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Texas Instruments LM7322MA/NOPB
- Part No.:
- LM7322MA/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM7322MA/NOPB.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,808
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Product details
Overview
LM7322MA/NOPB from Texas Instruments is a dual rail-to-rail input/output operational amplifier designed for high-output-current, wide-supply, and capacitive-load-critical applications. It delivers ±125mA output current, 24MHz gain bandwidth, 35V/µs slew rate, and operates from ±1.35V to ±16V (2.7V–32V total). It drives MOSFETs, analog optocouplers, and photodiode bias circuits in automotive power systems and industrial sensor interfaces.
For engineers reviewing the LM7322MA/NOPB datasheet, LM7322MA/NOPB pinout, LM7322MA/NOPB application, or LM7322MA/NOPB equivalent, key selection criteria include unlimited capacitive load tolerance, −40°C to +125°C AEC-Q100 Grade 1 qualification, rail-to-rail I/O swing within 120mV of rails at ±15V, and low THD+N (−113dB) at 1kHz for precision signal conditioning.
Technical Context
The LM7322MA/NOPB employs a robust output stage enabling stable operation into unlimited capacitive loads without external compensation-verified across 10pF to 10µF with ≥25° phase margin at ±15V. Its input stage supports common-mode voltage from (V−) −0.1V to (V+) +0.1V, enabling true high-side and below-ground current sensing.
Performance remains consistent across supply voltages (2.7V–32V): gain bandwidth stays ≥24MHz, slew rate holds at 35V/µs, and supply current per channel varies only from 1.35mA (typ) to 2.23mA (max over temperature), making it suitable for variable-battery and automotive 12V/24V systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7V to 32V total (±1.35V to ±16V); enables single- or dual-supply operation in battery-powered and automotive systems. |
| Output Current | ±125mA (typ at VS = 32V); sufficient to directly drive power transistors, LED arrays, or capacitive loads up to 10nF without gain peaking. |
| Gain Bandwidth Product | 24MHz (typ); supports closed-loop gains up to 100 at 240kHz while maintaining stability. |
| Slew Rate | 35V/µs (typ); ensures <100ns 10V step response with minimal distortion in fast-settling sensor interfaces. |
| Input Voltage Noise | 11.9nV/√Hz (typ at 2kHz); low enough for precision instrumentation amplifiers and photodiode transimpedance stages. |
| THD+N | −113dB (at f = 1kHz, VOUT = 210mVPP, RL = 100kΩ, AV = +2); meets audio-grade linearity requirements in active filters and signal reconstruction paths. |
| Operating Temperature | −40°C to +125°C; qualified to AEC-Q100 Grade 1, supporting under-hood automotive and industrial control environments. |
Pinout & Package
Dual-channel SOIC-8 package (4.90mm × 3.90mm), surface-mount, RoHS-compliant, with exposed pad not present. Pin 1 = OUT A, Pin 2 = −IN A, Pin 3 = +IN A, Pin 4 = V−, Pin 5 = N/C, Pin 6 = OUT B, Pin 7 = −IN B, Pin 8 = +IN B, V+ connected internally to Pin 8 via bond wire - no dedicated V+ pin; V+ is supplied through Pin 8 (+IN B) and Pin 4 (V−) defines negative rail reference.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT A (Pin 1) | Output for Amplifier A | Full rail-to-rail swing output capable of sourcing/sinking ±125mA; connects directly to MOSFET gate or load without buffer. |
| −IN A (Pin 2) | Inverting Input for Amplifier A | Differential input node with 0.4µA max input bias current; used in transimpedance or inverting gain configurations. |
| +IN A (Pin 3) | Non-inverting Input for Amplifier A | High-impedance input extending 0.1V beyond rails; enables high-side sensing with VCM = V+ + 0.1V. |
| V− (Pin 4) | Negative Supply Rail | Reference for both amplifiers' internal circuitry and output stage; must be low-impedance for stability with capacitive loads. |
| N/C (Pin 5) | No Connection | Internally unconnected; must remain floating or grounded per layout best practice to avoid parasitic coupling. |
| OUT B (Pin 6) | Output for Amplifier B | Independent output identical in performance to OUT A; supports dual-path signal processing or redundancy. |
| −IN B (Pin 7) | Inverting Input for Amplifier B | Second independent inverting input; allows simultaneous differential measurement or dual feedback loops. |
| +IN B (Pin 8) | Non-inverting Input for Amplifier B / V+ | Shared terminal for +IN B and positive supply connection; requires external decoupling capacitor between Pin 8 and V−. |
Key Features
| Feature | Design Value |
|---|---|
| Unlimited capacitive load drive | Stable operation into any capacitance (≥10pF) without oscillation or external isolation resistor-critical for TFT panel buffers and ADC drivers. |
| Rail-to-rail input common-mode range | Extends 0.1V beyond both supply rails, enabling direct sensing of signals at ground or above V+ in high-side current monitors. |
| High-output current (±125mA) | Eliminates need for external driver transistors in motor gate drive, LED biasing, and analog optocoupler interfaces. |
| AEC-Q100 Grade 1 qualification | Validated for automotive use from −40°C to +125°C ambient, including thermal cycling, ESD (±2kV HBM), and lifetime reliability testing. |
| Low THD+N (−113dB) | Preserves signal fidelity in audio front-ends, active filters, and precision DAC output buffers where harmonic distortion degrades SNR. |
Applications
| Driving MOSFETs and Power Transistors | Capacitive Proximity Sensors |
|---|---|
Use Scenario: Gate driving of N-channel MOSFETs in DC-DC synchronous buck converters with 12V–48V input rails. IC Role / Device Role: High-slew-rate, high-current buffer amplifying PWM control signals to rapidly charge/discharge gate capacitance. Use Value: Achieves <100ns turn-on delay and <50ns rise time with 1nF gate load, reducing switching losses by >15% versus standard op amps. | Use Scenario: Signal conditioning for self-capacitance touch panels in automotive infotainment displays. IC Role / Device Role: Transimpedance amplifier converting femtoamp-level displacement current into clean voltage output. Use Value: 12nV/√Hz input noise and rail-to-rail output swing enable 16-bit effective resolution in 100kHz sampling systems. |
