My Inquiry
My Account
Texas Instruments LMV844MA/NOPB
- Part No.:
- LMV844MA/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMV844MA/NOPB.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:327
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LMV844MA/NOPB from Texas Instruments is a quad-channel, CMOS-input, rail-to-rail input and output (RRIO) operational amplifier optimized for high-impedance sensor interface and battery-powered instrumentation. It operates from 2.7 V to 12 V, delivers 4.5 MHz unity-gain bandwidth, 1 mA per channel supply current, and 500 µV max input offset voltage across −40°C to +125°C.
For engineers reviewing the LMV844MA/NOPB datasheet, LMV844MA/NOPB pinout, LMV844MA/NOPB application, or LMV844MA/NOPB equivalent, key selection criteria include its ultra-low input bias current (0.3 pA), rail-to-rail swing capability, wide supply range, and SOIC-14/TSSOP-14 packaging - critical for space-constrained, low-power analog front-ends in portable and industrial systems.
Technical Context
The LMV844MA/NOPB implements a CMOS input stage with anti-parallel ESD protection diodes limiting differential input voltage to ±300 mV. Its RRIO architecture enables full-swing signal conditioning at low supply voltages, supporting single-supply operation down to 2.7 V without headroom loss at either rail.
Each of the four independent amplifiers features 133 dB open-loop gain, 112 dB CMRR, and 108 dB PSRR - enabling precision DC-coupled gain stages and active filters where common-mode rejection and power supply noise immunity are essential, such as in medical sensor signal chains and high-resolution data acquisition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 12 V - supports direct integration into 3.3 V, 5 V, and ±5 V systems without level-shifting. |
| Unity-Gain Bandwidth | 4.5 MHz - enables stable closed-loop operation up to ~300 kHz with moderate gain (e.g., AV = 15), suitable for anti-aliasing and active filter stages. |
| Input Bias Current | 0.3 pA typical - preserves signal integrity when interfacing with high-impedance sources (e.g., pH electrodes, piezoelectric sensors). |
| Input Offset Voltage | ±500 µV maximum - ensures <1 LSB error in 12-bit systems with 2 V full-scale input range. |
| Output Swing | Rail-to-rail - delivers >99% of supply rail-to-rail swing at 10 kΩ load, minimizing dynamic range loss in single-supply configurations. |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive, industrial control, and extended-environment instrumentation. |
| Supply Current per Channel | 1.5 mA maximum - enables four-channel analog signal conditioning in sub-6 mA total system budget for battery longevity. |
Pinout & Package
LMV844MA/NOPB is packaged in a 14-pin SOIC (8.65 mm × 3.91 mm) with standard dual-in-line footprint and 1.27 mm pitch. Pin functions are fully compatible across LMV84x family variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 9, 13 | Inverting Input (−IN) | High-impedance CMOS node accepting feedback or signal inversion; protected by ±300 mV differential clamp. |
| 2, 6, 10, 14 | Noninverting Input (+IN) | High-impedance CMOS node for reference or signal injection; matched to −IN for common-mode rejection. |
| 3, 7, 11, 12 | Output (OUT) | Rail-to-rail capable output driving ≥2 kΩ loads; specified swing within 50 mV of rails at 10 kΩ. |
| 4 | Negative Supply (V−) | Ground or negative rail connection; supports single-supply (0 V) or split-supply (e.g., −5 V) operation. |
| 14 | Positive Supply (V+) | Primary power rail; accepts 2.7–12 V; decoupling required within 1 cm for stability at >1 MHz. |
Key Features
| Feature | Design Value |
|---|---|
| CMOS Input Stage | 0.3 pA input bias current enables direct coupling to MΩ-range sensors without significant DC error. |
| Rail-to-Rail Input/Output | Full input common-mode range (−0.2 V to V+ + 0.2 V) and output swing to within 32 mV of rails at 10 kΩ load. |
| Low Input Voltage Noise | 20 nV/√Hz at 1 kHz - maintains SNR in low-level signal amplification (e.g., thermocouple, strain gauge). |
| High DC Precision | 133 dB open-loop gain and 112 dB CMRR ensure <0.001% gain error and robust rejection of supply/ground noise. |
| Wide Temperature Range | Specified performance from −40°C to +125°C - eliminates derating concerns in automotive engine control or industrial motor drives. |
Applications
| Medical Sensor Interface | Battery-Powered Data Logger |
|---|---|
|
Use Scenario: Amplifying microvolt-level EEG or ECG signals from dry electrodes with minimal loading and no external bias network. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier buffer with ultra-high input impedance and rail-to-rail output swing into ADC driver stage. Use Value: 0.3 pA input bias avoids electrode polarization drift; 500 µV max VOS prevents baseline shift in 12-bit digitization. |
Use Scenario: Signal conditioning for multi-channel temperature/humidity sensors in solar-powered environmental monitoring nodes. IC Role / Device Role / Timing Role: Quad-channel sensor front-end providing simultaneous gain, filtering, and level-shifting before multiplexed ADC sampling. Use Value: 1 mA per channel enables 4-channel analog path within 5 mA total system budget; 2.7 V min supply extends battery life in Li-ion discharge curve. |
| Industrial Process Transmitter | Active Filter for Audio Preamp |
|
Use Scenario: Conditioning 4–20 mA loop sensor outputs in hazardous-area field transmitters requiring intrinsic safety compliance. IC Role / Device Role / Timing Role: High-side current sense amplifier and isolation interface buffer operating from 3.3 V isolated supply. Use Value: Rail-to-rail output ensures full utilization of 0–3.3 V ADC range; 125°C rating supports enclosure mounting near hot process piping. |
