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Analog Devices Inc. LT6376IMS#PBF
- Part No.:
- LT6376IMS#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-TFSOP (0.118", 3.00mm Width), 12 Leads
- Datasheet:
-
LT6376IMS#PBF.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,883
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Product details
Overview
LT6376IMS#PBF from Analog Devices (formerly Linear Technology) is a precision gain-of-10 difference amplifier optimized for high common-mode voltage current sensing and level translation. It delivers ±230V input common mode range, 90dB minimum CMRR, 0.0075% max gain error, 1ppm/°C gain drift, and rail-to-rail output - enabling accurate bidirectional current monitoring in industrial power supplies, motor drives, and battery management systems.
For engineers reviewing the LT6376IMS#PBF datasheet, LT6376IMS#PBF pinout, LT6376IMS#PBF application, or LT6376IMS#PBF equivalent, key selection criteria include its selectable resistor divider ratios (3.1/8.3/10.3), ±230V common mode tolerance, low 105nV/√Hz input-referred noise at DIV=3.1, 350µA supply current, and MSOP-16 package compatibility with space-constrained high-voltage signal chains.
Technical Context
The LT6376IMS#PBF integrates a precision Over-The-Top® op amp with a laser-trimmed thin-film resistor network to achieve exceptional DC accuracy and wide common-mode operation. Its internal architecture uses configurable reference pins (+REFA/–REFA, +REFB/–REFB, +REFC/–REFC) to select one of three resistor divider ratios (3.1, 8.3, or 10.3), directly trading input voltage range against noise, offset, and bandwidth.
This configuration determines both the input common-mode operating region (VCMOP) and the amplifier's performance envelope: at DIV=10.3, it supports ±230V VCM but exhibits 245nV/√Hz noise and 160kHz bandwidth; at DIV=3.1, bandwidth rises to 300kHz and noise drops to 105nV/√Hz while limiting VCM to ±28V under standard test conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | Fixed 10 V/V - enables direct scaling of differential input to 10× output without external gain-setting components. |
| Input Common Mode Range | ±230V - allows direct connection to high-side shunts in 400V+ bus systems without isolation or level-shifting circuitry. |
| CMRR | ≥90dB (min) - rejects >99.99% of common-mode interference, critical for accurate current measurement in noisy power electronics. |
| Gain Error | ±0.0075% (75ppm) - ensures <±0.75mV error at 10V output, supporting 16-bit+ system accuracy without calibration. |
| Gain Drift | 1ppm/°C - contributes only ±0.1% gain change over –40°C to 85°C, eliminating thermal recalibration in industrial environments. |
| Supply Voltage Range | 3.3V to 50V - supports single-supply (3.3V/5V logic) and dual-supply (±15V/±25V) operation across diverse host systems. |
| Bandwidth (DIV=3.1) | 300kHz - sufficient for fast transient current detection in switching converters and motor phase control. |
| Input Referred Noise | 105nV/√Hz @ 1kHz (DIV=3.1) - enables sub-milliamp resolution in 1mΩ shunt-based sensing at 10kHz bandwidth. |
Pinout & Package
LT6376IMS#PBF is housed in a 16-lead plastic MSOP package (4.0mm × 3.0mm, 0.65mm pitch) with exposed pad not connected internally. The package supports reflow soldering and provides thermal resistance θJA = 130°C/W.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| +IN (Pin 1) | Noninverting Input Terminal | Accepts input voltages from –230V to +230V; connects to high-side shunt or signal source in difference configuration. |
| –IN (Pin 16) | Inverting Input Terminal | Accepts input voltages from –230V to +230V; completes differential pair with +IN for precise VDIFF amplification. |
| +REFA / –REFA (Pins 3 / 14) | Reference A Terminals | Configure resistor divider ratio; open or grounded to select DIV=3.1, 8.3, or 10.3 per datasheet Table 1. |
| +REFB / –REFB (Pins 5 / 12) | Reference B Terminals | Part of 3-pin reference selection scheme; joint state with REFA/REFC sets attenuation and VCMOP operating point. |
| +REFC / –REFC (Pins 6 / 11) | Reference C Terminals | Final element in ratio selection; all six REF pins must be configured consistently to avoid undefined behavior. |
| REF (Pin 7) | Output Reference Input | Sets output DC level when VDIFF=0; enables level shifting into ADC or comparator input ranges. |
| V+ (Pin 10) | Positive Supply Rail | Supports up to +50V; powers internal op amp and resistor network; requires local decoupling near pin. |
