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Texas Instruments LMV821M7X
- Part No.:
- LMV821M7X
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LMV821M7X.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,816
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Product details
Overview
LMV821M7X from Texas Instruments is a single, rail-to-rail output (RRO), low-voltage, low-power operational amplifier in SC70-5 package. It delivers 5 MHz gain-bandwidth product at 2.7 V supply, 1.4 V/µs slew rate, 3.5 mV max input offset voltage, and 220 µA quiescent current per amplifier - optimized for battery-powered portable electronics such as cordless phones and PDAs.
For engineers reviewing the LMV821M7X datasheet, LMV821M7X pinout, LMV821M7X application, or LMV821M7X equivalent, key selection criteria include its RRO swing into 600 Ω (160 mV from rail), −40°C to +85°C industrial temperature range, and validated performance at 2.5 V, 2.7 V, and 5 V supplies.
Technical Context
The LMV821M7X employs a CMOS input stage enabling rail-to-rail output swing and low input bias current (≤90 nA typical), while maintaining stable operation with capacitive loads up to several hundred pF. Its input common-mode range includes ground (−0.3 V to 4.3 V at 5 V supply), supporting single-supply signal conditioning near 0 V reference.
Designed for unity-gain stability, it achieves 61° phase margin at 2.7 V with 600 Ω load and exhibits 135 dB amp-to-amp isolation - critical for multi-amplifier PCB layouts where crosstalk must be minimized in compact portable systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.5 V to 5.5 V - supports direct integration into Li-ion (3.7 V nominal) and 3.3 V logic rails without level-shifting. |
| Gain-Bandwidth Product | 5 MHz at 2.7 V - enables stable amplification of audio-band signals (e.g., microphone preamp) with ≤1% gain error at 50 kHz. |
| Slew Rate | 1.4 V/µs min - sufficient for 100 kHz full-scale sine wave output at 2 Vpp without distortion. |
| Input Offset Voltage | 3.5 mV max - ensures ≤0.7% error in 500 mV full-scale sensor signal conditioning (e.g., thermistor interface). |
| Quiescent Current | 220 µA per amplifier - allows >100-hour battery life in always-on sensor nodes powered by CR2032 coin cell. |
| Rail-to-Rail Output | Swings within 160 mV of rails into 600 Ω - preserves dynamic range in low-voltage ADC driver applications (e.g., 10-bit SAR with 3.3 V reference). |
| CMRR / PSRR | 90 dB / 85 dB - rejects power supply ripple and common-mode noise in noisy digital environments (e.g., PCMCIA modem cards). |
Pinout & Package
LMV821M7X is packaged in SC70-5 (2.0 mm × 1.25 mm × 0.95 mm), a space-constrained footprint half the size of SOT23-5. This ultra-small outline supports high-density portable PCB designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN | Non-inverting input | Accepts analog signals referenced to ground; supports DC-coupled inputs down to −0.3 V at 5 V supply. |
| −IN | Inverting input | Used for feedback configuration (e.g., inverting amplifier, transimpedance); matched input impedance critical for precision gain accuracy. |
| OUT | Amplifier output | Delivers rail-to-rail swing into ≥600 Ω; requires local 100 nF bypass capacitor to maintain stability under capacitive loading. |
| V− | Negative supply | Grounded in single-supply operation; must be decoupled to minimize PSRR degradation at high frequencies. |
| V+ | Positive supply | Accepts 2.5–5.5 V; connects to regulated LDO output - thermal resistance RθJA = 263.4°C/W demands minimal copper pour for <85°C junction temp. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | 160 mV from supply rails into 600 Ω - maximizes usable output voltage range in 3.3 V systems driving 10-bit ADCs. |
| Low input offset drift | 1 µV/°C TCVOS - limits temperature-induced gain error to <0.1% over −40°C to +85°C ambient range. |
| Stable with capacitive loads | Validated operation with ≥100 pF load capacitance - eliminates need for isolation resistors in LCD bias or filter buffer stages. |
| High amp-to-amp isolation | 135 dB - prevents crosstalk between adjacent channels in dual/quad variants; confirmed on shared substrate layout. |
| Extended supply range | Operates down to 2.5 V - enables direct use with buck-boost regulators in energy-harvesting sensor nodes. |
Applications
| Microphone Preamplifier | Portable Sensor Signal Conditioning |
|---|---|
Use Scenario: Amplifying low-level electret microphone output (10–20 mV) in Bluetooth headsets before ADC sampling. IC Role / Device Role / Timing Role: Single-supply non-inverting amplifier with gain = 100, configured for DC-coupled input and RRO output into 10 kΩ ADC input. Use Value: 220 µA supply current extends headset battery life; 5 MHz GBW ensures flat frequency response up to 20 kHz. |
Use Scenario: Buffering and scaling thermistor or bridge-sensor outputs in handheld medical devices. IC Role / Device Role / Timing Role: Precision voltage follower and gain stage operating from 3.3 V rail, rejecting supply noise via 85 dB PSRR. Use Value: 3.5 mV max VOS and 1 µV/°C drift ensure ≤0.5°C measurement error across operating temperature range. |
| Laptop Touchpad Interface | PCMCIA Modem Line Driver |
Use Scenario: Driving capacitive touchpad sense lines with fast settling and minimal power draw in ultrabooks. IC Role / Device Role / Timing Role: Low-noise buffer (28 nV/√Hz) with rail-to-rail output, sourcing/sinking ≥12 mA to charge/discharge 100 pF trace capacitance. Use Value: 1.4 V/µs slew rate achieves <1 µs settling to 0.1%; 220 µA IQ avoids thermal throttling in thin form factors. |
Use Scenario: Transmitting analog line signals (e.g., V.34 modem) from PCMCIA card to RJ-11 jack with ESD robustness. IC Role / Device Role / Timing Role: High-isolation (135 dB) line driver with ±2 kV HBM ESD rating on all pins per JEDEC JS-001. Use Value: Stable performance into 600 Ω telephone line impedance; RRO swing maintains signal fidelity across 0–3 V dynamic range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP6001T-E/OT | Lower GBW (1 MHz), higher VOS (4.5 mV max), same SC70-5 package and 2.5–5.5 V supply range. | Not suitable for >100 kHz signal paths; acceptable for DC-coupled sensor buffers where bandwidth is secondary. | Select when cost sensitivity outweighs bandwidth needs and 1 MHz suffices for system response time. |
| TSV911ICT | Higher GBW (8 MHz), lower VOS (1.5 mV max), but 250 µA IQ and only specified down to 2.7 V supply. | Superior AC performance for audio or active filters; unsuitable for 2.5 V systems or ultra-low-power sleep modes. | Choose when 8 MHz bandwidth and sub-2 mV offset are required, and supply is guaranteed ≥2.7 V. |
Compared with MCP6001T-E/OT and TSV911ICT, LMV821M7X uniquely balances 5 MHz bandwidth, 220 µA quiescent current, and 2.5 V minimum supply - making it optimal for portable systems requiring both speed and battery longevity.
