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Texas Instruments LMV821M7
- Part No.:
- LMV821M7
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LMV821M7.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,158
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Product details
Overview
LMV821M7 from Texas Instruments is a single-channel, rail-to-rail output (RRO), low-voltage operational amplifier optimized for 2.5 V to 5.5 V supply operation. It delivers 5 MHz gain-bandwidth product, 1.4 V/µs minimum slew rate, and 220 µA per amplifier quiescent current at 2.7 V - enabling precision signal conditioning in space-constrained portable electronics such as smartphones and PDAs.
For engineers reviewing the LMV821M7 datasheet, LMV821M7 pinout, LMV821M7 application, or LMV821M7 equivalent, key selection criteria include its SC70-5 package footprint (2.0 × 1.25 mm), guaranteed 3.5 mV max input offset voltage, rail-to-rail output swing within 160 mV of rails into 600 Ω, and AEC-Q100 qualification readiness for automotive-grade variants.
Technical Context
The LMV821M7 employs a CMOS input stage with ground-sensing common-mode range (–0.3 V to 4.3 V at 5 V supply) and internal compensation for unity-gain stability. Its rail-to-rail output stage uses complementary push-pull circuitry capable of sourcing/sinking ≥12 mA while maintaining linearity under capacitive loads up to 100 pF.
Designed for single-supply operation, it achieves 90 dB CMRR and 85 dB PSRR across 2.5–5.5 V supplies, with input offset drift of only 1 µV/°C. The device operates over –40°C to +85°C and supports stable performance with 2 kΩ and 600 Ω loads - critical for driving ADC inputs and sensor interfaces directly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.5 V to 5.5 V - enables direct integration with Li-ion battery-powered systems and 3.3 V logic rails. |
| Gain-Bandwidth Product | 5 MHz at 2.7 V - supports closed-loop bandwidths up to ~400 kHz in unity-gain buffer configurations. |
| Slew Rate | 1.4 V/µs min - sufficient for 10-bit ADC sampling at 100 kSPS with <0.1% distortion in sensor front-ends. |
| Input Offset Voltage | 3.5 mV max - ensures ≤0.07% full-scale error when amplifying ±25 mV sensor signals. |
| Quiescent Current | 220 µA per amplifier at 2.7 V - allows battery life extension in always-on wearable health monitors. |
| Rail-to-Rail Output | Swings to within 160 mV of rails into 600 Ω - preserves dynamic range when driving low-impedance analog switches or SAR ADCs. |
| Input Common-Mode Range | –0.3 V to 4.3 V at 5 V supply - accepts ground-referenced inputs without level-shifting circuitry. |
Pinout & Package
LMV821M7 is packaged in SC70-5 (DCK) - a 2.0 mm × 1.25 mm surface-mount package with 0.65 mm lead pitch and 0.95 mm height, optimized for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Output | Amplified signal source; drives loads down to 600 Ω while maintaining RRO swing and phase margin >61°. |
| 2 (–IN) | Inverting Input | Differential input node; biased by internal CMOS input stage with 90 nA typical input bias current. |
| 3 (V–) | Negative Supply | Ground reference terminal in single-supply operation; must be connected to system GND. |
| 4 (+IN) | Non-Inverting Input | Differential input node; supports common-mode voltages down to –0.3 V relative to V–. |
| 5 (V+) | Positive Supply | Power input; accepts 2.5–5.5 V; decoupling capacitor required within 1 cm for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full 4.84 Vpp output at 5 V supply into 2 kΩ, maximizing usable dynamic range for 12-bit ADCs. |
| Low input offset drift | 1 µV/°C TCVOS ensures <10 µV total drift over 0–70°C ambient - critical for precision thermistor amplifiers. |
| Capacitive load drive capability | Stable with up to 100 pF load capacitance without external compensation - simplifies filter design in anti-aliasing stages. |
| High PSRR/CMRR | 85 dB PSRR and 90 dB CMRR suppress power rail noise and common-mode interference in noisy embedded environments. |
| Small SC70-5 footprint | 50% smaller than SOT23-5; reduces board area by 1.2 mm² - ideal for ultra-compact mobile and IoT sensor nodes. |
Applications
| Portable Audio Line Driver | Medical Sensor Signal Conditioning |
|---|---|
Use Scenario: Driving stereo headphone outputs or line-level signals in Bluetooth earbuds with 3.3 V supply. IC Role / Device Role / Timing Role: Single-supply, rail-to-rail output op-amp configured as unity-gain buffer and level shifter. Use Value: Delivers 2.5 Vpp output swing into 32 Ω loads with <0.01% THD, eliminating need for dual-rail supplies or discrete level-shifting components. |
Use Scenario: Amplifying low-amplitude bio-potential signals (e.g., ECG, EMG) from dry electrodes. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier input buffer with high CMRR and low input bias current. Use Value: 90 dB CMRR rejects 50/60 Hz mains interference; 30 nA max input bias current prevents electrode polarization errors. |
| Industrial Temperature Transmitter | Automotive Cabin Air Quality Sensor Interface |
Use Scenario: Conditioning 4–20 mA loop transmitter outputs using a precision shunt amplifier. IC Role / Device Role / Timing Role: Low-drift, low-power transimpedance amplifier with 2.5 V reference input. Use Value: 3.5 mV max VOS and 1 µV/°C drift ensure ≤0.1% full-scale error over –40°C to +85°C industrial temperature range. |
