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Texas Instruments LMP7702MM
- Part No.:
- LMP7702MM
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LMP7702MM.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,952
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Product details
Overview
LMP7702MM from Texas Instruments is a dual-channel, precision CMOS-input, rail-to-rail input and output operational amplifier optimized for high-impedance sensor interface and battery-powered instrumentation. It delivers ±220 µV maximum input offset voltage, ±200 fA input bias current, 2.5 MHz unity-gain bandwidth, and operates from 2.7 V to 12 V supply rails - enabling accurate signal conditioning in low-voltage, low-power systems such as portable medical sensors and precision data acquisition front-ends.
For engineers reviewing the LMP7702MM datasheet, LMP7702MM pinout, LMP7702MM application, or LMP7702MM equivalent, key selection criteria include its rail-to-rail I/O swing (within 40 mV of rails), ultra-low input bias current for photodiode/bridge sensor buffering, wide common-mode range (–0.2 V to VS + 0.2 V), and guaranteed performance across –40°C to +125°C industrial temperature range.
Technical Context
The LMP7702MM uses VIP50 CMOS process technology to integrate complementary NMOS/PMOS input pairs with laser-trimmed offset compensation, achieving stable rail-to-rail input operation without CMRR glitches. Its input stage supports common-mode voltages extending 200 mV beyond either supply rail under 3–5 V operation.
Internally, it features two independent amplifiers sharing no inter-stage coupling; each provides 130 dB open-loop gain, 130 dB CMRR, and 9 nV/√Hz input voltage noise at 1 kHz - making it suitable for DC-coupled, high-gain transducer signal chains where offset drift and noise floor are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | ±220 µV max - ensures ≤0.22 mV error in 1 V full-scale 12-bit systems without trimming |
| Input Bias Current | ±200 fA typical - enables use with >1 GΩ source impedances (e.g., pH electrodes, piezoresistive sensors) |
| Supply Voltage Range | 2.7 V to 12 V - supports single-supply 3.3 V microcontroller interfaces and dual-supply ±5 V analog backplanes |
| Unity-Gain Bandwidth | 2.5 MHz - sufficient for anti-aliasing filters up to ~200 kHz and DAC buffer settling in <500 ns |
| Output Swing (RL = 2 kΩ) | Within 40–120 mV of rails - preserves >95% dynamic range in 3.3 V systems, critical for low-voltage ADC drivers |
| CMRR | 130 dB min - rejects >3.2 mV of common-mode interference in 1 V differential signals |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive, industrial PLC, and outdoor IoT node deployment |
Pinout & Package
Package: VSSOP-8 (DGK), body size 3.00 mm × 3.00 mm, 0.65 mm pitch, thermally enhanced exposed pad (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives loads down to 2 kΩ while maintaining rail-to-rail swing |
| 2 | IN A– | Inverting input for Amplifier A - matched to IN A+ for <1 µV input offset contribution |
| 3 | IN A+ | Noninverting input for Amplifier A - accepts common-mode voltages from –0.2 V to VS + 0.2 V |
| 4 | V– | Negative supply terminal - referenced to system ground in single-supply configurations |
| 5 | IN B+ | Noninverting input for Amplifier B - independently configurable; no crosstalk with Amplifier A |
| 6 | IN B– | Inverting input for Amplifier B - supports differential gain configurations with matched layout |
| 7 | OUT B | Amplifier B output - fully independent output stage; capable of sourcing/sinking ±40 mA |
| 8 | V+ | Positive supply terminal - supplies both amplifiers; decoupling capacitor required within 1 cm |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables direct interfacing with 3.3 V ADCs and DACs without level-shifting circuitry |
| Ultra-low input bias current (±200 fA) | Minimizes voltage error across high-impedance sources like photodiodes and strain gauges |
| Low input offset voltage drift (±1 µV/°C) | Reduces calibration frequency in temperature-varying environments (e.g., environmental monitors) |
| Wide supply range (2.7 V to 12 V) | Supports flexible power architecture: single-cell Li-ion, USB-powered, or split-rail lab equipment |
| 130 dB CMRR and PSRR | Ensures stable gain accuracy in noisy industrial settings with shared power/ground planes |
Applications
| High-Impedance Sensor Interface | Battery-Powered Instrumentation |
|---|---|
Use Scenario: Amplifying output of a 10 GΩ pH electrode in a handheld water quality tester. IC Role / Device Role / Timing Role: Precision DC-coupled buffer and gain stage, rejecting common-mode noise from floating electrode. Use Value: ±200 fA input bias current prevents electrode polarization; rail-to-rail output maximizes 3.3 V ADC utilization. |
Use Scenario: Signal conditioning for thermistor-based temperature logging in a solar-charged remote sensor node. IC Role / Device Role / Timing Role: Low-power, high-accuracy front-end amplifier driving SAR ADC during periodic wake-up cycles. Use Value: 1.5 mA total supply current per channel extends battery life; –40°C to +125°C rating ensures field reliability. |
| DAC Output Buffer | Active Filter Stage |
Use Scenario: Driving a 12-bit DAC output into a 10 kΩ load in a programmable current source for LED dimming control. IC Role / Device Role / Timing Role: Unity-gain buffer isolating DAC from load variations and maintaining monotonicity. Use Value: ±220 µV offset contributes <0.05% FSR error; 2.5 MHz GBW ensures <100 ns settling to 0.1%. |
Use Scenario: Second-order Sallen-Key low-pass filter (10 kHz cutoff) in ECG front-end for noise suppression. IC Role / Device Role / Timing Role: Active integrator and gain element with low noise density (9 nV/√Hz) preserving SNR. Use Value: 130 dB open-loop gain ensures filter Q and fc stability; rail-to-rail output avoids clipping on peak R-wave signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2189IDGKT | Lower offset (±5 µV), higher supply current (1.3 mA/channel), same VSSOP-8 package | Better DC accuracy but higher power; less suitable for battery-constrained designs | Select when sub-10 µV offset dominates over quiescent current budget |
| ADA4522-2ARMZ | Zero-drift architecture, 12 nV/√Hz noise, 5.5 V max supply, MSOP-8 package | Superior long-term drift stability but limited to ≤5.5 V operation and higher cost | Select for metrology-grade zero-drift performance where supply voltage permits |
Compared with LMP7702MM, OPA2189IDGKT trades ultra-low bias current for lower offset, while ADA4522-2ARMZ adds chopper stabilization at the expense of bandwidth and supply range - making LMP7702MM optimal for wide-supply, high-impedance, moderate-accuracy applications.
