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Texas Instruments LMP8358MTX/NOPB
- Part No.:
- LMP8358MTX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LMP8358MTX/NOPB.pdf
- Description:
- IC OPAMP PGA 1 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,600
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Product details
Overview
LMP8358MTX/NOPB from Texas Instruments is a zero-drift, programmable-gain instrumentation amplifier with integrated diagnostics and SPI/parallel gain configuration. It delivers 10–1000× gain, <10 µV max input offset voltage, 110 dB min CMRR, and operates from 2.7V to 5.5V supply across −40°C to +125°C - enabling precision bridge sensor amplification in harsh industrial environments.
For engineers reviewing the LMP8358MTX/NOPB datasheet, LMP8358MTX/NOPB pinout, LMP8358MTX/NOPB application, or LMP8358MTX/NOPB equivalent, this page provides verified specifications, fault-detection capability details, rail-to-rail output behavior, EMI rejection at 1.8 GHz (92 dB), and validated alternative options for medical instrumentation and low-side current sensing designs.
Technical Context
The LMP8358MTX/NOPB implements auto-zeroing and chopper-stabilized techniques to eliminate 1/f noise and suppress input offset drift to 50 nV/°C. Its ground-sensing CMOS input stage supports common-mode voltages from 100 mV below V− to 1.4 V below V+, enabling direct interfacing with grounded sensors and supply-referenced bridges.
Diagnostics include open/shorted input detection via programmable test currents (10 nA–100 µA) and real-time connection health monitoring. Gain is configured via SPI (G[2:0] register) or parallel pins (G0–G2), with five COMP modes offering trade-offs between bandwidth (up to 240 MHz GBW) and settling time (as low as 4 µs).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Range | Programmable to 10, 20, 50, 100, 200, 500, or 1000× via SPI or parallel interface; enables single-part flexibility across multiple sensor signal levels. |
| Input Offset Voltage | Max 10 µV at 25°C; ensures sub-μV-level DC accuracy critical for thermopile and strain gauge outputs. |
| CMRR | Min 110 dB over −0.1 V to +1.9 V common-mode range at 3.3 V supply; rejects interference from noisy power rails or motor drives. |
| EMIRR | 92 dB at 1.8 GHz; mitigates cellular/WiFi-induced errors in portable medical or industrial handheld devices. |
| Supply Current | 1.8 mA typical (fault detection off); supports battery-powered instrumentation with >10-year shelf life in shutdown mode (0.006 µA). |
| Operating Temp | −40°C to +125°C; qualified for under-hood automotive, motor control feedback, and industrial PLC analog input modules. |
| Package | 14-pin TSSOP (MTX suffix); 5.0 mm × 4.4 mm footprint with 0.65 mm pitch - compatible with automated SMT assembly and thermal relief design. |
Pinout & Package
14-pin TSSOP package (MTX) with exposed thermal pad; JEDEC MO-153 compliant, θJA = 135°C/W. Pinout optimized for signal integrity: differential inputs (+IN/−IN) isolated from digital control lines (SCK/SDI/SDO), and dedicated REFF/REFS for Kelvin reference routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN | Differential Input Positive | High-impedance CMOS node; accepts signals down to 100 mV below V− - supports ground-referenced bridge configurations. |
| −IN | Differential Input Negative | Matched to +IN; enables true differential measurement with 50 MΩ||1 pF input impedance. |
| REFS | Reference Sense | Feedback path for reference buffer; enables 4-wire VREF routing to reject PCB trace IR drop. |
| REFF | Reference Force | Drives external reference voltage; used with REFS to stabilize VREF against load variations. |
| FB | Output Feedback | Connects to OUT for unity-gain buffer mode or external gain-setting resistor networks. |
| OUT | Analog Output | Rail-to-rail swing (12 mV from rails, RL = 10 kΩ); drives ADC inputs directly without level-shifting. |
| V+ | Positive Supply | Accepts 2.7–5.5 V; PSRR ≥112 dB ensures immunity to digital supply noise coupling. |
| V− | Negative Supply | Ground or negative rail; supports single- or split-supply operation with extended common-mode range. |
| SCK/G2 | SPI Clock / Gain MSB | Serial mode: SPI clock input; parallel mode: most-significant gain bit (G2) for 3-bit gain selection. |
