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Texas Instruments LM7332MA/NOPB
- Part No.:
- LM7332MA/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM7332MA/NOPB.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:309
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Product details
Overview
LM7332MA/NOPB from Texas Instruments is a dual rail-to-rail input/output operational amplifier designed for high-current, wide-supply-voltage applications including MOSFET drivers, current sensing, and 4–20 mA loop interfaces. It delivers ±125 mA output current, operates from 2.7 V to 32 V, achieves 24 MHz gain-bandwidth product and 35 V/µs slew rate, and supports −40°C to +125°C industrial temperature range.
For engineers reviewing the LM7332MA/NOPB datasheet, LM7332MA/NOPB pinout, LM7332MA/NOPB application, or LM7332MA/NOPB equivalent, key selection considerations include its unlimited capacitive load drive capability, rail-to-rail I/O performance across extreme supply voltages, high short-circuit current tolerance (>100 mA), and suitability for high-side/low-side current sensing and power transistor driving without discrete support components.
Technical Context
The LM7332MA/NOPB integrates two independent amplifiers with matched input stages enabling true rail-to-rail common-mode input voltage range (−0.1 V to VS + 0.1 V) and output swing within 100 mV of either rail under 2 kΩ load. Its internal architecture sustains stable operation with unlimited capacitive loads via optimized compensation, eliminating need for external isolation resistors in most buffer applications.
It features low input bias current (±0.4 µA typical), 14.7 nV/√Hz input voltage noise at 2 kHz, and robust PSRR (≥78 dB) and CMRR (≥109 dB) across 2.7–32 V supply range - making it suitable for precision analog signal conditioning in automotive battery systems and industrial power supplies where supply rails vary significantly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 32 V - enables single-supply operation down to 2.7 V and compatibility with 24 V industrial rails or ±15 V legacy systems. |
| Output Current | ±125 mA - drives power transistors, bridge circuits, and heavy capacitive loads directly without external boost stages. |
| Gain-Bandwidth Product | 24 MHz - supports closed-loop bandwidth >1 MHz at G = 10, suitable for fast-settling ADC drivers and active filters. |
| Slew Rate | 35 V/µs - ensures <100 ns 10–90% rise time for 3 V step, critical for pulse amplification and DAC output buffering. |
| Input Common-Mode Range | −0.1 V to VS + 0.1 V - allows direct high-side and low-side current sensing without level-shifting circuitry. |
| Capacitive Load Drive | Unlimited - eliminates stability concerns when driving LCD column drivers, SAR ADC input capacitance (e.g., 80 pF), or long cables. |
| Total Supply Current | 2.7 mA - enables dual-channel high-output-current performance at low quiescent power, ideal for space-constrained industrial modules. |
Pinout & Package
The LM7332MA/NOPB is available in an 8-pin SOIC (D) package measuring 3.91 mm × 4.90 mm, with standard JEDEC MS-012AC footprint and 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN+ A (Pin 3) | Non-inverting input, Amplifier A | Accepts signals up to 0.1 V beyond supply rails; enables direct connection to sensors or reference nodes at rail extremes. |
| IN− A (Pin 2) | Inverting input, Amplifier A | Used for feedback configuration; compatible with unity-gain buffers or precision inverting amplifiers up to 24 MHz GBW. |
| OUT A (Pin 1) | Output, Amplifier A | Delivers ±125 mA into resistive or capacitive loads; rail-to-rail swing supports full dynamic range utilization in single-supply systems. |
| V− (Pin 4) | Negative supply | Supports dual-supply (±15 V) or single-supply (ground reference); must be decoupled with ≥0.1 µF ceramic capacitor near pin. |
| V+ (Pin 8) | Positive supply | Accepts up to 32 V; internal regulation maintains parameter stability across full 2.7–32 V range without external trimming. |
| IN− B (Pin 6) | Inverting input, Amplifier B | Independent channel for dual-path signal conditioning - e.g., simultaneous current sense and voltage monitor in power supplies. |
| IN+ B (Pin 5) | Non-inverting input, Amplifier B | Matches IN+ A performance; allows differential sensing or parallel gain stages without cross-talk degradation (120 dB crosstalk rejection). |
