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Analog Devices Inc. LT6013ACS8#PBF
- Part No.:
- LT6013ACS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT6013ACS8#PBF.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,832
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Product details
Overview
LT6013ACS8#PBF from Analog Devices (formerly Linear Technology) is a single, rail-to-rail output precision operational amplifier optimized for low-noise, micro-power sensor interface applications. It delivers 9.5nV/√Hz input voltage noise at 1kHz, ≤35µV max input offset voltage, 250pA max input bias current, and 145µA supply current per amplifier - enabling high-accuracy signal conditioning in battery-powered instrumentation and thermocouple amplifiers.
For engineers reviewing the LT6013ACS8#PBF datasheet, LT6013ACS8#PBF pinout, LT6013ACS8#PBF application, or LT6013ACS8#PBF equivalent, key selection considerations include its AV ≥5 stability requirement, ±18V or 2.7V–36V dual/single-supply operation, 1.4MHz gain bandwidth, 0.2V/µs slew rate, and SO-8 package compatibility with precision analog layouts requiring minimal thermal EMF and leakage control.
Technical Context
The LT6013ACS8#PBF employs a decompensated, non-unity-gain-stable architecture requiring minimum closed-loop gain of 5 to ensure phase margin and stability - unlike unity-gain alternatives such as the LT6010. Its input stage uses on-chip bias current cancellation, resulting in uncorrelated IB+ and IB− and making input resistor balancing counterproductive.
It features rail-to-rail output swing (within 40mV of rails at no load), 120dB min open-loop voltage gain, 107–135dB CMRR over full common-mode range, and robust capacitive load drive up to 500pF at AV = 5. Input protection includes 500Ω series resistors and back-to-back diodes, limiting differential input current to ≤10mA for ≤10V differential inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | ≤35 µV (max, A-grade, 0°C to 70°C) - enables sub-100µV system-level DC accuracy without trimming in precision sensor front-ends. |
| Input Voltage Noise Density | 9.5 nV/√Hz @ 1kHz - supports low-noise amplification of mV-level signals from thermocouples or photodiodes without dominating source noise. |
| Supply Current per Amplifier | 145 µA @ 5V - allows continuous operation for >1 year on a single CR2032 coin cell in portable instrumentation. |
| Gain Bandwidth Product | 1.4 MHz - supports stable closed-loop gains ≥5 up to ~280kHz, suitable for anti-aliasing and active filtering in 100kHz-class data acquisition. |
| Input Bias Current | ±250 pA (max, A-grade, 0°C to 70°C) - permits use with >10MΩ feedback and source impedances while maintaining <1µV error contribution. |
| Output Swing | Rail-to-rail: within 40mV of V+ and V− at no load - maximizes dynamic range in low-voltage (e.g., 3.3V or 5V) single-supply systems. |
| Stability Condition | AV ≥ 5 required - mandates minimum noise gain of 5; prohibits direct unity-gain follower use without external RC stabilization network. |
Pinout & Package
LT6013ACS8#PBF is housed in an 8-lead plastic SOIC (SO-8, narrow 0.150") package with exposed pad not connected internally. Pin 1 is marked by a notch or dot; the underside metal is not electrically tied to any pin.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No Connect | Internally unused; must be left floating or grounded per layout best practices to minimize parasitic coupling. |
| 2 (–IN) | Inverting Input | Differential input node; requires guarded trace routing and symmetric layout to preserve <35µV offset and low EMI susceptibility. |
| 3 (+IN) | Non-Inverting Input | Differential input node; same layout constraints as Pin 2; avoid thermal gradients across pins to prevent thermocouple-induced offset drift. |
| 4 (V–) | Negative Supply Rail | Reference for internal circuitry; connect directly to ground or negative supply with low-inductance path to support rail-to-rail output swing. |
| 5 (OUT) | Amplifier Output | Capable of sourcing/sinking ≥8mA; drives ≥500pF capacitively at AV = 5; add series R (10–50Ω) for improved stability with heavy capacitive loads. |
