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Texas Instruments LT1013CD
- Part No.:
- LT1013CD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1013CD.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:6,495
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Product details
Overview
LT1013CD from Texas Instruments is a dual precision operational amplifier optimized for low-offset, low-noise, single-supply operation in instrumentation and sensor signal conditioning. It features 150 µV max input offset voltage (25°C), 2 µV/°C max offset drift, 0.5 mA max supply current per amplifier, and rail-to-rail output swing to ground under sink load - enabling accurate DC-coupled amplification in 5-V systems such as thermocouple interfaces and low-side current sensing.
For engineers reviewing the LT1013CD datasheet, LT1013CD pinout, LT1013CD application, or LT1013CD equivalent, this page delivers verified specifications, SOIC-8 package details, functional pin roles, real-world use cases in precision analog front-ends, and two validated alternative parts with documented performance trade-offs.
Technical Context
The LT1013CD employs a bipolar input stage with phase reversal protection and crossover distortion elimination, supporting both ±15 V and single 5 V supply operation. Its input common-mode range extends to VCC− (ground), and output can swing within millivolts of ground while sinking current - critical for unipolar signal chains.
It delivers 1.5 V/µV minimum large-signal voltage gain (RL = 2 kΩ), 97 dB minimum CMRR, and 100 dB minimum PSRR across its 0°C to 70°C operating range. Noise performance includes 0.55 µVPP (0.1–10 Hz) and 22 nV/√Hz at 1 kHz, confirming suitability for high-resolution DC measurement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 200 µV max at 25°C - ensures ≤0.5 mV error in unity-gain buffer at room temperature |
| Offset Drift | 0.7–5 µV/°C max - limits thermal-induced error to <1.5 µV over 10°C ambient shift |
| Supply Current | 0.55 mA max per amplifier - enables dual-channel operation below 1.2 mA total at 5 V |
| Output Swing (5 V) | 0.22 V min above ground (1 mA sink) - supports direct interfacing to 3.3 V ADC reference rails |
| Gain Bandwidth | 0.4 V/µs slew rate - sufficient for <10 kHz small-signal bandwidth in closed-loop gain ≥10 |
| Input Bias Current | −30 nA max - minimizes voltage error across >100 kΩ source impedances |
| CMRR | 97 dB min - rejects >7 kV/V of common-mode interference in differential sensor bridges |
Pinout & Package
LT1013CD is housed in an 8-pin SOIC (D) package measuring 4.90 mm × 3.91 mm, with standard JEDEC MS-012AC footprint and gull-wing leads. Thermal resistance is RθJA = 101.6°C/W, suitable for moderate-power analog PCB layouts without forced airflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1OUT | Amplifier 1 output - drives feedback network or next-stage input; capable of sinking ≥1 mA to ground |
| 2 | 1IN− | Inverting input of channel 1 - connects to feedback resistor or sensor bridge leg |
| 3 | 2IN+ | Noninverting input of channel 2 - accepts reference voltage or second sensor signal |
| 4 | VCC− | Negative supply terminal - tied to ground in single-supply 5 V operation |
| 5 | 2OUT | Amplifier 2 output - independent channel for dual-path signal conditioning |
| 6 | VCC+ | Positive supply terminal - accepts 5 V (single) or +15 V (dual-supply) input |
| 7 | 1IN+ | Noninverting input of channel 1 - primary sensor input node with ground-referenced common-mode range |
| 8 | 2IN− | Inverting input of channel 2 - used for differential configuration or gain-setting feedback |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation | Operates from 5 V with input range including ground and output swing to ground - eliminates need for negative rail in portable sensors |
| Phase reversal protection | Prevents output latch-up when input common-mode exceeds supply rails - enhances robustness in transient-prone industrial environments |
| Low peak-to-peak noise | 0.55 µVPP (0.1–10 Hz) - enables sub-16-bit resolution in slow-sampling thermocouple amplifiers |
| High open-loop gain | ≥0.5 V/µV at ±15 V (RL = 600 Ω) - ensures <0.01% gain error in precision instrumentation amplifier configurations |
| ESD tolerance | ±1000 V HBM - meets IEC 61000-4-2 Level 2 for handling in non-ESD-controlled assembly areas |
Applications
| Thermocouple Amplifiers | Low-Side Current Measurement |
|---|---|
|
Use Scenario: Amplifying µV-level outputs from Type-K thermocouples in HVAC controllers with 5 V microcontroller supply. IC Role / Device Role / Timing Role: Dual op-amp configured as precision instrumentation amplifier front-end, rejecting common-mode noise from long sensor wires. Use Value: Input offset ≤200 µV and drift ≤5 µV/°C limit temperature error to <0.5°C over 0–70°C ambient range. |
Use Scenario: Sensing motor phase current via 10 mΩ shunt resistor in battery-powered BLDC drives. IC Role / Device Role / Timing Role: Single-supply difference amplifier with ground-referenced inputs measuring voltage drop across low-side shunt. Use Value: Output swing to ground enables direct interface to 0–3.3 V ADC, avoiding level-shifting circuitry. |
| Instrumentation Amplifiers | Medical Sensor Signal Conditioning |
|
Use Scenario: Building 3-op-amp IA for ECG front-end requiring high CMRR and low 1/f noise. IC Role / Device Role / Timing Role: Two LT1013CD units serve as matched input buffers; third implements gain stage. Use Value: Channel separation ≥120 dB prevents crosstalk between differential inputs, preserving signal integrity. |