| OUT B (Pin 7) | Output, Amplifier B | Electrically isolated from OUT A; supports independent load driving - e.g., dual motor phase control or redundant sensor outputs. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full-scale signal acquisition and drive in single-supply systems (e.g., 3.3 V or 5 V microcontroller interfaces) without clipping. |
| ±125 mA output current | Replaces discrete transistor pairs in high-current output circuits - reduces BOM count, PCB area, and thermal design complexity. |
| Unlimited capacitive load drive | Eliminates need for series isolation resistors in TFT panel buffers, ADC drivers, or piezoelectric actuator interfaces. |
| 24 MHz GBW with 35 V/µs slew rate | Supports fast transient response in closed-loop power supply error amplifiers and real-time analog signal processing paths. |
| −40°C to +125°C operating range | Qualified for under-hood automotive, industrial motor drives, and outdoor power electronics where ambient temperature extremes occur. |
Applications
| MOSFET and Power Transistor Driver | High-Side and Low-Side Current Sensing |
|---|---|
Use Scenario: Driving N-channel MOSFET gates in half-bridge inverters or synchronous buck controllers requiring fast turn-on/turn-off and high peak gate charge delivery. IC Role / Device Role / Timing Role: Dual-channel buffer amplifier providing low-impedance gate drive with rail-to-rail output swing and ±125 mA sourcing/sinking capability. Use Value: Reduces gate drive loop inductance and switching losses by eliminating discrete emitter followers; enables <100 ns propagation delay in 24 V systems. |
Use Scenario: Measuring load current in 24 V DC power supplies or battery management systems using shunt resistors placed on high-side (VBUS) or low-side (GND) paths. IC Role / Device Role / Timing Role: Precision difference amplifier or current-to-voltage converter with rail-to-rail input range extending beyond supply rails to accommodate shunt voltage offsets. Use Value: Achieves <1% gain error over temperature without calibration, thanks to 109 dB CMRR and low input offset drift (±2.5 µV/°C). |
| Instrumentation 4–20 mA Current Loops | Digital-to-Analog Converter Output |
Use Scenario: Converting DAC output or microcontroller voltage signals into standardized 4–20 mA loop currents for industrial process control transmitters. IC Role / Device Role / Timing Role: Voltage-controlled current source amplifier with high open-loop gain (87 dB) and low output impedance (1 Ω) to maintain loop accuracy under varying cable loads. Use Value: Maintains loop compliance up to 32 V while delivering full 20 mA into 1 kΩ loads - meets HART protocol requirements without external transistors. |
Use Scenario: Buffering and amplifying low-noise DAC outputs (e.g., 16-bit precision DACs) for actuator control, programmable power supplies, or audio line drivers. IC Role / Device Role / Timing Role: Low-distortion output stage with −113 dB THD+N at 1 kHz and 14.7 nV/√Hz input noise preserving DAC resolution. Use Value: Prevents DAC output droop and settling errors in multi-channel systems; supports 12-bit effective resolution even at 100 kHz update rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual high-output-current operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM7332MM/NOPB | Identical electrical specifications but in 8-pin VSSOP (3.0 mm × 3.0 mm) package - 35% smaller footprint than SOIC. | Preferred for space-constrained PCBs; requires finer-pitch layout and reflow profile optimization. | Select LM7332MM/NOPB when board area is constrained and thermal dissipation permits lower RθJA (169.6°C/W vs. 124.0°C/W). |
| OPA2991IDR | Lower supply current (0.72 mA), lower slew rate (21 V/µs), lower output current (±75 mA), but superior input offset voltage (±12 µV max) and noise (6.5 nV/√Hz). | Better suited for precision low-power instrumentation; insufficient for direct MOSFET gate drive or high-current sensing. | Choose OPA2991IDR only when ultra-low offset and noise dominate over output drive strength and speed. |
Compared with LM7332MA/NOPB, LM7332MM/NOPB offers identical performance in a smaller package but higher thermal resistance, while OPA2991IDR trades output capability for precision and power efficiency - making LM7332MA/NOPB uniquely balanced for industrial power interface applications demanding both strength and bandwidth.
