applications like audio preamps; unsuitable for low-power, true-rail-output DC sensing | Select OP27GP only when bandwidth >100 kHz and power budget >5 mW per channel is acceptable |
| LM358DR | Lower cost, wider temp range (−40°C to 125°C), but higher offset (3 mV), higher drift (7 µV/°C), and no phase reversal protection | Suitable for non-critical consumer-grade signal conditioning; fails to meet accuracy requirements for calibrated industrial sensors | Choose LM358DR only for cost-sensitive, non-precision applications where offset error >20× greater than LT1013CDR is tolerable |
Compared with OP27GP and LM358DR, the LT1013CDR uniquely balances ultra-low DC error, single-supply ground-swing capability, and sub-1 mA quiescent current-making it irreplaceable in battery-operated, high-accuracy, low-frequency sensor interfaces where long-term stability is mandatory.
Availability
LT1013CDR is available at Aetrix Electronics and suitable for thermocouple amplifiers, low-side current measurement, instrumentation amplifiers, and strain gauge signal conditioning requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for LT1013CDR 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
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of heritage in precision linear IC design.
The LT1013x product line was engineered specifically for high-accuracy, low-drift DC signal conditioning in industrial, test equipment, and sensor interface applications-prioritizing long-term stability over raw speed.
FAQ
What is the maximum input common-mode voltage range for LT1013CDR in single-supply operation?
The LT1013CDR supports an input common-mode voltage range from ground (VCC−) to VCC+ − 2 V when operated from a 5 V single supply. This allows direct interfacing with sensors whose output spans 0–3.5 V, such as resistive temperature detectors or bridge-based pressure transducers, without external level-shifting circuitry.
Does LT1013CDR support dual ±15 V supply operation?
Yes, LT1013CDR is fully specified for dual ±15 V operation per its Recommended Operating Conditions. In this configuration, the input common-mode range extends from −15 V to +13.5 V, and the output swings to ±12.5 V into a 2 kΩ load-enabling compatibility with legacy industrial control systems using bipolar supplies.
What is the typical peak-to-peak input noise voltage of LT1013CDR over 0.1 Hz to 10 Hz?
The LT1013CDR exhibits a typical peak-to-peak input noise voltage of 0.55 µV over the 0.1 Hz to 10 Hz band. This ultra-low 1/f noise performance is critical for high-resolution DC measurements in applications such as thermocouple amplification and precision weight scales where signal bandwidth is inherently narrow.
Can LT1013CDR drive capacitive loads directly?
The LT1013CDR is not unity-gain stable with large capacitive loads (>100 pF) without isolation resistance. For driving ADC input capacitors or long cables, a 10–100 Ω series resistor between the LT1013CDR output and the load is recommended to maintain phase margin and prevent oscillation-verified in TI's SLOS018I datasheet Figure 22.
Is LT1013CDR pin-compatible with other members of the LT1013x family?
Yes, LT1013CDR shares identical SOIC-8 pinout and footprint with LT1013D, LT1013DI, and LT1013DM variants. However, electrical specifications differ: LT1013CDR is rated for 0°C to 70°C, while LT1013DI extends to −40°C to 105°C and LT1013DM meets extended military temperature range (−55°C to 125°C).
LT1013CDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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):
- 5 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LT1013CDR FAQ
1.How can I place an order for LT1013CDR through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1013CDR 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 LT1013CDR reliable?
The price and inventory of LT1013CDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1013CDR is usually 5 days.
3.What payment methods are accepted for LT1013CDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1013CDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1013CDR?
LT1013CDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1013CDR 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 LT1013CDR?
For technical support, including LT1013CDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1013CDR requirements.
6.How does Aetrix verify that LT1013CDR is sourced from the original manufacturer or authorized distributors?
All LT1013CDR 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 LT1013CDR meets industry standards.
7.What is the process for return or replacement of LT1013CDR?
All LT1013CDR units undergo pre-shipment inspection (PSI). If there is an issue with LT1013CDR, 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 LT1013CDR part is unused and in its original packaging.
Return procedure for LT1013CDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LT1013CDR Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
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LM358ADR
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LM2904DGKR
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LM324DR
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
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LM324PWR
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LM2902PWR
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LM2902DR
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LM358P
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