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STMicroelectronics LMV821ICT
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- Part No.:
- LMV821ICT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LMV821ICT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,585
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Product details
Overview
LMV821ICT from STMicroelectronics is a single-channel, rail-to-rail output, low-power operational amplifier with shutdown functionality, designed for precision signal conditioning in space-constrained, battery-powered systems. It delivers 5.5 MHz gain bandwidth, 0.8 mV max input offset voltage (at 25°C), 400 µA max supply current at 5 V, and operates across –40°C to +125°C - enabling use in automotive sensor front-ends and portable medical monitors.
For engineers reviewing the LMV821ICT datasheet, LMV821ICT pinout, LMV821ICT application, or LMV821ICT equivalent, key selection criteria include its 50 nA shutdown current, SC70-5 package footprint, rail-to-rail output swing under 2 kΩ load, and guaranteed performance over extended temperature without calibration.
Technical Context
The LMV821ICT integrates a precision CMOS input stage with rail-to-rail output stage, supporting operation from 2.5 V to 5.5 V supply. Its input common-mode range extends from VCC– – 0.2 V to VCC+ – 1 V, enabling ground-sensing capability without phase reversal.
It features an active shutdown pin (SHDN) that places the amplifier in high-impedance state with ≤50 nA quiescent current at 25°C; turn-on/turn-off times are 300 ns and 20 ns respectively into 2 kΩ load, making it suitable for power-gated signal chains in automotive ECUs and wearable sensors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.5 V to 5.5 V - supports direct connection to Li-ion single-cell or regulated 3.3 V/5 V rails without level-shifting. |
| Gain Bandwidth Product | 5.5 MHz - enables stable unity-gain buffer or 2nd-order active filtering up to ~500 kHz with adequate phase margin. |
| Input Offset Voltage | 0.8 mV max at 25°C - reduces DC error in precision transducer amplification (e.g., thermopile or strain gauge) without trimming. |
| Shutdown Current | 50 nA max at 25°C - extends battery life in intermittent-sampling applications such as portable ECG or tire pressure sensors. |
| Rail-to-Rail Output Swing | Within 150 mV of both rails into 2 kΩ - maximizes dynamic range when interfacing with 12-bit SAR ADCs powered from same supply. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive use and industrial edge nodes without derating. |
| ESD Rating (HBM) | 4 kV (except SHDN pin), 3.5 kV on SHDN - withstands handling and board-level ESD events in production and field environments. |
Pinout & Package
LMV821ICT is housed in a 5-pin SC70-5 (SOT323-5) package - ultra-compact (2.0 × 1.25 × 0.9 mm), surface-mount, lead-free, and RoHS-compliant. The exposed pad is not electrically connected and may be left floating or grounded for thermal enhancement.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (IN–) | Differential input node; accepts signals within VCC– – 0.2 V to VCC+ – 1 V common-mode range. |
| 2 | Non-inverting Input (IN+) | Differential input node; identical common-mode range and bias current (≤120 nA) as IN–. |
| 3 | Output (OUT) | Rail-to-rail capable output; sinks/sources ≥26 mA at 2.7 V, high-impedance during shutdown. |
| 4 | Ground (VCC–) | Power return reference; must be low-impedance path to minimize noise coupling and ensure stability. |
| 5 | Shutdown (SHDN) | Active-low enable: pulled high (>VCC– + 0.5 V) for normal operation; pulled low (<0.5 V) for shutdown mode. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full-scale analog range into 2 kΩ load - preserves SNR when driving ADCs or low-voltage DACs. |
| Low 50 nA shutdown current | Reduces system standby power by >99% vs. active mode - critical for multi-year battery life in IoT endpoints. |
| Automotive-grade qualification | Meets AEC-Q100 Grade 1 requirements - validated for reliability in engine control, ADAS sensor modules, and body electronics. |
| High ESD tolerance (4 kV HBM) | Eliminates need for external protection diodes in most PCB layouts - simplifies BOM and layout for compact designs. |
| Stable with capacitive loads up to 200 pF | Enables direct driving of long traces or ADC input capacitance without external isolation resistor. |
Applications
| Automotive Cabin Sensor Interface | Portable ECG Front-End |
|---|---|
Use Scenario: Amplifying low-level signals from MEMS humidity, CO₂, or cabin air quality sensors in automotive HVAC control units. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier stage with shutdown synchronized to vehicle sleep mode. Use Value: 0.8 mV offset and 1 µV/°C drift ensure <±2% measurement error over –40°C to +85°C without calibration; 50 nA shutdown extends infotainment module battery backup life. |
Use Scenario: Biopotential signal conditioning in handheld ECG devices with dry electrodes and intermittent sampling. IC Role / Device Role / Timing Role: Low-noise, low-power gain stage preceding 12-bit SAR ADC, enabled only during heartbeat acquisition windows. Use Value: 1.4 V/µs slew rate and 18 nV/√Hz input noise preserve QRS complex fidelity; SC70-5 footprint saves >30% PCB area vs. SOIC-8 alternatives. |
| Industrial Battery Monitor | Smart Thermostat Signal Chain |
