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Texas Instruments LMP8602QMM/NOPB
- Part No.:
- LMP8602QMM/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LMP8602QMM/NOPB.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,974
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Product details
Overview
LMP8602QMM/NOPB from Texas Instruments is a precision bidirectional current-sense amplifier with fixed 50× gain, –22V to +60V input common-mode voltage range at 5V supply, 90dB minimum CMRR, ±1mV max input offset voltage, and in-line filter capability via A1/A2 pins for signal conditioning in high-noise industrial power systems.
For engineers reviewing the LMP8602QMM/NOPB datasheet, LMP8602QMM/NOPB pinout, LMP8602QMM/NOPB application, or LMP8602QMM/NOPB equivalent, key selection criteria include its single-supply bidirectional operation, precise 50× total gain (10× preamp + 5× buffer), ±10μV/°C TCVOS, 60kHz bandwidth, and support for high-side/lower-side shunt sensing in DC/DC converters and motor control stages.
Technical Context
The LMP8602QMM/NOPB implements a two-stage architecture: a chopping-based level-shift preamplifier (gain = 10×, output on A1) followed by a buffered output stage (gain = 5×, output on OUT). The A1–A2 path enables external RC filtering or gain adjustment without affecting internal precision.
Its proprietary input stage uses level-shift resistors to withstand large differential fault voltages while maintaining low offset drift and high CMRR across –40°C to +125°C. Input impedance is 590kΩ (differential) and 295kΩ (common-mode) in the DGK package at 5V supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Total Gain | 50× (10× preamp + 5× buffer); drives 12-bit ADCs to full scale with ±25mV sense voltage |
| Common-Mode Range | –22V to +60V at 5V supply; supports high-side sensing in 48V systems and negative rail monitoring |
| CMRR | ≥90dB min (at 1kHz); rejects noise from switching regulators and motor commutation |
| Input Offset Voltage | ±1mV max; enables accurate bidirectional current measurement down to ±20mA with 50mΩ shunt |
| TCVOS | ±10μV/°C max; ensures <±0.5mV drift over –40°C to +125°C ambient |
| Bandwidth | 60kHz; captures fast transient currents in PWM-driven motor and converter applications |
| Supply Current | 1.1mA typical at 5V; suitable for always-on monitoring in energy-sensitive systems |
Pinout & Package
The LMP8602QMM/NOPB is housed in an 8-pin VSSOP (DGK) package measuring 3.00mm × 4.90mm, optimized for space-constrained PCB layouts in power modules and server VRMs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: –IN | Negative input | Connects to low side of current-shunt resistor; referenced to high common-mode potential |
| 2: GND | Power ground | Analog ground reference for internal circuitry; must be tied to clean system ground plane |
| 3: VS | Positive supply | Single 3.3V or 5V rail; powers both preamp and buffer stages |
| 4: A2 | Buffer input | Receives filtered or adjusted signal from A1; enables external gain tuning or anti-aliasing |
| 5: OUT | Single-ended output | 50× amplified, rail-to-rail capable output driving ADC inputs directly |
| 6: OFFSET | Bidirectional offset control | DC bias setting point (0V to VS) to center output for bidirectional current sensing |
| 7: +IN | Positive input | Connects to high side of shunt; tolerates up to +60V common-mode with respect to GND |
| 8: A1 | Preamplifier output | 10× amplified signal with 100kΩ series impedance; interface point for external filter network |
Key Features
| Feature | Design Value |
|---|---|
| In-line filter capability | A1 and A2 pins expose preamp output and buffer input, enabling user-defined RC filters to suppress PWM noise before final amplification |
| Chopping-based level-shift input | Eliminates input-stage offset drift and enables robust operation under high dV/dt transients in motor drive circuits |
| High fault tolerance | Input resistors protect against >±80V differential faults-prevents latch-up or damage during short-circuit events |
| Bidirectional single-supply operation | OFFSET pin allows output swing centered at mid-supply (e.g., 2.5V @ 5V), enabling ± current measurement without dual rails |
| Wide common-mode range | Operates from –22V to +60V at 5V supply-supports sensing in negative-ground battery systems and positive-ground telecom supplies |
Applications
| DC/DC Converter Monitoring | Linear Motor Power Stage |
|---|---|
Use Scenario: Real-time phase current sensing in synchronous buck converters for digital voltage regulation in Intel server VRMs. IC Role / Device Role / Timing Role: High-side current-shunt monitor providing isolated, low-drift feedback to PMBus-enabled controller ICs. Use Value: Enables tight current-loop control with <±0.5% gain error and 60kHz bandwidth to track fast load transients. | Use Scenario: Bidirectional current measurement in linear actuator drivers for precision motion control in semiconductor equipment. IC Role / Device Role / Timing Role: Differential amplifier converting shunt voltage to single-ended signal for FPGA-based closed-loop servo control. Use Value: ±10μV/°C TCVOS ensures stable zero-current baseline across thermal cycling in vacuum chamber environments. |
| Scientific Instrumentation | Field Transmitter & Sensor |