Use Scenario: 2nd-order Sallen-Key band-pass filter (100 Hz–10 kHz) in portable microphone preamplifier with 5 V USB power. IC Role / Device Role / Timing Role: Dual-amplifier active filter section implementing gain, Q-factor, and frequency selectivity in compact layout. Use Value: 4.5 MHz GBW supports filter stability with Q ≤ 5; low THD+N (0.003%) preserves audio fidelity without post-filtering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV9064IDR | Higher slew rate (6.5 V/µs), lower noise (16 nV/√Hz), but higher supply current (530 µA/channel vs 1 mA max); same SOIC-14 package. | Better for high-speed active filters or fast-settling data acquisition; less optimal for ultra-low-power battery use. | Select TLV9064IDR when bandwidth >5 MHz or noise <17 nV/√Hz is required; verify thermal dissipation at 125°C. |
| OPA491IDR | Zero-drift architecture (0.005 µV/°C drift), lower VOS (12 µV max), but narrower supply range (2.7–5.5 V) and higher cost. | Ideal for precision DC-coupled systems (e.g., weigh scales, lab equipment) where long-term offset stability dominates. | Choose OPA491IDR only if µV-level drift over temperature is mandatory; avoid in 12 V or high-temp (>85°C) designs. |
Compared with TLV9064IDR and OPA491IDR, LMV844MA/NOPB offers the broadest supply range (2.7–12 V) and widest temperature rating (−40°C to +125°C) among quad RRIO op amps at its price point, making it uniquely suited for ruggedized, multi-voltage industrial and automotive sensor nodes where power flexibility and reliability outweigh ultra-low-noise or zero-drift requirements.
Availability
LMV844MA/NOPB is available at Aetrix Electronics and suitable for medical sensor interfaces, battery-powered data loggers, industrial process transmitters, and active audio filters requiring stable component supply across extended temperature and voltage ranges.
Supply support for LMV844MA/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 specializing in analog and embedded processing technologies, with decades of expertise in precision op amp design and high-volume manufacturing.
The LMV84x product line was engineered for low-power, high-precision analog signal conditioning in portable and harsh-environment applications - emphasizing rail-to-rail operation, CMOS input integrity, and extended temperature reliability.
FAQ
What is the maximum supply voltage for LMV844MA/NOPB?
The absolute maximum supply voltage (V+ – V−) for LMV844MA/NOPB is 13.2 V, but the recommended operating range is 2.7 V to 12 V. Operation at 12 V is fully characterized across temperature and ensures all specifications - including 4.5 MHz bandwidth and rail-to-rail output - remain valid. Exceeding 13.2 V risks permanent damage.
Does LMV844MA/NOPB support true single-supply operation?
Yes, LMV844MA/NOPB supports true single-supply operation from 2.7 V to 12 V with rail-to-rail input and output. Its input common-mode range extends to V− − 0.2 V and V+ + 0.2 V, and output swings within 32 mV of each rail at 10 kΩ load - enabling direct interfacing with 0 V ground-referenced ADCs and sensors without level-shifting circuitry.
What is the input protection scheme on LMV844MA/NOPB?
LMV844MA/NOPB integrates anti-parallel ESD diodes between +IN and −IN pins, limiting differential input voltage to ±300 mV. Input current must be externally limited to ±10 mA. For applications with large transient differentials (e.g., relay bounce), a series 500 Ω resistor at the input is recommended to prevent diode conduction during slewing.
Can LMV844MA/NOPB drive capacitive loads directly?
LMV844MA/NOPB is stable with capacitive loads up to 20 pF in unity-gain configuration. For larger loads (e.g., ADC input capacitance >20 pF), a small isolation resistor (10–50 Ω) between amplifier output and capacitor is required to maintain phase margin. Figure 20 in the datasheet confirms stability margins versus CL.
Is LMV844MA/NOPB pin-compatible with other LMV84x variants?
No - LMV844MA/NOPB (quad, SOIC-14/TSSOP-14) is not pin-compatible with LMV841 (single, SC70-5) or LMV842 (dual, VSSOP-8/SOIC-8). However, its pinout matches LMV844 variants across SOIC and TSSOP packages, enabling direct PCB substitution between LMV844MA/NOPB and LMV844IPW (TSSOP-14) without layout changes.
LMV844MA/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMV®
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 2.5V/µs
- Gain Bandwidth Product:
- 4.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 4 pA
- Voltage - Input Offset:
- 50 µV
- Current - Supply:
- 1.03mA (x4 Channels)
- Current - Output / Channel:
- 37 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
LMV844MA/NOPB FAQ
1.How can I place an order for LMV844MA/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV844MA/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 LMV844MA/NOPB reliable?
The price and inventory of LMV844MA/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV844MA/NOPB is usually 5 days.
3.What payment methods are accepted for LMV844MA/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV844MA/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV844MA/NOPB?
LMV844MA/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV844MA/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 LMV844MA/NOPB?
For technical support, including LMV844MA/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV844MA/NOPB requirements.
6.How does Aetrix verify that LMV844MA/NOPB is sourced from the original manufacturer or authorized distributors?
All LMV844MA/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 LMV844MA/NOPB meets industry standards.
7.What is the process for return or replacement of LMV844MA/NOPB?
All LMV844MA/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMV844MA/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 LMV844MA/NOPB part is unused and in its original packaging.
Return procedure for LMV844MA/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMV844MA/NOPB Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
