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Analog Devices Inc. LTC6104HMS8#PBF
- Part No.:
- LTC6104HMS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC6104HMS8#PBF.pdf
- Description:
- IC CURRENT SENSE 1 CIRCUIT 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:271
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Product details
Overview
LTC6104HMS8#PBF from Analog Devices (formerly Linear Technology) is a high-voltage, high-side, bi-directional current sense amplifier designed for precision load current monitoring in automotive and industrial power systems. It operates from 4V to 60V supply, delivers ±1mA output current, achieves ±450µV max offset voltage, and responds in 1µs - enabling accurate real-time current measurement across battery management, motor control, and overcurrent protection circuits.
For engineers reviewing the LTC6104HMS8#PBF datasheet, LTC6104HMS8#PBF pinout, LTC6104HMS8#PBF application, or LTC6104HMS8#PBF equivalent, this page provides verified technical context, validated pin functions, confirmed operating parameters across –40°C to 125°C, and two rigorously cross-checked alternative parts for high-side bi-directional sensing with external gain configuration.
Technical Context
The LTC6104HMS8#PBF integrates two independent high-side sense amplifiers (A and B) that activate exclusively based on polarity of the input sense voltage (VSENSE), eliminating internal switching transients. Amplifier A handles positive VSENSE (e.g., charging current), driving current through –INA; Amplifier B handles negative VSENSE (e.g., discharging or reverse current), driving current through –INB and an internal current mirror that inverts polarity at the OUT pin.
Its transconductance architecture uses external RIN resistors (100Ω typical) to set IOUT = VSENSE / RIN, and ROUT + VREF to convert output current to ground-referenced voltage (VOUT = IOUT × ROUT + VREF). PSRR exceeds 110dB across 4V–60V supply range, and input bias current remains ≤170nA - critical for low-error shunt-based measurements with small RSENSE values.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | 4V to 60V - supports wide-input DC systems including 12V/24V/48V automotive and industrial rails. |
| Max Input Sense Voltage | ±500mV - enables use of low-value, low-power-loss shunt resistors (e.g., 50mΩ at ±10A). |
| Offset Voltage (max) | ±450µV at –40°C to 125°C - ensures <±1.7mA error with 50mΩ shunt, preserving dynamic range. |
| Response Time | 1µs (to 50% on 5V step) - suitable for fast overcurrent detection and active load protection. |
| Output Current | ±1mA maximum - sets practical upper limit for ROUT selection and VOUT swing range. |
| PSRR | ≥110dB minimum - rejects supply noise without requiring ultra-stable VS filtering. |
| Operating Temp | –40°C to 125°C - qualified for under-hood automotive and high-temp industrial environments. |
Pinout & Package
The LTC6104HMS8#PBF is housed in an 8-lead MSOP package (JEDEC MO-187AA, 3mm × 3mm, 0.65mm pitch) with exposed pad for thermal enhancement (θJA = 300°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Current output terminal | Sources or sinks proportional current (IOUT = VSENSE/RIN); requires external ROUT + VREF to generate voltage output. |
| 4 - V– | Negative supply / ground reference | Return path for internal amplifiers and output current; must be connected to system ground in single-supply operation. |
| 5 - +INB/VS | Positive input of Amp B & supply input | Accepts high-side voltage up to 60V; supplies current to both internal amplifiers - trace resistance here causes offset error. |
| 6 - –INB | Negative input of Amp B | Driven to match +INB when VSENSE < 0; connects to shunt resistor for reverse-current sensing path. |
| 7 - –INA | Negative input of Amp A | Driven to match +INA when VSENSE > 0; connects to shunt resistor for forward-current sensing path. |
| 8 - +INA | Positive input of Amp A | High-impedance node tied to high-side potential (e.g., battery+ or bus+); forms Kelvin sense pair with –INA. |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional sensing with polarity-selective amplifiers | Eliminates need for external H-bridge or dual-opamp circuitry; automatic direction detection reduces component count and layout complexity. |
| Configurable gain per direction | Independent RIN resistors on –INA and –INB allow asymmetric forward/reverse gain - essential for battery charge/discharge asymmetry. |
| Low quiescent current | 520µA at 12V - enables always-on monitoring in power-sensitive applications like EV battery standby circuits. |
| High PSRR (≥110dB) | Maintains accuracy despite ripple on 12V/48V rails - avoids dedicated LDO for VS, simplifying power tree. |
| Kelvin-compatible input structure | +INA/–INA and +INB/–INB support 4-wire shunt connection - suppresses PCB trace resistance errors even at 10A+ loads. |
Applications
| Battery Management System (BMS) | Industrial Motor Drive Protection |
|---|---|
|
Use Scenario: Monitoring bidirectional current in lithium-ion battery packs during charge, discharge, and regenerative braking. IC Role / Device Role / Timing Role: High-side current sense amplifier translating shunt voltage into ground-referenced analog output for ADC sampling. Use Value: ±450µV offset enables accurate low-current state-of-charge estimation (<100mA) while supporting ±500mV full-scale for 50A peak currents. |
Use Scenario: Real-time load current supervision in 24V/48V BLDC motor controllers with overcurrent shutdown. IC Role / Device Role / Timing Role: Fast-response current monitor feeding comparator or µC interrupt for sub-10µs fault response. Use Value: 1µs step response allows detection of short-circuit events before MOSFET destruction; 60V rating covers back-EMF spikes. |
| Automotive Body Control Module (BCM) | Telecom Power Shelf Monitoring |
|
Use Scenario: Fuseless load monitoring for headlights, HVAC blowers, and seat heaters in 12V vehicle electrical architecture. IC Role / Device Role / Timing Role: High-side current sensor interfacing to microcontroller ADC via ROUT/VREF network. Use Value: –40°C to 125°C rating meets AEC-Q100 Grade 1 requirements; 4V min supply supports cold-crank operation down to 6V battery. |
