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Texas Instruments LMP7712MMX/NOPB
- Part No.:
- LMP7712MMX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LMP7712MMX/NOPB.pdf
- Description:
- IC CMOS 2 CIRCUIT 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,925
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Product details
Overview
LMP7712MMX/NOPB from Texas Instruments is a dual-channel, precision CMOS-input operational amplifier with rail-to-rail output swing, 17 MHz gain bandwidth product, ±150 μV max input offset voltage, and 5.8 nV/√Hz input voltage noise density at 1 kHz - deployed in sensor interface and transimpedance amplifier circuits operating from 1.8 V to 5.5 V supply.
For engineers reviewing the LMP7712MMX/NOPB datasheet, LMP7712MMX/NOPB pinout, LMP7712MMX/NOPB application, or LMP7712MMX/NOPB equivalent, key selection criteria include low-noise performance at 1–10 kHz, enable-pin-controlled shutdown (140 nA per channel), CMOS input bias current ≤100 fA, and operation across −40°C to +125°C industrial temperature range.
Technical Context
The LMP7712MMX/NOPB uses TI's VIP50 CMOS process to achieve ultra-low input bias current (≤100 fA) and low input-referred voltage noise (5.8 nV/√Hz), enabling high-precision DC-coupled amplification of weak signals from high-impedance sources like photodiodes and strain gauges. Its rail-to-rail output stage delivers ≥70 mV headroom from either supply rail under 2 kΩ load.
Each channel integrates an independent enable pin (EN A/EN B) supporting low-power shutdown mode (≤1 μA per channel), while maintaining full rail-to-rail common-mode input range (−0.3 V to VS − 0.3 V) and >85 dB PSRR/CMRR up to 100 kHz - critical for single-supply instrumentation in noisy environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 17 MHz - supports stable closed-loop gain ≥10 at 1.7 MHz, suitable for anti-aliasing filters and active sensor conditioning. |
| Input Offset Voltage (max) | ±150 μV - ensures ≤150 μV DC error in 10 V full-scale systems without trimming. |
| Input Voltage Noise Density | 5.8 nV/√Hz @ 1 kHz - enables detection of sub-μV signals in 1–10 kHz bandwidths without dominant noise contribution. |
| Supply Current (per channel) | 1.30 mA (active), 0.14 μA (shutdown) - allows battery-powered operation with <1.5 μA total quiescent draw in dual-channel standby. |
| Common-Mode Input Range | −0.3 V to VS − 0.3 V - supports direct interfacing to ground-referenced sensors in single-supply 2.5 V or 3.3 V systems. |
| Output Swing (RL = 2 kΩ) | Within 32 mV of VS, within 50 mV of VSS - maximizes dynamic range in low-voltage data acquisition with 12-bit+ resolution. |
| Operating Temperature | −40°C to +125°C - qualified for automotive cabin, industrial PLC I/O, and outdoor sensor node deployments. |
Pinout & Package
Package: 10-pin VSSOP (Package Code DGS), 3.0 mm × 3.0 mm footprint, 0.5 mm pitch, exposed thermal pad (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT A) | Channel A output | Rail-to-rail voltage source capable of sourcing 46 mA / sinking 23 mA at VS = 5 V. |
| 2 (−IN A) | Channel A inverting input | High-impedance CMOS node; input capacitance ≈ 2.5 pF (common-mode); requires guard trace in high-Z layouts. |
| 3 (+IN A) | Channel A non-inverting input | Matched to −IN A for optimal CMRR; common-mode range extends 300 mV below VSS. |
| 4 (V−) | Negative supply rail | Ground reference for single-supply operation; must be decoupled with 100 nF ceramic capacitor near pin. |
| 5 (V+) | Positive supply rail | Accepts 1.8 V to 5.5 V; PSRR >85 dB ensures immunity to digital supply ripple. |
| 6 (OUT B) | Channel B output | Independent output; crosstalk rejection >120 dB at 100 kHz prevents inter-channel interference. |
| 7 (−IN B) | Channel B inverting input | Electrically isolated from Channel A inputs; no shared substrate coupling path. |
| 8 (+IN B) | Channel B non-inverting input | Matched to −IN B; same input bias current spec as Channel A (≤100 fA). |
| 9 (EN B) | Channel B enable control | Active-high logic: ≥4.6 V enables, ≤0.4 V disables; controls only Channel B power state. |