Use Scenario: Measuring cell voltage and temperature in 4S Li-ion battery packs for UPS or power tools. IC Role / Device Role / Timing Role: High-accuracy buffer for voltage dividers and thermistor interfaces, operating from 3.3 V LDO. Use Value: 75 dB CMRR rejects common-mode noise from switching regulators; 5.5 MHz GBP supports fast settling for multiplexed cell scanning. |
Use Scenario: Conditioning NTC thermistor and ambient light sensor outputs in energy-efficient smart thermostats. IC Role / Device Role / Timing Role: Rail-to-rail output driver for analog sensor outputs feeding microcontroller ADC inputs. Use Value: 2.5 V minimum supply allows direct operation from coin-cell backup; 125°C rating ensures reliability near heating elements or enclosed enclosures. |
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 |
|---|---|---|---|
| TSV851ICT | Lower supply current (180 µA max at 5 V), but reduced GBP (1.7 MHz) and higher Vio (1.5 mV max). | Better for ultra-low-power always-on monitoring; unsuitable for >200 kHz signal bandwidths. | Select when battery life dominates over signal bandwidth - e.g., environmental loggers with 1 Hz sampling. |
| LMV321IDBVR | No shutdown function; higher Vio (2.5 mV max); lower GBP (1 MHz); same SC70-5 package. | Lacks power gating - requires system-level sleep control; less accurate for DC-critical measurements. | Choose only if shutdown is unnecessary and cost is primary constraint; verify offset drift impact on calibration interval. |
Compared with TSV851ICT and LMV321IDBVR, LMV821ICT uniquely balances 5.5 MHz bandwidth, sub-mV offset, and nanoamp shutdown - making it optimal for automotive and portable medical applications requiring both precision and power agility.
Availability
LMV821ICT is available at Aetrix Electronics and suitable for automotive signal conditioning, portable medical instrumentation, and battery-powered sensor nodes requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LMV821ICT 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, specializing in automotive, industrial, and power management ICs with strong analog and mixed-signal design heritage.
The LMV82x series was developed specifically for high-accuracy, low-power signal conditioning in harsh-environment applications - emphasizing rail-to-rail operation, wide temperature robustness, and integrated power management for next-generation automotive and portable electronics.
FAQ
What is the maximum capacitive load the LMV821ICT can drive stably?
The LMV821ICT maintains stability with capacitive loads up to 200 pF without external compensation, as verified in Figure 11 of the datasheet. For loads exceeding 200 pF, a small series resistor (10–50 Ω) between amplifier output and capacitor is recommended to isolate reactive feedback and preserve phase margin.
Can the SHDN pin be left unconnected?
No - the SHDN pin must never be left floating. It must be actively driven to VCC+ (≥VCC– + 0.5 V) for normal operation or to VCC– (≤0.5 V) for shutdown. An external pull-up resistor to VCC+ (e.g., 100 kΩ) is recommended if controlled by an open-drain GPIO.
Does the LMV821ICT support dual-supply operation?
Yes - though optimized for single-supply use, it functions with split supplies (e.g., ±2.5 V) as long as total supply voltage remains within 2.5 V to 5.5 V and common-mode input stays within VCC– – 0.2 V to VCC+ – 1 V. Ground becomes the reference midpoint in such configurations.
How does the input offset voltage drift affect accuracy over temperature?
Input offset voltage drift is specified at 1 µV/°C maximum over –40°C to +125°C. Over this full range, worst-case drift adds ≤165 µV to the 0.8 mV room-temperature offset - resulting in ≤2.0 mV total Vio, which remains within specification limits for most 12-bit system-level accuracy requirements.
LMV821ICT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- 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:
- 1.9V/µs
- Gain Bandwidth Product:
- 5.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 60 nA
- Voltage - Input Offset:
- 3.5 mV
- Current - Supply:
- 300µA
- Current - Output / Channel:
- 70 mA
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
LMV821ICT FAQ
1.How can I place an order for LMV821ICT through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV821ICT 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 LMV821ICT reliable?
The price and inventory of LMV821ICT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV821ICT is usually 5 days.
3.What payment methods are accepted for LMV821ICT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV821ICT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV821ICT?
LMV821ICT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV821ICT 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 LMV821ICT?
For technical support, including LMV821ICT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV821ICT requirements.
6.How does Aetrix verify that LMV821ICT is sourced from the original manufacturer or authorized distributors?
All LMV821ICT 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 LMV821ICT meets industry standards.
7.What is the process for return or replacement of LMV821ICT?
All LMV821ICT units undergo pre-shipment inspection (PSI). If there is an issue with LMV821ICT, 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 LMV821ICT part is unused and in its original packaging.
Return procedure for LMV821ICT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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