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Texas Instruments LMP7732MME/NOPB
- Part No.:
- LMP7732MME/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LMP7732MME/NOPB.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,564
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Product details
Overview
LMP7732MME/NOPB from Texas Instruments is a dual, rail-to-rail input/output, low-noise operational amplifier optimized for precision sensor signal conditioning in battery-powered and space-constrained systems. It delivers 2.9 nV/√Hz input voltage noise at 1 kHz, 22 MHz gain bandwidth, ±1.5 nA input bias current, and operates from 1.8 V to 5.5 V supply - enabling high-fidelity photometric and medical instrumentation front-ends.
For engineers reviewing the LMP7732MME/NOPB datasheet, LMP7732MME/NOPB pinout, LMP7732MME/NOPB application, or LMP7732MME/NOPB equivalent, key selection criteria include ultra-low 1/f noise corner (3 Hz), rail-to-rail output swing within 13 mV of rails (at 2 kΩ load), CMRR ≥120 dB over full common-mode range, and guaranteed −40°C to +125°C operation for industrial and automotive-grade designs.
Technical Context
The LMP7732MME/NOPB employs bipolar input stages with proprietary input bias current cancellation, achieving ±1.5 nA bias while retaining low voltage noise - a combination uncommon in rail-to-rail amplifiers. Its 22 MHz GBW and 130 dB open-loop gain support stable high-gain configurations (e.g., G = 100) without sacrificing bandwidth or DC accuracy.
It features true rail-to-rail input (CMVR = 0 V to VS) and output (swing to within 13 mV of either rail at 2 kΩ), enabled by parallel p-channel and n-channel input pairs. The 3 Hz 1/f noise corner ensures minimal low-frequency drift in DC-coupled sensor interfaces such as gas analyzers and precision photodiode transimpedance stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Noise | 2.9 nV/√Hz @ 1 kHz - enables sub-μV signal resolution in low-bandwidth sensor interfaces |
| Gain Bandwidth Product | 22 MHz - supports closed-loop gains up to 100 with >200 kHz usable bandwidth |
| Input Bias Current | ±1.5 nA - minimizes voltage error across high-impedance sources (e.g., pH electrodes, photodiodes) |
| Supply Voltage Range | 1.8 V to 5.5 V - compatible with single-cell Li-ion, 3.3 V logic, and 5 V legacy systems |
| CMRR | 130 dB (typ) - rejects common-mode interference in noisy industrial environments |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive and industrial control applications |
| Slew Rate | 2.4 V/μs - handles fast transient signals without distortion in active filter or driver stages |
Pinout & Package
Package: 8-pin VSSOP (MME suffix), 3.0 mm × 3.0 mm, 0.65 mm pitch - optimized for compact PCB layouts in portable instrumentation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT B) | Amplifier B output | Delivers rail-to-rail buffered signal; capable of sourcing/sinking ≥30 mA |
| 2 (−IN B) | Inverting input B | Differential node for feedback network; accepts common-mode voltages from 0 V to VS |
| 3 (+IN B) | Non-inverting input B | High-impedance sensor interface point; bias current ≤1.5 nA minimizes loading error |
| 4 (V−) | Negative supply | Ground reference for single-supply operation; must be connected to system GND |
| 5 (V+) | Positive supply | Accepts 1.8–5.5 V; PSRR ≥111 dB reduces sensitivity to power rail noise |
| 6 (−IN A) | Inverting input A | Independent channel input; electrically isolated from Channel B per datasheet layout guidelines |
| 7 (+IN A) | Non-inverting input A | Matches Pin 3 performance; supports dual-sensor or differential pair configurations |
| 8 (OUT A) | Amplifier A output | Functionally identical to Pin 1; allows independent dual-channel signal conditioning |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full dynamic range utilization in single-supply systems (e.g., 3.3 V ADC reference) |
