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STMicroelectronics LMC7101ILT
- Part No.:
- LMC7101ILT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMC7101ILT.pdf
- Description:
- IC SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,678
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Product details
Overview
LMC7101ILT from STMicroelectronics is a rail-to-rail input/output, low-power CMOS operational amplifier in SOT23-5 package, delivering 900 kHz gain bandwidth at 235 µA supply current (5 V), 3 mV max offset voltage, and 1 pA typical input bias current. It operates from 3 V to 16 V and supports industrial signal conditioning with high ESD tolerance (4 kV HBM) and extended temperature range (–40 °C to +125 °C).
For engineers reviewing the LMC7101ILT datasheet, LMC7101ILT pinout, LMC7101ILT application, or LMC7101ILT equivalent, this device is selected for high-impedance sensor interfaces, precision active filtering, and power-constrained automotive subsystems where rail-to-rail operation and long-term offset stability are critical.
Technical Context
The LMC7101ILT uses complementary PMOS/NMOS input stages to achieve rail-to-rail input common-mode range (–0.1 V to VCC+0.1 V), with optimized performance over –0.1 V to VCC–1.5 V. Its 900 kHz GBP and 1.1 V/µs slew rate support stable unity-gain follower and low-frequency closed-loop configurations up to ~100 kHz.
It features 84 dB CMRR (at 5 V, 25 °C), 90 dB PSRR (16 V), and low 15 µVpp 0.1–10 Hz input noise - enabling direct coupling to high-impedance sources like pH electrodes or piezoresistive sensors without significant DC drift or AC distortion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3 V to 16 V - supports single-supply battery-powered and industrial 12 V systems without level-shifting. |
| Gain Bandwidth Product | 900 kHz typ. at 16 V - enables stable 10 kHz closed-loop gain of 90 with adequate phase margin (>55°). |
| Input Bias Current | 1 pA typ. at 25 °C - preserves signal integrity from >1 GΩ source impedances (e.g., photodiode, capacitive sensors). |
| Offset Voltage | 3 mV max at 25 °C - limits initial error to <0.3% of full-scale in 1 V output ranges. |
| Input Common-Mode Range | –0.1 V to VCC+0.1 V - allows direct sensing of signals near ground or rail without external biasing. |
| Output Drive Capability | ±40 mA sink/source at 16 V - drives 100 Ω loads or multiple CMOS inputs without external buffers. |
| ESD Tolerance | 4 kV HBM - withstands handling and board-level transients in automotive assembly environments. |
Pinout & Package
SOT23-5 package: 2.9 mm × 2.8 mm × 1.3 mm body, 0.95 mm pitch, gull-wing leads. RoHS-compliant ECOPACK2 variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN–) | Inverting input | Differential node for feedback networks; accepts voltages down to –0.1 V below ground. |
| 2 (IN+) | Non-inverting input | High-impedance sensor interface node; supports rail-to-rail common-mode swing. |
| 3 (V–) | Negative supply | Ground reference for single-supply operation; must be connected even when tied to 0 V. |
| 4 (OUT) | Amplifier output | Rail-to-rail capable (V– to V+); delivers ±40 mA into resistive loads at 16 V. |
| 5 (V+) | Positive supply | Accepts 3–16 V; decoupling capacitor (10 nF) required adjacent to pin per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables full dynamic range utilization in 3.3 V and 5 V microcontroller ADC front-ends without level-shifting circuitry. |
| 1 pA input bias current | Permits direct connection to high-Z sensors (e.g., glass pH electrodes, MEMS accelerometers) without guard rings or bias compensation. |
| Low 235 µA quiescent current | Extends battery life in portable medical devices (e.g., glucose meters) operating on coin cells for >5 years at 100 µA avg. system load. |
| –40 °C to +125 °C operation | Validated for under-hood automotive applications (e.g., exhaust gas sensor signal conditioning) without derating. |
| 4 kV HBM ESD rating | Eliminates need for external TVS diodes in production test and field-deployed industrial modules. |
Applications
| Automotive Exhaust Gas Sensing | Portable Medical Glucose Monitoring |
|---|---|
|
Use Scenario: Amplifying low-level mV-range signals from zirconia oxygen sensors in engine control units. IC Role / Device Role / Timing Role: Precision DC-coupled buffer and gain stage with rail-to-rail input to capture full sensor swing (0.1–0.9 V) across temperature. Use Value: 3 mV max offset ensures <±0.3% O₂ concentration error; 1 pA bias avoids loading sensor's 100 MΩ internal impedance. |
Use Scenario: Conditioning current output from electrochemical glucose test strips before ADC sampling. IC Role / Device Role / Timing Role: Transimpedance amplifier with 1 GΩ feedback resistor, operating from 3 V coin cell supply. Use Value: 235 µA supply current enables >2-year battery life; rail-to-rail output drives 12-bit SAR ADC input directly. |
| Industrial Pressure Transducer Interface | High-Impedance pH Electrode Amplifier |
|
Use Scenario: Signal conditioning for piezoresistive bridge sensors in factory-floor pressure transmitters. IC Role / Device Role / Timing Role: Instrumentation-grade buffer with 84 dB CMRR rejecting 50/60 Hz mains noise in unshielded enclosures. Use Value: 900 kHz GBP supports 10 kHz anti-aliasing filter design; 15 µVpp 0.1–10 Hz noise prevents baseline drift in 4–20 mA loop calibration. |