| SDI/G1 | SPI Data In / Gain Bit | Serial mode: SPI data input; parallel mode: middle gain bit (G1) - enables hardware-configurable gain without firmware. |
| SDO/G0 | SPI Data Out / Gain LSB | Serial mode: readback of internal registers; parallel mode: least-significant gain bit (G0). |
| CSB/SHDN | Chip Select / Shutdown | Active-low SPI enable; high-level assertion places device in ultra-low-power shutdown (≤1 µA). |
| VHSER/VLPAR | Serial High / Parallel Low | Selects interface mode: high = SPI, low = parallel; eliminates need for external mode-strapping resistors. |
| VLSER/VHPAR | Serial Low / Parallel High | Complementary mode-select pin; ensures robust interface selection even with floating inputs. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Continuous auto-zeroing eliminates 1/f noise and reduces offset drift to 50 nV/°C - preserves DC accuracy over temperature and time. |
| Integrated fault detection | Programmable ITEST (10 nA–100 µA) identifies open/shorted sensor leads and degraded connections before system failure. |
| Dual gain interface | SPI register control (G[2:0]) and hardware pin configuration (G0–G2) allow flexible deployment in firmware-driven or fixed-gain systems. |
| EMI-hardened input stage | 92 dB rejection at 1.8 GHz prevents RF rectification errors in wireless-enabled medical or IoT edge nodes. |
| Wide common-mode range | Operates with inputs from −0.1 V to V+ −1.4 V - interfaces directly with shunt-based current sensors and grounded thermocouples. |
Applications
| Bridge Sensor Amplifier | Thermopile Amplifier |
|---|---|
|
Use Scenario: Amplifying mV-level output from full-bridge pressure or load cells in industrial weighing systems. IC Role / Device Role: Precision instrumentation amplifier with programmable gain and zero-drift correction. Use Value: 0.15% max gain error and 10 µV offset enable ≤0.01% full-scale measurement accuracy without factory calibration. |
Use Scenario: Converting nanoamp-level thermopile output into clean, amplified voltage for non-contact temperature sensing. IC Role / Device Role: Low-noise, high-input-impedance amplifier with 27 nV/√Hz input voltage noise at 1 kHz. Use Value: Sub-µV offset and 50 nV/°C drift ensure stable DC response across ambient temperature swings in HVAC or medical thermometers. |
| Precision Low-side Current Sensing | Medical Instrumentation |
|
Use Scenario: Measuring motor phase current by amplifying voltage across a 10 mΩ shunt resistor referenced to system ground. IC Role / Device Role: Ground-sensing instrumentation amplifier with rail-to-rail output and wide CMVR. Use Value: Common-mode range extending 100 mV below V− allows accurate sensing at near-ground potentials without level-shifting circuitry. |
Use Scenario: Signal conditioning for ECG, EEG, or patient monitor front-ends requiring high CMRR and low noise. IC Role / Device Role: Diagnostics-enabled amplifier with 110 dB CMRR and integrated open-circuit detection. Use Value: Fault detection alerts clinicians to disconnected electrodes before misdiagnosis, improving patient safety compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar instrumentation amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA333AIDR | Fixed 10–1000× gain via external resistors; no SPI interface or built-in fault detection; 25 µV max VOS. | Lacks diagnostics and programmable gain - suitable only for static-gain, cost-sensitive designs without lead-fault monitoring. | Choose INA333AIDR when board space is constrained and gain is fixed; avoid if diagnostic coverage or field-upgradable gain is required. |
| AD8420ARMZ | Pin-compatible 14-lead SOIC; 10–1000× gain via pins; no SPI; 60 µV max VOS; 105 dB min CMRR; no fault detection. | Lower CMRR and higher offset limit performance in high-noise industrial settings; lacks EMI rejection specs above 1 GHz. | AD8420ARMZ fits legacy SOIC layouts but trades off precision and diagnostics - use only where TI's LMP8358MTX/NOPB features are non-critical. |
Compared with INA333AIDR and AD8420ARMZ, the LMP8358MTX/NOPB uniquely combines programmable gain, on-chip diagnostics, 92 dB EMI rejection at 1.8 GHz, and 10 µV offset - making it the only option qualified for safety-critical, field-serviceable, or RF-dense medical and industrial applications.
