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Analog Devices Inc. LT6375HMS#PBF
- Part No.:
- LT6375HMS#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-TFSOP (0.118", 3.00mm Width), 12 Leads
- Datasheet:
-
LT6375HMS#PBF.pdf
- Description:
- IC OPAMP DIFF 1 CIRCUIT 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:963
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Product details
Overview
LT6375HMS#PBF from Analog Devices (formerly Linear Technology) is a precision unity-gain difference amplifier optimized for high common-mode voltage sensing, featuring ±270V input common mode range, 97dB minimum CMRR (A-grade), 0.0035% max gain error, and selectable internal resistor divider ratios (7/20/25) to balance input range vs. noise/bandwidth trade-offs. It serves as a bidirectional current monitor in industrial motor drives and high-voltage power supplies.
For engineers reviewing the LT6375HMS#PBF datasheet, LT6375HMS#PBF pinout, LT6375HMS#PBF application, or LT6375HMS#PBF equivalent, key selection criteria include its Over-The-Top® protected inputs, rail-to-rail output swing, 350µA supply current, –40°C to 125°C operating range, and MSOP-16 package compatibility with high-density PCB layouts.
Technical Context
The LT6375HMS#PBF integrates a precision op amp with a highly matched thin-film resistor network to achieve exceptional DC accuracy and robustness against unpredictable input voltages. Its Over-The-Top® input protection enables operation with inputs up to ±270V regardless of supply rails, while internal selectable dividers (7/20/25) configure the input attenuation path to match system-level common-mode requirements.
It delivers 575kHz –3dB bandwidth at DIV=7 and 310kHz at DIV=25, with 1.6V/µs slew rate and 10µVp-p 0.1Hz–10Hz output-referred noise. The device supports shutdown mode (20µA quiescent current) and features rail-to-rail output swing within 5mV of rails under no load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Common Mode Range | ±270V - Enables direct sensing across high-voltage bus rails without external level-shifting circuitry. |
| CMRR (min) | 97dB (LT6375A grade) - Ensures <0.0035% gain error contribution from common-mode transients in noisy industrial environments. |
| Gain Error (max) | 0.0035% (35ppm) - Guarantees sub-0.1mV error at 10V output, critical for precision current measurement in energy metering. |
| Supply Voltage Range | 3.3V to 50V - Supports single-supply (5V) and dual-supply (±15V) operation, simplifying power architecture in mixed-signal systems. |
| Bandwidth (DIV=7) | 575kHz - Sufficient for fast transient detection in overcurrent protection circuits with <41µs 0.01% settling time. |
| Quiescent Current | 350µA active / 20µA shutdown - Enables low-power operation in battery-backed monitoring subsystems. |
| Operating Temperature | –40°C to 125°C - Qualified for under-hood automotive, industrial PLC, and solar inverter front-end applications. |
Pinout & Package
LT6375HMS#PBF is housed in a 16-lead plastic MSOP package (4.0mm × 3.0mm, 0.65mm pitch) with exposed thermal pad connected to V–. Pin 1 is +IN; pins 3–6 are +REFA/+REFB/+REFC/REF; pins 7–11 are SHDN/V+/OUT/–REFA/–REFB; pins 12–16 are –REFC/–IN/V–/–REFA/–REFB (see MSOP top view in datasheet).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN (Pin 1) | Noninverting Input | Accepts input voltages from –270V to +270V; connects directly to high-side sense point in current monitoring. |
| –IN (Pin 16) | Inverting Input | Accepts complementary high-voltage input; differential pair forms precision voltage subtractor with matched resistors. |
| +REFA/+REFB/+REFC (Pins 3,4,5) | Positive Reference Select | Configures internal resistor divider ratio (7/20/25); open or grounded to set input attenuation and noise/bandwidth profile. |
| –REFA/–REFB/–REFC (Pins 14,12,11) | Negative Reference Select | Complementary negative-side reference terminals; must mirror +REF configuration for proper divider symmetry. |
| REF (Pin 7) | Output Offset Reference | Sets zero-differential output voltage; allows level-shifting to match ADC input range (e.g., 2.5V for 12-bit SAR ADC). |
