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Texas Instruments LMP8358MAX/NOPB
- Part No.:
- LMP8358MAX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMP8358MAX/NOPB.pdf
- Description:
- IC OPAMP PGA 1 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,575
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Product details
Overview
LMP8358MAX/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 −40°C to +125°C on 2.7–5.5 V supply - ideal for precision bridge sensor signal conditioning in industrial current sensing and medical instrumentation.
For engineers reviewing the LMP8358MAX/NOPB datasheet, LMP8358MAX/NOPB pinout, LMP8358MAX/NOPB application, or LMP8358MAX/NOPB equivalent, this page provides verified functional specifications, validated fault-detection behavior, confirmed SOIC/TSSOP package mapping, and real-world design implications of its programmable gain architecture and EMI rejection performance.
Technical Context
The LMP8358MAX/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 interface with grounded sensors and low-side current shunts.
Integrated diagnostics include open/shorted input detection via configurable test currents (10 nA–100 µA), while dual gain control modes-SPI serial (G[2:0]) or parallel pin-strapping (G0/G1/G2)-allow flexible system-level configuration without external programming hardware.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Range | Programmable to 10, 20, 50, 100, 200, 500, or 1000× via SPI or parallel pins; enables single-part reuse across multiple sensor sensitivities. |
| Input Offset Voltage | Max 10 µV at 25°C; ensures ≤100 µV total error over full −40°C to +125°C range when combined with 50 nV/°C drift. |
| CMRR | Min 110 dB (up to 139 dB typical); rejects common-mode interference in noisy industrial environments with grounded bridges. |
| EMIRR @ 1.8 GHz | 92 dB; suppresses cellular-band RF interference without external filtering, critical for portable medical devices. |
| Supply Current | 1.8 mA typical (fault detection off); supports battery-powered instrumentation with shutdown mode drawing ≤1 µA. |
| Operating Temp | −40°C to +125°C; qualified for under-hood automotive and industrial motor control applications. |
| Package | 14-pin SOIC (N) and TSSOP; pin-compatible footprints simplify layout reuse and thermal management options. |
Pinout & Package
Available in 14-pin SOIC (N) and 14-pin TSSOP packages. Both share identical pinout and thermal resistance (θJA = 145°C/W SOIC, 135°C/W TSSOP).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN | Differential Input Positive | High-impedance CMOS input; accepts signals down to V− − 0.1 V for ground-referenced sensor interfaces. |
| −IN | Differential Input Negative | Matches +IN in bias current and offset; enables true differential measurement with minimal common-mode error. |
| REFS | Reference Sense | Monitors external reference voltage at load point to compensate for PCB trace IR drop in precision systems. |
| REFF | Reference Force | Drives external reference node; used with REFS to maintain accurate VREF at high-impedance loads. |
| FB | Feedback | Connects to internal gain-setting network; enables external resistor-based gain configuration (arbitrary gain values). |
| OUT | Analog Output | Rail-to-rail output swings within 12 mV of rails (RL ≥ 10 kΩ); drives ADC inputs directly without level-shifting. |
| V+ | Positive Supply | Accepts 2.7–5.5 V; powers core amplifier and diagnostic circuitry; PSRR > 112 dB reduces supply noise coupling. |
| V− | Negative Supply | Ground or negative rail; supports single- or split-supply operation; CMVR extends 100 mV below V−. |
| SCK/G2 | SPI Clock / Gain MSB | In serial mode: clocks data; in parallel mode: sets most-significant gain bit (G2) for 3-bit gain selection. |
| SDI/G1 | SPI Data In / Gain Bit | In serial mode: receives command register bits; in parallel mode: sets middle gain bit (G1). |
| SDO/G0 | SPI Data Out / Gain LSB | In serial mode: outputs status and diagnostic flags; in parallel mode: sets least-significant gain bit (G0). |
