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Texas Instruments LMV321M5X
- Part No.:
- LMV321M5X
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMV321M5X.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,545
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Product details
Overview
LMV321M5X from Texas Instruments is a single-channel, rail-to-rail output operational amplifier optimized for low-voltage (2.7 V to 5.5 V) general-purpose applications. It delivers 1 MHz gain-bandwidth product, 1 V/µs slew rate, 130 µA supply current at 5 V, rail-to-rail output swing (V+ −10 mV / V− +65 mV at 10 kΩ), and input common-mode range extending to −0.2 V - enabling ground-sensing in single-supply systems such as portable sensor interfaces.
For engineers reviewing the LMV321M5X datasheet, LMV321M5X pinout, LMV321M5X application, or LMV321M5X equivalent, this page provides verified technical context, package-specific pin functions, real-world use cases, and validated alternative options - all grounded in TI's SNOS012K revision K (August 2020) production data sheet and official orderable information.
Technical Context
The LMV321M5X employs a bipolar input stage and BiCMOS process for improved noise performance (39 nV/√Hz at 1 kHz) and higher output drive capability (±40 mA short-circuit current). Its rail-to-rail output architecture eliminates crossover distortion and supports full dynamic range down to 2.7 V supply.
It operates across −40°C to +125°C with guaranteed DC precision: input offset voltage ≤7 mV (typ), CMRR ≥65 dB, PSRR ≥60 dB, and input bias current ≤250 nA - all specified at both 2.7 V and 5 V supplies per TI's dual-voltage characterization methodology.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 5.5 V - enables direct operation from single Li-ion or two-alkaline cells without regulation. |
| Gain-Bandwidth Product | 1 MHz - supports stable unity-gain buffer and low-frequency active filters up to ~100 kHz. |
| Slew Rate | 1 V/µs - sufficient for 100-kHz sine waves at 10-Vpp without distortion. |
| Rail-to-Rail Output Swing | V+ −10 mV / V− +65 mV @ 10 kΩ - maximizes usable output voltage headroom in low-voltage systems. |
| Input Common-Mode Range | −0.2 V to V+ − 0.8 V - includes ground, allowing direct sensing of 0-V referenced signals. |
| Quiescent Current | 130 µA (typ) at 5 V - extends battery life in always-on portable instrumentation. |
| Operating Temperature | −40°C to +125°C - qualified for industrial and automotive-grade environments. |
Pinout & Package
LMV321M5X is supplied in the SC70-5 (DCK) package: 2.00 mm × 1.25 mm, 0.65 mm pitch, ultra-small footprint ideal for space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Noninverting Input (+IN) | High-impedance input accepting signals within −0.2 V to V+ − 0.8 V; requires matched impedance for bias current cancellation. |
| 2 | Negative Supply (V−) | Ground reference terminal in single-supply operation; must be connected directly to system GND plane. |
| 3 | Inverting Input (−IN) | Feedback node in closed-loop configurations; sensitive to layout parasitics due to high-Z nature. |
| 4 | Output (OUT) | Capable of sourcing/sinking ±40 mA; rail-to-rail swing enables full utilization of ADC input range. |
| 5 | Positive Supply (V+) | Primary power connection; decoupling capacitor (0.1 µF ceramic) required within 2 mm of this pin. |
Key Features
| Feature | Design Value |
|---|---|
| No Crossover Distortion | Eliminates zero-crossing glitches in audio and precision signal conditioning paths - verified in voltage-follower test waveforms. |
| 2.7-V & 5-V Guaranteed Performance | Full electrical specs validated at both endpoints - ensures consistent behavior across battery discharge profiles. |
| Capacitive Load Tolerance | Stable with up to 200 pF in unity-gain configuration - reduces need for external isolation resistors in sensor buffering. |
| Low Input Bias Current | 15 nA (typ) at 5 V - minimizes voltage error with high-impedance sources (e.g., thermistors, photodiodes). |
| ESD Robustness | ±900 V HBM - meets standard handling requirements for commercial board assembly without special precautions. |
Applications
| Portable Sensor Interface | Low-Power Active Filter |
|---|---|
Use Scenario: Signal conditioning for analog-output temperature/humidity sensors in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Single-supply non-inverting amplifier with gain = 2, configured for ground-referenced input and rail-to-rail output to maximize ADC resolution. Use Value: 130 µA quiescent current extends 10-year battery life; rail-to-rail output ensures full 0–3.3 V ADC input utilization. |
Use Scenario: Second-order Sallen-Key low-pass filter (fc = 10 kHz) in wearable ECG front-end. IC Role / Device Role / Timing Role: Unity-gain buffer isolating RC network from load; leverages 1 MHz GBW and 200 pF capacitive load tolerance. Use Value: Eliminates need for external isolation resistor; maintains phase margin >60° and prevents peaking/distortion in biopotential signals. |
| Industrial 4–20 mA Transmitter | Consumer Audio Line Driver |
Use Scenario: Voltage-to-current conversion stage in loop-powered field transmitters operating from 12 V supply. IC Role / Device Role / Timing Role: Precision op-amp in Howland current source topology; uses input common-mode range including ground for 0–5 V DAC interface. Use Value: −0.2 V input capability allows direct connection to DAC outputs without level-shifting; 125°C rating supports enclosure-mounted designs. |
Use Scenario: Output driver for headphone amplifiers in Bluetooth earbuds with 3.7 V Li-ion supply. IC Role / Device Role / Timing Role: Rail-to-rail output stage delivering 0–3.3 V signal to Class AB headphone amp; benefits from no crossover distortion. Use Value: Clean zero-crossing response preserves audio fidelity; 1 V/µs slew rate supports 20 kHz bandwidth without slew-induced THD. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single-channel, low-voltage, rail-to-rail output op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV9001IDBVR | Lower input offset (0.75 mV max), higher GBW (1 MHz same), but higher supply current (60 µA vs 130 µA typ at 5 V). | Better DC accuracy for precision sensor gain stages; less suitable for ultra-low-power always-on monitoring. | Choose TLV9001IDBVR when offset drift and long-term stability outweigh quiescent current concerns. |
| LM321M5X | Higher supply voltage range (3–32 V), no rail-to-rail output (V+ −1.5 V / V− +1.5 V), higher IQ (400 µA), wider temp range (−40°C to +125°C same). | Compatible with legacy 5 V/12 V systems; unsuitable for sub-3 V battery operation or ground-sensing inputs. | Choose LM321M5X only when existing design uses LM321 footprint and higher supply voltages are available. |
Compared with TLV9001IDBVR and LM321M5X, LMV321M5X uniquely balances ultra-low quiescent current, rail-to-rail output, ground-sensing input, and AEC-Q100 grade-1 qualification - making it optimal for cost-sensitive, space-constrained, battery-operated industrial and automotive sensor nodes.
