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Analog Devices Inc. LTC6102HVCMS8#PBF
- Part No.:
- LTC6102HVCMS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC6102HVCMS8#PBF.pdf
- Description:
- IC CURRENT SENSE 1 CIRCUIT 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,729
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Product details
Overview
LTC6102HVCMS8#PBF from Analog Devices (formerly Linear Technology) is a precision zero-drift high-side current sense amplifier in an 8-lead MSOP package, rated for 5V to 100V supply operation and –40°C to 85°C temperature range. It delivers ±10µV max input offset, ±50nV/°C drift, 1µs step response, and supports configurable gain via external RIN/ROUT resistors. It enables accurate battery monitoring and load protection in industrial power systems with up to 2V full-scale sense voltage.
For engineers reviewing the LTC6102HVCMS8#PBF datasheet, LTC6102HVCMS8#PBF pinout, LTC6102HVCMS8#PBF application, or LTC6102HVCMS8#PBF equivalent, key selection criteria include high-voltage common-mode rejection (130dB PSRR), low-power operation (650µA max supply current), Kelvin-compatible shunt interface, and compatibility with sub-milliohm sense resistors for minimal power loss in high-current (>100A) systems.
Technical Context
The LTC6102HVCMS8#PBF implements a precision current-to-current transducer architecture: its internal sense amplifier forces –INS to track +IN, enabling accurate sensing across large common-mode voltages. Input voltage is converted to proportional output current (IOUT = VSENSE/RIN), which flows through an external ROUT to generate a ground-referred output voltage (VOUT = IOUT × ROUT).
This architecture decouples gain setting from common-mode voltage constraints and eliminates errors from op-amp input bias current. The device uses auto-zeroing circuitry to achieve ultra-low offset and drift, while its open-drain output and internal regulated VREG rail support stable operation under varying supply conditions up to 100V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 5V to 100V - supports direct connection to high-voltage bus rails (e.g., 48V telecom, 72V EV auxiliary, 96V industrial DC) without external level-shifting. |
| Input Offset Voltage | ±10µV max - enables use of 1mΩ shunts at 1mA minimum detectable current with <1% offset error. |
| Offset Drift | ±50nV/°C max - ensures stable accuracy over wide ambient temperature swings in uncooled enclosures. |
| Step Response Time | 1µs - allows real-time detection of fast overcurrent events for immediate load disconnect or fault flag assertion. |
| PSRR | 130dB min - rejects supply ripple and noise on high-voltage rails, preserving measurement integrity in noisy power environments. |
| Max Sense Voltage | 2V - accommodates wide dynamic current ranges (e.g., 10A–1000A) with appropriate shunt selection while maintaining <1% error. |
| Operating Temp | –40°C to +85°C - qualified for industrial and automotive under-hood applications where extended thermal range is required. |
Pinout & Package
Package: 8-lead plastic MSOP (3mm × 3mm footprint, 0.65mm pitch), RoHS-compliant lead-free finish (PBF), exposed pad not present (DFN variant has exposed pad; MSOP does not).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (–INS) | Inverting Input | Internally forced to match +IN potential; connects to low-side of shunt resistor in Kelvin configuration to reject trace resistance errors. |
| 2 (–INF) | Force Input | Carries input current from RIN; must be tied directly to –INS near RIN to minimize parasitic resistance and ensure accurate transconductance. |
| 3 (V–) | Negative Supply | Ground reference for all analog circuitry and output stage; also serves as return path for ROUT and load current measurement loop. |
| 4 (OUT) | Open-Drain Current Output | Sources current proportional to VSENSE; requires external pull-down (ROUT) to V– to generate voltage output; supports bidirectional current sensing when combined with external circuitry. |
| 5 (+IN) | Noninverting Input | Connects to high-side of shunt; includes 5kΩ series resistor for transient protection and tolerance to accidental disconnection or overvoltage (up to 60V below –INS for 1s). |
| 6 (VREG) | Internal Regulated Supply | Stable ~3.3V rail for internal circuitry; requires 0.1µF bypass capacitor to V+; not intended to drive external loads. |