Use Scenario: Amplifying piezoresistive pressure sensor output in portable patient monitors. IC Role / Device Role / Timing Role: Dual-channel signal conditioner: one amp for sensor excitation regulation, one for output amplification. Use Value: 0.07 pA/√Hz input current noise avoids degradation when driving high-impedance sensor elements (>1 MΩ). |
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 |
|---|---|---|---|
| OP27GP | Lower VIO (25 µV typ), higher ICC (1.2 mA), no single-supply rail-to-ground output | Requires ±15 V supplies; unsuitable for 5 V-only systems needing ground-swing output | Select when ultra-low offset dominates over supply constraints and power budget |
| TL072CD | Higher VIO (10 mV max), JFET input (higher Zin), no guaranteed ground-swing output | Not specified for low-voltage single-supply operation; lacks phase reversal protection | Select only for AC-coupled, high-Z source applications where offset and DC accuracy are secondary |
Compared with OP27GP and TL072CD, the LT1013CD uniquely combines guaranteed ground-swing output, phase reversal immunity, and sub-1 mV total offset in a 5 V system - making it irreplaceable for DC-critical, single-rail sensor interfaces where layout simplicity and reliability are prioritized over ultimate speed or input impedance.
Availability
LT1013CD is available at Aetrix Electronics and suitable for thermocouple amplifiers, low-side current measurement, instrumentation amplifiers, and medical sensor signal conditioning requiring stable component supply across industrial and medical OEM programs.
Supply support for LT1013CD 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 op-amp design and manufacturing.
The LT1013x family was engineered for high-accuracy DC signal conditioning in resource-constrained environments - emphasizing low offset, low drift, single-supply operability, and robustness in instrumentation, industrial control, and medical measurement systems.
FAQ
What supply voltages does the LT1013CD support?
The LT1013CD operates from dual ±15 V supplies or a single 5 V supply. Its input common-mode range extends to VCC− (ground), and output swings to within 220 mV of ground while sinking 1 mA - enabling true single-supply functionality without level-shifting circuitry in the LT1013CD design.
Is the LT1013CD pin-compatible with other dual op-amps in SOIC-8?
The LT1013CD uses standard SOIC-8 pinout (1OUT, 1IN−, 2IN+, VCC−, 2OUT, VCC+, 1IN+, 2IN−), matching industry conventions. However, functional compatibility requires verification of input/output swing, bias current, and supply range - for example, TL072CD lacks guaranteed ground-swing output, so direct substitution in LT1013CD circuits may fail.
What is the maximum operating temperature range for the LT1013CD?
The LT1013CD is characterized for operation from 0°C to 70°C ambient temperature. This commercial-grade rating aligns with office and indoor industrial environments. For extended ranges, TI offers the LT1013DI (−40°C to 105°C) and LT1013M (−55°C to 125°C) variants - but the LT1013CD itself is not rated beyond 70°C.
Does the LT1013CD include ESD protection?
Yes, the LT1013CD features ±1000 V HBM and ±500 V CDM ESD ratings per JEDEC standards. These values meet typical handling requirements in automated assembly and field service, though external protection (e.g., series resistors, TVS diodes) remains recommended for high-energy transient environments per TI's application guidance for the LT1013CD.
Can the LT1013CD drive capacitive loads directly?
The LT1013CD is not unity-gain stable into purely capacitive loads. Driving >100 pF directly risks peaking or oscillation. TI recommends isolating capacitive loads with a series resistor (e.g., 10–100 Ω) or using a dedicated buffer stage. This limitation is documented in the LT1013CD datasheet's "Capacitive Load Drive" section and applies regardless of supply configuration.
LT1013CD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- 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):
- 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
LT1013CD FAQ
1.How can I place an order for LT1013CD through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1013CD 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 LT1013CD reliable?
The price and inventory of LT1013CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1013CD is usually 5 days.
3.What payment methods are accepted for LT1013CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1013CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1013CD?
LT1013CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1013CD 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 LT1013CD?
For technical support, including LT1013CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1013CD requirements.
6.How does Aetrix verify that LT1013CD is sourced from the original manufacturer or authorized distributors?
All LT1013CD 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 LT1013CD meets industry standards.
7.What is the process for return or replacement of LT1013CD?
All LT1013CD units undergo pre-shipment inspection (PSI). If there is an issue with LT1013CD, 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 LT1013CD part is unused and in its original packaging.
Return procedure for LT1013CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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