My Inquiry
My Account
Analog Devices Inc. LTC6103IMS8#PBF
- Part No.:
- LTC6103IMS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC6103IMS8#PBF.pdf
- Description:
- IC CURRENT SENSE 2 CIRCUIT 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:557
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC6103IMS8#PBF from Analog Devices (formerly Linear Technology) is a dual high-side current sense amplifier designed for precision monitoring of load currents in high-voltage systems. It features two independent amplifiers sharing only the V– terminal, 450 µV max input offset voltage, 1 µs response time, and operation from 4 V to 60 V supply - enabling accurate shunt-based current measurement in automotive battery management and industrial power supplies.
For engineers reviewing the LTC6103IMS8#PBF datasheet, LTC6103IMS8#PBF pinout, LTC6103IMS8#PBF application, or LTC6103IMS8#PBF equivalent, key selection criteria include common-mode voltage range (up to 70 V), output current sourcing capability (1 mA max per channel), temperature grade (–40°C to 125°C), and MS8 package compatibility with high-density PCB layouts.
Technical Context
The LTC6103IMS8#PBF implements a transconductance architecture: each amplifier forces its –IN pin to match the +IN potential, converting the differential sense voltage (VSENSE) across an external shunt into a proportional output current (IOUT = VSENSE/RIN). This current-source output enables ground-referenced voltage translation via an external ROUT resistor.
Its dual-channel design supports independent gain configuration per channel using separate RIN resistors, while sharing V– for simplified biasing. The device achieves 110 dB minimum PSRR (6 V–60 V) and ±1.5 µV/°C offset drift, ensuring stable performance across wide supply and temperature ranges without requiring matched external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | 4 V to 60 V - supports direct connection to 12 V, 24 V, 48 V, and 60 V bus rails without level-shifting circuitry. |
| Input Offset Voltage | ±450 µV max - enables use of low-value shunts (e.g., 5 mΩ) while maintaining <2% error at 10 mA load current. |
| Response Time | 1 µs - suitable for overcurrent warning and fast shutdown in motor drives and DC-DC converters. |
| Output Current | 1 mA max per channel - sets practical upper limit for ROUT selection to avoid exceeding 8 V output swing. |
| PSRR | 110 dB min (6 V–60 V) - rejects supply ripple-induced errors in noisy high-power environments. |
| Operating Temp | –40°C to 125°C - qualified for under-hood automotive and industrial control applications. |
| Package | 8-lead MSOP - 3 mm × 3 mm footprint with exposed pad for thermal dissipation in compact power modules. |
Pinout & Package
The LTC6103IMS8#PBF is housed in an 8-lead plastic MSOP package (θJA = 300°C/W, TJMAX = 150°C) with exposed pad for thermal enhancement. Pin 3 is NC; all other pins are electrically active and validated per Linear Technology's official datasheet revision 6103f.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUTA (Pin 1) | Current output of Amplifier A | Sources IOUTA = VSENSE,A/RIN,A; requires external ROUT to ground for voltage conversion. |
| OUTB (Pin 2) | Current output of Amplifier B | Sources IOUTB = VSENSE,B/RIN,B; fully independent of OUTA except shared V– reference. |
| NC (Pin 3) | No connect | Not internally bonded; must remain unconnected on PCB. |
| V– (Pin 4) | Common negative supply / ground reference | Shared return path for both amplifiers; routing must minimize impedance to avoid crosstalk. |
| +INB/VSB (Pin 5) | Positive input & supply for Amplifier B | Connects to high-side shunt terminal; supplies amplifier B; carries system load current ILOAD,B. |
| –INB (Pin 6) | Negative input of Amplifier B | Driven to same potential as +INB; RIN,B from VSB to –INB sets transconductance gain. |
| –INA (Pin 7) | Negative input of Amplifier A | Driven to same potential as +INA; RIN,A from VSA to –INA sets transconductance gain. |
| +INA/VSA (Pin 8) | Positive input & supply for Amplifier A | Connects to high-side shunt terminal; supplies amplifier A; carries system load current ILOAD,A. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent amplifiers | Enables simultaneous monitoring of two separate high-side current paths (e.g., bidirectional H-bridge legs) with no shared signal path beyond V–. |
| High common-mode voltage support | 70 V absolute maximum (+IN to V–) allows direct sensing on 48 V and 60 V buses without attenuators or isolators. |
| Low quiescent current | 275 µA per amplifier at 12 V - reduces system standby power in battery-powered telemetry and remote sensors. |
| Kelvin-compatible inputs | +IN/–IN pin pairs support 4-wire shunt connections to eliminate PCB trace resistance errors in precision measurements. |
| Configurable gain via external RIN | Transconductance gm = 1/RIN allows precise scaling (e.g., 100 µA/mV with 10 kΩ) without trimming or calibration. |
Applications
| Automotive Battery Monitoring | Industrial Power Supply OCP |
|---|---|
|
Use Scenario: Real-time monitoring of 12 V/48 V battery pack charge/discharge current in EV auxiliary systems. IC Role / Device Role / Timing Role: High-side current sense amplifier translating shunt voltage to ground-referenced current-proportional output for MCU ADC sampling. Use Value: ±450 µV offset enables <1% full-scale error down to 50 mA with 10 mΩ shunt, supporting ISO 26262 functional safety diagnostics. |
Use Scenario: Overcurrent protection trigger in 24 V industrial SMPS with fast transient response requirements. IC Role / Device Role / Timing Role: Dual-channel current monitor feeding comparators for independent phase current limiting and fault latching. Use Value: 1 µs response time ensures detection of sub-millisecond short-circuit events before MOSFET destruction. |
| Telecom 48 V DC Distribution | Motor Drive Phase Current Sensing |
|
Use Scenario: Input current supervision of redundant 48 V rectifier modules in telecom rack power systems. IC Role / Device Role / Timing Role: High-side current translator converting shunt voltage to isolated analog signal for system controller. Use Value: 110 dB PSRR suppresses switching noise from adjacent DC-DC converters, improving measurement SNR by >20 dB. |