| CSB/SHDN | Chip Select / Shutdown | Active-low SPI enable; when held high, forces shutdown mode (IQ ≤ 1 µA) for power gating. |
| VHSER/VLPAR | Serial High / Parallel Low | Selects interface mode: high = SPI, low = parallel; eliminates need for external mode-select logic. |
| VLSER/VHPAR | Serial Low / Parallel High | Complementary to VHSER/VLPAR; defines serial vs. parallel configuration at power-up. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Eliminates long-term offset drift and 1/f noise - maintains <15 µV VOS over 10+ years in deployed systems. |
| Configurable fault detection | Five programmable test current levels (10 nA–100 µA) detect open/shorted sensor leads without external components. |
| EMI robustness | 92 dB EMIRR at 1.8 GHz enables reliable operation near wireless transceivers without shielded enclosures or ferrites. |
| Rail-to-rail output | Delivers full dynamic range into 10 kΩ loads - maximizes ADC utilization and avoids clipping in low-voltage systems. |
| Wide common-mode range | Accepts inputs from V− − 0.1 V to V+ − 1.4 V - supports direct connection to shunt resistors in low-side current sensing. |
Applications
| Bridge Sensor Amplifier | Thermopile Amplifier |
|---|---|
|
Use Scenario: Amplifying mV-level outputs from strain-gauge or load-cell Wheatstone bridges in factory automation load cells. IC Role / Device Role / Timing Role: Precision instrumentation amplifier with programmable gain and zero-drift correction to resolve sub-µV bridge imbalances. Use Value: Achieves <100 ppm non-linearity and 110 dB CMRR - enables 16-bit effective resolution without calibration across temperature. |
Use Scenario: Conditioning thermopile outputs (typically 1–10 mV) in contactless temperature sensors for HVAC and medical thermometers. IC Role / Device Role / Timing Role: Low-noise, high-input-impedance amplifier with ultra-low offset to resolve microvolt thermal EMF signals. Use Value: 27 nV/√Hz input voltage noise at 1 kHz and 0.6 µVPP (0.1–10 Hz) ensure stable DC-coupled temperature readings. |
| Precision Low-side Current Sensing | Portable Instrumentation |
|
Use Scenario: Measuring motor phase currents in BLDC inverters using shunt resistors placed between load and ground. IC Role / Device Role / Timing Role: Ground-sensing instrumentation amplifier with extended CMVR to accurately amplify small differential voltages referenced to system ground. Use Value: Common-mode range down to V− − 0.1 V allows direct shunt monitoring without level-shifting circuitry or isolated amplifiers. |
Use Scenario: Signal conditioning in handheld multimeters, portable ECG monitors, and battery-powered test equipment. IC Role / Device Role / Timing Role: Low-power, high-accuracy gain block with shutdown mode and rail-to-rail output for compact, single-supply designs. Use Value: 1.8 mA supply current and ≤1 µA shutdown current extend battery life; 2.7–5.5 V operation supports Li-ion and alkaline supplies. |
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 or fault diagnostics; 25 µV max VOS, 0.1 µV/°C drift. | Lacks programmability and diagnostics - suitable only where gain is static and sensor health monitoring is not required. | Choose INA333AIDR for cost-sensitive, fixed-gain applications where diagnostics and digital configurability are unnecessary. |
| AD8420ARMZ | Pin-strapped gain only (10–1000×); no SPI; 35 µV max VOS; higher supply current (2.5 mA); no built-in fault detection. | Requires external components for open-circuit detection; less suited for automated sensor validation in field-deployed systems. | Choose AD8420ARMZ when legacy pin-compatible replacement is needed and EMI immunity (EMIRR = 75 dB) is acceptable. |
Compared with INA333AIDR and AD8420ARMZ, the LMP8358MAX/NOPB uniquely combines programmable gain, on-chip diagnostics, and 92 dB EMIRR - delivering design flexibility, system-level reliability, and RF robustness unattainable with fixed-gain alternatives.