Availability
LMP8358MTX/NOPB is available at Aetrix Electronics and suitable for precision low-side current sensing, bridge sensor amplification, thermopile signal conditioning, and medical instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LMP8358MTX/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 precision signal chain solutions.
The LMP™ precision amplifier product line targets high-accuracy measurement systems - designed specifically for applications demanding ultra-low offset, zero-drift stability, and robust operation in electrically noisy or thermally variable environments.
FAQ
What is the maximum gain error specification for LMP8358MTX/NOPB at gain = 1000?
The LMP8358MTX/NOPB has a maximum gain error of 0.25% at gain = 1000, tested at VOUT = VREF ±1 V and TA = 25°C. This value includes contributions from both chip-level error (0.03%) and temperature coefficient (16 ppm/°C), ensuring predictable performance across operating conditions.
Does LMP8358MTX/NOPB support single-supply operation?
Yes, the LMP8358MTX/NOPB supports true single-supply operation from 2.7 V to 5.5 V. Its input common-mode range extends from 100 mV below V− to 1.4 V below V+, allowing it to amplify ground-referenced signals - such as those from shunt resistors or bridge sensors - without level-shifting circuitry.
How does the fault detection feature work in LMP8358MTX/NOPB?
The LMP8358MTX/NOPB integrates programmable current sources (CUR[2:0] settings) that inject 10 nA–100 µA into +IN/−IN. Open or shorted sensor leads cause abnormal voltage shifts at these pins, triggering diagnostic flags readable via SPI status register - enabling predictive maintenance in medical or industrial systems.
What is the significance of the COMP[2:0] register in LMP8358MTX/NOPB?
The COMP[2:0] register selects internal compensation to optimize bandwidth vs. settling time: COMP = 000 gives 8 MHz GBW and 900 kHz BW at G = 10; COMP = 011 yields 240 MHz GBW and 130 kHz BW at G = 500. This allows dynamic trade-off tuning for fast transient response or high-frequency signal fidelity.
Is LMP8358MTX/NOPB RoHS-compliant and lead-free?
Yes, the LMP8358MTX/NOPB is RoHS-compliant and lead-free, as indicated by the /NOPB suffix per Texas Instruments' packaging nomenclature. It meets JEDEC J-STD-020 moisture sensitivity level 3 and is qualified for Pb-free reflow soldering profiles up to 260°C peak temperature.
LMP8358MTX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMP®
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Zero-Drift
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 11V/µs
- Gain Bandwidth Product:
- 240 MHz
- -3db Bandwidth:
- 930 kHz
- Current - Input Bias:
- 6 pA
- Voltage - Input Offset:
- 0.9 µV
- Current - Supply:
- 1.9mA
- Current - Output / Channel:
- 41 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
LMP8358MTX/NOPB FAQ
1.How can I place an order for LMP8358MTX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP8358MTX/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 LMP8358MTX/NOPB reliable?
The price and inventory of LMP8358MTX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP8358MTX/NOPB is usually 5 days.
3.What payment methods are accepted for LMP8358MTX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP8358MTX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP8358MTX/NOPB?
LMP8358MTX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP8358MTX/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 LMP8358MTX/NOPB?
For technical support, including LMP8358MTX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP8358MTX/NOPB requirements.
6.How does Aetrix verify that LMP8358MTX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMP8358MTX/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 LMP8358MTX/NOPB meets industry standards.
7.What is the process for return or replacement of LMP8358MTX/NOPB?
All LMP8358MTX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMP8358MTX/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 LMP8358MTX/NOPB part is unused and in its original packaging.
Return procedure for LMP8358MTX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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