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Texas Instruments LM7322QMA/NOPB
- Part No.:
- LM7322QMA/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM7322QMA/NOPB.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:260
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Product details
Overview
LM7322QMA/NOPB from Texas Instruments is a dual rail-to-rail input/output operational amplifier engineered for high-output-current, wide-supply-voltage, and unlimited capacitive load applications. It delivers ±125mA output current, 24MHz gain bandwidth, 35V/µs slew rate, and operates across −40°C to +125°C with AEC-Q100 Grade 1 qualification - enabling use in automotive high-side sensing and MOSFET gate driving.
For engineers reviewing the LM7322QMA/NOPB datasheet, LM7322QMA/NOPB pinout, LM7322QMA/NOPB application, or LM7322QMA/NOPB equivalent, key selection criteria include its rail-to-rail I/O swing (±120mV from rails at 2kΩ), 1.35mA/channel supply current, 12nV/√Hz input voltage noise, −113dB THD+N, and guaranteed stability into any capacitive load - critical for precision analog power stage control and sensor interface designs.
Technical Context
The LM7322QMA/NOPB implements a robust complementary bipolar input stage with rail-to-rail common-mode range extending 0.1V beyond both supply rails, enabling true high-side and low-side current sensing without level-shifting circuitry. Its output stage uses a Class AB architecture optimized for high-current sourcing/sinking while maintaining 90dB CMRR over 2.7V–32V supplies.
Unlike standard op-amps, it features an internal compensation scheme that eliminates phase-margin degradation with increasing capacitive load - verified up to 10µF - and maintains ≥25° phase margin even with 100nF load and 600Ω series resistance, making it suitable for direct connection to TFT panel lines and ADC input buffers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7V to 32V (±1.35V to ±16V) - supports single- and dual-supply operation in automotive 12V/24V and industrial 24V/32V systems. |
| Output Current | ±125mA (typ @ VS = 32V) - drives power transistors, MOSFET gates, and optocouplers directly without external buffers. |
| Gain Bandwidth Product | 24MHz (typ @ RL = 2kΩ, CL = 20pF) - enables stable closed-loop gain ≥10 at 2MHz for active filter and signal conditioning. |
| Slew Rate | 35V/µs (typ @ AV = +1, VI = 10V step) - ensures <100ns settling to 0.1% for 10V output steps, critical for fast pulse amplification. |
| Input Voltage Noise | 12nV/√Hz (typ @ f = 2kHz) - preserves SNR in low-level sensor signal chains such as photodiode biasing and proximity sensing. |
| Capacitive Load Tolerance | Unlimited - eliminates need for isolation resistors or external compensation when driving ADC inputs, LCD drivers, or long cables. |
| Operating Temperature | −40°C to +125°C - qualified per AEC-Q100 Grade 1 for under-hood automotive modules and industrial motor controls. |
Pinout & Package
LM7322QMA/NOPB is housed in an 8-pin SOIC (D) package measuring 4.90mm × 3.90mm, with exposed pad not present. Pin functions are fully defined per TI SNOSAW8F Rev July 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT A) | Output for Amplifier A | Delivers rail-to-rail sourced/sunk current up to ±125mA; connects directly to load without series resistor for capacitive loads. |
| 2 (−IN A) | Inverting Input for Amplifier A | High-impedance node (IB = 0.4µA typ); accepts signals from V− − 0.1V to V+ + 0.1V - enables true high-/low-side sensing. |
| 3 (+IN A) | Non-inverting Input for Amplifier A | Same common-mode range as −IN A; used for unity-gain buffer or differential sensing configurations. |
| 4 (V−) | Negative Supply | Reference for dual-supply operation; also serves as return path for sinking current in single-supply configurations. |
| 5 (N/C) | No Connection | Internally unconnected; must remain floating - no routing or grounding permitted. |
| 6 (OUT B) | Output for Amplifier B | Independent output channel with identical specs to OUT A; supports dual-path signal processing or redundancy. |