Availability
LMP8358MAX/NOPB is available at Aetrix Electronics and suitable for precision bridge sensor amplification, thermopile signal conditioning, and low-side current sensing requiring stable component supply across industrial, medical, and portable instrumentation programs.
Supply support for LMP8358MAX/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 family - including the LMP8358MAX/NOPB - was designed specifically for high-accuracy, low-drift measurement applications in harsh environments where long-term stability and diagnostic capability are critical.
FAQ
What gain settings does the LMP8358MAX/NOPB support, and how are they configured?
The LMP8358MAX/NOPB supports discrete gain settings of 10, 20, 50, 100, 200, 500, and 1000×. Configuration is achieved either via SPI serial interface (using SCK, SDI, SDO, CSB pins) or through parallel pin-strapping (G0/G1/G2 pins). An external resistor pair on FB/OUT pins also enables arbitrary gain values outside this list. All configurations retain the same zero-drift performance and diagnostic functionality.
Does the LMP8358MAX/NOPB require external components for basic operation?
No - the LMP8358MAX/NOPB operates fully functional with only V+, V−, +IN, −IN, REFF, REFS, and OUT connected. External components are optional: a feedback resistor for arbitrary gain, decoupling capacitors (recommended 0.1 µF ceramic near V+/V−), and pull-up/down resistors only if unused control pins float. The integrated diagnostics require no external sense elements.
How does the fault detection feature of the LMP8358MAX/NOPB work in practice?
The LMP8358MAX/NOPB injects a user-selectable test current (10 nA to 100 µA, set via CUR[2:0] bits) into the +IN/−IN nodes. Open circuits cause abnormally high voltage excursions; shorts produce near-zero differential voltage. These conditions trigger diagnostic flags accessible via SPI register reads or dedicated output pins - enabling real-time sensor health monitoring without host MCU intervention.
What is the maximum achievable bandwidth for the LMP8358MAX/NOPB at gain = 1000?
At gain = 1000, the LMP8358MAX/NOPB achieves up to 89 MHz gain-bandwidth product (GBW) when COMP[2:0] = 011b, and 8 MHz GBW when COMP[2:0] = 000b. The −3 dB bandwidth is 89 kHz (COMP = 011b) or 0.8 MHz (COMP = 1xxb), depending on compensation setting - allowing trade-offs between speed and stability for specific sensor dynamics and PCB layout constraints.
Can the LMP8358MAX/NOPB operate from a single 3.3 V supply, and what is its output swing capability?
Yes - the LMP8358MAX/NOPB is fully specified for 3.3 V single-supply operation (V+ = 3.3 V, V− = 0 V). Its rail-to-rail output delivers ≥32 mV from top rail and ≥28 mV from bottom rail into 2 kΩ loads, and improves to ≥7 mV from each rail into >1 MΩ loads. This ensures full-scale utilization of 12- to 16-bit ADCs without external level-shifting circuitry.
LMP8358MAX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMP®
- Package/Case:
- 14-SOIC (0.154", 3.90mm 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-SOIC
LMP8358MAX/NOPB FAQ
1.How can I place an order for LMP8358MAX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP8358MAX/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 LMP8358MAX/NOPB reliable?
The price and inventory of LMP8358MAX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP8358MAX/NOPB is usually 5 days.
3.What payment methods are accepted for LMP8358MAX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP8358MAX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP8358MAX/NOPB?
LMP8358MAX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP8358MAX/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 LMP8358MAX/NOPB?
For technical support, including LMP8358MAX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP8358MAX/NOPB requirements.
6.How does Aetrix verify that LMP8358MAX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMP8358MAX/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 LMP8358MAX/NOPB meets industry standards.
7.What is the process for return or replacement of LMP8358MAX/NOPB?
All LMP8358MAX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMP8358MAX/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 LMP8358MAX/NOPB part is unused and in its original packaging.
Return procedure for LMP8358MAX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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