My Inquiry
My Account
Analog Devices Inc. LTC6102IDD#PBF
- Part No.:
- LTC6102IDD#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LTC6102IDD#PBF.pdf
- Description:
- IC CURRENT SENSE 1 CIRCUIT 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:853
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC6102IDD#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, operating from 4V to 60V supply with ±10µV max input offset, ±50nV/°C max drift, and 1µs step response. It enables accurate shunt-based current monitoring in battery management, motor control, and industrial power systems where low-loss sensing and wide common-mode voltage tolerance are critical.
For engineers reviewing the LTC6102IDD#PBF datasheet, LTC6102IDD#PBF pinout, LTC6102IDD#PBF application, or LTC6102IDD#PBF equivalent, key selection criteria include its 8-lead DFN thermal performance (θJA = 43°C/W), –40°C to 85°C operating range, disable mode absence (vs. LTC6102-1 variants), and gain configuration via external RIN/ROUT resistors for scalable current-to-voltage conversion.
Technical Context
The LTC6102IDD#PBF implements a precision current-sense architecture using a high-gain internal amplifier that forces –INS to track +IN, enabling Kelvin-connected shunt measurement. Its transconductance output (IOUT = VSENSE/RIN) translates differential shunt voltage into a ground-referred current, eliminating level-shifting errors across wide common-mode ranges up to V+ – 20V on +IN.
It features a regulated internal VREG rail (decoupled with 0.1µF to V+) for stable biasing, open-drain current output (OUT) compatible with pull-up to V– or other reference, and no enable/disable functionality-distinguishing it from LTC6102-1 variants. Input bias current remains ≤3nA over temperature, supporting high-value RIN configurations without gain error.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | 4V to 60V (70V absolute max); supports 12V–48V industrial and automotive bus monitoring without external regulators. |
| Input Offset Voltage | ±10µV max; enables use of ≤1mΩ shunts at 1A while maintaining <1% error from offset alone. |
| Offset Drift | ±50nV/°C max; ensures <0.5µV total drift over –40°C to 85°C, critical for uncalibrated long-life systems. |
| Step Response | 1µs to 2.5V on 5V step; allows real-time load current warning and fast overcurrent shutdown in power supplies. |
| PSRR | 130dB min; rejects supply ripple even under noisy 48V DC-DC converter conditions. |
| Output Current | Up to 1mA; drives standard 10kΩ gain-setting resistors with minimal voltage drop and thermal drift. |
| Operating Temp | –40°C to 85°C; qualified for extended industrial environments without derating. |
Pinout & Package
Package: 8-lead (3mm × 3mm) plastic DFN with exposed pad (Pin 9) soldered to PCB for thermal dissipation (θJA = 43°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (–INS) | Inverting input of sense amplifier | Internally forced to match +IN potential; must be tied directly to –INF near RIN to minimize parasitic resistance error. |
| 2 (–INF) | Force input / RIN return | Carries IOUT = VSENSE/RIN; connects externally to V+ via RIN to set transconductance gain. |
| 3 (V–) | Negative supply rail | Reference for OUT and internal circuitry; exposed pad (Pin 9) is electrically connected to V– and must be soldered. |
| 4 (OUT) | Open-drain current output | Sources IOUT proportional to VSENSE; requires external pull-up (e.g., to V–) to generate VOUT = IOUT × ROUT. |
| 5 (V–) | Negative supply rail (duplicate) | Second V– connection; improves grounding and reduces impedance in high-current PCB layouts. |
| 6 (VREG) | Internal regulated supply | Stable ~3.3V rail for internal bias; requires 0.1µF decoupling to V+ but must not drive external loads. |
| 7 (V+) | Positive supply input | Primary power input; draws supply current (275–675µA depending on V+ and temp); handles up to 70V transient. |
| 8 (+IN) | Noninverting input | Connects to load 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 | ±10µV offset and ±50nV/°C drift enable sub-milliohm shunt use without calibration in battery fuel gauging. |
| High common-mode input range | +IN accepts signals up to V+ – 20V continuously, allowing direct connection to 48V bus shunts without attenuators. |
| Transconductance output | IOUT = VSENSE/RIN eliminates gain dependency on output loading and simplifies noise filtering with RC networks. |
| Low input bias current | ≤3nA max ensures <0.03% gain error when using 100kΩ RIN, critical for high-resolution 16-bit ADC interfaces. |
| Robust thermal design | DFN package with exposed V– pad achieves θJA = 43°C/W, enabling 500mW dissipation at 85°C ambient without heatsink. |
Applications
| Battery Management System | Motor Drive Protection |
|---|---|
Use Scenario: Monitoring charge/discharge current in 24V–48V Li-ion battery packs for state-of-charge and health estimation. IC Role / Device Role / Timing Role: High-side current sense amplifier converting mV-level shunt voltage to ground-referred analog signal for microcontroller ADC sampling. Use Value: ±10µV offset enables 1mΩ shunt use, reducing power loss to <250mW at 50A while maintaining 10-bit effective resolution. | Use Scenario: Real-time phase current monitoring in 3-phase BLDC motor inverters with 400V DC bus. IC Role / Device Role / Timing Role: High-bandwidth (1µs response) current sensor feeding fast overcurrent protection logic in gate driver ICs. Use Value: 130dB PSRR rejects switching noise from adjacent IGBTs, preventing false trip during PWM commutation. |
| Industrial Power Supply | Automotive ECU Load Monitoring |