| V+ (Pin 10) | Positive Supply | Supports up to +50V; powers internal op amp and resistor network; decoupling required near pin. |
| V– (Pin 8) | Negative Supply | Supports down to –50V; exposed pad (Pin 15) is electrically tied to V– and must be soldered for thermal performance. |
| OUT (Pin 9) | Analog Output | Rail-to-rail output capable of sourcing/sinking 5mA; drives 10kΩ loads with <0.5mV error at full scale. |
Key Features
| Feature | Design Value |
|---|---|
| Selectably Configurable Resistor Divider | Three internal ratios (7/20/25) let designers optimize for ±270V range (DIV=25) or maximize bandwidth/noise (DIV=7) without external components. |
| Over-The-Top® Input Protection | Enables safe operation with inputs exceeding supply rails by >250V - eliminates need for external clamping diodes or isolation in HV sensing. |
| High-Precision DC Performance | 300µV max offset, 1ppm/°C gain drift, and 2ppm nonlinearity ensure stable calibration over temperature in metrology-grade applications. |
| Low-Power Shutdown Mode | Reduces supply current to 20µA (DFN only) - not applicable to LT6375HMS#PBF, but confirms design lineage and low-power capability in pin-compatible variants. |
| Wide-Supply Flexibility | Operates from 3.3V single supply to ±25V dual supply - supports legacy industrial systems and modern low-voltage embedded controllers. |
Applications
| High Side Current Sensing | Bidirectional Wide Common Mode Sensing |
|---|---|
|
Use Scenario: Monitoring phase current in a 400VDC solar inverter leg using a shunt resistor placed between IGBT collector and DC bus. IC Role / Device Role / Timing Role: Precision difference amplifier converting mV-level shunt voltage into ground-referenced output for isolated ADC sampling. Use Value: ±270V common mode range accommodates full bus voltage swing; 97dB CMRR rejects PWM switching noise coupling onto sense lines. |
Use Scenario: Bidirectional current measurement in an EV battery management system cell balancing circuit with ±60V common mode. IC Role / Device Role / Timing Role: Unity-gain differential front-end conditioning shunt voltage before multiplexed ADC conversion. Use Value: Selectable DIV=20 provides optimal trade-off: 375kHz bandwidth for fast charge/discharge transitions and <0.005% gain error over temperature. |
| High Voltage to Low Voltage Level Translation | Precision Difference Amplifier |
|
Use Scenario: Converting ±150V analog feedback signal from a high-voltage lab power supply into 0–5V range for microcontroller ADC input. IC Role / Device Role / Timing Role: High-impedance attenuating difference amplifier with REF pin biasing output to mid-supply. Use Value: Internal thin-film resistors guarantee 0.0035% gain accuracy; rail-to-rail output ensures full 5V dynamic range utilization. |
Use Scenario: Isolating sensor signals in a Class I medical device where galvanic isolation is impractical due to size constraints. IC Role / Device Role / Timing Role: Precision differential receiver rejecting common-mode EMI on long sensor cables in MRI room environments. Use Value: 100dB PSRR and 97dB CMRR suppress 50/60Hz mains interference and RF pickup without requiring shielded twisted pairs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar difference amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA240A1QDGSRQ1 | Fixed 20V/V gain, 80V common mode, 120dB CMRR, SOIC-8 package | Designed for unidirectional current sensing in automotive AEC-Q100 systems; lacks ±270V range and selectable dividers | Choose when automotive qualification and fixed high gain are required, but ±270V operation is unnecessary. |
| AD8479ARZ | Fixed 1V/V gain, ±600V common mode, 86dB CMRR, SOIC-8 package | Higher voltage rating but lower CMRR and no internal reference configuration; requires external REF biasing | Choose when extreme ±600V range is mandatory and 97dB CMRR is not required for noise immunity. |
Compared with INA240A1QDGSRQ1 and AD8479ARZ, the LT6375HMS#PBF uniquely combines ±270V operation, user-selectable gain configuration via reference pins, and 97dB CMRR in a space-saving MSOP-16 - making it optimal for industrial and renewable energy systems demanding both precision and high-voltage robustness.
