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Texas Instruments LMV821M7X/NOPB
- Part No.:
- LMV821M7X/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LMV821M7X/NOPB.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:13,042
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Product details
Overview
LMV821M7X/NOPB from Texas Instruments is a single-channel, rail-to-rail output (RRO), low-voltage operational amplifier in SC70-5 package. It delivers 5 MHz gain-bandwidth product at 2.7 V supply, 1.4 V/µs slew rate, and 220 µA quiescent current per amplifier, with input offset voltage ≤3.5 mV and rail-to-rail swing within 55 mV of rails under 10 kΩ load - optimized for battery-powered portable electronics such as cordless phones and PDAs.
For engineers reviewing the LMV821M7X/NOPB datasheet, LMV821M7X/NOPB pinout, LMV821M7X/NOPB application, or LMV821M7X/NOPB equivalent, key selection criteria include low-power RRO performance at 2.5–5.5 V supply, guaranteed operation from –40°C to +85°C, and compatibility with capacitive loads up to 100 pF without instability.
Technical Context
The LMV821M7X/NOPB employs a CMOS input stage enabling rail-to-rail input common-mode range down to ground and rail-to-rail output swing into 600 Ω (160 mV from rail) or 10 kΩ (55 mV from rail). Its unity-gain stable architecture supports direct driving of ADC inputs and sensor signal conditioning without external compensation.
Designed for single-supply operation, it achieves 90 dB CMRR and 85 dB PSRR at 5 V, with input bias current ≤100 nA and input voltage noise of 24 nV/√Hz at 1 kHz - making it suitable for precision, low-noise front-end amplification in space-constrained, low-power systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.5 V to 5.5 V - supports direct integration into 3.3 V and 5 V logic domains and Li-ion/Li-poly battery systems. |
| Gain-Bandwidth Product | 5 MHz at 2.7 V - enables stable closed-loop gain ≥10 at audio frequencies (≤500 kHz) and sensor signal filtering. |
| Slew Rate | 1.4 V/µs (min) - sufficient for 10-bit ADC driving at 100 kSPS with <0.1% distortion. |
| Quiescent Current | 220 µA per amplifier - allows >10-year battery life in always-on sensor nodes powered by coin cells. |
| Input Offset Voltage | ≤3.5 mV (max) - ensures ≤0.1% full-scale error in 3.3 V-span 12-bit systems without trimming. |
| Rail-to-Rail Output | Swings to within 55 mV of rails at 10 kΩ - maximizes dynamic range when interfacing with 3.3 V SAR ADCs. |
| Operating Temperature | –40°C to +85°C - qualified for industrial and consumer portable equipment environments. |
Pinout & Package
LMV821M7X/NOPB is housed in a 5-pin SC70-5 package (2.0 mm × 1.25 mm × 0.95 mm), optimized for ultra-compact PCB layouts in portable devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN | Non-inverting input | High-impedance CMOS node accepting signals from sensors or DAC outputs; referenced to ground in single-supply configurations. |
| –IN | Inverting input | High-impedance CMOS node used for feedback network connection or differential signal reception. |
| OUT | Amplifier output | Capable of sourcing/sinking ≥12 mA; drives 600 Ω loads while maintaining RRO swing and stability. |
| V− | Negative supply | Connected to ground in single-supply operation; supports split-supply use down to –0.3 V. |
| V+ | Positive supply | Accepts 2.5–5.5 V; internal regulation ensures consistent GBW and slew rate across supply range. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Within 55 mV of supply rails at 10 kΩ load - preserves full ADC input range in 3.3 V systems. |
| Low quiescent current | 220 µA typical at 2.7 V - enables multi-channel sensing with sub-1 mA total analog front-end power budget. |
| Stable with capacitive loads | Operates unconditionally stable with up to 100 pF load capacitance - eliminates need for isolation resistors in ADC buffer designs. |
| Wide supply range | 2.5 V to 5.5 V operation - compatible with both 3.3 V microcontrollers and legacy 5 V peripherals. |
| Input common-mode range | Includes ground (–0.3 V to 4.3 V at 5 V supply) - supports direct interface to 0–3.3 V sensor outputs without level-shifting. |
Applications
| Cordless Phone Audio Amplifier | Laptop Touchpad Signal Conditioning |
|---|---|
Use Scenario: Amplifies weak analog signals from microphone and earpiece circuits in 3.3 V cordless handsets. IC Role / Device Role / Timing Role: Single-supply RRO op amp configured as non-inverting amplifier and active filter stage. Use Value: 5 MHz GBW and 1.4 V/µs slew rate support wideband voice fidelity; 220 µA IQ extends talk time on AA/AAA batteries. |
Use Scenario: Conditions analog voltage outputs from capacitive touchpad sensors before digitization by laptop EC. IC Role / Device Role / Timing Role: Low-noise, rail-to-rail input/output amplifier buffering high-impedance sensor electrodes. Use Value: Input offset ≤3.5 mV minimizes baseline drift; rail-to-rail swing ensures full utilization of 12-bit EC ADC reference. |
| PDA Battery Monitoring Circuit | PCMCIA Modem Line Transceiver |
Use Scenario: Senses cell voltage and current in handheld PDAs using shunt-based measurement and voltage dividers. IC Role / Device Role / Timing Role: Precision difference amplifier and reference buffer in battery fuel gauge subsystem. Use Value: 90 dB CMRR rejects common-mode noise from switching regulators; 2.5 V min supply enables operation during brownout. |
Use Scenario: Drives telephone line interface circuitry in PCMCIA modem cards requiring low-power analog signal transmission. IC Role / Device Role / Timing Role: Line driver and receive amplifier in analog front-end of V.92/V.34 modems. Use Value: Stable performance with 100 pF cable capacitance avoids oscillation; 5.5 V max rating accommodates line surge transients. |
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 |
|---|---|---|---|
| TLV2461IDBVR | Higher quiescent current (550 µA), wider GBW (6.4 MHz), but larger input offset (2 mV typ, 6 mV max). | Better AC performance but higher power draw - less suitable for coin-cell-powered devices. | Prefer TLV2461IDBVR only when bandwidth >5 MHz is required and supply current budget allows ≥2× increase. |
| OPA316IDBVR | Lower input noise (11 nV/√Hz), lower offset (0.5 mV max), but higher IQ (400 µA) and no AEC-Q100 qualification. | Superior precision for sensor front-ends where noise dominates error budget. | Select OPA316IDBVR for high-resolution data acquisition; retain LMV821M7X/NOPB for cost-sensitive, ultra-low-power portable designs. |
Compared with TLV2461IDBVR and OPA316IDBVR, LMV821M7X/NOPB offers the lowest quiescent current in its class while maintaining adequate bandwidth and rail-to-rail output - making it optimal for battery longevity-critical applications where moderate precision suffices.
