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Texas Instruments LMP8602QMMX/NOPB
- Part No.:
- LMP8602QMMX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LMP8602QMMX/NOPB.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:7,000
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Product details
Overview
LMP8602QMMX/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 for signal conditioning in high-noise industrial power systems.
For engineers reviewing the LMP8602QMMX/NOPB datasheet, LMP8602QMMX/NOPB pinout, LMP8602QMMX/NOPB application, or LMP8602QMMX/NOPB equivalent, key selection criteria include common-mode voltage tolerance, gain accuracy over temperature, input offset drift, single-supply bidirectional operation, and A1/A2 inter-stage access for external filtering or gain adjustment.
Technical Context
The LMP8602QMMX/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×, total gain = 50×). The A1 and A2 pins provide direct access to the inter-stage node, enabling external RC filtering or gain modification without affecting the input stage's high CMRR or low offset performance.
It operates from a single 3.3V or 5V supply, supports bidirectional sensing via the OFFSET pin, and withstands large differential fault voltages due to integrated input level-shift resistors - a key differentiator versus conventional current-shunt monitors lacking this protection mechanism.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Total Gain | 50× (±0.5% gain error) - drives 12-bit ADCs to full scale with ±25mV shunt voltage input |
| Common-Mode Range | –22V to +60V at 5V supply - enables direct sensing in 48V telecom, server, and off-highway vehicle power rails |
| CMRR | ≥90dB (min) at 1kHz - rejects noise from switching regulators and motor drives without external compensation |
| Input Offset Voltage | ±1mV (max) - ensures ≤±50mV output error at 50× gain, critical for low-current detection accuracy |
| Offset Drift | ±10μV/°C (max) - limits thermal-induced error to <±1.25mV over –40°C to +125°C ambient |
| Bandwidth | 60kHz - supports real-time monitoring of fast transient currents in DC/DC converters and motor control loops |
| Supply Current | 1.1mA (typ) at 5V - enables low-power operation in always-on monitoring circuits |
Pinout & Package
The LMP8602QMMX/NOPB is packaged in an 8-pin VSSOP (DGK) package measuring 3.00mm × 4.90mm, optimized for space-constrained PCB layouts in server and instrumentation applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: –IN | Negative input | Connects to low-side of shunt resistor; accepts common-mode voltages down to –22V |
| 2: A1 | Preamplifier output | Provides 10×-gained signal; enables external RC filter insertion before final 5× buffer stage |
| 3: VS | Positive supply | Single 3.3V or 5V rail; powers both input and output stages |
| 4: A2 | Buffer input | Accepts filtered or modified A1 signal; input bias current ≤±2pA minimizes loading error |
| 5: OUT | Final output | Single-ended 50×-gained voltage referenced to GND; swing to 2mV above GND / 4.98V below VS |
| 6: GND | Power ground | Reference for all internal circuitry and output; requires low-impedance connection to minimize noise coupling |
| 7: OFFSET | DC offset control | Set to VS/2 for bidirectional operation; enables zero-centered output for AC-coupled current waveforms |
| 8: +IN | Positive input | Connects to high-side of shunt resistor; matched impedance with –IN ensures CMRR integrity |
Key Features
| Feature | Design Value |
|---|---|
| In-line filter capability | A1 and A2 pins expose inter-stage node, allowing designer-inserted RC networks to suppress EMI without degrading input-stage CMRR or offset |
| Chopping-based level-shift input | Enables ultra-low offset (±1mV) and drift (±10μV/°C) while surviving >80V differential fault transients across shunt |
| Bidirectional single-supply operation | OFFSET pin sets output midscale (e.g., 2.5V at 5V supply), enabling accurate measurement of forward/reverse current in battery management |
| High common-mode rejection | 90dB min CMRR up to 10kHz ensures stable gain under PWM noise, eliminating need for external guard traces or shielding |
| Robust input protection | Integrated level-shift resistors prevent latch-up or damage during load-dump or reverse-battery events in automotive and industrial environments |
Applications
| DC/DC Converter Monitoring | Intel Server Power Rail Sensing |
|---|---|
Use Scenario: Real-time current monitoring of multiphase VRMs supplying CPU/GPU cores in 1U servers. IC Role / Device Role / Timing Role: High-accuracy bidirectional shunt amplifier interfacing directly to 48V input and 12V/1V output rails. Use Value: Enables dynamic phase shedding and overcurrent protection with <±0.5% full-scale error across –40°C to +125°C. | Use Scenario: Input current supervision for redundant 48V-to-12V intermediate bus converters in dual-socket Xeon platforms. IC Role / Device Role / Timing Role: Precision current sense element feeding analog inputs of system management controllers (SMCs). Use Value: Maintains ±1mV offset stability over temperature, ensuring accurate power budgeting and thermal derating decisions. |
| Linear Motor Power Stage | Off-Highway Vehicle Battery Management |