| 7 (V+) | Positive Supply | High-voltage input rail (5–100V); supplies all internal circuitry and provides reference for RIN connection; draws quiescent current up to 650µA. |
| 8 (NC) | No Connect | Not internally bonded; left unconnected per datasheet - no routing or grounding required. |
Key Features
| Feature | Design Value |
|---|---|
| Kelvin-input architecture | Separates high-current shunt paths from precision sense traces, reducing measurement error from PCB copper resistance to <0.1% even at 100A. |
| Configurable transconductance gain | Gain set by RIN only (IOUT = VSENSE/RIN); eliminates gain dependency on common-mode voltage or supply variation. |
| Ultra-low input bias current | 3nA max - prevents voltage drop across high-value RIN resistors, enabling gains up to 5000× without significant error. |
| Integrated VREG rail | On-chip regulated supply ensures consistent amplifier performance across full 5–100V input range, eliminating need for external LDO. |
| High common-mode rejection | 130dB PSRR and ability to operate with +IN up to 20V below –INS indefinitely - supports robust sensing in electrically noisy high-side locations. |
Applications
| Battery Management Systems | Industrial Motor Drives |
|---|---|
|
Use Scenario: Real-time monitoring of charge/discharge current in 48V lithium-ion battery packs for UPS and energy storage. IC Role / Device Role / Timing Role: High-side current transducer converting shunt voltage to ground-referred analog output for ADC sampling. Use Value: Enables sub-1% current accuracy over –40°C to 85°C using 0.5mΩ shunt, reducing power loss to <500mW at 100A while supporting fast fault detection (<1µs). |
Use Scenario: Phase current sensing in three-phase 7.5kW AC induction motor drives operating from 400VDC bus. IC Role / Device Role / Timing Role: Isolated high-side current amplifier feeding isolated sigma-delta ADC inputs. Use Value: Delivers 1µs response and ±10µV offset to resolve torque ripple harmonics and enable field-oriented control with <0.5% current loop error. |
| Telecom Power Distribution | Automotive 48V Mild Hybrid Systems |
|
Use Scenario: Load current supervision in 54V intermediate bus converters supplying server racks and optical line cards. IC Role / Device Role / Timing Role: Primary current monitor for OCP and derating logic in digital PMBus-controlled DC/DC modules. Use Value: Supports 2V full-scale sense range to accommodate both steady-state (10A) and surge (100A) currents with single shunt, eliminating dual-range switching complexity. |
Use Scenario: Starter-generator current measurement in 48V belt-driven starter-generator (BISG) systems for torque assist and regenerative braking. IC Role / Device Role / Timing Role: High-voltage, AEC-Q200–compatible current sensor interfacing to vehicle MCU via analog input. Use Value: Qualified for –40°C to 85°C operation and withstands load dump transients up to 105V, meeting ISO 16750-2 requirements without external protection. |
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 | Lower supply range (2.7–80V), higher offset (±20µV), integrated RIN, fixed gain (20V/V), no VREG rail. | Requires external VREF for bipolar sensing; less flexible gain tuning; better suited for cost-sensitive, lower-voltage (<60V) automotive applications. | Select when fixed-gain, AEC-Q200–qualified solution is preferred and supply stays below 80V; avoid if >2V sense range or ultra-low offset is required. |
| MAX40056ATA+T | Higher supply range (4.5–100V), similar offset (±12µV), rail-to-rail output, no internal VREG, higher quiescent current (1.1mA). | Delivers voltage output directly (no ROUT needed); lacks Kelvin force-sense architecture; more sensitive to PCB layout parasitics. | Select when voltage-output interface simplifies system design and layout constraints allow non-Kelvin routing; avoid for ultra-high-accuracy >100A sensing. |
Compared with INA240A1QDGKRQ1 and MAX40056ATA+T, the LTC6102HVCMS8#PBF offers superior offset stability (±10µV vs ±12–20µV), true Kelvin force-sense capability for <0.1% trace-error immunity, and integrated VREG for supply-independent performance - making it optimal for precision, high-voltage, high-current industrial monitoring where layout margin and long-term calibration stability are critical.
Availability
LTC6102HVCMS8#PBF is available at Aetrix Electronics and suitable for battery management systems, industrial motor drives, and telecom power distribution requiring stable component supply across extended temperature and high-voltage operating conditions.