Availability
LMV821M7X/NOPB is available at Aetrix Electronics and suitable for cordless phones, PDAs, and PCMCIA modem cards requiring stable component supply with guaranteed long-term availability and traceable lot control.
Supply support for LMV821M7X/NOPB 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 and embedded processing solutions, with over 90 years of innovation in precision analog ICs and power management.
The LMV82x family was designed specifically for low-voltage, low-power portable electronics - balancing rail-to-rail performance, micropower operation, and small-footprint packaging for space-constrained consumer and industrial devices.
FAQ
What is the maximum operating temperature for LMV821M7X/NOPB?
The LMV821M7X/NOPB 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. The device is not rated for automotive-grade extended temperature (–40°C to +125°C); that specification applies only to the LMV822-Q1 and LMV824-Q1 variants, not the LMV821M7X/NOPB.
Does LMV821M7X/NOPB support true rail-to-rail input?
No, LMV821M7X/NOPB features rail-to-rail *output* (RRO) but not rail-to-rail *input*. Its input common-mode voltage range extends to –0.3 V (below ground) and up to 4.3 V at 5 V supply - including ground but not reaching V+, as stated in the "VCM" parameter (Section 6.10). True rail-to-rail input would require operation down to V− and up to V+; this device's input stage is CMOS-based and ground-sensing, but not V+-referenced.
Can LMV821M7X/NOPB drive a 600 Ω load while maintaining rail-to-rail output swing?
Yes, LMV821M7X/NOPB is explicitly characterized for 600 Ω loads: at 5 V supply, output swing is specified as 4.75 V (high) and 0.17 V (low), i.e., within 250 mV of each rail. At 2.7 V supply, swing is 2.50 V (high) and 0.13 V (low) - confirming 160 mV from rail. These values are documented in Sections 6.7 and 6.10 of the datasheet under "VO Output Swing" test conditions.
Is LMV821M7X/NOPB pin-compatible with other packages in the LMV82x family?
No - LMV821M7X/NOPB uses the SC70-5 package (5-pin), whereas LMV822-N uses SOIC-8 or VSSOP-8, and LMV824-N uses SOIC-14 or TSSOP-14. Pin count, pinout, and footprint differ fundamentally. The SC70-5 pin configuration (+IN, –IN, OUT, V−, V+) is unique to the single-channel variant and not shared with dual or quad versions. No mechanical or electrical pin compatibility exists across the LMV82x family.
What is the typical input bias current for LMV821M7X/NOPB at 25°C and 2.7 V supply?
The typical input bias current for LMV821M7X/NOPB is 30 nA at 25°C and 2.7 V supply, with a maximum of 90 nA over temperature (–40°C to +85°C), as specified in Section 6.7 (DC Electrical Characteristics at 2.7 V). This low IB enables high-impedance sensor interfaces (e.g., thermistors, photodiodes) without significant voltage error due to leakage.
LMV821M7X/NOPB 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:
- 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:
- -
- 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/NOPB FAQ
1.How can I place an order for LMV821M7X/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV821M7X/NOPB 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/NOPB reliable?
The price and inventory of LMV821M7X/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV821M7X/NOPB is usually 5 days.
3.What payment methods are accepted for LMV821M7X/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV821M7X/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV821M7X/NOPB?
LMV821M7X/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV821M7X/NOPB 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/NOPB?
For technical support, including LMV821M7X/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV821M7X/NOPB requirements.
6.How does Aetrix verify that LMV821M7X/NOPB is sourced from the original manufacturer or authorized distributors?
All LMV821M7X/NOPB 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/NOPB meets industry standards.
7.What is the process for return or replacement of LMV821M7X/NOPB?
All LMV821M7X/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMV821M7X/NOPB, 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/NOPB part is unused and in its original packaging.
Return procedure for LMV821M7X/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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