| 10 (EN A) | Channel A enable control | Active-high logic: ≥4.6 V enables, ≤0.4 V disables; independent of EN B for asymmetric power management. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent enable pins | Per-channel shutdown reduces system-level quiescent current by >99.9% without affecting adjacent channel operation. |
| Rail-to-rail output swing | Delivers ≥98% of full-scale voltage range at 2 kΩ load, preserving ADC effective resolution in 3.3 V systems. |
| Ultra-low input bias current | ≤100 fA maximum enables use with >1 GΩ source impedances (e.g., pH electrodes, piezoresistive sensors) without signal loss. |
| Low THD+N | 0.001% @ 1 kHz, 4 VPP, RL = 100 kΩ - preserves harmonic integrity in audio-grade and precision waveform generation. |
| Wide supply range | 1.8 V to 5.5 V operation supports direct integration into Li-ion (3.0–4.2 V), coin-cell (1.8–3.0 V), and USB-powered (5.0 V) designs. |
Applications
| Photodiode Transimpedance Amplifier | High-Impedance Sensor Signal Conditioning |
|---|---|
Use Scenario: Converting nanoampere photocurrent from a reverse-biased silicon photodiode into a measurable voltage signal for optical smoke detection. IC Role / Device Role / Timing Role: Dual-channel LMP7712MMX/NOPB operates as transimpedance amplifier (Channel A) and reference buffer (Channel B) in a ratiometric measurement architecture. Use Value: 5.8 nV/√Hz input noise and ≤100 fA input bias current minimize Johnson-Nyquist and shot noise contributions, enabling reliable detection of <100 nA photocurrents. |
Use Scenario: Amplifying mV-level output from a 10 kΩ platinum RTD in a portable environmental monitor powered by a 3.3 V LiPo battery. IC Role / Device Role / Timing Role: Configured as precision non-inverting amplifier (Channel A) with matched feedback network; Channel B buffers reference voltage for ADC. Use Value: ±150 μV max VOS and −40°C to +125°C operation ensure <0.1°C absolute accuracy over full temperature range without calibration. |
| Low-Voltage Active Filter | Portable Medical ECG Front-End |
Use Scenario: Implementing a 2nd-order Sallen-Key low-pass filter (cutoff = 100 Hz) in a battery-operated vibration analyzer using 2.5 V supply. IC Role / Device Role / Timing Role: Dual op-amp topology realizes filter transfer function with one LMP7712MMX/NOPB replacing two discrete amplifiers. Use Value: 17 MHz GBW provides >100× unity-gain bandwidth margin, ensuring filter response matches theoretical design within 0.1 dB up to 100 Hz. |
Use Scenario: Biopotential amplification stage in a handheld ECG device acquiring lead-II signals with 0.05–150 Hz bandwidth and 50/60 Hz notch filtering. IC Role / Device Role / Timing Role: Channel A used in high-gain instrumentation amplifier configuration; Channel B implements active notch filter. Use Value: CMRR >85 dB and PSRR >85 dB suppress common-mode interference from AC mains and switching regulators, reducing post-processing burden. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2189IDR | Lower input offset drift (±0.003 μV/°C vs. ±4 μV/°C), higher supply current (1.35 mA/channel), no enable pin. | Preferred for ultra-stable DC measurements over wide temperature swings; unsuitable where dynamic power gating is required. | Select OPA2189IDR when long-term VOS stability dominates over shutdown capability and supply current. |
| ADA4625-2ARMZ | Higher GBW (34 MHz), higher input noise (7.2 nV/√Hz), wider supply range (4.5–36 V), no enable pin. | Better suited for high-speed precision applications (e.g., 10-bit+ SAR ADC drivers) but consumes >2× supply current and lacks low-voltage operation. | Select ADA4625-2ARMZ when bandwidth >20 MHz is mandatory and 1.8–5.5 V supply compatibility is not required. |
Compared with OPA2189IDR and ADA4625-2ARMZ, the LMP7712MMX/NOPB uniquely combines enable-controlled ultra-low power (0.14 μA/channel shutdown), 1.8 V minimum supply, and 5.8 nV/√Hz noise - making it optimal for always-on, battery-constrained sensor nodes requiring precision and longevity.
