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Texas Instruments LM6211 MDC
- Part No.:
- LM6211 MDC
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- Die
- Datasheet:
-
LM6211 MDC.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT DIESALE
- Quantity:
- Payment:
- Shipping:
Inventory:3,228
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Product details
Overview
LM6211 MDC from Texas Instruments is a low-noise, rail-to-rail output (RRO), CMOS-input operational amplifier optimized for high-voltage, low-distortion signal conditioning. It operates from 5V to 24V single supply, delivers 20 MHz unity-gain bandwidth, 5.5 nV/√Hz input voltage noise at 10 kHz, and 5.6 V/μs slew rate - enabling precision active loop filters in wideband PLL systems.
For engineers reviewing the LM6211 MDC datasheet, LM6211 MDC pinout, LM6211 MDC application, or LM6211 MDC equivalent, this page provides verified specifications, validated SOT-23 pin mapping, real-world use cases in PLL loop filtering and strain gauge amplification, and two confirmed alternative op amps with documented functional trade-offs.
Technical Context
The LM6211 MDC employs a CMOS input stage with 2.3 pA typical input bias current and 5.5 pF input capacitance, enabling high-impedance sensor interfacing without gain peaking. Its ground-sensing input common-mode range (0 V to VS − 1.5 V) supports true single-supply operation down to the negative rail.
Internally compensated for unity-gain stability, it maintains ≥40° phase margin up to 100 pF capacitive load (RL = 2 kΩ, VS = 24 V). Output stage delivers rail-to-rail swing - within 150 mV of rails at 10 kΩ load - and short-circuit protection (25 mA sourcing / 38 mA sinking) without latch-up.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 5 V to 24 V single supply - enables direct integration into industrial 24 V control rails and portable 5 V systems without level-shifting. |
| Unity-Gain Bandwidth | 20 MHz - supports stable closed-loop gain configurations up to 10× at 2 MHz, critical for fast-settling active PLL filters. |
| Input Voltage Noise | 5.5 nV/√Hz @ 10 kHz - directly limits in-band phase noise contribution in VCO tuning voltage paths. |
| Input Bias Current | 2.3 pA max @ 25°C - prevents DC error accumulation in high-Z feedback networks (e.g., >10 MΩ loop filter resistors). |
| Slew Rate | 5.6 V/μs - ensures distortion-free reproduction of fast transient signals in microphone preamps and active filters. |
| Total Harmonic Distortion | 0.01% @ 1 kHz, 600 Ω load - meets fidelity requirements for audio-grade microphone amplifiers and instrumentation front-ends. |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive sensors and industrial motor control environments. |
Pinout & Package
LM6211 MDC is housed in a 5-pin SOT-23 package (DC package code), with 1.6 mm × 2.9 mm footprint and 1.1 mm height. Thermal resistance θJA = 178°C/W enables operation at full rating in compact PCB layouts without forced airflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - Output | Amplified signal output | Rail-to-rail swing (≤150 mV from rails @ 10 kΩ) maximizes dynamic range for VCO tuning voltage generation. |
| 2 - Inverting Input (−) | Inverting input node | Low 5.5 pF input capacitance minimizes interaction with high-value feedback resistors in transimpedance configurations. |
| 3 - Non-Inverting Input (+) | Non-inverting input node | Ground-sensing capability (CMVR includes 0 V) allows direct connection to single-ended sensor outputs referenced to system ground. |
| 4 - V− | Negative supply terminal | Connects to system ground in single-supply operation; absolute max rating −0.3 V prevents damage during power sequencing. |
| 5 - V+ | Positive supply terminal | Accepts 5–24 V; internal overvoltage clamp protects against 25 V transients per Absolute Maximum Ratings. |
Key Features
| Feature | Design Value |
|---|---|
| Low 1/f noise corner | 400 Hz - reduces low-frequency drift in strain gauge bridges and DC-coupled sensor interfaces. |
| Rail-to-rail output | Swings within 150 mV of both rails @ 10 kΩ - extends usable tuning voltage range for wideband VCOs in PLL synthesizers. |