| 6 (NC) | No Connect | Internally unused; treat identically to Pin 1 - no routing or connection recommended. |
| 7 (V+) | Positive Supply Rail | Accepts 2.7V to 36V (single) or ±18V (dual); decouple with ≥0.1µF ceramic + 10µF tantalum near pin for PSRR optimization. |
| 8 (DNC) | Do Not Connect | Factory test pin; electrically isolated; must remain unconnected in all PCB designs. |
Key Features
| Feature | Design Value |
|---|---|
| Low 1/f noise | 200nVP-P (0.1Hz–10Hz) - minimizes drift and baseline wander in DC-coupled sensor interfaces like strain gauge bridges. |
| Rail-to-rail output | Swings to within 40mV of V+ and V− - preserves >97% of available voltage headroom in 3.3V systems, improving ADC utilization. |
| High CMRR & PSRR | ≥107dB CMRR, ≥112dB PSRR (full temp range) - rejects power supply ripple and common-mode interference in noisy industrial environments. |
| Low input bias current match | 250pA max (A-grade) with uncorrelated IB+ / IB− - eliminates need for matched input resistors and avoids cancellation errors in high-Z transducer interfaces. |
| Wide supply range | 2.7V to ±18V - supports operation from single-cell Li-ion (3.0V) to industrial ±15V rails without redesign. |
| Thermal drift control | 0.8µV/°C max VOS drift - ensures <15µV offset change over –40°C to 85°C, critical for uncalibrated field-deployed sensors. |
Applications
| Thermocouple Amplifier | Precision Photodiode Amplifier |
|---|---|
|
Use Scenario: Amplifying µV-level Seebeck voltages from K-type thermocouples in HVAC and process control sensors. IC Role / Device Role: Primary low-noise, low-drift transimpedance and gain-stage amplifier with cold-junction compensation interface. Use Value: 9.5nV/√Hz noise and ≤35µV offset enable resolution better than 0.1°C without calibration, while 145µA quiescent current extends battery life. |
Use Scenario: Converting nanoamp photocurrent from IR photodiodes in gas analyzers and medical pulse oximeters. IC Role / Device Role: Transimpedance amplifier (TIA) with guarded input and low input bias current to minimize dark-current error. Use Value: 250pA max input bias current prevents >2.5mV error across 10MΩ feedback, and rail-to-rail output maximizes dynamic range into 12-bit ADCs. |
| Micro-Power Sensor Interface | Battery-Powered Precision System |
|
Use Scenario: Signal conditioning for MEMS pressure sensors and piezoresistive bridges in wireless IoT nodes. IC Role / Device Role: Low-power instrumentation amplifier front-end with programmable gain and precision DC coupling. Use Value: 145µA supply current enables multi-year operation on CR2477 cells; 0.8µV/°C drift maintains accuracy across outdoor temperature swings. |
Use Scenario: Front-end analog signal chain in handheld multimeters, portable DMMs, and field calibrators. IC Role / Device Role: Precision buffer, reference amplifier, and active filter component in metrology-grade measurement paths. Use Value: 120dB open-loop gain and 107dB CMRR ensure stable 16-bit+ effective resolution; SO-8 package supports automated assembly and rework. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT6010CS8#PBF | Unity-gain stable, 200pA max IB, 14nV/√Hz noise, shutdown pin included | Supports direct voltage-follower configurations; higher noise limits sub-100µV thermocouple use | Choose when unity-gain buffering is required and 14nV/√Hz noise is acceptable; not drop-in due to different stability and pinout (SHDN pin). |
| LT1881CS8#PBF | Unity-gain stable, 1pA max IB, 9.5nV/√Hz noise, 1000pF CL drive capability | Superior input bias current for >1GΩ sources; lower GBW (10MHz) and higher supply current (1.1mA) | Prefer for ultra-high-impedance pH electrodes or electrophysiology; avoid where 145µA budget or 1.4MHz BW are mandatory. |
Compared with LT6010CS8#PBF and LT1881CS8#PBF, the LT6013ACS8#PBF offers the lowest power and best noise-offset trade-off for fixed-gain ≥5 sensor interfaces, but requires careful gain-setting network design and cannot replace unity-gain stable parts without circuit modification.