Supply support for LTC6102HVCMS8#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, Inc. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC6102 family was designed by Linear Technology specifically for precision high-side current sensing in harsh, high-voltage environments - emphasizing ultra-low offset, wide common-mode range, and Kelvin-input robustness for mission-critical power monitoring.
FAQ
What is the maximum common-mode voltage the LTC6102HVCMS8#PBF can handle?
The LTC6102HVCMS8#PBF supports a total supply voltage up to 105V absolute maximum, with +IN rated from (V+ – 20V) to (V+ + 1V). Its differential input rating is 60V for 1 second. This enables reliable operation with common-mode voltages up to 100V on the V+ rail while sensing across shunts referenced to that rail - ideal for 48V, 72V, and 96V industrial and automotive systems. The LTC6102HVCMS8#PBF maintains full functionality within its 5V–100V operating range.
Can the LTC6102HVCMS8#PBF measure bidirectional current?
The LTC6102HVCMS8#PBF is inherently unidirectional: it amplifies the voltage across a shunt resistor with polarity defined by +IN (high-side) and –INS (low-side). To measure bidirectional current, external circuitry such as an op-amp level shifter or a second LTC6102HVCMS8#PBF configured in complementary topology is required. The LTC6102HVCMS8#PBF itself does not support reverse current detection natively, as its output is open-drain and referenced to V–.
What is the purpose of the VREG pin on the LTC6102HVCMS8#PBF?
The VREG pin on the LTC6102HVCMS8#PBF provides an internally regulated ~3.3V supply for the device's core analog circuitry. It must be bypassed with a minimum 0.1µF capacitor to V+, but it is not intended to power external components. This dedicated rail ensures stable amplifier performance independent of V+ fluctuations between 5V and 100V - a key enabler of the LTC6102HVCMS8#PBF's high PSRR and consistent offset behavior across its full operating range.
How does the LTC6102HVCMS8#PBF achieve its ±10µV input offset specification?
The LTC6102HVCMS8#PBF achieves ±10µV max input offset using auto-zeroing (chopper-stabilized) architecture with precision trimming during wafer test. This technique continuously corrects for amplifier input-stage mismatches and low-frequency drift. Unlike conventional op-amps, this architecture maintains nanovolt-level stability over time and temperature - confirmed by the ±50nV/°C max drift spec. The LTC6102HVCMS8#PBF's offset is guaranteed by design and verified via high-speed automated testing per datasheet Note 4.
Is the LTC6102HVCMS8#PBF pin-compatible with other variants in the LTC6102 family?
Yes - all LTC6102 variants in the MSOP-8 package (including LTC6102CMS8#PBF, LTC6102IMS8#PBF, LTC6102HMS8#PBF, and LTC6102HVIMS8#PBF) share identical pinout and footprint. The LTC6102HVCMS8#PBF differs only in temperature grade (–40°C to +85°C) and HV rating (5–100V), not in pin function or mechanical layout. This allows direct substitution in existing designs when upgrading to higher voltage or wider temperature operation, provided system-level validation confirms performance margins.
LTC6102HVCMS8#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):
- 5 V
- Voltage - Supply Span (Max):
- 100 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
LTC6102HVCMS8#PBF FAQ
1.How can I place an order for LTC6102HVCMS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6102HVCMS8#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 LTC6102HVCMS8#PBF reliable?
The price and inventory of LTC6102HVCMS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6102HVCMS8#PBF is usually 5 days.
3.What payment methods are accepted for LTC6102HVCMS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6102HVCMS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6102HVCMS8#PBF?
LTC6102HVCMS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6102HVCMS8#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 LTC6102HVCMS8#PBF?
For technical support, including LTC6102HVCMS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6102HVCMS8#PBF requirements.
6.How does Aetrix verify that LTC6102HVCMS8#PBF is sourced from the original manufacturer or authorized distributors?
All LTC6102HVCMS8#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 LTC6102HVCMS8#PBF meets industry standards.
7.What is the process for return or replacement of LTC6102HVCMS8#PBF?
All LTC6102HVCMS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6102HVCMS8#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 LTC6102HVCMS8#PBF part is unused and in its original packaging.
Return procedure for LTC6102HVCMS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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