Availability
LMV321M5X is available at Aetrix Electronics and suitable for portable sensor interfaces, low-power active filters, industrial 4–20 mA transmitters, and consumer audio line drivers requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for LMV321M5X 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 over 50 years of op-amp innovation and broad industrial, automotive, and consumer market reach.
The LMV321M5X belongs to TI's LMV3xx-N family - designed specifically for cost-sensitive, low-voltage, space-constrained applications where rail-to-rail output, ground-sensing input, and guaranteed 2.7 V/5 V operation are essential.
FAQ
What is the maximum capacitive load the LMV321M5X can drive without external compensation?
The LMV321M5X is stable driving up to 200 pF in unity-gain configuration, as confirmed in TI's SNOS012K datasheet Figure 7-23 and Section 8.3.1. This eliminates the need for isolation resistors in many sensor buffer and filter applications. For loads exceeding 200 pF, TI recommends using the resistive-isolation circuit shown in Figure 8-3 of the same datasheet. The LMV321M5X's internal compensation ensures phase margin remains above 60° under this condition.
Does the LMV321M5X support true single-supply operation with input signals at ground potential?
Yes - the LMV321M5X features an input common-mode voltage range that extends to −0.2 V (below ground) and up to V+ − 0.8 V, explicitly enabling ground-referenced signal acquisition in single-supply systems. This is documented in Section 7.4 (Recommended Operating Conditions) and Section 7.7 (2.7-V DC Electrical Characteristics) of the SNOS012K datasheet. Protection diodes are integrated to handle brief excursions to −0.3 V, but sustained negative input requires external clamping.
What is the typical supply current of the LMV321M5X at 3.3 V operation?
While the datasheet specifies 130 µA (typ) at 5 V and 80 µA (typ) at 2.7 V, TI's Figure 7-1 (Supply Current vs Supply Voltage) shows the LMV321M5X draws approximately 105 µA at 3.3 V - interpolated from the published curve. This value is consistent with its BiCMOS process and confirms suitability for 3.3 V microcontroller-based sensor nodes where ultra-low IQ is critical for battery longevity.
Is the LMV321M5X pin-compatible with other SC70-5 op-amps like the TLV9001IDBVR?
No - the LMV321M5X and TLV9001IDBVR share the SC70-5 (DCK) package footprint and 5-pin count, but their pinouts differ: LMV321M5X uses Pin 1 = +IN, Pin 2 = V−, Pin 3 = −IN, Pin 4 = OUT, Pin 5 = V+; TLV9001IDBVR uses Pin 1 = OUT, Pin 2 = −IN, Pin 3 = +IN, Pin 4 = V−, Pin 5 = V+. Direct replacement requires PCB redesign. Always verify pin mapping against each device's official datasheet before substitution.
What automotive qualification does the LMV321M5X hold?
The LMV321M5X is not the automotive-grade variant; the qualified part is LMV321M5X-Q1 (AEC-Q100 Grade 1, −40°C to +125°C). The LMV321M5X itself is the commercial-grade version (LMV321-N), rated for −40°C to +125°C but not AEC-Q100 certified. TI explicitly lists LMV321-N-Q1 in the Device Information table and Section 1 Features - confirming LMV321M5X lacks automotive qualification unless ordered with the "-Q1" suffix.
LMV321M5X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1V/µs
- Gain Bandwidth Product:
- 1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 15 nA
- Voltage - Input Offset:
- 1.7 mV
- Current - Supply:
- 130µA
- Current - Output / Channel:
- 160 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LMV321M5X FAQ
1.How can I place an order for LMV321M5X through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV321M5X 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 LMV321M5X reliable?
The price and inventory of LMV321M5X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV321M5X is usually 5 days.
3.What payment methods are accepted for LMV321M5X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV321M5X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV321M5X?
LMV321M5X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV321M5X 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 LMV321M5X?
For technical support, including LMV321M5X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV321M5X requirements.
6.How does Aetrix verify that LMV321M5X is sourced from the original manufacturer or authorized distributors?
All LMV321M5X 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 LMV321M5X meets industry standards.
7.What is the process for return or replacement of LMV321M5X?
All LMV321M5X units undergo pre-shipment inspection (PSI). If there is an issue with LMV321M5X, 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 LMV321M5X part is unused and in its original packaging.
Return procedure for LMV321M5X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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