Use Scenario: Input/output current telemetry in 48V intermediate bus converters and hot-swap controllers. IC Role / Device Role / Timing Role: Bi-directional current transducer providing analog feedback to digital power management ICs. Use Value: ±1mA output drives standard 10kΩ ADC inputs directly; 110dB PSRR rejects switching noise from adjacent DC/DC stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side bi-directional current sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX40056ASA+T | Fixed 50V max supply; ±100µV max offset; integrated VREF; no separate –INB/–INA pins - single gain path. | Limited to ≤50V systems; lacks independent forward/reverse gain tuning; simpler layout but less flexible for asymmetric current ranges. | Choose for cost-sensitive, lower-voltage (≤40V) designs where ±100µV offset justifies trade-off in configurability. |
| INA240A1QDRQ1 | Automotive-grade (AEC-Q100); 80V abs max; ±100µV offset; fixed gain (20V/V, 50V/V, 100V/V); no current-output architecture. | Voltage-output only; no external RIN/ROUT flexibility; higher gain accuracy but no bi-directional polarity-selective amplification. | Prefer when system requires direct voltage output, AEC-Q100 compliance is mandatory, and fixed-gain suffices for unidirectional or symmetric sensing. |
Compared with MAX40056ASA+T and INA240A1QDRQ1, the LTC6104HMS8#PBF uniquely supports independent gain configuration per current direction, operates up to 60V with guaranteed –40°C to 125°C performance, and uses transconductance output for flexible VREF-based level-shifting - making it optimal for asymmetric battery charge/discharge monitoring and high-PSRR industrial power rails.
Availability
LTC6104HMS8#PBF is available at Aetrix Electronics and suitable for battery management systems, industrial motor drive protection, and automotive body control modules requiring stable component supply across extended temperature and high-voltage operating conditions.
Supply support for LTC6104HMS8#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 LTC6104HMS8#PBF belongs to Linear's precision current sense amplifier family, engineered specifically for high-side, bi-directional current monitoring in harsh automotive and industrial environments where supply voltage variation, temperature extremes, and measurement accuracy are critical.
FAQ
What is the absolute maximum supply voltage for the LTC6104HMS8#PBF?
The absolute maximum total supply voltage (+INB to V–) for the LTC6104HMS8#PBF is 70V. Operation beyond this risks permanent damage. The device is rated for continuous operation from 4V to 60V, with guaranteed performance across –40°C to 125°C for the 'H' grade. Always observe derating guidelines in high-temperature ambient conditions to maintain reliability.
How does the LTC6104HMS8#PBF achieve bi-directional sensing without external switches?
The LTC6104HMS8#PBF uses two internal amplifiers (A and B) that activate automatically based on VSENSE polarity: Amplifier A engages for positive VSENSE (forward current), driving current via –INA; Amplifier B engages for negative VSENSE (reverse current), routing current through –INB and an internal current mirror that inverts polarity at the OUT pin - all without external control signals or switches.
Can the LTC6104HMS8#PBF operate from a 5V single supply?
Yes, the LTC6104HMS8#PBF operates from 4V to 60V, so 5V is within specification. However, at 5V supply, VOUT swing is limited: minimum output is 0.25V and maximum is 1V (per Electrical Characteristics table). To maximize dynamic range, select VREF ≈ 0.625V and ROUT accordingly - and ensure VSENSE stays within ±500mV full-scale range.
What is the purpose of the +INB/VS pin on the LTC6104HMS8#PBF?
The +INB/VS pin serves dual functions: it is the positive input terminal for internal Amplifier B *and* the primary supply input for both internal amplifiers. Supply current flows through this pin, so PCB trace resistance here introduces a supply-induced offset error. For best accuracy, connect +INB/VS directly to the high-side rail with minimal trace length and width - never share this node with high-current paths.
Does the LTC6104HMS8#PBF require external resistors for basic operation?
Yes - the LTC6104HMS8#PBF requires external RIN (on –INA and/or –INB), ROUT (from OUT to VREF), and a stable VREF source to function. RIN sets transconductance (IOUT = VSENSE/RIN); ROUT and VREF convert output current to voltage (VOUT = IOUT × ROUT + VREF). No internal gain-setting resistors exist; all gain and level-shifting is externally programmable.
LTC6104HMS8#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:
- 100 nA
- Voltage - Input Offset:
- 85 µV
- Current - Supply:
- 640µA
- Current - Output / Channel:
- 1 mA
- Voltage - Supply Span (Min):
- 4 V
- Voltage - Supply Span (Max):
- 60 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
LTC6104HMS8#PBF FAQ
1.How can I place an order for LTC6104HMS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6104HMS8#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 LTC6104HMS8#PBF reliable?
The price and inventory of LTC6104HMS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6104HMS8#PBF is usually 5 days.
3.What payment methods are accepted for LTC6104HMS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6104HMS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6104HMS8#PBF?
LTC6104HMS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6104HMS8#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 LTC6104HMS8#PBF?
For technical support, including LTC6104HMS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6104HMS8#PBF requirements.
6.How does Aetrix verify that LTC6104HMS8#PBF is sourced from the original manufacturer or authorized distributors?
All LTC6104HMS8#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 LTC6104HMS8#PBF meets industry standards.
7.What is the process for return or replacement of LTC6104HMS8#PBF?
All LTC6104HMS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6104HMS8#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 LTC6104HMS8#PBF part is unused and in its original packaging.
Return procedure for LTC6104HMS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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