| 7 (−IN B) | Inverting Input for Amplifier B | Electrically isolated from Amplifier A inputs; allows independent feedback networks per channel. |
| 8 (V+) | Positive Supply | Accepts up to +32V; supplies both amplifiers; PSRR >74dB ensures immunity to supply ripple in noisy environments. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output swing | Operates with input common-mode voltage from V− − 0.1V to V+ + 0.1V and output swing within 120mV of either rail at 2kΩ load - eliminates level-shifting in single-supply systems. |
| Unlimited capacitive load drive | Stable with any value of capacitive load (tested to 10µF) without external compensation - simplifies design of ADC drivers and display line buffers. |
| High-output current capability | ±125mA continuous output per channel enables direct drive of power devices (MOSFETs, IGBTs) and analog optocouplers without discrete buffers. |
| AEC-Q100 Grade 1 qualification | Validated for automotive applications operating from −40°C to +125°C ambient - meets reliability requirements for engine control, ADAS, and body electronics. |
| Low distortion and noise | −113dB THD+N at 1kHz and 12nV/√Hz input voltage noise preserve signal fidelity in precision measurement and audio signal paths. |
Applications
| Automotive High-Side Sensing | Capacitive Proximity Sensor Interface |
|---|---|
Use Scenario: Monitoring battery current in 12V/48V hybrid vehicle power distribution units using shunt-based measurement. IC Role / Device Role / Timing Role: Dual-channel configured as high-side current sense amplifier (A) and reference buffer (B) with rail-to-rail input spanning ground to battery voltage. Use Value: Eliminates need for expensive isolated amplifiers or level shifters; ±125mA output drives 100nF anti-aliasing filter directly. |
Use Scenario: Signal conditioning for self-capacitance touch panels in automotive infotainment displays. IC Role / Device Role / Timing Role: Transimpedance amplifier converting pA-level displacement current from electrode to voltage, followed by gain stage. Use Value: 12nV/√Hz noise floor and unlimited capacitive load tolerance enable stable 100kHz modulation without ringing or overshoot. |
| Photodiode Biasing Circuit | MOSFET Gate Driver for Power Supplies |
Use Scenario: Precision optical sensing in automotive cabin occupancy detection using reverse-biased photodiodes. IC Role / Device Role / Timing Role: Low-noise transimpedance amplifier with adjustable bias voltage applied via VCM control. Use Value: Input common-mode range extending 0.1V beyond rails allows precise photodiode biasing at V+ − 0.1V, minimizing dark current drift. |
Use Scenario: Driving N-channel MOSFETs in synchronous buck converters for ADAS camera power modules. IC Role / Device Role / Timing Role: Unity-gain buffer isolating PWM controller from gate capacitance; provides fast 35V/µs slew for <100ns turn-on. Use Value: ±125mA peak output current charges 5nF gate capacitance in <40ns, reducing switching losses and improving efficiency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-output-current, rail-to-rail op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM7322QDRQ1 | Identical electrical specs and AEC-Q100 Grade 1 qualification; differs only in tape-and-reel packaging (QDRQ1) vs tube (QMA/NOPB). | No functional difference; QDRQ1 intended for automated SMT assembly, QMA/NOPB for prototyping or low-volume hand-soldering. | Select QMA/NOPB for evaluation and small-batch builds; QDRQ1 for production runs requiring pick-and-place compatibility. |
| TLV2772QDR | Lower output current (±40mA), lower GBW (10MHz), higher supply current (1.6mA/channel); AEC-Q100 Grade 2 (−40°C to +105°C). | Not suitable for MOSFET gate driving or high-current sensor excitation; limited to low-power signal conditioning in less demanding automotive zones. | Choose TLV2772QDR only if output current <50mA suffices and extended temperature range is not required. |
Compared with LM7322QMA/NOPB, LM7322QDRQ1 offers identical performance in automated manufacturing contexts, while TLV2772QDR trades output drive and bandwidth for lower quiescent power - making it viable only where load current and speed requirements are relaxed.