| Ultra-low input current | 2.3 pA max - eliminates offset error in high-impedance photodiode transimpedance amplifiers and piezoelectric sensor buffers. |
| Stable with capacitive loads | ≥40° phase margin @ 100 pF (RL = 2 kΩ) - permits direct driving of ADC input capacitors or long PCB traces without external isolation resistors. |
| High PSRR & CMRR | 98 dB PSRR / 105 dB CMRR @ 24 V - rejects supply ripple and common-mode interference in noisy industrial power domains. |
Applications
| PLL Active Loop Filter | Strain Gauge Amplifier |
|---|---|
|
Use Scenario: Active third-order loop filter in wideband frequency synthesizers (e.g., LMX2430-based RF modules) requiring extended VCO tuning range beyond passive filter limits. IC Role / Device Role / Timing Role: Precision voltage buffer and gain stage that converts phase detector error current into clean, low-noise VCO tuning voltage with minimal added phase jitter. Use Value: 5.5 nV/√Hz noise density and 2.3 pA input bias current reduce in-band phase noise by >3 dB versus bipolar-input alternatives, enabling cleaner spectral purity in base station transceivers. |
Use Scenario: Instrumentation-grade bridge amplifier for quarter-bridge strain gauges in structural health monitoring systems operating at −40°C to +125°C. IC Role / Device Role / Timing Role: Low-drift, high-input-impedance front-end amplifier that conditions microvolt-level differential signals while rejecting common-mode noise from 24 V excitation rails. Use Value: 0.01% THD at 1 kHz and 85 dB CMRR ensure accurate strain measurement resolution below 10 με, even with 10 MΩ bridge arm impedances. |
| Low-Noise Microphone Preamplifier | Active Bandpass Filter for Sensor Signal Conditioning |
|
Use Scenario: First-stage preamplifier in battery-powered acoustic sensors where EMI immunity and low self-noise are critical for detecting sub-50 dB SPL signals. IC Role / Device Role / Timing Role: High-gain, low-noise voltage amplifier with rail-to-rail output driving anti-aliasing filters prior to 24-bit sigma-delta ADCs. Use Value: 5.5 nV/√Hz input noise and 20 MHz bandwidth preserve signal integrity across 20 Hz–20 kHz audio band, achieving >110 dB SNR with 10 kΩ source impedance. |
Use Scenario: 2nd-order active bandpass filter in industrial vibration sensors targeting 100 Hz–5 kHz fault detection bands, powered from 24 V fieldbus supplies. IC Role / Device Role / Timing Role: Unity-gain-stable op amp implementing high-Q filtering with minimal component count, leveraging low input capacitance to avoid gain peaking. Use Value: 5.5 pF input capacitance allows use of 100 kΩ feedback resistors without destabilizing poles, enabling precise center frequency control with ±0.5% tolerance ceramic capacitors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA1611AIDBVR | Lower noise (1.1 nV/√Hz), but narrower supply range (±2.25 V to ±18 V), higher quiescent current (1.6 mA), and no rail-to-rail output. | Better suited for dual-supply audio line drivers; unsuitable for single-supply 24 V PLL loop filters due to output headroom limitations. | Select OPA1611AIDBVR only when ultra-low noise dominates over supply flexibility and output swing requirements. |
| ADA4898-1ARMZ | Higher slew rate (275 V/μs), wider bandwidth (290 MHz), but higher input bias current (1.2 μA) and noise (1.1 nV/√Hz), limited to 12 V max supply. | Optimized for high-speed data acquisition; incompatible with 24 V industrial rails and high-impedance sensor nodes due to bias current-induced offset. | Choose ADA4898-1ARMZ for high-frequency pulse amplification, not for low-drift, high-voltage precision analog signal chains. |
Compared with OPA1611AIDBVR and ADA4898-1ARMZ, LM6211 MDC uniquely balances 24 V operation, rail-to-rail output, sub-6 nV/√Hz noise, and picoampere input bias - making it the only viable option for single-supply, wide-tuning-range PLL active filters and high-Z sensor interfaces.
Availability
LM6211 MDC is available at Aetrix Electronics and suitable for industrial motor control, RF synthesizer design, and precision sensor signal conditioning requiring stable component supply across extended temperature ranges and high-voltage operation.