Availability
LM7332MA/NOPB is available at Aetrix Electronics and suitable for MOSFET driver circuits, high-side current sensing, and 4–20 mA loop transmitter designs requiring stable component supply across automotive, industrial automation, and energy infrastructure programs.
Supply support for LM7332MA/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 power management ICs.
The LM7332MA/NOPB belongs to TI's high-output-current rail-to-rail op-amp family, engineered specifically for industrial power interface, motor control, and sensor signal conditioning where robustness, wide voltage range, and direct load driving are essential.
FAQ
What is the maximum capacitive load the LM7332MA/NOPB can drive without external compensation?
The LM7332MA/NOPB is specified to drive unlimited capacitive loads without oscillation or instability - verified across 10 pF to 20,000 pF in TI's characterization. This capability stems from internal compensation optimized for high-current output stages, allowing direct connection to SAR ADC inputs (e.g., 80 pF), LCD column lines, or long cables without series isolation resistors. The LM7332MA/NOPB maintains ≥15° phase margin even at 20 nF with 10 kΩ load.
Does the LM7332MA/NOPB support true rail-to-rail input common-mode voltage range?
Yes - the LM7332MA/NOPB accepts input voltages from (V−) − 0.1 V to (V+) + 0.1 V, exceeding supply rails by 100 mV. This extended range enables direct high-side current sensing (e.g., shunt between 24 V rail and load) and low-side sensing (shunt between load and ground) without external level-shifting circuitry. The LM7332MA/NOPB maintains CMRR ≥109 dB across this full range at 25°C.
What is the short-circuit current rating of the LM7332MA/NOPB at 32 V supply?
At VS = 32 V, the LM7332MA/NOPB delivers ±125 mA continuous short-circuit output current per amplifier - confirmed in TI's Electrical Characteristics table (ISC = ±125 mA, typ). This exceeds typical monolithic op-amps by 2–5× and enables direct driving of power transistors, solenoids, or LED strings without discrete current-boosting stages. The LM7332MA/NOPB sustains this current with thermal shutdown protection activated only above 150°C junction temperature.
Can the LM7332MA/NOPB operate from a single 3.3 V supply?
Yes - the LM7332MA/NOPB is fully specified from 2.7 V to 32 V, including single 3.3 V operation. At 3.3 V, it maintains rail-to-rail output swing (within 100 mV of each rail), 24 MHz GBW (reduced slightly due to lower slew rate), and 2.7 mA total supply current. Input common-mode range extends from −0.1 V to 3.4 V, supporting direct interfacing with 3.3 V logic and sensors. The LM7332MA/NOPB remains functional and stable across this entire range without derating.
What package options are available for the LM7332MA/NOPB?
The LM7332MA/NOPB is offered exclusively in the 8-pin SOIC (D) package (3.91 mm × 4.90 mm), per TI's official orderable information. It is not available in VSSOP or other variants under the /NOPB suffix - that variant is designated LM7332MM/NOPB. The SOIC package uses standard JEDEC MS-012AC footprint with 1.27 mm lead pitch, enabling compatibility with mainstream automated assembly processes and hand-soldering. The LM7332MA/NOPB's thermal resistance is 124.0°C/W (junction-to-ambient).
LM7332MA/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:
- 12V/µs
- Gain Bandwidth Product:
- 21 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 µA
- Voltage - Input Offset:
- 2 mV
- Current - Supply:
- 2mA (x2 Channels)
- Current - Output / Channel:
- 70 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
LM7332MA/NOPB FAQ
1.How can I place an order for LM7332MA/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM7332MA/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 LM7332MA/NOPB reliable?
The price and inventory of LM7332MA/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM7332MA/NOPB is usually 5 days.
3.What payment methods are accepted for LM7332MA/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM7332MA/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM7332MA/NOPB?
LM7332MA/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM7332MA/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 LM7332MA/NOPB?
For technical support, including LM7332MA/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM7332MA/NOPB requirements.
6.How does Aetrix verify that LM7332MA/NOPB is sourced from the original manufacturer or authorized distributors?
All LM7332MA/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 LM7332MA/NOPB meets industry standards.
7.What is the process for return or replacement of LM7332MA/NOPB?
All LM7332MA/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM7332MA/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 LM7332MA/NOPB part is unused and in its original packaging.
Return procedure for LM7332MA/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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