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Analog Devices Inc. LTC6102CMS8#PBF
- Part No.:
- LTC6102CMS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC6102CMS8#PBF.pdf
- Description:
- IC CURRENT SENSE 1 CIRCUIT 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,438
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Product details
Overview
LTC6102CMS8#PBF from Analog Devices (formerly Linear Technology) is a precision zero-drift high-side current sense amplifier in an 8-lead MSOP package. It operates from 4V to 60V supply, delivers ±10µV max input offset and ±50nV/°C drift, and provides 1µs step response for real-time load monitoring in battery management and industrial power systems.
For engineers reviewing the LTC6102CMS8#PBF datasheet, LTC6102CMS8#PBF pinout, LTC6102CMS8#PBF application, or LTC6102CMS8#PBF equivalent, key selection criteria include its ground-referred current-output architecture, gain configurability via external RIN/ROUT, low-power disable mode (LTC6102-1 variants), and compatibility with shunt resistors down to 1mΩ for sub-mA resolution at high currents.
Technical Context
The LTC6102CMS8#PBF implements a precision current-output transconductance amplifier with internal feedback forcing –INS to match +IN potential. Its architecture converts differential sense voltage (VSENSE = V+IN – V–INS) into a proportional output current IOUT = VSENSE/RIN, referenced to V–, enabling accurate level-shifting from high common-mode voltages up to 60V.
It features a Kelvin-connected input structure with separate –INF (force) and –INS (sense) pins, minimizing parasitic resistance errors in high-current paths. The device supports configurable gain (200–4990) via external RIN and ROUT, maintains 130dB PSRR, and achieves 140kHz signal bandwidth at 200µA output load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | 4V to 60V - supports direct connection to 12V/24V/48V industrial and automotive bus rails without external regulators. |
| Input Offset Voltage | ±10µV max - enables use of 1mΩ shunts for 10mA resolution at 10A full-scale while limiting offset-induced error to ≤0.1%. |
| Offset Drift | ±50nV/°C max - ensures <1µV total drift over –40°C to 85°C operating range, critical for stable battery SOC estimation. |
| Step Response | 1µs - allows detection of fast overcurrent events (e.g., motor stall, short-circuit) before damage occurs. |
| PSRR | 130dB min - rejects supply noise from switching regulators, preserving measurement integrity in noisy power environments. |
| Output Current | Up to 1mA - drives standard 10kΩ load resistors to generate 0–10V output signals compatible with most ADC inputs. |
| Operating Temp | 0°C to 70°C - specified temperature grade for commercial-grade industrial control and power supply applications. |
Pinout & Package
Package: 8-lead plastic MSOP (3mm × 3mm footprint, 0.65mm pitch), exposed pad not present (DFN variant only). Thermal resistance θJA = 200°C/W.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (–INS) | Inverting input sense node | Kelvin-sense return; must be tied directly to shunt low-side terminal to avoid trace resistance error. |
| 2 (–INF) | Force input | Carries VSENSE/RIN current; connect RIN from V+ to this pin to set transconductance gain. |
| 3 (V–) | Negative supply | Ground reference for output current and internal circuitry; also serves as return for ROUT. |
| 4 (OUT) | Open-drain current output | Sinks IOUT = VSENSE/RIN; requires external ROUT to V– to generate voltage output VOUT = IOUT × ROUT. |
| 5 (V–) | Negative supply (duplicate) | Second V– connection for improved grounding; must be connected to same net as Pin 3. |
| 6 (VREG) | Internal regulated supply | Provides stable bias for internal circuitry; requires 0.1µF bypass capacitor to V+ (not for external loading). |
| 7 (V+) | Positive supply | Primary power input; draws 275–475µA quiescent current depending on supply voltage. |
| 8 (+IN) | Noninverting input | Connects to shunt high-side terminal; includes 5kΩ series resistor for transient protection and accidental open-circuit tolerance. |
Key Features
| Feature | Design Value |
|---|---|
| Precision zero-drift architecture | Enables stable DC current measurement over temperature and time without calibration, critical for battery coulomb counting. |
| Kelvin input configuration | Separates force (–INF) and sense (–INS) paths to eliminate PCB trace resistance error, supporting accuracy <0.5% at 100A. |
| Configurable transconductance gain | RIN selection sets IOUT scaling (e.g., 10Ω → 100mA/V); eliminates need for precision op-amp gain stages. |
| High common-mode rejection | 130dB PSRR and >100dB CMRR ensure immunity to supply ripple and ground bounce in motor drive inverters. |
| Fast overload response | 1µs step response allows integration into hardware-based overcurrent shutdown loops with <2µs total latency. |
Applications
| Current Shunt Measurement | Battery Monitoring |
|---|---|
Use Scenario: Real-time measurement of charge/discharge current in 48V Li-ion battery packs for UPS and energy storage systems. IC Role / Device Role / Timing Role: High-side current sense amplifier converting mV-level shunt voltage to ground-referred analog output for MCU ADC sampling. Use Value: ±10µV offset enables 1mΩ shunt use, reducing power loss to 100mW at 10A while maintaining 10mA resolution for precise SOC calculation. | Use Scenario: Monitoring cell-level current in multi-cell EV battery modules during regenerative braking and fast charging. IC Role / Device Role / Timing Role: Precision current transducer interfacing between isolated shunt and isolated ADC, rejecting common-mode noise from high-dv/dt inverters. Use Value: 1µs response captures transient current spikes during IGBT switching, enabling active cell balancing and fault detection within 5µs. |
| Load Protection | Motor Control |
Use Scenario: Overcurrent detection in industrial 24V DC solenoid drivers and PLC output modules. IC Role / Device Role / Timing Role: Fast-response current monitor feeding hardware comparator for immediate MOSFET gate shutdown on fault. Use Value: 1µs propagation delay ensures MOSFET turn-off before peak fault current exceeds SOA limits, preventing device destruction. | Use Scenario: Phase current sensing in BLDC motor controllers using low-value shunts (<2mΩ) to minimize heating in high-current windings. IC Role / Device Role / Timing Role: High-bandwidth current amplifier providing clean analog feedback to motor control MCU for FOC algorithms. Use Value: 140kHz bandwidth supports 20kHz PWM carrier frequency sampling with <1% phase error, improving torque ripple suppression. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side current sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA240A1QDGKRQ1 | Fixed gain (20V/V), voltage output, AEC-Q100 qualified, 2.7V–5.5V supply only | Automotive-grade; requires external supply regulation for >5.5V bus; no RIN/ROUT flexibility | Select for automotive production where qualification and fixed-gain simplicity outweigh programmability needs. |
| MAX4080TASA+ | Voltage output, 100V supply max, ±100µV offset, 10µs response, SO8 package | Higher voltage rating but slower response and higher offset limit resolution with low-value shunts | Select when 100V operation is required and 10µs response is acceptable for overcurrent warning (not shutdown). |
Compared with INA240A1QDGKRQ1 and MAX4080TASA+, the LTC6102CMS8#PBF offers superior DC precision (10× lower offset), faster fault response (10× quicker), and full gain configurability-making it optimal for high-resolution industrial power monitoring where layout-controlled Kelvin routing is feasible.
