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Texas Instruments LM7322QMAX/NOPB
- Part No.:
- LM7322QMAX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM7322QMAX/NOPB.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,262
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Product details
Overview
LM7322QMAX/NOPB from Texas Instruments is a dual rail-to-rail input/output operational amplifier designed for high-output-current, wide-supply-voltage applications in automotive and industrial systems. It delivers ±125mA output current, 24MHz gain bandwidth, 35V/µs slew rate, unlimited capacitive load drive capability, and operates across −40°C to +125°C with AEC-Q100 Grade 1 qualification.
For engineers reviewing the LM7322QMAX/NOPB datasheet, LM7322QMAX/NOPB pinout, LM7322QMAX/NOPB application, or LM7322QMAX/NOPB equivalent, this device is selected for high-side sensing, MOSFET gate driving, photodiode biasing, and analog optocoupler interfacing where rail-to-rail swing, robust capacitive load tolerance, and supply voltage insensitivity are critical.
Technical Context
The LM7322QMAX/NOPB employs a proprietary output stage enabling stable operation into unlimited capacitive loads without external compensation - verified up to 10,000pF with >25° phase margin at ±15V. Its input stage supports common-mode voltage from (V−) − 0.1V to (V+) + 0.1V, enabling true high- and low-side current sensing across 2.7V–32V supplies.
Key performance is supply-voltage invariant: gain bandwidth (24MHz), slew rate (35V/µs), and THD+N (−113dB at 1kHz) remain consistent from ±1.35V to ±16V. Input voltage noise (11.9nV/√Hz) and current noise (0.5pA/√Hz) are specified at 2kHz, supporting precision signal conditioning in wide-bandwidth sensor interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7V to 32V (±1.35V to ±16V) - enables single- or dual-supply operation in battery-powered, automotive, and industrial power rails. |
| Output Current | ±125mA - drives heavy loads including MOSFET gates, varactor diodes, and analog optocouplers without external buffers. |
| Gain Bandwidth Product | 24MHz - supports closed-loop gain ≥10 at >2MHz, suitable for active filters and fast-settling ADC drivers. |
| Slew Rate | 35V/µs - ensures <100ns 10V step response, critical for pulse amplification and wide-dynamic-range signal paths. |
| Capacitive Load Drive | Unlimited - eliminates need for isolation resistors in TFT panel buffers, piezo drivers, and long-cable sensor interfaces. |
| Input Common-Mode Range | (V−) − 0.1V to (V+) + 0.1V - enables direct connection to shunt resistors below ground or above V+ in current-sense topologies. |
| THD+N | −113dB at 1kHz - meets audio-grade and precision measurement requirements when driving 100kΩ loads at ±15V. |
Pinout & Package
Dual-channel SOIC-8 package (D package), 4.90mm × 3.90mm footprint, surface-mount, RoHS-compliant, with exposed pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT A) | Output for Amplifier A | Full rail-to-rail swing output capable of sourcing/sinking ±125mA; connects directly to MOSFET gate or capacitive load. |
| 2 (−IN A) | Inverting Input for Amplifier A | High-impedance node (IB = 0.4µA max); used in transimpedance or inverting gain configurations. |
| 3 (+IN A) | Non-inverting Input for Amplifier A | Supports common-mode voltage beyond rails; enables high-side shunt monitoring with VCM = V+ + 0.1V. |
| 4 (V−) | Negative Supply | Reference for both amplifiers; must be decoupled with ≥0.1µF ceramic capacitor near pin. |
| 5 (N/C) | No Connection | Internally unused; leave floating or grounded per layout best practices - no electrical function. |
| 6 (OUT B) | Output for Amplifier B | Independent output identical to OUT A; supports dual-path signal conditioning or redundancy. |
| 7 (−IN B) | Inverting Input for Amplifier B | Electrically isolated from Channel A; allows independent feedback networks without crosstalk. |
| 8 (V+) | Positive Supply | Accepts up to 32V total supply; PSRR >78dB ensures stability in noisy automotive 12V/24V systems. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables full dynamic range utilization in low-voltage (2.7V) and high-voltage (±15V) systems without headroom loss. |
| AEC-Q100 Grade 1 | Qualified for automotive ambient temperatures (−40°C to +125°C) with lifetime reliability validation per stress test protocols. |
| Unlimited capacitive load drive | Eliminates external series resistance in LCD column drivers, piezoelectric actuator interfaces, and long-line transmission. |
| Supply-insensitive parameters | GBW, slew rate, and THD+N vary <±5% from 2.7V to 32V - simplifies design across multiple platform voltages. |
| Low input voltage noise | 11.9nV/√Hz at 2kHz supports precision amplification of low-level sensor signals (e.g., photodiode, strain gauge). |
| High CMRR (109dB typical) | Maintains accuracy in high-common-mode environments such as motor-phase current sensing or isolated power supply monitoring. |
Applications
| High-Side Current Sensing | Photodiode Biasing |
|---|---|
|
Use Scenario: Monitoring battery pack or motor phase current using a shunt resistor placed between load and positive supply rail. IC Role / Device Role / Timing Role: Amplifier A configured as non-inverting difference amplifier with VCM extending to V+ + 0.1V, rejecting common-mode voltage up to 32V. Use Value: Enables accurate sub-milliohm shunt measurement without level-shifting circuitry or dedicated current-sense ICs. |
Use Scenario: Providing stable reverse-bias voltage to a photodiode in optical smoke detector or spectrometer front-end. IC Role / Device Role / Timing Role: Transimpedance amplifier (TIA) with rail-to-rail output swing and low input current noise (0.5pA/√Hz). Use Value: Maximizes signal-to-noise ratio for weak photocurrents while maintaining stability into photodiode junction capacitance. |
| Driving Analog Optocouplers | MOSFET Gate Driving |
|
