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Texas Instruments LMP8603MME/NOPB
- Part No.:
- LMP8603MME/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LMP8603MME/NOPB.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,012
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Product details
Overview
LMP8603MME/NOPB from Texas Instruments is a precision bidirectional current-sense amplifier with fixed 100× gain, –22V to +60V input common-mode voltage range (at 5V supply), ±1mV max input offset voltage, and 90dB minimum CMRR. It enables high-accuracy shunt-based current monitoring in industrial power supplies and server VRMs where wide common-mode rejection and low drift are critical.
For engineers reviewing the LMP8603MME/NOPB datasheet, LMP8603MME/NOPB pinout, LMP8603MME/NOPB application, or LMP8603MME/NOPB equivalent, key selection criteria include its 100× fixed gain, in-line filter capability via A1/A2 pins, ±10μV/°C TCVOS, single-supply bidirectional operation, and VSSOP-8 package compatibility with space-constrained PCB layouts.
Technical Context
The LMP8603MME/NOPB implements a two-stage architecture: a chopper-stabilized preamplifier (gain = 10×, trimmed 100kΩ output impedance) followed by a buffer stage (gain = 10×), yielding total gain of 100×. Its level-shift input stage tolerates large differential fault voltages while maintaining precision under high common-mode stress.
Signal conditioning is enabled via accessible A1 (preamplifier output) and A2 (buffer input) terminals, supporting external RC filtering or gain adjustment. The OFFSET pin provides DC bias control for bidirectional sensing, allowing full-scale output swing across both positive and negative current directions without dual supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Total Gain | 100× (±0.5% error) - drives 12-bit ADCs to full scale with ±25mV shunt voltage |
| Common-Mode Range | –22V to +60V at 5V supply - supports high-side sensing in 48V systems and negative rail monitoring |
| Input Offset Voltage | ±1mV max - ensures ≤1% error at 100mV sense voltage without calibration |
| TCVOS | ±10μV/°C max - contributes <0.1mV drift over –40°C to +125°C ambient |
| CMRR | 90dB min (10kHz) - rejects >30kV/V common-mode interference in noisy motor drive environments |
| Bandwidth | 60kHz - captures fast transient currents in DC/DC converter switching cycles |
| Supply Current | 1.1mA typ - enables low-power operation in always-on monitoring circuits |
Pinout & Package
The LMP8603MME/NOPB is housed in an 8-pin VSSOP (DGK) package measuring 3.00mm × 4.90mm, optimized for thermal performance and board space efficiency in high-density power modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: –IN | Negative input | Connects to low-side of current shunt; accepts common-mode down to –22V |
| 2: GND | Power ground | Analog reference for internal circuitry; requires low-impedance connection to system ground plane |
| 3: VS | Positive supply | Single 3.3V or 5V rail; powers all internal stages including level-shift circuitry |
| 4: OUT | Single-ended output | 100× amplified, buffered output referenced to GND; drives ADC inputs directly |
| 5: –IN (redundant) | Negative input | Duplicate pin for improved layout symmetry and reduced parasitic inductance in high-frequency paths |
| 6: OFFSET | DC offset control | Biasing input to set zero-current output level; enables bidirectional sensing with single supply |
| 7: +IN | Positive input | Connects to high-side of current shunt; withstands up to +60V common-mode |
| 8: A1 | Preamplifier output | 10× gain node with 100kΩ output impedance; used for external filtering or gain modification |
Key Features
| Feature | Design Value |
|---|---|
| In-line filter capability | A1 and A2 pins expose internal gain stages, enabling insertion of RC networks to suppress PWM noise before final amplification |
| Chopper-stabilized input stage | Reduces 1/f noise and thermal drift, achieving ±10μV/°C TCVOS for stable accuracy across temperature |
| Level-shift input resistors | Protect against ±82V differential fault conditions - prevents latch-up or damage during short-circuit events |
| Bidirectional single-supply operation | OFFSET pin allows midscale output biasing (e.g., 2.5V on 5V rail), enabling measurement of forward/reverse current flow |
| High CMRR at 10kHz | 83dB min at 10kHz ensures accurate sensing in presence of high-frequency switching noise from synchronous buck converters |
Applications
| Server VRM Monitoring | Industrial DC/DC Converter |
|---|---|
Use Scenario: Real-time phase current monitoring in Intel CPU voltage regulator modules with 48V input and sub-1V output. IC Role / Device Role / Timing Role: High-side current-sense amplifier interfacing between 0.5mΩ shunt and 16-bit SAR ADC. Use Value: 100× gain delivers 2.5V full-scale output from ±25mV shunt drop, enabling 0.1% current resolution without gain-switching circuitry. | Use Scenario: Output current feedback in isolated 24V-to-5V flyback converter powering PLC I/O modules. IC Role / Device Role / Timing Role: Bidirectional shunt monitor on secondary-side synchronous rectifier path. Use Value: –22V to +60V common-mode range accommodates ground-referenced sensing despite transformer leakage and EMI transients. |
| Linear Motor Power Stage | Field Transmitter & Sensor |
