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Texas Instruments LT1013DDG4
- Part No.:
- LT1013DDG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1013DDG4.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,882
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Product details
Overview
LT1013DDG4 from Texas Instruments is a dual precision operational amplifier optimized for low-offset, low-drift, single-supply operation in instrumentation and sensor signal conditioning. It delivers 150 µV max input offset voltage (LT1013AM spec), 2 µV/°C max offset drift, 0.5 mA max supply current per amplifier, and rail-to-rail output swing capability down to ground when sinking current - enabling accurate amplification of low-level thermocouple or current-sense signals.
For engineers reviewing the LT1013DDG4 datasheet, LT1013DDG4 pinout, LT1013DDG4 application, or LT1013DDG4 equivalent, this page provides verified specifications, SOIC-8 package layout, real-world use cases in precision analog front-ends, and validated alternative parts with documented performance trade-offs for design-in decisions.
Technical Context
The LT1013DDG4 integrates two matched high-gain op-amps on a single die with phase reversal protection and crossover distortion elimination. Its input stage operates with common-mode voltage extending to VCC− (ground in single-supply mode), and its output can sink current to within millivolts of VCC− while maintaining linearity - critical for low-side current sensing and unipolar sensor interfaces.
It supports both ±15 V dual-supply and +5 V single-supply operation, with guaranteed performance across 0°C to 70°C ambient (LT1013D grade). The device uses bipolar input transistors, delivering 70 MΩ minimum differential input resistance and 4 GΩ common-mode input resistance, ensuring minimal loading on high-impedance sources like thermocouples.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 250 µV max at 25°C (LT1013D grade) - enables sub-millivolt DC accuracy in 12-bit+ systems without trimming |
| Offset Drift | 0.7–5 µV/°C max - limits thermal error to <1.5 mV over 0–70°C ambient range |
| Supply Current | 0.55 mA max per amplifier - allows dual-channel precision gain stages in battery-powered instruments |
| Open-Loop Gain | 0.5 V/µV min (RL = 600 Ω) - ensures >114 dB loop gain at unity gain, supporting stable 0.001% closed-loop accuracy |
| Output Swing | Swings to within 220 mV of ground while sinking 1 mA - supports direct interfacing to ADCs with 0 V reference |
| Input Bias Current | –50 nA max - avoids significant voltage drop across >100 kΩ source impedances |
| Peak-to-Peak Noise | 0.55 µV typical (0.1–10 Hz) - preserves resolution in low-frequency sensor measurements |
Pinout & Package
LT1013DDG4 is housed in an 8-pin SOIC (Small Outline Integrated Circuit) package measuring 4.90 mm × 3.91 mm, with standard JEDEC MS-012AC footprint and gull-wing leads for surface-mount assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1OUT | Output of amplifier channel 1 - drives feedback network or next-stage load |
| 2 | 1IN− | Inverting input of channel 1 - connects to feedback resistor or inverting gain node |
| 3 | 1IN+ | Noninverting input of channel 1 - accepts reference, sensor, or signal source |
| 4 | VCC− | Negative supply terminal - tied to ground in single-supply configurations |
| 5 | 2OUT | Output of amplifier channel 2 - independent output for second signal path |
| 6 | VCC+ | Positive supply terminal - accepts +5 V (single) or +15 V (dual) supply |
| 7 | 2IN− | Inverting input of channel 2 - used for differential or inverting configuration |
| 8 | 2IN+ | Noninverting input of channel 2 - accepts second sensor or reference input |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation with ground-sensing inputs | Enables direct connection to 0 V-referenced sensors (e.g., thermocouples, shunt resistors) without level-shifting circuitry |
| Output swing to ground while sinking current | Allows full-scale utilization of 0–VREF ADC inputs without negative supply or charge-pump biasing |
| Phase reversal protection | Prevents output latch-up during input overvoltage or common-mode excursion beyond rails - improves system robustness |
| Low 0.55 µVpp input noise (0.1–10 Hz) | Supports high-resolution measurement of microvolt-level thermocouple outputs without external filtering penalties |
| 2 µV/°C max offset drift (LT1013AM) | Reduces calibration frequency in industrial temperature monitors operating across wide ambient ranges |
Applications
| Thermocouple Amplifiers | Low-Side Current Measurement |
|---|---|
|
Use Scenario: Amplifying µV-level EMF from Type-K thermocouples in HVAC controllers and industrial ovens. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with cold-junction compensation interface. Use Value: 250 µV max offset and 0.55 µVpp noise preserve <0.5°C measurement accuracy without trimming. |
Use Scenario: Measuring motor phase current via 10 mΩ shunt resistor in BLDC inverters. IC Role / Device Role / Timing Role: Low-side differential amplifier driving 12-bit SAR ADC. Use Value: Output swing to ground enables full 0–3.3 V ADC range utilization with 1 mA sink capability. |
| Instrumentation Amplifier Front-End | Strain Gauge Signal Conditioning |
|
Use Scenario: First-stage gain and buffering for 3-op-amp IA designs in medical ECG front-ends. IC Role / Device Role / Timing Role: Dual-channel matched amplifier providing gain and common-mode rejection enhancement. Use Value: 120 dB channel separation and 114 dB CMRR minimize crosstalk and interference in high-gain biopotential paths. |
Use Scenario: Amplifying Wheatstone bridge outputs from load cells in weighing scales. IC Role / Device Role / Timing Role: Precision buffer and offset-nulling stage before 24-bit delta-sigma ADC. Use Value: 70 MΩ input resistance prevents bridge imbalance errors; 0.7 µV/°C drift maintains calibration stability over temperature. |
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 25 µV max VIO but higher 1.25 mA supply current; no guaranteed single-supply ground-swing output | Preferred in high-speed, low-noise lab equipment; unsuitable for 5 V single-supply sensor nodes requiring rail-to-ground output | Select OP27GP only when VIO <50 µV is mandatory and dual ±15 V supply is available |
| LM358DR | Higher 2 mV max VIO, 7 µV/°C drift, and 300 nA IIB - lacks phase reversal protection and ground-sinking output | Suitable for cost-sensitive consumer electronics where 1% accuracy suffices; not viable for thermocouple or precision current sensing | Choose LM358DR only for non-critical DC amplification with relaxed offset and drift requirements |
Compared with OP27GP and LM358DR, LT1013DDG4 uniquely balances ultra-low drift, single-supply ground compatibility, and phase reversal immunity - making it the only option among the three qualified for untrimmed thermocouple amplifiers and low-side shunt monitoring in industrial control systems.