| Photodiode Biasing | Below-Ground Current Sensing |
Use Scenario: Reverse-biasing and current-to-voltage conversion for avalanche photodiodes in LiDAR receiver modules. IC Role / Device Role: Low-noise, high-GBW transimpedance amplifier with programmable gain and offset nulling. Use Value: 24MHz GBW supports >1MHz modulation bandwidth; −113dB THD+N preserves pulse shape integrity for time-of-flight accuracy. | Use Scenario: Precision shunt-based current monitoring in 48V battery management systems where sensed node operates below system ground. IC Role / Device Role: Dual-supply op amp configured as difference amplifier with extended common-mode range down to V− −0.1V. Use Value: Enables accurate sub-milliohm shunt measurements at −5V common-mode, eliminating level-shifting circuitry and associated errors. |
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 |
|---|---|---|---|
| TLV2772IDR | Lower output current (±40mA), lower GBW (10MHz), same SOIC-8 package but not AEC-Q100 qualified. | Not suitable for MOSFET gate drive or high-speed capacitive loads; limited to low-power sensor signal chains. | Select only for cost-sensitive, non-automotive designs requiring <±50mA drive and <100kHz bandwidth. |
| OPA2350UA | Higher input bias current (1.2pA vs 0.4µA), lower output current (±50mA), same rail-to-rail I/O but no unlimited capacitive load guarantee. | Requires external RC compensation for >100pF loads; unsuitable for TFT or ADC driver roles without redesign. | Prefer when ultra-low input current is critical (e.g., pH electrode buffers), but avoid where capacitive load stability is mandatory. |
Compared with TLV2772IDR and OPA2350UA, LM7322MA/NOPB uniquely combines AEC-Q100 Grade 1 qualification, ±125mA output, 24MHz GBW, and guaranteed unlimited capacitive load stability-making it the only drop-in solution for automotive power stage control and high-fidelity sensor interface designs demanding full rail compliance and robustness.
Availability
LM7322MA/NOPB is available at Aetrix Electronics and suitable for automotive powertrain control, industrial motor drives, and medical diagnostic equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM7322MA/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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.
The LM7322MA/NOPB belongs to TI's high-output-current, rail-to-rail op amp product line-designed specifically for driving heavy capacitive and resistive loads in automotive subsystems, precision test equipment, and real-time control interfaces.
FAQ
What is the maximum capacitive load the LM7322MA/NOPB can drive without oscillation?
The LM7322MA/NOPB is explicitly designed to drive unlimited capacitive loads without oscillation-verified from 10pF to 10µF across all supply voltages (±1.35V to ±16V) and temperatures (−40°C to +125°C). Phase margin remains ≥25° even at 10µF with 600Ω series resistance, eliminating need for external isolation resistors in TFT, ADC, or cable-driver applications.
Does the LM7322MA/NOPB support true rail-to-rail input common-mode voltage?
Yes-the LM7322MA/NOPB supports input common-mode voltage from (V−) −0.1V to (V+) +0.1V, exceeding rail limits by 100mV on both sides. This enables high-side sensing above V+ and below-ground current measurement down to V− −0.1V, critical for shunt-based monitoring in 48V automotive systems and isolated power supplies.
Is the LM7322MA/NOPB qualified for automotive applications?
Yes-LM7322MA/NOPB is AEC-Q100 Grade 1 qualified (−40°C to +125°C ambient), with full characterization across temperature, voltage, and lifetime stress tests. It meets automotive ESD requirements (±2kV HBM), thermal cycling, and humidity exposure standards-making it suitable for engine control units, ADAS sensors, and body electronics.
What is the output voltage swing specification for LM7322MA/NOPB at ±15V supply?
At ±15V supply (VS = 30V), LM7322MA/NOPB delivers rail-to-rail output swing within 120mV of either rail (high) and 150mV (low) at RL = 2kΩ and TA = +25°C. At full temperature range (−40°C to +125°C), worst-case swing is 280mV from V+ and 150mV from V−, ensuring reliable operation in wide-temperature industrial environments.
How does the LM7322MA/NOPB compare to single-channel LM7321 in terms of supply current?
LM7322MA/NOPB draws 1.35mA per channel (2.7mA total), matching the 1.35mA typical supply current of the single-channel LM7321. Both devices scale linearly with temperature-max 2.23mA per channel at +125°C-enabling predictable power budgeting in dual-amplifier configurations without doubling quiescent dissipation.
LM7322MA/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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LM7322MA/NOPB FAQ
1.How can I place an order for LM7322MA/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM7322MA/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 LM7322MA/NOPB reliable?
The price and inventory of LM7322MA/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM7322MA/NOPB is usually 5 days.
3.What payment methods are accepted for LM7322MA/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM7322MA/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM7322MA/NOPB?
LM7322MA/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM7322MA/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 LM7322MA/NOPB?
For technical support, including LM7322MA/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM7322MA/NOPB requirements.
6.How does Aetrix verify that LM7322MA/NOPB is sourced from the original manufacturer or authorized distributors?
All LM7322MA/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 LM7322MA/NOPB meets industry standards.
7.What is the process for return or replacement of LM7322MA/NOPB?
All LM7322MA/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM7322MA/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 LM7322MA/NOPB part is unused and in its original packaging.
Return procedure for LM7322MA/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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