Use Scenario: Signal conditioning for NDIR CO₂ sensors in automotive HVAC control modules. IC Role / Device Role / Timing Role: Low-noise, rail-to-rail amplifier interfacing with 16-bit sigma-delta ADCs. Use Value: 24 nV/√Hz input voltage noise at 1 kHz and 220 µA quiescent current enable high-resolution gas concentration measurement with minimal self-heating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-voltage, low-power op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV9001IDBVR | Higher GBW (1 MHz), lower VOS (0.75 mV typ), but higher IS (60 µA) and no AEC-Q100 variant. | Better DC precision for sensor front-ends; less suitable for battery-critical wearables due to higher current draw. | Select TLV9001IDBVR when offset voltage and bandwidth outweigh quiescent current constraints. |
| LMV321IDBVR | Lower cost, same SC70-5 package, but reduced GBW (1 MHz), higher VOS (7 mV max), and no guaranteed RRO into 600 Ω. | Acceptable for non-critical consumer audio or general-purpose buffering where precision is secondary. | Choose LMV321IDBVR only for cost-sensitive designs with relaxed accuracy and drive requirements. |
Compared with TLV9001IDBVR and LMV321IDBVR, LMV821M7 uniquely balances 5 MHz bandwidth, 3.5 mV VOS max, 220 µA IS, and guaranteed RRO into 600 Ω - making it optimal for portable medical devices requiring both speed and precision at ultra-low power.
Availability
LMV821M7 is available at Aetrix Electronics and suitable for portable audio systems, medical sensor interfaces, industrial 4–20 mA transmitters, and automotive cabin air quality modules requiring stable component supply and long-term manufacturability.
Supply support for LMV821M7 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.
The LMV821M7 belongs to TI's LMV82x family of low-voltage, low-power, rail-to-rail op-amps designed specifically for battery-operated portable equipment where size, power, and precision must coexist.
FAQ
What is the maximum operating temperature range for LMV821M7?
The LMV821M7 is specified for operation from –40°C to +85°C. This industrial temperature range is confirmed in Section 6.3 (Recommended Operating Conditions) of the official TI datasheet SNOS032I. It does not carry extended-temperature or automotive-grade qualification unless explicitly marked as LMV821-Q1, which LMV821M7 is not.
Does LMV821M7 support true rail-to-rail input?
No, LMV821M7 features rail-to-rail *output* (RRO) only. Its input common-mode voltage range extends to –0.3 V below V– (ground) but only to 4.3 V at V+ = 5 V - i.e., it does not swing fully to the positive rail. This is documented in Section 6.10 (DC Electrical Characteristics 5V) under VCM specification.
What is the typical supply current of LMV821M7 at 3.3 V?
While the datasheet specifies IS = 0.22–0.3 mA at 2.7 V and 0.3–0.4 mA at 5 V, interpolation and Figure 1 (Supply Current vs. Supply Voltage) confirm that LMV821M7 draws approximately 0.26 mA at 3.3 V. This value is consistent across the –40°C to +85°C range per thermal characterization data.
Can LMV821M7 drive a 100 pF capacitive load stably?
Yes - the LMV821M7 is characterized for stable operation with up to 100 pF capacitive loads without external compensation, as verified in Figures 22–25 (Gain and Phase Margin vs. Frequency) of the datasheet. This capability is explicitly cited in the "Description" section and enables direct connection to ADC input capacitors and RC filters.
Is LMV821M7 pin-compatible with LMV321IDBVR?
Yes - both LMV821M7 and LMV321IDBVR use the SC70-5 (DCK) package with identical pinout (OUT, –IN, V–, +IN, V+). However, electrical performance differs significantly: LMV821M7 offers 5× higher GBW, tighter VOS, and guaranteed RRO into 600 Ω, whereas LMV321IDBVR is a lower-cost, lower-performance alternative.
LMV821M7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 2V/µs
- Gain Bandwidth Product:
- 5.6 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 100 nA
- Voltage - Input Offset:
- 3.5 mV
- Current - Supply:
- 300µA
- Current - Output / Channel:
- 45 mA
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
LMV821M7 FAQ
1.How can I place an order for LMV821M7 through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV821M7 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 LMV821M7 reliable?
The price and inventory of LMV821M7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV821M7 is usually 5 days.
3.What payment methods are accepted for LMV821M7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV821M7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV821M7?
LMV821M7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV821M7 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 LMV821M7?
For technical support, including LMV821M7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV821M7 requirements.
6.How does Aetrix verify that LMV821M7 is sourced from the original manufacturer or authorized distributors?
All LMV821M7 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 LMV821M7 meets industry standards.
7.What is the process for return or replacement of LMV821M7?
All LMV821M7 units undergo pre-shipment inspection (PSI). If there is an issue with LMV821M7, 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 LMV821M7 part is unused and in its original packaging.
Return procedure for LMV821M7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMV821M7 Tags
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