Use Scenario: Isolating control signals in industrial PLC outputs or medical equipment safety barriers using linear analog optocouplers. IC Role / Device Role / Timing Role: Precision voltage-to-current converter driving LED anode with matched gain and linearity over temperature. Use Value: Achieves <0.01% gain error and −113dB THD+N, preserving analog fidelity across 0–10V control ranges. |
Use Scenario: Switching high-current N-channel MOSFETs in DC-DC synchronous buck converters or motor H-bridges. IC Role / Device Role / Timing Role: High-speed buffer amplifier delivering ±125mA peak current to charge/discharge gate capacitance rapidly. Use Value: Reduces switching losses by achieving <100ns 10V gate transitions, improving efficiency at 100kHz–1MHz switching frequencies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual high-output-current op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM7322MA/NOPB | Same silicon, SOIC-8 package but commercial temperature grade (−40°C to +85°C), non-AEC-Q100 qualified. | Lacks automotive qualification; unsuitable for under-hood or safety-critical vehicle subsystems. | Select LM7322QMAX/NOPB when AEC-Q100 Grade 1 compliance and extended temperature operation are mandatory. |
| OPA2991QDGKR | Lower quiescent current (0.58mA/channel vs. 1.35mA), lower slew rate (21V/µs), same rail-to-rail I/O and AEC-Q100 Grade 1 rating. | Better suited for always-on, low-power automotive modules; insufficient for high-speed gate driving or high-THD+N applications. | Choose OPA2991QDGKR only when supply current is constrained and 24MHz GBW or 35V/µs slew rate are not required. |
Compared with LM7322MA/NOPB and OPA2991QDGKR, LM7322QMAX/NOPB uniquely combines automotive qualification, 24MHz bandwidth, ±125mA drive, and unlimited capacitive load tolerance - making it the sole option for high-fidelity, high-current, high-reliability dual op amp functions in harsh environments.
Availability
LM7322QMAX/NOPB is available at Aetrix Electronics and suitable for automotive ADAS sensor interfaces, industrial motor control feedback loops, and medical patient-monitoring analog front-ends requiring stable component supply across extended temperature and long product lifecycles.
Supply support for LM7322QMAX/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 high-reliability op amps and automotive-grade components.
The LM7322QMAX/NOPB belongs to TI's LM732x family of rail-to-rail I/O op amps engineered for demanding industrial and automotive applications where output drive strength, capacitive load stability, and temperature resilience are essential.
FAQ
What is the maximum capacitive load the LM7322QMAX/NOPB can drive without oscillation?
The LM7322QMAX/NOPB is explicitly designed for unlimited capacitive load drive - verified stable with ≥10,000pF loads at ±15V supply and unity-gain configuration. No external isolation resistor is required, unlike most general-purpose op amps. This capability is confirmed in Figure 5-31 and Section 6.4.1 of the official datasheet.
Does the LM7322QMAX/NOPB support true rail-to-rail input common-mode voltage?
Yes. The LM7322QMAX/NOPB accepts input common-mode voltage from (V−) − 0.1V to (V+) + 0.1V - exceeding rail limits by 100mV on both sides. This enables direct high-side sensing (e.g., shunt above V+) and below-ground current measurement without level shifters or external bias networks.
Is the LM7322QMAX/NOPB pin-compatible with other LM7322 variants?
Yes. LM7322QMAX/NOPB uses the standard SOIC-8 (D) package and shares identical pinout with LM7322MA/NOPB and LM7322MM/NOPB (VSSOP-8). Pin functions match Table 4-1 in the datasheet: OUT A (1), −IN A (2), +IN A (3), V− (4), N/C (5), OUT B (6), −IN B (7), V+ (8).
What is the guaranteed output voltage swing for LM7322QMAX/NOPB at ±15V supply?
At ±15V supply and TA = 25°C, the LM7322QMAX/NOPB delivers output swing within 50mV of each rail (high) and 50mV of each rail (low) into 10kΩ load. Under heavier load (2kΩ), swing degrades to ≤250mV from rails - fully characterized in Figure 5-5 and Table 5.5 Electrical Characteristics.
How does the LM7322QMAX/NOPB achieve AEC-Q100 Grade 1 qualification?
The LM7322QMAX/NOPB undergoes full AEC-Q100 stress testing including HTOL (1000h at 125°C), TC (1000 cycles −40°C to +125°C), ESD (HBM ±2000V), and AC/DC parametric verification across −40°C to +125°C. The "Q" suffix denotes automotive qualification; "MAX" indicates SOIC-8 packaging; "NOPB" confirms lead-free/RoHS compliance.
LM7322QMAX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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
LM7322QMAX/NOPB FAQ
1.How can I place an order for LM7322QMAX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM7322QMAX/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 LM7322QMAX/NOPB reliable?
The price and inventory of LM7322QMAX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM7322QMAX/NOPB is usually 5 days.
3.What payment methods are accepted for LM7322QMAX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM7322QMAX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM7322QMAX/NOPB?
LM7322QMAX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM7322QMAX/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 LM7322QMAX/NOPB?
For technical support, including LM7322QMAX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM7322QMAX/NOPB requirements.
6.How does Aetrix verify that LM7322QMAX/NOPB is sourced from the original manufacturer or authorized distributors?
All LM7322QMAX/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 LM7322QMAX/NOPB meets industry standards.
7.What is the process for return or replacement of LM7322QMAX/NOPB?
All LM7322QMAX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM7322QMAX/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 LM7322QMAX/NOPB part is unused and in its original packaging.
Return procedure for LM7322QMAX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM7322QMAX/NOPB Tags
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LM358DT
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LM358DR
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