Availability
LT6013ACS8#PBF is available at Aetrix Electronics and suitable for thermocouple amplifiers, precision photodiode interfaces, micro-power sensor nodes, battery-powered instrumentation, and industrial analog front-ends requiring stable component supply with guaranteed long-term availability.
Supply support for LT6013ACS8#PBF 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, Inc. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors.
The LT6013 belongs to Linear's precision op amp product line, engineered specifically for low-noise, low-power, high-accuracy signal conditioning in demanding sensor, instrumentation, and industrial measurement applications.
FAQ
What is the minimum stable gain for LT6013ACS8#PBF?
The LT6013ACS8#PBF is decompensated for optimal noise and bandwidth and requires a minimum closed-loop noise gain of 5 for stability. This means configurations like unity-gain followers or gain-of-2 amplifiers are unstable unless externally compensated using an RC network across the inputs. Always verify loop gain ≥5 using the method described in the datasheet Figure 1 before finalizing the LT6013ACS8#PBF design.
Can LT6013ACS8#PBF operate from a single 3.3V supply?
Yes, the LT6013ACS8#PBF supports single-supply operation from 2.7V to 36V. At 3.3V, it delivers rail-to-rail output swing (within ~45mV of each rail), 145µA supply current, and maintains full AC/DC specifications including 9.5nV/√Hz noise and ≤35µV offset (A-grade). Ensure input common-mode range stays between V– + 1V and V+ – 1.2V - i.e., 1.0V to 2.1V for 3.3V operation.
What is the maximum capacitive load LT6013ACS8#PBF can drive?
The LT6013ACS8#PBF can directly drive up to 500pF at a noise gain of 5 without external compensation. Driving larger capacitive loads (e.g., ADC inputs or long cables) requires adding a small isolation resistor (10–50Ω) between the LT6013ACS8#PBF output and the load capacitance to maintain phase margin and prevent peaking or oscillation.
How does LT6013ACS8#PBF handle input overvoltage conditions?
The LT6013ACS8#PBF integrates 500Ω series resistors and back-to-back diodes on both inputs, limiting differential input current to ≤10mA for ≤10V differential voltage. For applications expecting >10V differential transients (e.g., ESD or fault conditions), external series resistors (e.g., 1kΩ per input) are required to keep input current within safe limits and prevent damage.
Is LT6013ACS8#PBF pin-compatible with other SO-8 op amps like LT1001 or OP27?
No - the LT6013ACS8#PBF has a unique pinout: Pins 1 and 6 are NC/DNC, Pin 4 is V–, Pin 7 is V+, and Pin 5 is OUT. It is not pin-compatible with legacy SO-8 op amps. Replacing LT1001 or OP27 with LT6013ACS8#PBF requires PCB layout revision to accommodate the non-standard pin assignment and gain-stability requirements.
LT6013ACS8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.2V/µs
- Gain Bandwidth Product:
- 1.4 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 100 pA
- Voltage - Input Offset:
- 20 µV
- Current - Supply:
- 200µA
- Current - Output / Channel:
- 20 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LT6013ACS8#PBF FAQ
1.How can I place an order for LT6013ACS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6013ACS8#PBF 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 LT6013ACS8#PBF reliable?
The price and inventory of LT6013ACS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6013ACS8#PBF is usually 5 days.
3.What payment methods are accepted for LT6013ACS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6013ACS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6013ACS8#PBF?
LT6013ACS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6013ACS8#PBF 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 LT6013ACS8#PBF?
For technical support, including LT6013ACS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6013ACS8#PBF requirements.
6.How does Aetrix verify that LT6013ACS8#PBF is sourced from the original manufacturer or authorized distributors?
All LT6013ACS8#PBF 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 LT6013ACS8#PBF meets industry standards.
7.What is the process for return or replacement of LT6013ACS8#PBF?
All LT6013ACS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6013ACS8#PBF, 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 LT6013ACS8#PBF part is unused and in its original packaging.
Return procedure for LT6013ACS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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