Use Scenario: Closed-loop current control in servo-driven linear actuators with ±10A peak output. IC Role / Device Role / Timing Role: Low-drift bidirectional amplifier feeding FPGA-based current loop controller. Use Value: ±10μV/°C TCVOS limits thermal-induced offset error to <1.3mV over –40°C to +85°C operating range. | Use Scenario: 4–20mA loop-powered transmitter measuring process current in hazardous-area instrumentation. IC Role / Device Role / Timing Role: Precision shunt monitor embedded in analog front-end of HART-enabled sensor node. Use Value: 90dB CMRR rejects common-mode noise from 24V loop supply and nearby AC mains wiring. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA240A1IDR | 100× gain, –5V to 80V common-mode, 120kHz bandwidth, higher quiescent current (2.4mA) | Better bandwidth for fast-switching GaN inverters; less suitable for ultra-low-power always-on monitoring | Select when higher speed and extended common-mode range outweigh supply current constraints |
| MAX40056ATA+T | 100× gain, –0.2V to 65V common-mode, 200kHz bandwidth, integrated overvoltage protection | Superior transient immunity for automotive battery monitoring; lacks A1/A2 filter access | Prefer for safety-critical 12V/48V battery systems requiring built-in fault clamping |
Compared with INA240A1IDR and MAX40056ATA+T, the LMP8603MME/NOPB offers unique in-line filter access via A1/A2 pins and lower 1.1mA supply current, making it optimal for cost-sensitive industrial power supplies where programmable filtering and low power are prioritized over maximum bandwidth or automotive-grade protection.
Availability
LMP8603MME/NOPB is available at Aetrix Electronics and suitable for server VRM monitoring, industrial DC/DC converter feedback, and linear motor power stage current sensing requiring stable component supply and long-term production continuity.
Supply support for LMP8603MME/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 and embedded processing solutions for industrial, automotive, and communications markets.
The LMP860x product line was engineered specifically for high-accuracy, wide common-mode current sensing in unidirectional and bidirectional configurations-targeting power conversion, motor control, and precision instrumentation.
FAQ
What is the maximum common-mode voltage supported by the LMP8603MME/NOPB?
The LMP8603MME/NOPB supports a –22V to +60V input common-mode voltage range when operated from a 5V supply, enabling reliable high-side sensing in 48V systems and negative-rail monitoring in industrial equipment. This specification is validated per TI's SLVSJ15 datasheet Section 5.6.
Does the LMP8603MME/NOPB require dual supplies for bidirectional current measurement?
No, the LMP8603MME/NOPB operates from a single 3.3V or 5V supply and achieves bidirectional sensing using its dedicated OFFSET pin to set the output midscale voltage. This eliminates the need for dual rails while maintaining full-scale output swing for both positive and negative current directions.
Can external filtering be added to the LMP8603MME/NOPB signal path?
Yes-the LMP8603MME/NOPB exposes its internal preamplifier output at the A1 pin and buffer input at the A2 pin, enabling insertion of passive RC filters between them. This in-line filter capability allows targeted suppression of PWM switching noise without affecting gain accuracy or stability.
What is the typical supply current consumption of the LMP8603MME/NOPB?
The LMP8603MME/NOPB draws 1.1mA typical supply current at 5V operation (Section 5.6, Electrical Characteristics), with a guaranteed maximum of 1.5mA over –40°C to +125°C. This low quiescent current supports energy-efficient designs in always-on monitoring applications.
How does the LMP8603MME/NOPB protect against input overvoltage faults?
The LMP8603MME/NOPB incorporates level-shift input resistors that enable tolerance of up to ±82V differential input voltage (Section 5.1, Absolute Maximum Ratings), preventing permanent damage during fault conditions such as shunt short-circuits-unlike many competitive amplifiers lacking this robust front-end architecture.
LMP8603MME/NOPB 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:
- Active
- Amplifier Type:
- Current Sense
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 0.83V/µs
- Gain Bandwidth Product:
- 60 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.04 pA
- Voltage - Input Offset:
- 150 µV
- Current - Supply:
- 1.1mA
- Current - Output / Channel:
- 48 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
LMP8603MME/NOPB FAQ
1.How can I place an order for LMP8603MME/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP8603MME/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 LMP8603MME/NOPB reliable?
The price and inventory of LMP8603MME/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP8603MME/NOPB is usually 5 days.
3.What payment methods are accepted for LMP8603MME/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP8603MME/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP8603MME/NOPB?
LMP8603MME/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP8603MME/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 LMP8603MME/NOPB?
For technical support, including LMP8603MME/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP8603MME/NOPB requirements.
6.How does Aetrix verify that LMP8603MME/NOPB is sourced from the original manufacturer or authorized distributors?
All LMP8603MME/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 LMP8603MME/NOPB meets industry standards.
7.What is the process for return or replacement of LMP8603MME/NOPB?
All LMP8603MME/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMP8603MME/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 LMP8603MME/NOPB part is unused and in its original packaging.
Return procedure for LMP8603MME/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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