Availability
LT6375HMS#PBF is available at Aetrix Electronics and suitable for industrial motor control, solar inverter monitoring, and high-voltage test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LT6375HMS#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 LT6375HMS#PBF belongs to Linear's precision signal conditioning product line, engineered specifically for high common-mode voltage measurement in harsh industrial, energy, and test-and-measurement applications.
FAQ
What is the maximum common mode voltage supported by the LT6375HMS#PBF?
The LT6375HMS#PBF supports a guaranteed ±270V input common mode voltage range when configured with resistor divider ratio = 25 (all REF pins grounded). This is validated per Absolute Maximum Ratings and confirmed in the Electrical Characteristics table for VCM parameter. Operation beyond this range risks permanent damage.
Does the LT6375HMS#PBF have a shutdown function, and how is it controlled?
The LT6375HMS#PBF does not implement shutdown functionality. Although the datasheet references SHDN pin behavior, that feature is exclusive to the DFN-14 package variants (e.g., LT6375HDF#PBF). The MSOP-16 package (LT6375HMS#PBF) omits the SHDN pin entirely - Pin 7 is REF, not SHDN.
How do I configure the LT6375HMS#PBF for a 375kHz bandwidth?
To achieve 375kHz –3dB bandwidth, configure the LT6375HMS#PBF with resistor divider ratio = 20: tie +REFB and –REFB to ground (or mid-supply), and leave +REFA/+REFC/–REFA/–REFC open. This configuration is explicitly specified in the Electrical Characteristics tables and verified in Typical Performance Characteristics (Figure G21).
What is the guaranteed CMRR performance of the LT6375HMS#PBF over temperature?
The LT6375HMS#PBF guarantees ≥94dB CMRR over the full –40°C to 125°C operating range for all divider ratios, with ≥97dB minimum for the LT6375A grade at 25°C. These values are tested per the "l" notation in the Electrical Characteristics table and apply to both MSOP and DFN packages.
Can the LT6375HMS#PBF operate from a single 5V supply?
Yes, the LT6375HMS#PBF operates from a single 5V supply (V+ = 5V, V– = 0V), as confirmed in the Electrical Characteristics section (page 5). In this configuration, the input common mode range is reduced to –25.5V to +21.25V (DIV=25), and output swing remains rail-to-rail with 5mV typical headroom.
LT6375HMS#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TFSOP (0.118", 3.00mm Width), 12 Leads
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Differential
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 2.4V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 575 kHz
- Current - Input Bias:
- -
- Voltage - Input Offset:
- 120 µV
- Current - Supply:
- 350µA
- Current - Output / Channel:
- 28 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 50 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-MSOP
LT6375HMS#PBF FAQ
1.How can I place an order for LT6375HMS#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6375HMS#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 LT6375HMS#PBF reliable?
The price and inventory of LT6375HMS#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6375HMS#PBF is usually 5 days.
3.What payment methods are accepted for LT6375HMS#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6375HMS#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6375HMS#PBF?
LT6375HMS#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6375HMS#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 LT6375HMS#PBF?
For technical support, including LT6375HMS#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6375HMS#PBF requirements.
6.How does Aetrix verify that LT6375HMS#PBF is sourced from the original manufacturer or authorized distributors?
All LT6375HMS#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 LT6375HMS#PBF meets industry standards.
7.What is the process for return or replacement of LT6375HMS#PBF?
All LT6375HMS#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6375HMS#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 LT6375HMS#PBF part is unused and in its original packaging.
Return procedure for LT6375HMS#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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