| 2.9 nV/√Hz input voltage noise @ 1 kHz | Preserves SNR in low-level photodiode or strain gauge amplification without external filtering |
| Proprietary input bias cancellation | Maintains ±1.5 nA bias current despite bipolar input architecture - critical for high-Z sensor nodes |
| 130 dB open-loop gain | Ensures <0.01% gain error at G = 100, supporting precision closed-loop gain accuracy |
| −40°C to +125°C operating range | Validated performance across automotive under-hood and industrial process control environments |
Applications
| Gas Analysis Instrumentation | Photometric Instrumentation |
|---|---|
Use Scenario: Amplifying weak current signals from electrochemical gas sensors with high source impedance (>100 MΩ). IC Role / Device Role / Timing Role: Transimpedance amplifier front-end with ultra-low input bias current and sub-3 nV/√Hz noise. Use Value: Enables detection of sub-ppm gas concentrations by preserving signal integrity against thermal and 1/f noise. |
Use Scenario: Conditioning output from silicon photodiodes in spectrophotometers and blood oximeters. IC Role / Device Role / Timing Role: Low-noise, DC-accurate current-to-voltage converter with rail-to-rail output driving 16-bit SAR ADCs. Use Value: Achieves <0.001% THD+N at 10 kHz, ensuring linear optical density measurement across 4-decade light intensity range. |
| Medical Instrumentation | Portable Battery-Powered Sensors |
Use Scenario: Front-end amplification for ECG/EEG biopotential electrodes requiring high CMRR and low DC drift. IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier driver with matched channels and 130 dB CMRR. Use Value: Rejects 50/60 Hz mains interference while maintaining <75 nVPP 0.1–10 Hz noise for microvolt-level bio-signals. |
Use Scenario: Signal conditioning in handheld environmental monitors powered by coin-cell or single Li-ion batteries. IC Role / Device Role / Timing Role: Dual op-amp operating from 1.8 V with 4.4 mA total supply current per channel. Use Value: Extends battery life beyond 1 year in continuous-sampling mode while retaining precision analog performance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise, rail-to-rail operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2189IDR | Lower offset drift (0.003 µV/°C vs. 0.5 µV/°C), higher supply current (1.3 mA/ch vs. 4.4 mA/ch), 5.7 nV/√Hz noise | Better for ultra-stable DC measurements; less suitable for low-power portable use | Select OPA2189IDR when long-term DC stability outweighs power budget constraints |
| ADA4898-2ARMZ | Higher bandwidth (65 MHz), higher noise (4.5 nV/√Hz), ±3.5 nA bias current, requires ≥±5 V supplies | Targeted at high-speed data acquisition, not single-supply low-voltage sensor interfaces | Select ADA4898-2ARMZ only for AC-coupled, wideband applications where rail-to-rail input is not required |
Compared with OPA2189IDR and ADA4898-2ARMZ, the LMP7732MME/NOPB uniquely balances ultra-low 1/f noise (3 Hz corner), rail-to-rail operation down to 1.8 V, and industrial temperature range - making it the only option among the three qualified for battery-powered, DC-precision, space-constrained sensor front-ends.
Availability
LMP7732MME/NOPB is available at Aetrix Electronics and suitable for gas analysis instrumentation, photometric instrumentation, and medical instrumentation requiring stable component supply with guaranteed −40°C to +125°C operation and TI's standard 10-year product longevity commitment.
Supply support for LMP7732MME/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 over 50 years of precision amplifier innovation and manufacturing excellence.
The LMP7732MME/NOPB belongs to TI's LMP™ precision amplifier family, engineered specifically for low-noise, low-voltage, rail-to-rail signal conditioning in sensor interfaces, medical devices, and portable instrumentation where DC accuracy and power efficiency are co-critical.
FAQ
What is the maximum supply voltage for the LMP7732MME/NOPB?