| V– (Pin 8) | Negative Supply Rail | Supports down to –50V; tied to exposed pad (Pin 15); must be connected to PCB ground plane for thermal and electrical integrity. |
| OUT (Pin 9) | Analog Output | Rail-to-rail output capable of sourcing/sinking 5mA; drives ADC inputs, isolation stages, or analog controllers directly. |
Key Features
| Feature | Design Value |
|---|---|
| Selectably Configured Resistor Divider Ratios | Three discrete ratios (3.1, 8.3, 10.3) set via REF pin states - enables optimization of VCM range vs. noise/bandwidth for each application. |
| Over-The-Top® Input Protection | Internal op amp operates safely with inputs up to ±240V regardless of supply rails - eliminates need for external clamping in fault-prone HV environments. |
| Precision Thin-Film Resistor Network | Laser-trimmed matching ensures 0.0075% max gain error and 2ppm max nonlinearity - removes gain calibration in production test. |
| Low Power Shutdown (MSOP variant) | Not supported - SHDN pin is DFN-only; LT6376IMS#PBF remains active whenever powered, simplifying control logic in always-on systems. |
| Wide Temperature Specification | Guaranteed performance from –40°C to +85°C - validated across automotive-grade thermal cycling for industrial reliability. |
| High PSRR (120dB typ) | Rejects supply ripple before amplification - preserves signal integrity when sharing rails with noisy digital or switching regulators. |
Applications
| High-Side Current Sensing | Bidirectional Wide Common-Mode Current Sensing |
|---|---|
|
Use Scenario: Monitoring charging/discharging current in 48V battery packs using a high-side shunt placed between battery positive and load. IC Role / Device Role / Timing Role: Difference amplifier measuring mV-level shunt voltage while rejecting 48V common-mode bus voltage. Use Value: Enables single-chip, isolated-equivalent sensing without optocouplers or isolated ADCs, reducing BOM cost and board area by >30%. |
Use Scenario: Detecting forward/reverse current in H-bridge motor drivers where shunt sits between bridge midpoints and ground. IC Role / Device Role / Timing Role: Precision gain-of-10 amplifier converting bidirectional shunt voltage to bipolar output referenced to system ground. Use Value: Delivers 16-bit-equivalent linearity (2ppm nonlinearity) and <1µV/°C offset drift - supports closed-loop torque control within ±0.5% accuracy. |
| High-Voltage to Low-Voltage Level Translation | Precision Difference Amplifier for Industrial DAQ |
|
Use Scenario: Converting ±200V sensor outputs (e.g., piezoelectric accelerometers) to ±2V full-scale range compatible with 16-bit SAR ADCs. IC Role / Device Role / Timing Role: High-CMRR attenuator/amplifier translating HV signals while preserving SNR and dynamic range. Use Value: Achieves 105nV/√Hz noise floor at 300kHz BW - maintains >90dB effective resolution even at 100kHz input frequencies. |
Use Scenario: Front-end conditioning for programmable logic controller (PLC) analog input modules requiring ±10V, 0.01% accuracy over temperature. IC Role / Device Role / Timing Role: Precision difference amplifier rejecting common-mode noise on long field wiring while amplifying sensor differential signals. Use Value: 90dB CMRR and 1ppm/°C gain drift ensure stable calibration over 10-year field life without periodic recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar difference amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA240A1IDR | Fixed gain (20V/V), lower VCM (–4V to 80V), higher quiescent current (2.4mA), no REF pin for level shift. | Best suited for mid-range industrial current sensing (<80V bus), where gain flexibility and ultra-low power are secondary to cost. | Select INA240A1IDR when VCM ≤80V and system-level gain can accommodate fixed 20× scaling without post-amplification. |
| AD8479ARZ | Fixed gain (1V/V), wider VCM (±600V), higher noise (200nV/√Hz), no resistor ratio selection, SOIC-8 package. | Ideal for ultra-high-voltage isolation replacement (e.g., IGBT gate driver feedback) where minimal gain and maximum VCM dominate. | Choose AD8479ARZ only when ±600V VCM is mandatory and 1V/V gain aligns with downstream signal chain requirements. |
Compared with INA240A1IDR and AD8479ARZ, the LT6376IMS#PBF uniquely balances ±230V VCM, selectable gain scaling via resistor ratios, and 105nV/√Hz noise - making it optimal for applications demanding both high-voltage tolerance and high-precision, low-noise amplification in compact MSOP form factor.