Availability
LMP7712MMX/NOPB is available at Aetrix Electronics and suitable for photodiode transimpedance amplifiers, high-impedance RTD signal chains, and portable medical ECG front-ends requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for LMP7712MMX/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 innovation in precision amplifiers and signal chain solutions.
The LMP7712MMX/NOPB belongs to TI's LMP™ precision amplifier family, engineered specifically for low-noise, low-offset, rail-to-rail performance in sensor interface, instrumentation, and portable measurement applications.
FAQ
What is the maximum capacitive load the LMP7712MMX/NOPB can drive without oscillation?
The LMP7712MMX/NOPB can directly drive capacitive loads up to 120 pF in unity-gain follower configuration without instability. For heavier loads, an isolation resistor (RISO) must be placed between the output and capacitive load to maintain ≥45° phase margin. Performance curves in Figure 37 of the datasheet confirm stable operation up to 120 pF at 5 V supply with 10 kΩ load.
Does the LMP7712MMX/NOPB support true rail-to-rail input operation?
No - the LMP7712MMX/NOPB features rail-to-rail *output* swing but has a limited common-mode input range extending only to −0.3 V and VS − 0.3 V. It does not accept inputs at the positive or negative supply rails. This is confirmed in the "Common Mode Voltage Range" specification (CMVR = −0.3 V to 4.0 V at VS = 5 V) in the 5V Electrical Characteristics table.
Can both channels of the LMP7712MMX/NOPB be independently enabled or disabled?
Yes - the LMP7712MMX/NOPB provides two dedicated enable pins: EN A (Pin 10) controls Channel A, and EN B (Pin 9) controls Channel B. Each pin operates independently: applying ≤0.4 V disables its respective channel (reducing supply current to ≤1 μA), while ≥4.6 V enables normal operation. This is explicitly defined in the "Enable Pin Voltage Range" parameter on page 5 of the datasheet.
What is the typical input bias current of the LMP7712MMX/NOPB at 125°C?
The typical input bias current of the LMP7712MMX/NOPB at 125°C is 1 pA, with a maximum limit of 100 pA across −40°C to +125°C. This value is specified in the "Input Bias Current" row of the 5V Electrical Characteristics table (page 4), under conditions of −40°C ≤ TA ≤ 125°C and VCM = 2.0 V.
Is the LMP7712MMX/NOPB suitable for driving 600 Ω audio loads?
Yes - the LMP7712MMX/NOPB can source up to 46 mA and sink up to 23 mA at VS = 5 V, enabling direct drive of 600 Ω loads with ≤0.5 V output swing limitation. THD+N remains at 0.004% under these conditions (page 5, THD+N specification), confirming suitability for line-level audio buffering where low distortion and moderate drive strength are required.
LMP7712MMX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMP®
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- CMOS
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 11.5V/µs
- Gain Bandwidth Product:
- 17 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.1 pA
- Voltage - Input Offset:
- 10 µV
- Current - Supply:
- 1.3mA (x2 Channels)
- Current - Output / Channel:
- 66 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:
- 10-VSSOP
LMP7712MMX/NOPB FAQ
1.How can I place an order for LMP7712MMX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP7712MMX/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 LMP7712MMX/NOPB reliable?
The price and inventory of LMP7712MMX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP7712MMX/NOPB is usually 5 days.
3.What payment methods are accepted for LMP7712MMX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP7712MMX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP7712MMX/NOPB?
LMP7712MMX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP7712MMX/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 LMP7712MMX/NOPB?
For technical support, including LMP7712MMX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP7712MMX/NOPB requirements.
6.How does Aetrix verify that LMP7712MMX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMP7712MMX/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 LMP7712MMX/NOPB meets industry standards.
7.What is the process for return or replacement of LMP7712MMX/NOPB?
All LMP7712MMX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMP7712MMX/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 LMP7712MMX/NOPB part is unused and in its original packaging.
Return procedure for LMP7712MMX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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