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Texas Instruments LMP8358MT/NOPB
- Part No.:
- LMP8358MT/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LMP8358MT/NOPB.pdf
- Description:
- IC OPAMP PGA 1 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:219
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Product details
Overview
LMP8358MT/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 offset voltage, 110 dB min CMRR, and operates from 2.7V to 5.5V supply across −40°C to 125°C. It is used in precision bridge sensor interfaces where long-term stability and fault detection are critical.
For engineers reviewing the LMP8358MT/NOPB datasheet, LMP8358MT/NOPB pinout, LMP8358MT/NOPB application, or LMP8358MT/NOPB equivalent, this page provides verified technical context, validated pin functions, real-world application mappings, and confirmed alternative options for high-accuracy current sensing, thermopile amplification, and medical instrumentation signal chains.
Technical Context
The LMP8358MT/NOPB implements auto-zeroing and chopper-stabilized techniques to eliminate input offset drift and 1/f noise over temperature and time. 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 low-side current shunts.
Integrated diagnostics include open/shorted input detection via programmable test currents (10 nA–100 µA) and configurable fault reporting through dedicated pins. Gain is set via SPI (G[2:0]) or parallel interface (G2/G1/G0), with five COMP modes adjusting bandwidth/slew rate trade-offs from 0.8 MHz to 240 MHz GBW.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Range | 10× to 1000× programmable via SPI or parallel interface; enables single-part flexibility across multiple sensor sensitivities. |
| Input Offset Voltage | Max 10 µV at 25°C; ensures ≤0.1% error in 10 mV full-scale bridge outputs without calibration. |
| Offset Drift | Max 50 nV/°C; maintains sub-µV drift over industrial temperature range, eliminating recalibration needs. |
| CMRR | Min 110 dB (up to 142 dB at 5 V); rejects common-mode interference in noisy motor control or power supply environments. |
| Supply Range | 2.7 V to 5.5 V; compatible with both 3.3 V microcontroller systems and 5 V legacy industrial rails. |
| EMIRR | 92 dB at 1.8 GHz; suppresses cellular/WiFi interference in portable medical or IoT edge devices. |
| Operating Temp | −40°C to +125°C; qualified for under-hood automotive, industrial PLC, and downhole sensing applications. |
Pinout & Package
Package: 14-pin SOIC (N) with 1.27 mm pitch; RoHS-compliant, lead-free, and rated for surface-mount reflow per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN | Differential Input (Non-Inverting) | High-impedance CMOS input accepting signals referenced to system ground or negative rail. |
| −IN | Differential Input (Inverting) | Matches +IN in bias current and offset; forms precision differential pair for bridge/thermopile inputs. |
| REFS | Reference Sense | Monitors external reference voltage at load point to reject trace resistance errors in remote sensing. |
| REFF | Reference Force | Drives reference node to maintain stable VREF despite PCB trace impedance or load variation. |
| FB | Feedback | Connects to internal gain-setting network; enables external resistor programming for arbitrary gains. |
| OUT | Analog Output | Rail-to-rail output driving 10 kΩ loads within 12 mV of rails at 3.3 V supply. |
| V+ | Positive Supply | Accepts 2.7–5.5 V; powers analog core and digital interface; decoupling required per layout guidelines. |
| V− | Negative Supply | Ground or negative rail; supports single-supply (0 V) or dual-supply (±2.5 V) operation. |
| SCK/G2 | SPI Clock / Parallel Gain MSB | In serial mode: clocks data; in parallel mode: sets most-significant gain bit (G2). |
| SDI/G1 | SPI Data In / Parallel Gain Bit | In serial mode: accepts register writes; in parallel mode: sets middle gain bit (G1). |
| SDO/G0 | SPI Data Out / Parallel Gain LSB | In serial mode: returns status/gain data; in parallel mode: sets least-significant gain bit (G0). |
| CSB/SHDN | Chip Select / Shutdown Control | Active-low SPI enable; high-level logic disables amplifier, reducing supply current to ≤1 µA. |
| VHSER/VLPAR | Serial High / Parallel Low | Selects interface mode: high = SPI, low = parallel; must be tied before power-up. |
| VLSER/VHPAR | Serial Low / Parallel High | Complement to VHSER/VLPAR; defines interface selection with opposite logic polarity. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Eliminates 1/f noise and thermal drift-critical for DC-coupled sensor measurements over years of field operation. |
| Programmable fault detection | Five selectable test current levels (10 nA–100 µA) enable robust open/short diagnostics on sensor leads without external circuitry. |
| Configurable bandwidth | Five COMP settings adjust GBW from 0.8 MHz to 240 MHz, allowing optimization for speed vs. noise in each application. |
| Rail-to-rail output | Delivers full dynamic range into 10 kΩ loads-maximizes ADC utilization in 3.3 V systems with limited headroom. |
| High EMI rejection | 92 dB EMIRR at 1.8 GHz prevents corruption from wireless transceivers in portable diagnostic equipment. |
Applications
| Bridge Sensor Amplifier | Thermopile Amplifier |
|---|---|
|
Use Scenario: Amplifying mV-level outputs from strain-gauge or load-cell bridges in industrial weighing systems. IC Role / Device Role / Timing Role: Precision instrumentation amplifier with programmable gain and zero-drift correction to preserve resolution over temperature cycles. Use Value: Enables 16-bit+ effective resolution without periodic recalibration, supporting ISO 9001-compliant metrology. |
Use Scenario: Converting nanoamp-level thermopile outputs in non-contact infrared temperature sensors. IC Role / Device Role / Timing Role: Low-noise, high-input-impedance amplifier with ultra-low offset to resolve sub-millivolt signals at ambient temperatures. Use Value: Achieves ±0.1°C accuracy in medical ear thermometers by rejecting thermal EMF and drift-induced errors. |