Supply support for LM6211 MDC 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 expertise in high-performance op amp design and industrial-grade reliability validation.
LM6211 MDC belongs to TI's precision low-noise op amp product line, engineered specifically for demanding applications requiring wide supply range, rail-to-rail output, and ultra-low input bias current - such as active PLL loop filters and high-impedance sensor front-ends.
FAQ
What is the maximum capacitive load the LM6211 MDC can drive without external compensation?
The LM6211 MDC maintains ≥40° phase margin with up to 100 pF capacitive load when configured as a unity-gain buffer with RL = 2 kΩ and VS = 24 V. Beyond 100 pF, external compensation (e.g., isolation resistor or in-the-loop RC network) is required to prevent oscillation. This limit is verified in Figure 30 and Figure 31 of the official SNOSAH2C datasheet.
Does the LM6211 MDC support true single-supply operation with input signals at ground potential?
Yes. The LM6211 MDC features a ground-sensing input common-mode voltage range (0 V to VS − 1.5 V), allowing the non-inverting input (Pin 3) to accept signals referenced directly to system ground in single-supply configurations. This is explicitly confirmed in the Operating Ratings table and Application Notes section of the datasheet.
What is the guaranteed input offset voltage specification for LM6211 MDC at 24 V supply?
At VS = 24 V and TA = 25°C, the LM6211 MDC has a guaranteed input offset voltage of ±2.7 mV (maximum) and ±2.5 mV (typical), as specified in the 24V Electrical Characteristics table. Over the full −40°C to +125°C range, the maximum is ±3.0 mV, with average drift of ±2 μV/°C.
Can LM6211 MDC be used in transimpedance amplifier configurations for photodiode sensing?
Yes. With its 2.3 pA input bias current, 5.5 pF input capacitance, and low 1/f noise corner (400 Hz), the LM6211 MDC is well-suited for transimpedance amplifiers driving high-impedance photodiodes. The low input capacitance avoids gain peaking with large feedback resistors (e.g., 10–100 MΩ), preserving stability and bandwidth as detailed in the "Low Input Capacitance" Application Note.
Is LM6211 MDC pin-compatible with other SOT-23 op amps like LMV721 or TLV2461?
No. While all are 5-pin SOT-23 op amps, LM6211 MDC uses standard op amp pinout (Pin 1 = Output, Pin 2 = Inverting Input, Pin 3 = Non-Inverting Input, Pin 4 = V−, Pin 5 = V+), but LMV721 and TLV2461 follow different pin assignments (e.g., TLV2461 places V+ on Pin 8 in SOIC; SOT-23 variants differ). Direct replacement requires board-level verification - LM6211 MDC is not a drop-in substitute.
LM6211 MDC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- Die
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 5.6V/µs
- Gain Bandwidth Product:
- 20 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 2 pA
- Voltage - Input Offset:
- 250 µV
- Current - Supply:
- 1.05mA
- Current - Output / Channel:
- 38 mA
- Voltage - Supply Span (Min):
- 5 V
- Voltage - Supply Span (Max):
- 24 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Diesale
LM6211 MDC FAQ
1.How can I place an order for LM6211 MDC through Aetrix?
Please submit a Request for Quotation (RFQ) for LM6211 MDC 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 LM6211 MDC reliable?
The price and inventory of LM6211 MDC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM6211 MDC is usually 5 days.
3.What payment methods are accepted for LM6211 MDC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM6211 MDC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM6211 MDC?
LM6211 MDC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM6211 MDC 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 LM6211 MDC?
For technical support, including LM6211 MDC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM6211 MDC requirements.
6.How does Aetrix verify that LM6211 MDC is sourced from the original manufacturer or authorized distributors?
All LM6211 MDC 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 LM6211 MDC meets industry standards.
7.What is the process for return or replacement of LM6211 MDC?
All LM6211 MDC units undergo pre-shipment inspection (PSI). If there is an issue with LM6211 MDC, 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 LM6211 MDC part is unused and in its original packaging.
Return procedure for LM6211 MDC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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