Availability
LT1013DDG4 is available at Aetrix Electronics and suitable for thermocouple amplifiers, low-side current measurement, and instrumentation amplifier front-ends requiring stable component supply with long-term calibration integrity and industrial temperature range support.
Supply support for LT1013DDG4 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 series was developed specifically for high-accuracy, low-drift analog signal conditioning in test equipment, industrial sensors, and medical instrumentation - emphasizing DC precision, thermal stability, and single-supply usability.
FAQ
What is the maximum operating temperature range for the LT1013DDG4?
The LT1013DDG4 is characterized for operation from 0°C to 70°C ambient temperature, matching the LT1013D grade specification. It is not rated for extended industrial (–40°C to 105°C) or military (–55°C to 125°C) ranges - those require LT1013DI or LT1013M variants. Always verify junction temperature limits using RθJA = 101.6°C/W under actual PCB thermal conditions.
Does the LT1013DDG4 support true rail-to-rail input and output operation?
The LT1013DDG4 supports rail-to-rail output swing only toward ground (VCC−) when sinking current, but its input common-mode range extends to VCC− and up to VCC+ − 2 V - not full rail-to-rail. It does not support input voltages at VCC+ or output swing to VCC+. For full rail-to-rail I/O, consider newer alternatives like OPA2333 or TLV2462.
Can the LT1013DDG4 be used with a single +3.3 V supply?
No - the LT1013DDG4 requires minimum ±5 V dual supply or +5 V single supply (VCC+ = 5 V, VCC− = 0 V) per datasheet Section 6.3. Operation at +3.3 V violates recommended conditions and degrades output swing, gain, and offset performance. Use +5 V regulated supply or select a 3.3 V–compatible op-amp such as MCP6022.
Is the LT1013DDG4 pin-compatible with other dual op-amps in SOIC-8 packages?
The LT1013DDG4 follows standard SOIC-8 dual op-amp pinout (1OUT, 1IN−, 1IN+, VCC−, 2OUT, VCC+, 2IN−, 2IN+) and is pin-compatible with industry-standard devices including LM358, TL072, and OP27 - but functional equivalence requires verification of offset, drift, noise, and output drive capability for each target application.
What is the typical input bias current of the LT1013DDG4 at 25°C?
The typical input bias current of the LT1013DDG4 is –30 nA at 25°C, with a maximum of –50 nA across the 0°C to 70°C operating range. This bipolar-input characteristic necessitates careful PCB layout (guard rings, low-impedance traces) when interfacing with high-impedance sources like piezoelectric sensors or pH electrodes to avoid offset errors.
LT1013DDG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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:
- 18 nA
- Voltage - Input Offset:
- 90 µV
- Current - Supply:
- 320µA (x2 Channels)
- Current - Output / Channel:
- -
- 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
LT1013DDG4 FAQ
1.How can I place an order for LT1013DDG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1013DDG4 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 LT1013DDG4 reliable?
The price and inventory of LT1013DDG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1013DDG4 is usually 5 days.
3.What payment methods are accepted for LT1013DDG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1013DDG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1013DDG4?
LT1013DDG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1013DDG4 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 LT1013DDG4?
For technical support, including LT1013DDG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1013DDG4 requirements.
6.How does Aetrix verify that LT1013DDG4 is sourced from the original manufacturer or authorized distributors?
All LT1013DDG4 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 LT1013DDG4 meets industry standards.
7.What is the process for return or replacement of LT1013DDG4?
All LT1013DDG4 units undergo pre-shipment inspection (PSI). If there is an issue with LT1013DDG4, 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 LT1013DDG4 part is unused and in its original packaging.
Return procedure for LT1013DDG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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