| Precision Low-side Current Sensing | Portable Medical Instrumentation |
|
Use Scenario: Measuring motor phase currents in battery-powered power tools using shunt resistors below 10 mΩ. IC Role / Device Role / Timing Role: Ground-referenced instrumentation amplifier with wide common-mode range (−0.1 V to V+ −1.4 V) and fault detection. Use Value: Detects shunt disconnection or solder joint failure in real time, preventing overcurrent damage during runtime. |
Use Scenario: Signal conditioning in handheld ECG or pulse oximeter front-ends requiring low power and high reliability. IC Role / Device Role / Timing Role: Low-supply-current (1.8 mA), wide-temp-range amplifier with integrated diagnostics for FDA Class II device compliance. Use Value: Reduces BOM count by integrating reference force/sense and fault reporting-accelerating IEC 62304 validation. |
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 gain options only (1–1000×); no SPI interface; 25 µV max offset; 0.1 µV/°C drift. | Lacks programmable diagnostics and multi-gain flexibility; suited for cost-sensitive, static-gain designs. | Choose INA333AIDR when gain is fixed and diagnostics are unnecessary-reduces firmware complexity and bill-of-materials. |
| AD8420ARMZ | Pin-compatible 14-lead SOIC; 35 µV max offset; 0.3 µV/°C drift; no integrated fault detection or SPI. | Requires external circuitry for open-wire detection; lower EMI rejection (75 dB at 1.8 GHz) than LMP8358MT/NOPB. | Choose AD8420ARMZ only if legacy board reuse is mandatory and diagnostics can be implemented externally. |
Compared with INA333AIDR and AD8420ARMZ, the LMP8358MT/NOPB uniquely combines programmable gain, zero-drift performance, and embedded diagnostics in a single 14-pin package-enabling adaptive sensor interfaces and predictive maintenance capabilities not achievable with fixed-function alternatives.
Availability
LMP8358MT/NOPB is available at Aetrix Electronics and suitable for precision low-side current sensing, bridge sensor amplification, and portable medical instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LMP8358MT/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 delivering analog, embedded processing, and connectivity solutions with emphasis on reliability, longevity, and design-in support.
The LMP™ precision amplifier product line targets high-accuracy measurement systems-designed specifically for applications demanding ultra-low drift, high CMRR, and robust operation in harsh electrical environments.
FAQ
What gain settings does the LMP8358MT/NOPB support?
The LMP8358MT/NOPB supports discrete gain settings of 10×, 20×, 50×, 100×, 200×, 500×, and 1000× via SPI or parallel interface. It also allows arbitrary gain values using two external resistors connected to the FB pin, providing flexibility for custom scaling without firmware changes.
Does the LMP8358MT/NOPB require external components for zero-drift operation?
No-the LMP8358MT/NOPB integrates all zero-drift circuitry internally, including auto-zeroing and chopper stabilization. No external capacitors, trimming resistors, or calibration routines are needed to achieve its specified 10 µV max offset and 50 nV/°C drift performance.
How does the fault detection feature work in the LMP8358MT/NOPB?
The LMP8358MT/NOPB applies five selectable test currents (10 nA to 100 µA) to the +IN/−IN inputs via the CUR[2:0] register bits. Open or short conditions alter the resulting voltage at REFF, triggering a fault flag on the dedicated pin-enabling real-time sensor health monitoring without host processor intervention.
Can the LMP8358MT/NOPB operate from a single 3.3 V supply?
Yes-the LMP8358MT/NOPB is fully specified for 2.7 V to 5.5 V operation. At 3.3 V, it delivers rail-to-rail output swing within 12 mV of both rails into 10 kΩ, supports −0.1 V to 1.9 V common-mode input range, and draws only 1.8 mA quiescent current-ideal for battery-powered instrumentation.
What is the purpose of the REFF and REFS pins on the LMP8358MT/NOPB?
The REFF (Reference Force) and REFS (Reference Sense) pins implement Kelvin connection for the reference voltage. REFF actively drives the reference node, while REFS senses it at the load-canceling voltage drop across PCB traces or connectors to maintain precise gain and offset accuracy in high-precision measurement paths.
LMP8358MT/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMP®
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- 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
LMP8358MT/NOPB FAQ
1.How can I place an order for LMP8358MT/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP8358MT/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 LMP8358MT/NOPB reliable?
The price and inventory of LMP8358MT/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP8358MT/NOPB is usually 5 days.
3.What payment methods are accepted for LMP8358MT/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP8358MT/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP8358MT/NOPB?
LMP8358MT/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP8358MT/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 LMP8358MT/NOPB?
For technical support, including LMP8358MT/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP8358MT/NOPB requirements.
6.How does Aetrix verify that LMP8358MT/NOPB is sourced from the original manufacturer or authorized distributors?
All LMP8358MT/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 LMP8358MT/NOPB meets industry standards.
7.What is the process for return or replacement of LMP8358MT/NOPB?
All LMP8358MT/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMP8358MT/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 LMP8358MT/NOPB part is unused and in its original packaging.
Return procedure for LMP8358MT/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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