Use Scenario: Low-noise current monitoring in benchtop source-measure units (SMUs) requiring sub-mA resolution and high linearity. IC Role / Device Role / Timing Role: Precision front-end amplifier for 4-wire Kelvin shunt measurements with programmable offset calibration. Use Value: 90dB CMRR rejects EMI from adjacent switching supplies; 16.4µVP-P (0.1–10Hz) noise enables 16-bit effective resolution. | Use Scenario: 4–20mA loop-powered field transmitter sensing valve position or pressure via HART-compatible analog front end. IC Role / Device Role / Timing Role: Isolated current-sense element interfacing with low-power microcontroller ADC in hazardous-area certified designs. Use Value: Single 3.3V supply operation and 1.1mA quiescent current extend battery life; –4V to +27V CM range accommodates reverse-polarity protection circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA240A1QDRQ1 | 500kHz bandwidth, 120dB CMRR, but only –4V to +80V CM range; no A1/A2 filter access | Better for high-speed motor control; lacks in-line filter flexibility for noisy DC/DC converters | Choose INA240A1QDRQ1 when bandwidth >100kHz is required and external filtering is handled elsewhere |
| MAX40056ASA+T | 200kHz bandwidth, ±200μV offset, but only –0.2V to +65V CM range; no bidirectional offset pin | Suited for unidirectional high-side sensing in automotive battery monitors; no native bidirectional support | Choose MAX40056ASA+T for AEC-Q100-compliant automotive systems where bidirectionality is not needed |
Compared with INA240A1QDRQ1 and MAX40056ASA+T, the LMP8602QMM/NOPB uniquely combines 50× precision gain, accessible A1/A2 nodes for custom filtering, and dedicated OFFSET pin for true single-supply bidirectional operation-making it optimal for lab-grade instrumentation and industrial power stages where signal integrity and design flexibility are critical.
Availability
LMP8602QMM/NOPB is available at Aetrix Electronics and suitable for DC/DC converter monitoring, linear motor power stages, scientific instrumentation, and field transmitter & sensor applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LMP8602QMM/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 designed specifically for high-accuracy, wide common-mode current sensing in power conversion and motor control systems-emphasizing low drift, fault resilience, and flexible signal conditioning.
FAQ
What is the maximum common-mode voltage supported by the LMP8602QMM/NOPB?
The LMP8602QMM/NOPB supports a maximum input common-mode voltage range of –22V to +60V when operating from a 5V supply, and –4V to +27V at 3.3V supply. This enables reliable high-side sensing in 48V systems and compatibility with negative-rail configurations found in telecom and test equipment. The specification is validated per TI's SLVSJ15 datasheet Section 5.6.
How does the A1 and A2 pin interface function in the LMP8602QMM/NOPB?
The A1 pin outputs the 10× preamplified signal through a trimmed 100kΩ resistor; A2 accepts that signal as input to the 5× output buffer. This two-point interface allows insertion of external RC networks between A1 and A2 to implement anti-aliasing or noise-reduction filters without degrading the internal gain accuracy or CMRR of the LMP8602QMM/NOPB.
Can the LMP8602QMM/NOPB measure bidirectional current with a single 5V supply?
Yes-the LMP8602QMM/NOPB supports true bidirectional current sensing using its dedicated OFFSET pin. Applying a DC bias (e.g., 2.5V) to OFFSET centers the OUT pin output at mid-supply, allowing positive and negative differential inputs across the shunt to produce corresponding above- and below-mid-scale output voltages-all while operating from a single 5V rail.
What is the typical gain error and drift performance of the LMP8602QMM/NOPB?
The LMP8602QMM/NOPB has a typical gain error of ±0.5% and gain error drift of ±2.8ppm/°C over –40°C to +125°C. These values ensure stable scaling across temperature in applications like server VRMs and motor drives where consistent current-to-voltage conversion is essential for closed-loop stability and safety compliance.
Is the LMP8602QMM/NOPB RoHS-compliant and qualified for automotive use?
The LMP8602QMM/NOPB is RoHS-compliant and manufactured in TI's ISO/TS 16949-certified facilities, but it is not AEC-Q200 qualified. It is rated for industrial temperature range (–40°C to +125°C) and intended for industrial, computing, and instrumentation applications-not automotive safety-critical systems. For automotive use, TI recommends the pin-compatible LMP8602QMMX/NOPB variant with extended qualification.
LMP8602QMM/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
LMP8602QMM/NOPB FAQ
1.How can I place an order for LMP8602QMM/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP8602QMM/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 LMP8602QMM/NOPB reliable?
The price and inventory of LMP8602QMM/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP8602QMM/NOPB is usually 5 days.
3.What payment methods are accepted for LMP8602QMM/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP8602QMM/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP8602QMM/NOPB?
LMP8602QMM/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP8602QMM/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 LMP8602QMM/NOPB?
For technical support, including LMP8602QMM/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP8602QMM/NOPB requirements.
6.How does Aetrix verify that LMP8602QMM/NOPB is sourced from the original manufacturer or authorized distributors?
All LMP8602QMM/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 LMP8602QMM/NOPB meets industry standards.
7.What is the process for return or replacement of LMP8602QMM/NOPB?
All LMP8602QMM/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMP8602QMM/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 LMP8602QMM/NOPB part is unused and in its original packaging.
Return procedure for LMP8602QMM/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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