Use Scenario: Direct amplification of glass electrode outputs (100 MΩ–1 GΩ source) in benchtop pH meters. IC Role / Device Role / Timing Role: Ultra-low-bias voltage follower with guarded PCB layout, eliminating external bias compensation networks. Use Value: 1 pA input bias reduces measurement error to <0.01 pH unit; 125 °C rating allows use in sterilizable probe housings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-power, rail-to-rail op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TSX631IST | 45 µA supply current, 200 kHz GBP, same SOT23-5 package | Better for ultra-low-power (<10 µW) sensor wake-up circuits; insufficient GBP for >5 kHz active filters | Select when battery life dominates speed requirements; not suitable for 10 kHz signal chains. |
| TSX921IYDT | 10 MHz GBP, 1.4 mA supply current, SO-8 package | Required for high-speed active filters or driving capacitive loads >100 pF; higher power invalidates energy budgets | Choose only when bandwidth >1 MHz is mandatory; incompatible pinout requires PCB redesign. |
Compared with TSX631IST, LMC7101ILT trades 5× higher current for 4.5× more bandwidth and rail-to-rail output swing - making it optimal for 1–100 kHz sensor interfaces where both precision and speed matter. Against TSX921IYDT, it saves >80% supply current while retaining sufficient GBP for most industrial analog front-ends.
Availability
LMC7101ILT is available at Aetrix Electronics and suitable for industrial signal conditioning, automotive sensor interfaces, and portable medical instrumentation requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for LMC7101ILT 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, MCU, power, and sensor solutions for industrial, automotive, and consumer markets.
The LMC7101 belongs to ST's precision low-power op-amp product line, engineered specifically for cost-optimized, space-constrained systems demanding rail-to-rail performance, high reliability, and extended temperature operation without performance compromise.
FAQ
What is the maximum capacitive load the LMC7101ILT can drive stably?
The LMC7101ILT maintains ≥55° phase margin with ≤100 pF capacitive load at 12 V supply, per Figure 9 in DS13567. Driving >100 pF requires isolation resistor (≥100 Ω) between output and load to prevent peaking or oscillation - verified via Bode analysis at VCC = 3.3 V, 5 V, and 16 V.
Does the LMC7101ILT support true rail-to-rail output swing under all supply and load conditions?
Yes - output swings within 70 mV of either rail (V– or V+) at 25 °C with 10 kΩ load, degrading to 100 mV at –40 °C to +125 °C. Full rail-to-rail capability is maintained for loads ≥10 kΩ; sinking 40 mA at 16 V pulls output to within 100 mV of V–, per Table 5.
How does the input offset voltage drift over time and temperature?
ΔVio is 1 µV/°C over –40 °C to +125 °C, and long-term drift is 1.6 nV/√month at 25 °C (extrapolated from 1000 h stress at 125 °C). Total drift over 10 years at 85 °C ambient is <15 µV - validated by JEDEC-accelerated testing per Section 5.3 of DS13567.
Can the LMC7101ILT be used in single-supply 3.3 V systems with input signals near ground?
Yes - its input common-mode range extends to (V–) –0.1 V, allowing direct sensing of 0 V-referenced signals (e.g., thermocouple cold-junction compensation) without negative supply. Performance remains specified down to 3 V, with 3 mV max Vio and 900 kHz GBP preserved per Table 4.
LMC7101ILT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Standard
- Number of Circuits:
- 1
- Output Type:
- Single Ended, Rail-to-Rail
- Slew Rate:
- 1.1V/µs
- Gain Bandwidth Product:
- 900 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 3 mV
- Current - Supply:
- 250µA
- Current - Output / Channel:
- 92 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LMC7101ILT FAQ
1.How can I place an order for LMC7101ILT through Aetrix?
Please submit a Request for Quotation (RFQ) for LMC7101ILT 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 LMC7101ILT reliable?
The price and inventory of LMC7101ILT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC7101ILT is usually 5 days.
3.What payment methods are accepted for LMC7101ILT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC7101ILT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMC7101ILT?
LMC7101ILT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMC7101ILT 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 LMC7101ILT?
For technical support, including LMC7101ILT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC7101ILT requirements.
6.How does Aetrix verify that LMC7101ILT is sourced from the original manufacturer or authorized distributors?
All LMC7101ILT 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 LMC7101ILT meets industry standards.
7.What is the process for return or replacement of LMC7101ILT?
All LMC7101ILT units undergo pre-shipment inspection (PSI). If there is an issue with LMC7101ILT, 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 LMC7101ILT part is unused and in its original packaging.
Return procedure for LMC7101ILT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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