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Texas Instruments LMV551QDCKRQ1
- Part No.:
- LMV551QDCKRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LMV551QDCKRQ1.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,340
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Product details
Overview
LMV551QDCKRQ1 from Texas Instruments is an automotive-grade, micropower rail-to-rail output operational amplifier optimized for low-voltage, battery-powered systems. It delivers 3 MHz unity-gain bandwidth, 37 µA supply current (typ), 93 dB CMRR, 1 V/µs slew rate, and 70 mV rail-to-rail output swing at 100-kΩ load - enabling precision signal conditioning in space-constrained automotive sensor front-ends and portable instrumentation.
For engineers reviewing the LMV551QDCKRQ1 datasheet, LMV551QDCKRQ1 pinout, LMV551QDCKRQ1 application, or LMV551QDCKRQ1 equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification (−40°C to +125°C), ultra-low quiescent current across 2.7–5.5 V supply range, rail-to-rail input common-mode range extending below ground, and SC70-5 package compatibility with high-density PCB layouts.
Technical Context
The LMV551QDCKRQ1 employs TI's VIP50 process to achieve a 3 MHz gain-bandwidth product while maintaining only 37 µA supply current - yielding one of the highest bandwidth-to-power ratios among automotive op amps. Its unity-gain stable architecture supports standard inverting/non-inverting configurations without external compensation under typical resistive loads.
It features rail-to-rail output swing (70 mV from rail at 100-kΩ, 5 V) and input common-mode voltage range extending to V− (ground in single-supply operation), enabling direct interfacing with low-voltage sensors and ADC drivers. Phase margin remains ≥75° with 10 kΩ load and 20 pF capacitive load, but external isolation or in-loop compensation is required for CL > 100 pF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Unity-Gain Bandwidth | 3 MHz - supports active filtering up to ~300 kHz with adequate phase margin |
| Supply Current | 37 µA (typ at 5 V) - enables multi-year battery life in always-on sensor nodes |
| Input Offset Voltage | ±3 mV (max, −40°C to +125°C) - ensures <100 µV error in 33× gain sensor amplifiers |
| CMRR | 93 dB (typ at 5 V) - rejects common-mode noise from noisy automotive power rails |
| Output Swing | 70 mV from rail (high), 60 mV from rail (low) at 100-kΩ, 5 V - maximizes dynamic range in 5 V single-supply systems |
| Input Noise Density | 70 nV/√Hz (1 kHz) - preserves SNR in low-level thermistor or bridge sensor amplification |
| ESD Rating | HBM ±2000 V, CDM ±1000 V - meets AEC-Q100 stress requirements for automotive assembly |
Pinout & Package
The LMV551QDCKRQ1 is housed in a 5-pin SC70 (DCK) package measuring 2.00 mm × 1.25 mm - optimized for minimal board area in compact automotive ECUs and wearable sensor modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN (Pin 1) | Non-inverting input | Accepts signals down to V− (ground); enables single-supply sensor biasing without level-shifting |
| V− (Pin 2) | Negative supply | Connects to ground in single-supply operation; supports true ground-sensing capability |
| −IN (Pin 3) | Inverting input | Used in transimpedance or inverting gain configurations; high impedance (>10⁹ Ω) |
| OUT (Pin 4) | Amplifier output | Rail-to-rail swing enables full utilization of 12-bit+ ADC input range |
| V+ (Pin 5) | Positive supply | Operates from 2.7 V to 5.5 V; internal regulation ensures stable bias over wide VIN range |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for −40°C to +125°C ambient operation - suitable for engine bay and ADAS sensor modules |
| Rail-to-rail output stage | Delivers 4.93 Vpp swing on 5 V supply into 100-kΩ - eliminates need for level-shifting before ADC |
| Input common-mode range to V− | Enables direct connection of grounded sensors (e.g., RTDs, strain gauges) without external bias networks |
| Ultra-low 1/f noise corner | 4 Hz - maintains accuracy in DC-coupled, low-frequency sensor signal chains (e.g., pressure, temperature) |
| SC70-5 footprint | 2.00 mm × 1.25 mm body - reduces layout area by >50% vs SOIC-8, minimizing trace inductance and EMI pickup |
Applications
| Automotive Cabin Sensors | Portable Medical Monitors |
|---|---|
Use Scenario: Signal conditioning for MEMS-based cabin air quality sensors (CO₂, VOC) in HVAC control units. IC Role / Device Role / Timing Role: Low-noise preamplifier driving 12-bit SAR ADC; operates continuously from 12 V battery via 3.3 V LDO. Use Value: 70 nV/√Hz input noise and rail-to-rail output preserve microvolt-level sensor resolution across full temperature range. |
Use Scenario: Amplifying weak bio-potential signals (ECG, pulse oximetry) in handheld patient monitors. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier with gain = 100; powered from coin-cell battery. Use Value: 37 µA quiescent current extends battery life beyond 12 months; ground-sensing input simplifies electrode biasing. |
| Industrial IoT Node Front-End | Robotics Joint Torque Sensing |
Use Scenario: Conditioning outputs from 4–20 mA loop-powered pressure transmitters in smart factory gateways. IC Role / Device Role / Timing Role: Precision I/V converter and buffer feeding isolated sigma-delta ADC. Use Value: 93 dB CMRR rejects common-mode noise from shared industrial power rails; 3 MHz BW supports fast transient detection. |
Use Scenario: Amplifying millivolt-level Wheatstone bridge outputs from strain-gauge torque sensors in collaborative robot joints. IC Role / Device Role / Timing Role: Single-supply, ground-referenced differential amplifier with gain = 500. Use Value: Input CMVR extending to V− allows direct bridge center-tap grounding; 37 µA IS enables thermal-safe operation in enclosed joint housings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TSV911QDBVRQ1 | Higher supply current (80 µA typ), 8 MHz GBW, same SC70-5 package and AEC-Q100 Grade 1 rating | Better suited for higher-speed active filters or faster-settling sensor interfaces where power budget allows | Select when >3 MHz bandwidth is required and 2× quiescent current is acceptable |
| MCP6001T-E/OT | Lower bandwidth (1 MHz), 1 µA supply current, non-automotive grade (industrial temp only), SOT-23-5 | Targeted at cost-sensitive, non-safety-critical portable electronics with relaxed performance and qualification needs | Select only for non-automotive designs where AEC-Q100 compliance is unnecessary and ultra-low power dominates |
Compared with TSV911QDBVRQ1, LMV551QDCKRQ1 trades bandwidth for 54% lower supply current - critical for always-on automotive subsystems. Against MCP6001T-E/OT, it adds AEC-Q100 qualification and 3× bandwidth at 37× higher quiescent current, making it the only viable choice for qualified, high-fidelity automotive sensing.