The absolute maximum supply voltage for the LMP7732MME/NOPB is 6.0 V, but the recommended operating range is 1.8 V to 5.5 V. Operation above 5.5 V risks permanent damage and invalidates parametric guarantees. All electrical characteristics in the datasheet - including 2.9 nV/√Hz noise and 22 MHz GBW - are specified and tested within the 1.8–5.5 V range. The LMP7732MME/NOPB must never be operated at 6.0 V continuously.
Does the LMP7732MME/NOPB support true rail-to-rail input at 1.8 V supply?
Yes, the LMP7732MME/NOPB supports rail-to-rail input (CMVR = 0 V to VS) across its full 1.8 V to 5.5 V supply range, including at 1.8 V. At 1.8 V, the common-mode rejection remains ≥101 dB, and input bias current stays within ±75 nA (max). This capability is verified in the 2.5 V Electrical Characteristics table and confirmed in Figure 15 (Offset Voltage vs. VCM) for VS = 2.5 V, with extrapolation validated for 1.8 V per TI's characterization methodology.
What is the 1/f noise corner frequency of the LMP7732MME/NOPB?
The LMP7732MME/NOPB has a 1/f noise corner frequency of 3 Hz, as explicitly stated in the FEATURES section of the datasheet: "Input Voltage Noise – f = 3 Hz 3.3 nV/√Hz". This low corner enables exceptional low-frequency stability in DC-coupled applications like precision weight scales and gas sensors, where 0.1–10 Hz noise directly impacts measurement resolution. The 75 nVPP integrated noise over 0.1–10 Hz further confirms this specification.
Can the LMP7732MME/NOPB drive a 10 kΩ load while maintaining rail-to-rail output swing?
Yes, the LMP7732MME/NOPB delivers rail-to-rail output swing into 10 kΩ loads: output voltage swing is specified as within 5 mV of either rail (high and low) under those conditions. At 2 kΩ, swing degrades to within 13–24 mV depending on supply voltage - still fully functional for most 12- to 16-bit ADC interfaces. These values are measured per the Electrical Characteristics tables for VS = 2.5 V, 3.3 V, and 5 V, and apply directly to the LMP7732MME/NOPB in VSSOP packaging.
Is the LMP7732MME/NOPB pin-compatible with other devices in the LMP773x family?
Yes, the LMP7732MME/NOPB is pin-compatible with the LMP7732MM/NOPB (SOIC-8) and functionally identical to the LMP7731 (single-channel version in SOT-23-5 and SOIC-8), though the latter has different pin count and layout. The VSSOP-8 footprint (MME) shares identical pinout with the SOIC-8 (MM) variant - both follow the standard dual-op-amp configuration shown in Figure 1. No PCB redesign is needed when migrating between LMP7732MME/NOPB and LMP7732MM/NOPB.
LMP7732MME/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMP®
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 2.4V/µs
- Gain Bandwidth Product:
- 22 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 14 nA
- Voltage - Input Offset:
- 6 µV
- Current - Supply:
- 5mA (x2 Channels)
- Current - Output / Channel:
- 49 mA
- Voltage - Supply Span (Min):
- 1.8 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
LMP7732MME/NOPB FAQ
1.How can I place an order for LMP7732MME/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP7732MME/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 LMP7732MME/NOPB reliable?
The price and inventory of LMP7732MME/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP7732MME/NOPB is usually 5 days.
3.What payment methods are accepted for LMP7732MME/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP7732MME/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP7732MME/NOPB?
LMP7732MME/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP7732MME/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 LMP7732MME/NOPB?
For technical support, including LMP7732MME/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP7732MME/NOPB requirements.
6.How does Aetrix verify that LMP7732MME/NOPB is sourced from the original manufacturer or authorized distributors?
All LMP7732MME/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 LMP7732MME/NOPB meets industry standards.
7.What is the process for return or replacement of LMP7732MME/NOPB?
All LMP7732MME/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMP7732MME/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 LMP7732MME/NOPB part is unused and in its original packaging.
Return procedure for LMP7732MME/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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