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Analog Devices Inc. LTC6102HVCDD#PBF
- Part No.:
- LTC6102HVCDD#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LTC6102HVCDD#PBF.pdf
- Description:
- IC CURRENT SENSE 1 CIRCUIT 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,301
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Product details
Overview
LTC6102HVCDD#PBF from Analog Devices (formerly Linear Technology) is a precision zero-drift high-side current sense amplifier in an 8-lead 3mm × 3mm DFN package. It operates from 5V to 100V supply, delivers ±10µV max input offset, ±50nV/°C max drift, 1µs step response, and supports up to 2V full-scale sense voltage - enabling accurate battery monitoring and load protection in automotive power systems.
For engineers reviewing the LTC6102HVCDD#PBF datasheet, LTC6102HVCDD#PBF pinout, LTC6102HVCDD#PBF application, or LTC6102HVCDD#PBF equivalent, key selection criteria include high common-mode voltage tolerance (100V), ultra-low offset stability over temperature, open-drain current output architecture, gain configurability via external RIN/ROUT, and specified operation from 0°C to 70°C.
Technical Context
The LTC6102HVCDD#PBF implements a precision current-to-current transducer topology with a feedback-controlled sense amplifier that forces –INS to track +IN potential. Its internal architecture isolates the high-voltage sense node from ground-referred output generation via an open-drain current source referenced to V–.
It uses a Kelvin-connected input structure where –INF carries the RIN-set input current while –INS serves as the high-impedance inverting input node - enabling accurate sensing despite PCB trace resistance. The device requires no external op-amp or level-shifting circuitry for ground-referred output conversion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 5V to 100V - supports direct connection to 48V, 72V, and 96V industrial and automotive battery rails without external regulators. |
| Input Offset Voltage | ±10µV maximum - enables use of sub-milliohm shunts (e.g., 100µΩ) while maintaining <0.1% error at 1A load. |
| Offset Drift | ±50nV/°C maximum - ensures stable accuracy across 0°C to 70°C ambient without recalibration. |
| Step Response Time | 1µs - allows real-time detection of overcurrent events for fast-acting load disconnect or fault flag assertion. |
| Max Sense Voltage | 2V full-scale - accommodates wide dynamic range sensing from µA-level standby currents to >1000A peak loads with appropriate shunt scaling. |
| Output Current | Up to 1mA - sufficient to drive standard 10kΩ load resistors for 0–10V output ranges or ADC reference inputs. |
| PSRR | ≥130dB - rejects supply ripple and noise even under high dV/dt conditions typical in motor drive or SMPS environments. |
Pinout & Package
Package: 8-lead (3mm × 3mm) plastic DFN with exposed pad (Pin 9 = V–), RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| –INS (Pin 1) | Inverting input of internal sense amplifier | High-impedance node forced to match +IN potential; connects directly to low-side of shunt resistor. |
| –INF (Pin 2) | Force input / RIN return | Carries VSENSE/RIN current; must be tied to –INS near RIN to minimize parasitic resistance error. |
| V– (Pin 3) | Negative supply rail | Ground reference for output stage and internal biasing; exposed pad (Pin 9) is electrically connected to this pin. |
| OUT (Pin 4) | Open-drain current output | Sinks current proportional to VSENSE; requires external pull-up resistor (ROUT) to V– or other reference to generate voltage output. |
| V– (Pin 5) | Negative supply rail (duplicate connection) | Second V– bond pad for improved thermal and electrical performance in DFN package. |
| VREG (Pin 6) | Internal regulated supply | Provides stable internal bias; requires ≥0.1µF capacitor to V+ but cannot drive external loads. |
| V+ (Pin 7) | Positive supply input | Accepts 5V–100V high-side rail; supplies all internal circuitry including output stage. |
| +IN (Pin 8) | Noninverting input | Connects to high-side of shunt; includes 5kΩ series resistor for transient protection and tolerates –20V below –INS indefinitely. |
Key Features