Use Scenario: Closed-loop current control in servo-driven hydraulic valve actuators used in construction equipment. IC Role / Device Role / Timing Role: Bidirectional shunt monitor on H-bridge outputs, capturing regenerative braking and motoring currents. Use Value: 60kHz bandwidth captures fast torque transients; –22V to +60V CMR accommodates floating ground architectures. | Use Scenario: State-of-charge and health monitoring in 24V/48V starter-battery and auxiliary power systems of agricultural tractors. IC Role / Device Role / Timing Role: High-reliability current sensor in harsh EMI environments with wide ambient temperature swings. Use Value: ±10μV/°C drift ensures <±1.25mV offset shift over –40°C to +125°C, critical for long-term SoH estimation accuracy. |
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 | 80V common-mode range, 20× gain, ±150nA input bias, no A1/A2 inter-stage access | Optimized for high-side sensing in automotive traction inverters; lacks in-line filter flexibility | Select when higher CMV (>60V) is required and external filtering is unnecessary |
| MAX40056ATA+T | 65V common-mode range, 50× gain, ±10μV/°C drift, 100kHz bandwidth, no inter-stage pins | Designed for fast-switching GaN-based converters; higher bandwidth but no configurable gain/filter path | Select when >60kHz response is mandatory and board space permits larger SOIC-8 package |
Compared with INA240A1QDRQ1 and MAX40056ATA+T, the LMP8602QMMX/NOPB uniquely provides accessible A1/A2 nodes for custom filtering, maintains identical 50× gain and drift spec, and offers superior design flexibility for noise-prone industrial power systems - without requiring layout changes or additional components for basic operation.
Availability
LMP8602QMMX/NOPB is available at Aetrix Electronics and suitable for DC/DC converter monitoring, Intel server power rail sensing, linear motor power stage control, and off-highway vehicle battery management requiring stable component supply across extended temperature and high-reliability production cycles.
Supply support for LMP8602QMMX/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 family was designed specifically for precision bidirectional current sensing in high-common-mode, high-noise environments - targeting server power, motor control, and ruggedized vehicle electronics where offset stability and fault robustness are non-negotiable.
FAQ
What is the maximum common-mode input voltage supported by the LMP8602QMMX/NOPB?
The LMP8602QMMX/NOPB supports a common-mode input voltage range of –22V to +60V when operating from a 5V supply, and –4V to +27V at 3.3V supply. This allows direct connection to 48V bus rails and negative return paths in industrial and automotive systems without external level-shifting circuitry.
How does the A1 and A2 pin interface enable signal conditioning in the LMP8602QMMX/NOPB?
The A1 pin delivers the 10×-gained preamplifier output, and A2 serves as the input to the 5× output buffer. By inserting an RC network between A1 and A2, designers can add low-pass filtering to suppress high-frequency noise - such as switching ripple from DC/DC converters - while preserving the input stage's high CMRR and low offset performance in the LMP8602QMMX/NOPB.
Can the LMP8602QMMX/NOPB be used for bidirectional current sensing with a single 5V supply?
Yes. The LMP8602QMMX/NOPB supports true bidirectional sensing using its dedicated OFFSET pin. When biased to 2.5V (VS/2), the output centers at 2.5V - enabling positive current to produce output voltages above 2.5V and negative current to produce voltages below 2.5V - all from a single 5V rail without split supplies or external op-amps.
What is the typical supply current consumption of the LMP8602QMMX/NOPB at 5V operation?
The LMP8602QMMX/NOPB draws 1.1mA typical supply current at 5V, with a guaranteed maximum of 1.5mA over the full –40°C to +125°C temperature range. This low quiescent current supports always-on monitoring in energy-sensitive applications like server power management and battery-powered test equipment.
Does the LMP8602QMMX/NOPB require external compensation capacitors for stability?
No. The LMP8602QMMX/NOPB is internally compensated and stable driving capacitive loads up to 100pF without external components. Its 60kHz bandwidth and 0.83V/µs slew rate ensure clean step response in typical current-sense applications, as verified in Figures 5-20 through 5-25 of the official datasheet.
LMP8602QMMX/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
LMP8602QMMX/NOPB FAQ
1.How can I place an order for LMP8602QMMX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP8602QMMX/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 LMP8602QMMX/NOPB reliable?
The price and inventory of LMP8602QMMX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP8602QMMX/NOPB is usually 5 days.
3.What payment methods are accepted for LMP8602QMMX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP8602QMMX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP8602QMMX/NOPB?
LMP8602QMMX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP8602QMMX/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 LMP8602QMMX/NOPB?
For technical support, including LMP8602QMMX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP8602QMMX/NOPB requirements.
6.How does Aetrix verify that LMP8602QMMX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMP8602QMMX/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 LMP8602QMMX/NOPB meets industry standards.
7.What is the process for return or replacement of LMP8602QMMX/NOPB?
All LMP8602QMMX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMP8602QMMX/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 LMP8602QMMX/NOPB part is unused and in its original packaging.
Return procedure for LMP8602QMMX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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