Use Scenario: Bidirectional current sensing in three-phase inverter leg for field-oriented control (FOC) algorithms. IC Role / Device Role / Timing Role: Dual amplifier used for simultaneous high-side and low-side current feedback in H-bridge topology. Use Value: Independent RIN configuration per channel allows optimized gain for forward/reverse current ranges without hardware change. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual high-side current sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA240A1QDGKRQ1 | Voltage-output architecture (not current-output); 120 V common-mode range; higher offset (±20 µV typ, ±150 µV max). | Better suited for single-supply 3.3 V/5 V microcontroller interfaces; lacks native current-source flexibility for remote ROUT placement. | Select when interfacing directly to low-voltage SAR ADCs without external op-amps; avoid if ground-referenced current-loop signaling is required. |
| MAX40056ATA+T | Single-channel only; 65 V common-mode; 1.5 µs response; ±125 µV max offset; operates down to 2.7 V supply. | Requires two devices for dual-channel operation; lower supply voltage enables integration with ultra-low-power controllers. | Choose for space-constrained designs where dual-channel integration is not mandatory and sub-3 V operation is needed. |
Compared with INA240A1QDGKRQ1 and MAX40056ATA+T, the LTC6103IMS8#PBF uniquely delivers dual independent current-source outputs in a single MSOP package, enabling flexible gain-setting, remote voltage conversion, and inherent rejection of ground loop errors - critical for high-accuracy multi-rail power systems.
Availability
LTC6103IMS8#PBF is available at Aetrix Electronics and suitable for automotive battery management, industrial power supply overcurrent protection, and telecom 48 V DC distribution requiring stable component supply across extended temperature and voltage ranges.
Supply support for LTC6103IMS8#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 full product support, qualification, and manufacturing continuity for the LTC® family of precision analog ICs.
The LTC6103IMS8#PBF belongs to Linear's high-voltage current sense amplifier product line, engineered specifically for accurate, high-bandwidth, high-common-mode monitoring in automotive, industrial, and energy infrastructure applications.
FAQ
What is the maximum common-mode voltage the LTC6103IMS8#PBF can handle?
The LTC6103IMS8#PBF supports a total supply voltage of up to 70 V between +INA/+INB and V–, making it suitable for direct connection to 48 V and 60 V bus systems. This rating is absolute maximum and applies across the full –40°C to 125°C operating temperature range. Operation above 60 V supply is not recommended for sustained use due to internal power dissipation limits.
Does the LTC6103IMS8#PBF require external resistors to function?
Yes, the LTC6103IMS8#PBF requires two external resistors per channel: RIN (between +IN and –IN) to set transconductance gain (IOUT = VSENSE/RIN), and ROUT (between OUT and V–) to convert output current to voltage (VOUT = IOUT × ROUT). These resistors define full-scale range, accuracy, and bandwidth - no internal gain-setting is provided.
Can the two amplifiers in the LTC6103IMS8#PBF be used for bidirectional current sensing?
Yes - the LTC6103IMS8#PBF's dual independent amplifiers can be configured for bidirectional sensing: one channel monitors high-side current in the forward direction, the other in reverse, using separate shunts or Kelvin-connected dual-shunt topologies. Its current-source outputs allow differential output configurations that reject common-mode ground shifts, as demonstrated in the ±10 A bidirectional H-bridge monitor reference design.
What is the purpose of the NC pin (Pin 3) on the LTC6103IMS8#PBF?
Pin 3 of the LTC6103IMS8#PBF is a no-connect (NC) terminal - it is not bonded internally and serves no electrical function. It must remain unconnected on the PCB layout. Leaving it floating or tying it to ground/V– may introduce parasitic coupling or violate package mechanical integrity; Linear Technology explicitly specifies NC in the official MS8 pinout diagram.
How does the LTC6103IMS8#PBF achieve high PSRR despite wide supply range?
The LTC6103IMS8#PBF achieves ≥110 dB PSRR (6 V–60 V) through proprietary high-voltage input stage design and on-chip regulation of internal bias networks. Unlike conventional op-amps, its transconductance core rejects supply variations by maintaining constant transconductance gain independent of +INA/+INB voltage - verified in Electrical Characteristics Table (PSRR parameter, Note 2).
LTC6103IMS8#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:
- 2
- Output Type:
- -
- Slew Rate:
- -
- Gain Bandwidth Product:
- 140 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 100 nA
- Voltage - Input Offset:
- 600 µV
- Current - Supply:
- -
- 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-MSOP
LTC6103IMS8#PBF FAQ
1.How can I place an order for LTC6103IMS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6103IMS8#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 LTC6103IMS8#PBF reliable?
The price and inventory of LTC6103IMS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6103IMS8#PBF is usually 5 days.
3.What payment methods are accepted for LTC6103IMS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6103IMS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6103IMS8#PBF?
LTC6103IMS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6103IMS8#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 LTC6103IMS8#PBF?
For technical support, including LTC6103IMS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6103IMS8#PBF requirements.
6.How does Aetrix verify that LTC6103IMS8#PBF is sourced from the original manufacturer or authorized distributors?
All LTC6103IMS8#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 LTC6103IMS8#PBF meets industry standards.
7.What is the process for return or replacement of LTC6103IMS8#PBF?
All LTC6103IMS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6103IMS8#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 LTC6103IMS8#PBF part is unused and in its original packaging.
Return procedure for LTC6103IMS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC6103IMS8#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…