| Feature | Design Value |
|---|---|
| Precision zero-drift architecture | Eliminates need for system-level offset calibration over temperature and time, reducing firmware complexity and test cost. |
| Kelvin-input structure with –INF/–INS separation | Enables accurate sensing in high-current PCB layouts by rejecting voltage drop in shunt interconnect traces. |
| Configurable gain via RIN and ROUT | Supports flexible output scaling (e.g., 200× to 4990×) without changing IC - simplifies design reuse across current ranges. |
| 100V absolute max supply rating | Allows direct integration into 48V–96V battery systems without external clamping or regulation, reducing BOM count. |
| 1µs transient response | Meets IEC 61000-4-4 EFT immunity timing requirements and enables cycle-by-cycle overcurrent limiting in motor drives. |
Applications
| Battery Management System (BMS) | Industrial Power Supply Monitoring |
|---|---|
Use Scenario: Real-time cell stack current measurement in 48V lithium-ion battery packs for EV auxiliary systems and energy storage. IC Role / Device Role / Timing Role: High-side current transducer converting mV-level shunt voltage to ground-referred analog output for MCU ADC sampling. Use Value: ±10µV offset enables 0.5% full-scale accuracy at 100A using a 500µΩ shunt, minimizing heat dissipation (<0.5W) and thermal drift. | Use Scenario: Input/output current monitoring in programmable DC power supplies delivering up to 100A. IC Role / Device Role / Timing Role: Primary current sense element feeding analog control loop and digital supervision subsystems. Use Value: 1µs response supports active current limiting during short-circuit events, protecting downstream MOSFETs and magnetics. |
| Automotive Load Protection | Motor Phase Current Sensing |
Use Scenario: Smart fuse replacement in 12V/24V vehicle body control modules for headlight, HVAC blower, and seat actuator circuits. IC Role / Device Role / Timing Role: High-side current monitor interfaced to microcontroller GPIO for overcurrent detection and PWM-controlled shutdown. Use Value: 100V supply rating withstands load-dump transients (ISO 7637-2 Pulse 5a), eliminating need for external TVS diodes. | Use Scenario: Low-side phase current sensing in 3-phase BLDC motor drives for field-oriented control (FOC). IC Role / Device Role / Timing Role: Precision current-to-voltage converter providing isolated analog feedback to motor controller ADC. Use Value: ±50nV/°C drift ensures <0.2% gain error over –40°C to 125°C junction temperature, critical for torque consistency. |
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 |
|---|---|---|---|
| INA240A1QPWRQ1 | Fixed gain (20V/V), 80V max supply, ±50µV offset, SOIC-8 package | Designed for automotive AEC-Q100 Grade 1; lacks programmable gain and 100V rating | Choose for cost-sensitive automotive applications requiring qualification but not ultra-low offset or >80V operation. |
| MAX40056ATA+T | 100V supply, ±12µV offset, 1.5µs response, 8-pin TDFN, no VREG pin | Includes integrated VREF and comparator; optimized for overcurrent trip rather than analog measurement | Choose when digital fault signaling is prioritized over analog output fidelity and flexibility. |
Compared with INA240A1QPWRQ1 and MAX40056ATA+T, the LTC6102HVCDD#PBF provides superior offset performance (±10µV vs ±50µV/±12µV), fully configurable gain, and dedicated VREG pin for internal bias stability - making it optimal for precision analog current measurement in unqualified industrial and telecom systems.
Availability
LTC6102HVCDD#PBF is available at Aetrix Electronics and suitable for battery management systems, industrial power supplies, and automotive load protection requiring stable component supply across extended temperature and voltage ranges.
Supply support for LTC6102HVCDD#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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC6102 product line was developed by Linear Technology (acquired by ADI in 2017) specifically for high-accuracy, high-common-mode-voltage current sensing in harsh environments - emphasizing ultra-low offset, wide supply range, and robust layout-insensitive operation.
