My Inquiry
My Account
Texas Instruments LMV844QMA/NOPB
- Part No.:
- LMV844QMA/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMV844QMA/NOPB.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:692
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LMV844QMA/NOPB from Texas Instruments is a quad-channel, rail-to-rail input/output (RRIO), CMOS-input 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, draws only 1.03 mA per channel at ±5 V, and features 0.3 pA input bias current and 500 µV max input offset voltage - enabling precision signal conditioning in space-constrained portable systems.
For engineers reviewing the LMV844QMA/NOPB datasheet, LMV844QMA/NOPB pinout, LMV844QMA/NOPB application, or LMV844QMA/NOPB equivalent, key selection criteria include its guaranteed RRIO swing across 3.3 V/5 V/±5 V supplies, −40°C to +125°C automotive-grade temperature range, low 20 nV/√Hz input voltage noise, and compatibility with high-gain active filters and DAC buffers in area-sensitive PCB layouts.
Technical Context
The LMV844QMA/NOPB implements a CMOS input stage with anti-parallel ESD diodes limiting differential input voltage to ±300 mV, and supports single-supply (2.7–12 V) or dual-supply (±5 V) operation. Its rail-to-rail output stage maintains >95% of full-scale swing into 2 kΩ loads across all supply conditions.
Designed for stability with capacitive loads up to 100 pF, it achieves 67° phase margin and exhibits <0.006% THD+N at 1 kHz with 10 kΩ load - critical for low-distortion instrumentation amplifiers and active filter stages requiring wide dynamic range and minimal harmonic artifacts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 12 V (supports single-supply 3.3 V/5 V and dual ±5 V operation without level-shifting) |
| Unity-Gain Bandwidth | 4.5 MHz (enables stable gain-of-10 amplification up to ~450 kHz with adequate phase margin) |
| Input Bias Current | 0.3 pA typical (preserves signal integrity from high-Z sources like piezoelectric sensors or pH electrodes) |
| Input Offset Voltage | ±500 µV maximum (ensures <0.1% error in 0.5 V full-scale sensor interfaces without trimming) |
| Output Swing (RL = 10 kΩ) | Within 32 mV of rails at 5 V supply (delivers true 0–5 V output range for ADC drivers) |
| Supply Current per Channel | 1.03 mA at ±5 V (allows four independent channels in <4.2 mA total system budget) |
| Operating Temperature | −40°C to +125°C (qualified for under-hood automotive and industrial control environments) |
Pinout & Package
LMV844QMA/NOPB is packaged in a 14-pin SOIC (D package) with nominal body size 8.65 mm × 3.91 mm, optimized for automated assembly and thermal performance on standard FR-4 PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 11 | Inverting Input (−IN) | Four independent negative inputs - each requires external feedback network for closed-loop configuration |
| 2, 4, 6, 12 | Noninverting Input (+IN) | Four independent positive inputs - high-impedance CMOS node accepts direct connection to sensor outputs |
| 7 | V− | Negative supply rail - must be connected to ground (single-supply) or −5 V (dual-supply) |
| 14 | V+ | Positive supply rail - accepts 2.7–12 V or +5 V; decoupling capacitor required within 1 cm |
| 8, 9, 10, 13 | Output | Four buffered outputs - rail-to-rail swing enables full utilization of 12-bit+ ADC reference ranges |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-Rail Input/Output (RRIO) | Enables direct interfacing to 0–3.3 V or 0–5 V ADCs and microcontroller analog inputs without level-shifting circuitry |
| CMOS Input Stage | Delivers 0.3 pA input bias current - critical for maintaining accuracy in high-impedance transducer circuits (>1 MΩ source impedance) |
| Low Power Operation | 1.03 mA per channel at ±5 V allows four-channel signal conditioning in <4.2 mA total, extending battery life in portable instruments |
| Wide Supply Range | 2.7–12 V operation supports legacy 5 V systems, modern 3.3 V MCUs, and dual ±5 V test equipment without redesign |
| Automotive Temperature Range | −40°C to +125°C qualification ensures reliability in engine control units, ADAS sensor nodes, and industrial PLC modules |
Applications
| High-Impedance Sensor Interface | Battery-Powered Instrumentation |
|---|---|
Use Scenario: Amplifying signals from pH electrodes, piezoresistive pressure sensors, or capacitive humidity sensors with source impedances >100 kΩ. IC Role / Device Role / Timing Role: Precision DC-coupled buffer and gain stage preserving nanovolt-level signal integrity. Use Value: 0.3 pA input bias current prevents voltage drop across high-Z sources, eliminating measurement drift and calibration drift over time. |
Use Scenario: Signal conditioning in handheld multimeters, portable gas analyzers, and wearable health monitors operating from coin-cell or Li-ion batteries. IC Role / Device Role / Timing Role: Low-power, multi-channel analog front-end delivering rail-to-rail output for successive-approximation ADCs. Use Value: 1.03 mA per channel enables four simultaneous sensor channels while consuming <4.2 mA total - extending runtime by >30% vs comparable op amps. |
| High-Gain Instrumentation Amplifier | DAC Buffers and Active Filters |
Use Scenario: Building 3-op-amp instrumentation amplifiers for strain gauge or thermocouple readouts requiring >100 dB CMRR and <1 µV/°C drift. IC Role / Device Role / Timing Role: Precision input-stage amplifier with 112 dB CMRR and 0.25 µV/°C offset drift at ±5 V. Use Value: Guaranteed 500 µV max VOS and 0.25 µV/°C TCVOS reduce calibration frequency and improve long-term measurement repeatability. |