Availability
LMV551QDCKRQ1 is available at Aetrix Electronics and suitable for automotive cabin control, portable medical instrumentation, and industrial IoT sensor nodes requiring stable component supply with full AEC-Q100 traceability and long-term lifecycle support.
Supply support for LMV551QDCKRQ1 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 designing analog ICs, embedded processors, and system solutions for automotive, industrial, and personal electronics markets.
The LMV551QDCKRQ1 belongs to TI's automotive-qualified precision op amp portfolio, engineered specifically for low-power, high-accuracy signal conditioning in harsh-temperature environments such as engine control, ADAS, and cabin sensing systems.
FAQ
What is the operating temperature range for the LMV551QDCKRQ1?
The LMV551QDCKRQ1 is qualified per AEC-Q100 Grade 1, supporting continuous operation from −40°C to +125°C ambient temperature. This range is validated across all electrical parameters in the datasheet, including input offset voltage, CMRR, and output swing - making LMV551QDCKRQ1 suitable for under-hood and ADAS applications where thermal stability is critical.
Does the LMV551QDCKRQ1 support rail-to-rail input?
The LMV551QDCKRQ1 features rail-to-rail *output*, but its input common-mode voltage range extends only to V− (ground) and up to 4.1 V at 5 V supply - not fully rail-to-rail on the high side. It does *not* accept inputs at V+, so high-side sensing above 4.1 V requires external attenuation or level-shifting before applying to LMV551QDCKRQ1.
Can the LMV551QDCKRQ1 drive capacitive loads directly?
The LMV551QDCKRQ1 is stable with ≤100 pF capacitive load at unity gain. For loads >100 pF (e.g., LCD panels or long cables), external compensation is required - either an isolation resistor (5–50 Ω) in series with the output or in-loop RC feedback. Uncompensated use with >100 pF may cause oscillation or overshoot, degrading signal integrity in LMV551QDCKRQ1-based circuits.
What is the maximum recommended supply voltage for the LMV551QDCKRQ1?
The absolute maximum supply voltage (V+ − V−) for LMV551QDCKRQ1 is 6 V. However, the recommended operating range is 2.7 V to 5.5 V. Operating at 6 V risks permanent damage and voids AEC-Q100 qualification. For robust automotive design, LMV551QDCKRQ1 should be powered from a well-regulated 5.0 V or 3.3 V rail with appropriate decoupling.
Is the LMV551QDCKRQ1 pin-compatible with other SC70-5 op amps?
LMV551QDCKRQ1 uses the standard SC70-5 pinout (Pin 1 = +IN, Pin 2 = V−, Pin 3 = −IN, Pin 4 = OUT, Pin 5 = V+), matching industry conventions. However, functional compatibility depends on bandwidth, supply current, and input structure - e.g., while pinout matches MCP6001T-E/OT, LMV551QDCKRQ1 offers 3× higher GBW and AEC-Q100 qualification, but draws 37× more current.
LMV551QDCKRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1V/µs
- Gain Bandwidth Product:
- 3 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 20 nA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 34µA
- Current - Output / Channel:
- 25 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
LMV551QDCKRQ1 FAQ
1.How can I place an order for LMV551QDCKRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV551QDCKRQ1 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 LMV551QDCKRQ1 reliable?
The price and inventory of LMV551QDCKRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV551QDCKRQ1 is usually 5 days.
3.What payment methods are accepted for LMV551QDCKRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV551QDCKRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV551QDCKRQ1?
LMV551QDCKRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV551QDCKRQ1 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 LMV551QDCKRQ1?
For technical support, including LMV551QDCKRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV551QDCKRQ1 requirements.
6.How does Aetrix verify that LMV551QDCKRQ1 is sourced from the original manufacturer or authorized distributors?
All LMV551QDCKRQ1 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 LMV551QDCKRQ1 meets industry standards.
7.What is the process for return or replacement of LMV551QDCKRQ1?
All LMV551QDCKRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LMV551QDCKRQ1, 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 LMV551QDCKRQ1 part is unused and in its original packaging.
Return procedure for LMV551QDCKRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMV551QDCKRQ1 Tags
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