Availability
LMV821M7X is available at Aetrix Electronics and suitable for cordless phones, PDAs, and PCMCIA modem cards requiring stable component supply with automotive-grade reliability validation.
Supply support for LMV821M7X 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 precision op amps and low-power signal chains.
The LMV821M7X belongs to TI's LMV82x family of low-voltage, low-power RRO op amps - designed specifically for portable, battery-operated consumer and industrial equipment where size, power, and rail-to-rail performance are critical.
FAQ
What is the maximum operating temperature for LMV821M7X?
The LMV821M7X is rated for operation from −40°C to +85°C ambient temperature. This industrial temperature range is validated per the LMV821-N specification in the official TI datasheet SNOS032I. The device uses SC70-5 packaging with RθJA = 263.4°C/W, so thermal design must ensure junction temperature remains below 150°C under worst-case load and ambient conditions. LMV821M7X does not support the extended 125°C grade offered in LMV822-Q1 or LMV824-Q1 variants.
Does LMV821M7X support true rail-to-rail input?
No, LMV821M7X does not feature rail-to-rail input. Its input common-mode voltage range is specified as −0.3 V to 4.3 V at 5 V supply - meaning the inputs operate down to 0.3 V below ground but only up to 0.7 V below V+, limiting full-scale single-supply use. However, LMV821M7X does provide rail-to-rail output (RRO), swinging within 160 mV of either rail into 600 Ω. This makes it ideal for output buffering but requires careful input biasing in DC-coupled configurations.
Can LMV821M7X drive a 10 kΩ load effectively?
Yes, LMV821M7X drives 10 kΩ loads with high precision: at 5 V supply, output swing is 4.85–4.90 V (high) and 0.10–0.15 V (low), delivering >97% of full rail range. Its 95–105 dB large-signal voltage gain ensures minimal gain error, and 28 nV/√Hz input voltage noise preserves signal integrity. For 10 kΩ loads, no external compensation is needed - unlike heavier 600 Ω loads where layout and bypassing become more critical.
Is LMV821M7X pin-compatible with other SC70-5 op amps?
LMV821M7X follows the standard SC70-5 pinout (+IN, −IN, OUT, V−, V+), matching industry conventions used by TI, Microchip, STMicroelectronics, and others. However, pin compatibility does not guarantee functional equivalence - parameters like GBW (5 MHz), slew rate (1.4 V/µs), and supply current (220 µA) differ significantly from alternatives such as MCP6001 (1 MHz, 100 µA) or TSV911 (8 MHz, 250 µA). Always verify AC performance and stability margins in target circuit conditions.
What is the ESD rating of LMV821M7X?
LMV821M7X is rated for ±2000 V HBM (Human Body Model) per ANSI/ESDA/JEDEC JS-001 on all pins, as confirmed in Section 6.2 of the TI datasheet SNOS032I. This exceeds standard industrial requirements and supports robust handling in PCMCIA and portable electronics assembly. Note that the automotive-grade LMV822-Q1 and LMV824-Q1 variants share this rating but add AEC-Q100 Grade 1 qualification - LMV821M7X itself is not AEC-Q100 qualified.
LMV821M7X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- 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
LMV821M7X FAQ
1.How can I place an order for LMV821M7X through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV821M7X 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 LMV821M7X reliable?
The price and inventory of LMV821M7X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV821M7X is usually 5 days.
3.What payment methods are accepted for LMV821M7X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV821M7X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV821M7X?
LMV821M7X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV821M7X 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 LMV821M7X?
For technical support, including LMV821M7X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV821M7X requirements.
6.How does Aetrix verify that LMV821M7X is sourced from the original manufacturer or authorized distributors?
All LMV821M7X 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 LMV821M7X meets industry standards.
7.What is the process for return or replacement of LMV821M7X?
All LMV821M7X units undergo pre-shipment inspection (PSI). If there is an issue with LMV821M7X, 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 LMV821M7X part is unused and in its original packaging.
Return procedure for LMV821M7X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMV821M7X Tags
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