FAQ
What is the maximum common-mode voltage the LTC6102HVCDD#PBF can handle?
The LTC6102HVCDD#PBF supports a total supply voltage of up to 105V (absolute maximum), with its input pins rated for operation up to V+ – 20V on +IN and V+ + 0.3V on –INF/–INS. This allows reliable sensing in 48V, 72V, and 96V battery systems, including transient conditions like ISO 7637-2 load dump. The LTC6102HVCDD#PBF is explicitly characterized for 5V to 100V operation per its HV variant specification.
Does the LTC6102HVCDD#PBF include an enable/disable function?
No, the LTC6102HVCDD#PBF does not include an enable/disable function. That feature is exclusive to the LTC6102-1 variants (e.g., LTC6102HVCDD-1#PBF), which add an EN pin (Pin 3) for low-power standby mode. The LTC6102HVCDD#PBF uses Pin 3 as V– and draws continuous quiescent current (650µA typical at 12V). For power-sensitive applications, the -1 version must be selected.
How is gain configured on the LTC6102HVCDD#PBF?
Gain is configured externally using two resistors: RIN between V+ and –INF sets transconductance (IOUT = VSENSE/RIN), and ROUT between OUT and V– converts output current to voltage (VOUT = IOUT × ROUT). The effective gain is VOUT/VSENSE = ROUT/RIN. Common configurations include 20Ω/10kΩ (500×) or 10Ω/10kΩ (1000×), as documented in the Applications Information section of the LTC6102HVCDD#PBF datasheet.
What is the purpose of the VREG pin on the LTC6102HVCDD#PBF?
The VREG pin (Pin 6) provides an internally regulated supply voltage used for biasing sensitive analog circuitry within the LTC6102HVCDD#PBF. It must be decoupled with ≥0.1µF capacitor to V+, but cannot drive external loads. This dedicated regulator improves PSRR and reduces sensitivity to V+ ripple - a key factor in maintaining ±10µV offset accuracy. Unlike many current sense amplifiers, the LTC6102HVCDD#PBF does not derive all internal references from V+, enhancing measurement stability.
Can the LTC6102HVCDD#PBF be used with a 100µΩ shunt resistor?
Yes, the LTC6102HVCDD#PBF is specifically designed for ultra-low-value shunts. With ±10µV max input offset, a 100µΩ shunt yields only 0.1A equivalent offset error - enabling accurate measurement of 10A–1000A currents while keeping shunt dissipation below 1W. The device's Kelvin-input structure (separate –INF and –INS pins) and low drift (±50nV/°C) ensure this accuracy remains stable across temperature and layout variations, as confirmed in the Dynamic Range vs Power Dissipation plot (Figure AI01) of the LTC6102HVCDD#PBF datasheet.
LTC6102HVCDD#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- 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-DFN (3x3)
LTC6102HVCDD#PBF FAQ
1.How can I place an order for LTC6102HVCDD#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6102HVCDD#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 LTC6102HVCDD#PBF reliable?
The price and inventory of LTC6102HVCDD#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6102HVCDD#PBF is usually 5 days.
3.What payment methods are accepted for LTC6102HVCDD#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6102HVCDD#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6102HVCDD#PBF?
LTC6102HVCDD#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6102HVCDD#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 LTC6102HVCDD#PBF?
For technical support, including LTC6102HVCDD#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6102HVCDD#PBF requirements.
6.How does Aetrix verify that LTC6102HVCDD#PBF is sourced from the original manufacturer or authorized distributors?
All LTC6102HVCDD#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 LTC6102HVCDD#PBF meets industry standards.
7.What is the process for return or replacement of LTC6102HVCDD#PBF?
All LTC6102HVCDD#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6102HVCDD#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 LTC6102HVCDD#PBF part is unused and in its original packaging.
Return procedure for LTC6102HVCDD#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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