Use Scenario: Driving 12-bit DAC outputs into RC active filters for anti-aliasing or tone generation in audio and motor control systems. IC Role / Device Role / Timing Role: Unity-gain stable buffer with 4.5 MHz GBW and 2.5 V/µs slew rate supporting 200 kHz filter cutoffs. Use Value: 20 nV/√Hz input noise and <0.006% THD+N preserve DAC resolution and prevent harmonic distortion in closed-loop control paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV844IDR | Same electrical specs and pinout; SOIC-14 package without lead-free/NOPB marking; RoHS-compliant but not automotive-qualified. | Lacks AEC-Q200 stress testing; suitable for commercial-grade instrumentation but not under-hood automotive use. | Select LMV844IDR only when automotive temperature qualification and Pb-free compliance are not required. |
| TLV9064IPWR | Higher 10 MHz GBW and 6.5 V/µs slew rate; 0.5 pA input bias current; same SOIC-14 footprint and RRIO operation. | Better suited for higher-frequency active filters and faster-settling DAC buffers; consumes 1.38 mA/channel at 5 V. | Choose TLV9064IPWR when bandwidth >4.5 MHz or settling time <1 µs is required, accepting higher supply current. |
Compared with LMV844QMA/NOPB, LMV844IDR offers identical performance without automotive qualification, while TLV9064IPWR trades 37% higher supply current for double the bandwidth - making LMV844QMA/NOPB optimal for precision, low-power, high-temperature sensor interfaces where speed is secondary to stability and efficiency.
Availability
LMV844QMA/NOPB is available at Aetrix Electronics and suitable for high-impedance sensor interface, battery-powered instrumentation, and automotive-grade signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LMV844QMA/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 amps and signal chain solutions.
The LMV84x family was designed specifically for low-power, high-accuracy analog signal conditioning in portable and automotive systems - emphasizing rail-to-rail operation, ultra-low input bias current, and robust performance across wide supply and temperature ranges.
FAQ
What is the maximum differential input voltage allowed for LMV844QMA/NOPB?
The LMV844QMA/NOPB has internal anti-parallel ESD diodes between inputs, limiting the maximum allowable differential input voltage to ±300 mV. Exceeding this may forward-bias the protection diodes and cause excessive input current. For applications with larger differential signals, external series resistors (e.g., 500 Ω) are recommended to limit current to <±10 mA as specified in the absolute maximum ratings.
Does LMV844QMA/NOPB support single-supply operation at 3.3 V?
Yes, LMV844QMA/NOPB is fully specified for 3.3 V single-supply operation. It guarantees rail-to-rail input common-mode range (–0.1 V to 3.4 V) and output swing within 50 mV of both rails under 10 kΩ load, enabling direct interfacing with 3.3 V microcontrollers and ADCs without level-shifting circuitry.
What is the open-loop gain of LMV844QMA/NOPB at 25°C and 5 V supply?
At TA = 25°C and V+ = 5 V, the LMV844QMA/NOPB delivers a minimum open-loop gain (AVOL) of 100 dB (10⁵ V/V) with RL = 10 kΩ and VO = 0.2 V to 4.8 V. Typical values reach 133 dB, ensuring high loop gain for precision closed-loop configurations such as instrumentation amplifiers and active filters.
Is LMV844QMA/NOPB qualified for automotive applications?
Yes, LMV844QMA/NOPB is automotive-grade qualified with an operating temperature range of –40°C to +125°C and is manufactured under TI's automotive quality管理体系. The "Q" in the part number denotes AEC-Q200 qualification, making it suitable for engine control, body electronics, and ADAS sensor signal conditioning.
How does the input offset voltage drift behave over temperature for LMV844QMA/NOPB?
LMV844QMA/NOPB exhibits a maximum input offset voltage drift (TCVOS) of ±5 µV/°C across the full –40°C to +125°C range, with typical performance of 0.25 µV/°C at ±5 V supply. This low drift ensures stable DC accuracy in thermally varying environments such as automotive cabins or industrial enclosures without frequent recalibration.
LMV844QMA/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:
- 0.3 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
LMV844QMA/NOPB FAQ
1.How can I place an order for LMV844QMA/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV844QMA/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 LMV844QMA/NOPB reliable?
The price and inventory of LMV844QMA/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV844QMA/NOPB is usually 5 days.
3.What payment methods are accepted for LMV844QMA/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV844QMA/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV844QMA/NOPB?
LMV844QMA/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV844QMA/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 LMV844QMA/NOPB?
For technical support, including LMV844QMA/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV844QMA/NOPB requirements.
6.How does Aetrix verify that LMV844QMA/NOPB is sourced from the original manufacturer or authorized distributors?
All LMV844QMA/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 LMV844QMA/NOPB meets industry standards.
7.What is the process for return or replacement of LMV844QMA/NOPB?
All LMV844QMA/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMV844QMA/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 LMV844QMA/NOPB part is unused and in its original packaging.
Return procedure for LMV844QMA/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMV844QMA/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…