Availability
LMP7702MM is available at Aetrix Electronics and suitable for high-impedance sensor interface, battery-powered instrumentation, and precision DAC buffering requiring stable component supply across industrial temperature grades and long production lifecycles.
Supply support for LMP7702MM 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 precision signal chain solutions.
The LMP7702MM belongs to TI's LMP™ precision amplifier family, engineered specifically for applications demanding ultra-low input bias current, rail-to-rail operation, and robust performance across extended temperature and supply ranges - especially in sensor signal conditioning and portable instrumentation.
FAQ
What is the maximum operating supply voltage for the LMP7702MM?
The LMP7702MM supports a supply voltage range of 2.7 V to 12 V. Absolute maximum ratings specify 13.2 V between V+ and V− terminals. Operation above 12 V is not recommended, as electrical characteristics are only guaranteed within the 2.7–12 V range per the datasheet. Exceeding this may impact long-term reliability and parametric performance of the LMP7702MM.
Does the LMP7702MM have rail-to-rail input capability across the full temperature range?
Yes, the LMP7702MM maintains rail-to-rail input operation from –40°C to +125°C. Its common-mode voltage range extends to –0.2 V below V– and up to V+ + 0.2 V, verified across all tested temperatures and supply conditions (3 V, 5 V, ±5 V). This behavior is enabled by the trimmed complementary CMOS input stage and is explicitly characterized in the LMP7702MM datasheet.
What is the typical input bias current of the LMP7702MM, and how does it vary with temperature?
The LMP7702MM exhibits a typical input bias current of ±200 fA at 25°C, with a maximum of ±1 pA over the full –40°C to +125°C range. The datasheet confirms that IB remains below ±400 fA at 125°C under 5 V supply, making it exceptionally stable for high-impedance applications. This performance is intrinsic to the VIP50 CMOS process used in the LMP7702MM.
Can the LMP7702MM drive a 2 kΩ load while maintaining rail-to-rail output swing?
Yes - the LMP7702MM guarantees output voltage swing within 40–120 mV of either rail when driving a 2 kΩ load, depending on supply voltage and temperature. At 5 V supply and 25°C, typical swing is within 60 mV of each rail. This specification is validated across the full operating range and is a defined parameter in the LMP7702MM electrical characteristics tables.
Is the LMP7702MM pin-compatible with other devices in the LMP770x family?
No - the LMP7702MM (VSSOP-8) shares pinout with the LMP7702 in SOIC-8 (D package) but differs from LMP7701 (SOT-23-5, SOIC-8) and LMP7704 (SOIC-14, TSSOP-14). Pin functions for Amplifier A/B are identical across LMP7702 variants, but LMP7702MM is not pin-compatible with single or quad versions. Always verify pin mapping using the LMP7702MM-specific functional diagram.
LMP7702MM 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:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1.1V/µs
- Gain Bandwidth Product:
- 2.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.2 pA
- Voltage - Input Offset:
- 37 µV
- Current - Supply:
- 1.5mA (x2 Channels)
- Current - Output / Channel:
- 86 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
LMP7702MM FAQ
1.How can I place an order for LMP7702MM through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP7702MM 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 LMP7702MM reliable?
The price and inventory of LMP7702MM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP7702MM is usually 5 days.
3.What payment methods are accepted for LMP7702MM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP7702MM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP7702MM?
LMP7702MM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP7702MM 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 LMP7702MM?
For technical support, including LMP7702MM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP7702MM requirements.
6.How does Aetrix verify that LMP7702MM is sourced from the original manufacturer or authorized distributors?
All LMP7702MM 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 LMP7702MM meets industry standards.
7.What is the process for return or replacement of LMP7702MM?
All LMP7702MM units undergo pre-shipment inspection (PSI). If there is an issue with LMP7702MM, 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 LMP7702MM part is unused and in its original packaging.
Return procedure for LMP7702MM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMP7702MM Tags
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