Availability
LTC6102CMS8#PBF is available at Aetrix Electronics and suitable for battery management systems, industrial motor drives, and 48V DC power distribution requiring stable component supply across commercial temperature grades.
Supply support for LTC6102CMS8#PBF 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
Analog Devices acquired Linear Technology in 2017 and maintains its precision analog portfolio, including high-performance current sensing, power management, and signal conditioning ICs.
The LTC6102 product line was designed for high-accuracy, high-voltage, high-side current sensing in demanding industrial, automotive, and energy storage applications where offset drift and common-mode rejection are critical.
FAQ
What is the maximum common-mode voltage the LTC6102CMS8#PBF can handle?
The LTC6102CMS8#PBF supports a total supply voltage (V+ to V–) up to 70V absolute maximum, with input pins rated for operation up to V+ – 20V on +IN and V+ – 4V on –INF/–INS. This enables reliable high-side sensing on 48V and 60V bus systems. The LTC6102CMS8#PBF is not rated for 100V operation-that capability belongs to the LTC6102HV variant.
Does the LTC6102CMS8#PBF include a disable function?
No, the LTC6102CMS8#PBF does not include a disable function. That feature is exclusive to the LTC6102-1 variant (e.g., LTC6102CMS8-1#PBF), which adds an EN pin for low-power standby mode drawing ≤1µA. The LTC6102CMS8#PBF operates continuously whenever powered within its supply range.
Can the LTC6102CMS8#PBF drive a 10kΩ load resistor directly?
Yes, the LTC6102CMS8#PBF can drive a 10kΩ load resistor connected between OUT and V–. With its 1mA maximum output current, it delivers up to 10V output swing (1mA × 10kΩ), fully compatible with standard 0–10V ADC inputs. For higher loads, verify output compliance voltage versus supply per the datasheet's VOUT vs temperature curves.
What shunt resistor value is recommended for measuring 0–50A with the LTC6102CMS8#PBF?
For 0–50A full-scale with 10mV resolution (0.02% of FS), a 200µΩ shunt yields 10mV at 50A and keeps VSENSE well within the 2V maximum. Combined with RIN = 20Ω and ROUT = 10kΩ, this gives gain = 500 and 5V output at full scale. The LTC6102CMS8#PBF's low offset ensures <0.05A error at zero current, meeting typical industrial accuracy requirements.
Is the LTC6102CMS8#PBF RoHS compliant and lead-free?
Yes, the LTC6102CMS8#PBF is RoHS compliant and features a lead-free finish, as indicated by the "#PBF" suffix in its part number. It meets JEDEC J-STD-020 moisture sensitivity level 1 and is qualified for standard reflow soldering profiles. The marking "LTCKJ" on the top surface confirms this specific MSOP package variant.
LTC6102CMS8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Current Sense
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- -
- Gain Bandwidth Product:
- 200 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 60 pA
- Voltage - Input Offset:
- 3 µV
- Current - Supply:
- 420µA
- Current - Output / Channel:
- 1 mA
- Voltage - Supply Span (Min):
- 4 V
- Voltage - Supply Span (Max):
- 60 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
LTC6102CMS8#PBF FAQ
1.How can I place an order for LTC6102CMS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6102CMS8#PBF 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 LTC6102CMS8#PBF reliable?
The price and inventory of LTC6102CMS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6102CMS8#PBF is usually 5 days.
3.What payment methods are accepted for LTC6102CMS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6102CMS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6102CMS8#PBF?
LTC6102CMS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6102CMS8#PBF 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 LTC6102CMS8#PBF?
For technical support, including LTC6102CMS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6102CMS8#PBF requirements.
6.How does Aetrix verify that LTC6102CMS8#PBF is sourced from the original manufacturer or authorized distributors?
All LTC6102CMS8#PBF 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 LTC6102CMS8#PBF meets industry standards.
7.What is the process for return or replacement of LTC6102CMS8#PBF?
All LTC6102CMS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6102CMS8#PBF, 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 LTC6102CMS8#PBF part is unused and in its original packaging.
Return procedure for LTC6102CMS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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