Availability
LM7322QMA/NOPB is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interfaces, and high-reliability embedded control systems requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for LM7322QMA/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 experience in high-reliability automotive and industrial IC design.
The LM7322QMA/NOPB belongs to TI's LM732x family of rail-to-rail I/O op-amps designed specifically for high-output-current, wide-supply-voltage, and capacitive-load-tolerant applications in automotive, industrial, and test equipment.
FAQ
What is the maximum capacitive load the LM7322QMA/NOPB can drive without instability?
The LM7322QMA/NOPB is explicitly designed to drive unlimited capacitive loads - verified stable up to at least 10µF in TI's characterization data. Its internal compensation maintains ≥25° phase margin even with 100nF load and 600Ω series resistance. No external isolation resistor is required for stability, though one may be added to improve settling time in precision applications.
Does the LM7322QMA/NOPB support true rail-to-rail input common-mode voltage?
Yes - the LM7322QMA/NOPB accepts input voltages from (V−) − 0.1V to (V+) + 0.1V, exceeding rail-to-rail by 100mV on each side. This enables direct high-side sensing (e.g., measuring current through a shunt placed between load and V+) and low-side sensing (shunt to ground) without external level-shifting circuitry.
What is the typical supply current per channel for the LM7322QMA/NOPB?
The LM7322QMA/NOPB draws 1.35mA per channel under typical conditions (VS = ±15V, TA = 25°C). Over temperature (−40°C to +125°C), supply current rises to a maximum of 2.23mA per channel. This low quiescent current enables use in always-on automotive modules without excessive power drain.
Is the LM7322QMA/NOPB pin-compatible with other dual op-amps in SOIC-8 packages?
No - the LM7322QMA/NOPB has a nonstandard pinout: OUT A (pin 1), −IN A (pin 2), +IN A (pin 3), V− (pin 4), N/C (pin 5), OUT B (pin 6), −IN B (pin 7), V+ (pin 8). It is not pin-compatible with industry-standard dual op-amps like LM358 or TL072, which place V+ and V− on pins 8 and 4 respectively. PCB layout must follow TI's documented pin mapping.
What AEC-Q100 grade is assigned to the LM7322QMA/NOPB?
The LM7322QMA/NOPB is AEC-Q100 Grade 1 qualified, meaning it is tested and rated for operation from −40°C to +125°C ambient temperature - meeting requirements for powertrain, chassis, and advanced driver-assistance systems (ADAS) applications where extended thermal performance is mandatory.
LM7322QMA/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 18V/µs
- Gain Bandwidth Product:
- 20 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1.1 µA
- Voltage - Input Offset:
- 700 µV
- Current - Supply:
- 2.5mA (x2 Channels)
- Current - Output / Channel:
- 100 mA
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 32 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LM7322QMA/NOPB FAQ
1.How can I place an order for LM7322QMA/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM7322QMA/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 LM7322QMA/NOPB reliable?
The price and inventory of LM7322QMA/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM7322QMA/NOPB is usually 5 days.
3.What payment methods are accepted for LM7322QMA/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM7322QMA/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM7322QMA/NOPB?
LM7322QMA/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM7322QMA/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 LM7322QMA/NOPB?
For technical support, including LM7322QMA/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM7322QMA/NOPB requirements.
6.How does Aetrix verify that LM7322QMA/NOPB is sourced from the original manufacturer or authorized distributors?
All LM7322QMA/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 LM7322QMA/NOPB meets industry standards.
7.What is the process for return or replacement of LM7322QMA/NOPB?
All LM7322QMA/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM7322QMA/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 LM7322QMA/NOPB part is unused and in its original packaging.
Return procedure for LM7322QMA/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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