Use Scenario: Output current sensing in programmable 0–30V/0–10A lab power supplies with remote sense capability. IC Role / Device Role / Timing Role: Precision transconductance amplifier providing isolated current feedback to DAC-controlled voltage loop. Use Value: 1µs step response supports dynamic load regulation within 10µs, meeting EN61000-3-2 harmonic compliance requirements. | Use Scenario: Monitoring solenoid and injector coil currents in 12V automotive ECUs for diagnostics and short-circuit detection. IC Role / Device Role / Timing Role: High-voltage tolerant current monitor interfacing directly to 12V battery rail with integrated transient protection. Use Value: +IN withstands –20V below –INS indefinitely, surviving load-dump transients up to ISO 7637-2 Pulse 5a without external clamping. |
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 |
|---|---|---|---|
| INA240A1IDR | Fixed gain (20V/V), 80V supply max, ±100nV/°C drift, SOIC-8 package | Requires external gain scaling for sub-10mV sensing; higher drift limits accuracy in wide-temp automotive use | Select when fixed-gain simplicity outweighs need for ultra-low drift and configurable transconductance |
| MAX40056ATA+ | Current-output (no VREG), 65V supply max, ±5µV offset, 10-pin TDFN | No internal regulator simplifies layout but requires external bias; smaller package increases thermal density | Select when board space is constrained and system already provides clean 3.3V bias for internal circuits |
Compared with INA240A1IDR and MAX40056ATA+, the LTC6102IDD#PBF offers superior offset stability (±10µV vs ±50µV typical) and lower drift (±50nV/°C vs ±100nV/°C), making it preferred for uncalibrated, wide-temperature industrial monitoring where shunt loss must be minimized.
Availability
LTC6102IDD#PBF is available at Aetrix Electronics and suitable for battery management, motor control, and industrial power supply designs requiring stable component supply with guaranteed –40°C to 85°C operation and lead-free compliance.
Supply support for LTC6102IDD#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.
The LTC6102 product line was designed specifically for precision high-side current sensing in harsh industrial and automotive environments, emphasizing ultra-low offset, wide supply range, and Kelvin-input robustness for shunt-based measurement.
FAQ
What is the maximum continuous common-mode voltage the LTC6102IDD#PBF can tolerate on its +IN pin?
The LTC6102IDD#PBF +IN pin tolerates voltages up to V+ – 20V continuously. For example, with V+ = 60V, +IN may be held at 40V relative to ground without damage or specification violation. This enables direct connection to high-side shunts on 48V systems without attenuation networks.
Does the LTC6102IDD#PBF include an enable/disable function?
No, the LTC6102IDD#PBF does not include an enable/disable function. Pin 3 is V– (negative supply), not an enable input. The enable feature is exclusive to LTC6102-1 variants (e.g., LTC6102IDD-1#PBF), which use Pin 3 as EN referenced to V–.
What is the purpose of the VREG pin on the LTC6102IDD#PBF, and how should it be decoupled?
The VREG pin provides an internally regulated ~3.3V supply for biasing internal circuitry. It must be decoupled with a minimum 0.1µF ceramic capacitor connected directly to V+. VREG is not intended to power external components and must not be loaded.
Can the LTC6102IDD#PBF drive a 10kΩ load resistor directly from its OUT pin?
Yes, the LTC6102IDD#PBF can drive a 10kΩ load resistor from its open-drain OUT pin when pulled up to V–. With V+ = 12V and VSENSE = 100mV, IOUT = 100mV/RIN; selecting RIN = 100Ω yields 1mA output, generating 10V across 10kΩ - well within the specified 8V max output voltage at 12V supply.
How does the exposed pad (Pin 9) on the LTC6102IDD#PBF DFN package function electrically and thermally?
The exposed pad (Pin 9) is electrically connected to V– and must be soldered to a PCB copper pour for both electrical return and thermal conduction. It reduces θJA from >100°C/W to 43°C/W, enabling reliable operation at 500mW dissipation in still air at 85°C ambient - critical for high-current sensing applications.
LTC6102IDD#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):
- 4 V
- Voltage - Supply Span (Max):
- 60 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (3x3)
LTC6102IDD#PBF FAQ
1.How can I place an order for LTC6102IDD#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6102IDD#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 LTC6102IDD#PBF reliable?
The price and inventory of LTC6102IDD#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6102IDD#PBF is usually 5 days.
3.What payment methods are accepted for LTC6102IDD#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6102IDD#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6102IDD#PBF?
LTC6102IDD#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6102IDD#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 LTC6102IDD#PBF?
For technical support, including LTC6102IDD#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6102IDD#PBF requirements.
6.How does Aetrix verify that LTC6102IDD#PBF is sourced from the original manufacturer or authorized distributors?
All LTC6102IDD#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 LTC6102IDD#PBF meets industry standards.
7.What is the process for return or replacement of LTC6102IDD#PBF?
All LTC6102IDD#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6102IDD#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 LTC6102IDD#PBF part is unused and in its original packaging.
Return procedure for LTC6102IDD#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC6102IDD#PBF Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