Availability
LT6376IMS#PBF is available at Aetrix Electronics and suitable for industrial motor control, battery energy storage systems, and programmable logic controller (PLC) analog input modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for LT6376IMS#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 semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LT6376IMS#PBF belongs to ADI's precision signal conditioning portfolio, designed specifically for high-common-mode-voltage current sensing and level translation in harsh industrial environments where accuracy, reliability, and thermal stability are non-negotiable.
FAQ
What is the maximum input common mode voltage supported by the LT6376IMS#PBF?
The LT6376IMS#PBF supports a guaranteed ±230V input common mode voltage range when configured with resistor divider ratio = 10.3, VS = ±25V, and operating from –40°C to +85°C. This rating is validated per the Absolute Maximum Ratings table and confirmed in Typical Performance Characteristics Figure G15 (Common Mode Voltage Range vs Power Supply Voltage). Exceeding ±240V on +IN or –IN risks permanent damage.
Does the LT6376IMS#PBF have a shutdown function?
No, the LT6376IMS#PBF does not include a shutdown function. The SHDN pin is present only on the DFN-14 package variants (e.g., LT6376IDF#PBF). The MSOP-16 version - including LT6376IMS#PBF - lacks this pin and remains fully operational whenever V+ and V– supplies are applied. Power-down must be implemented externally via supply rail control.
How do I configure the LT6376IMS#PBF for ±230V common mode operation?
To achieve ±230V common mode range, configure the LT6376IMS#PBF with resistor divider ratio = 10.3 by connecting +REFA, –REFA, +REFB, –REFB, +REFC, and –REFC all to ground (0V). This configuration is explicitly defined in the Electrical Characteristics tables and Applications Information section. Do not leave any REF pin floating - all six must be terminated consistently.
What is the typical input referred noise of the LT6376IMS#PBF and how does it vary with configuration?
The LT6376IMS#PBF delivers 105nV/√Hz input-referred noise density at 1kHz when configured with resistor divider ratio = 3.1. At ratio = 10.3, noise increases to 245nV/√Hz due to higher resistor values in the internal network. This trade-off is documented in the Electrical Characteristics table and reflects fundamental thermal noise scaling with resistance - users must select the lowest viable ratio for their VCM requirement to minimize noise impact.
Is the LT6376IMS#PBF RoHS compliant and what is its lead-free status?
Yes, the LT6376IMS#PBF is RoHS and WEEE compliant. Per the Order Information section of the datasheet, parts ending in "#PBF" denote lead-free packaging with 100% matte tin lead finish. The device meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) and is qualified for standard reflow soldering profiles without special handling.
LT6376IMS#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:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 4.1V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 300 kHz
- Current - Input Bias:
- -
- Voltage - Input Offset:
- 50 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 ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-MSOP
LT6376IMS#PBF FAQ
1.How can I place an order for LT6376IMS#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6376IMS#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 LT6376IMS#PBF reliable?
The price and inventory of LT6376IMS#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6376IMS#PBF is usually 5 days.
3.What payment methods are accepted for LT6376IMS#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6376IMS#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6376IMS#PBF?
LT6376IMS#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6376IMS#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 LT6376IMS#PBF?
For technical support, including LT6376IMS#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6376IMS#PBF requirements.
6.How does Aetrix verify that LT6376IMS#PBF is sourced from the original manufacturer or authorized distributors?
All LT6376IMS#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 LT6376IMS#PBF meets industry standards.
7.What is the process for return or replacement of LT6376IMS#PBF?
All LT6376IMS#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6376IMS#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 LT6376IMS#PBF part is unused and in its original packaging.
Return procedure for LT6376IMS#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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