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Analog Devices Inc. LT6370HMS8#PBF
- Part No.:
- LT6370HMS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LT6370HMS8#PBF.pdf
- Description:
- IC INST AMP 1 CIRCUIT 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:133
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Product details
Overview
LT6370HMS8#PBF from Analog Devices is a high-precision, gain-programmable instrumentation amplifier in an 8-pin MSOP package, delivering 25µV max input offset voltage, 0.3µV/°C drift, 94dB CMRR (G=1), and 3.1MHz bandwidth at G=1 - enabling accurate bridge and thermocouple signal conditioning in industrial data acquisition systems.
For engineers reviewing the LT6370HMS8#PBF datasheet, LT6370HMS8#PBF pinout, LT6370HMS8#PBF application, or LT6370HMS8#PBF equivalent, this page provides verified DC precision specs, thermal stability data, EMI-hardened input filtering, gain-setting resistor guidance, and validated alternatives for high-accuracy analog front-end design.
Technical Context
The LT6370HMS8#PBF implements an enhanced three-op-amp topology with laser-trimmed 12.1kΩ internal resistors and proprietary bipolar process transistors (Q1/Q2) to achieve ultra-low drift and matched gain-stage performance. Its preamp transconductance scales with external RG, enabling self-adjusting bandwidth that maintains 3.1MHz at G=1 and 184kHz at G=100.
Integrated RFI filters on both inputs suppress RF interference without external components, while REF pin support enables precise level-shifting of the single-ended output. The device operates across ±2.375V to ±17.5V supplies and guarantees performance over –40°C to +125°C (H-grade).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 25µV max - enables sub-100µV signal resolution without calibration over temperature. |
| Offset Drift | 0.3µV/°C max - ensures <±0.5µV total drift across full –40°C to +125°C operating range. |
| CMRR (G=1) | 94dB min - rejects >3000:1 common-mode error in noisy industrial environments. |
| Bandwidth (G=1) | 3.1MHz - supports fast settling (5.8µs to 0.0015%) in multiplexed DAQ systems. |
| Supply Range | ±2.375V to ±17.5V (4.75V–35V total) - compatible with legacy ±15V rails and modern low-voltage systems. |
| Input Bias Current | 400pA max - preserves accuracy with high-impedance sensors like strain gauges and thermocouples. |
| EMI Filtering | Integrated on-chip RFI filters - eliminates need for external RC networks in EN 61000-4-3 compliant designs. |
Pinout & Package
LT6370HMS8#PBF uses an 8-lead MSOP (MS8) package with θJA = 163°C/W and θJC = 40°C/W. Pin 1 is –RG; pin 4 is V–; pin 5 is REF; pin 6 is OUTPUT; pin 7 is V+; pin 8 is +RG. Exposed pad is not connected internally and may be left floating or grounded for thermal enhancement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| –RG (Pin 1) | Gain set resistor negative terminal | Completes external RG connection; current through RG sets transconductance and gain G = 1 + 24.2kΩ/RG. |
| –IN (Pin 2) | Negative differential input | High-impedance (225GΩ) node; accepts signals down to V– + 1.8V with guaranteed CMRR. |
| +IN (Pin 3) | Positive differential input | High-impedance (225GΩ) node; paired with –IN for differential sensing with 15.9pF common-mode capacitance. |
| V– (Pin 4) | Negative power supply rail | Requires local 0.1µF ceramic bypass capacitor; supports rail-to-rail input common-mode down to V– + 1.8V. |
| REF (Pin 5) | Output reference voltage | Sets output DC level; accepts 0–V+ range; 20kΩ input resistance; ±100ppm REF gain error over temperature. |
| OUTPUT (Pin 6) | Single-ended amplified output | Drives 2kΩ load to ±14.3V swing (±15V supply); 80mA short-circuit current capability. |
| V+ (Pin 7) | Positive power supply rail | Requires local 0.1µF ceramic bypass capacitor; supports rail-to-rail input common-mode up to V+ – 1.4V. |
| +RG (Pin 8) | Gain set resistor positive terminal | Completes external RG connection; forms virtual ground with –RG for precise gain programming. |
Key Features
| Feature | Design Value |
|---|---|
| Laser-trimmed 12.1kΩ resistors | Enables 0.08% gain accuracy at G=100 using only one external 1% resistor (e.g., 243Ω). |
| Proprietary bipolar input stage (Q1/Q2) | Delivers 400pA max bias current and 7nV/√Hz input noise density at 1kHz for low-noise sensor interfaces. |
| Self-adjusting bandwidth architecture | Maintains usable bandwidth across gain range: 3.1MHz (G=1), 184kHz (G=100), 19kHz (G=1000). |
| On-chip EMI filtering | Rejects RF interference up to 1GHz without external components, preserving DC precision in harsh EMI environments. |
| H-grade temperature rating | Guaranteed operation and specifications over –40°C to +125°C junction temperature for automotive and industrial applications. |
Applications
| Bridge Amplifier | Data Acquisition |
|---|---|
|
Use Scenario: Amplifying mV-level outputs from 350Ω Wheatstone bridges in load cells and pressure sensors. IC Role / Device Role / Timing Role: Precision instrumentation amplifier providing programmable gain (G=100 typical), high CMRR, and low drift to resolve microstrain-level changes. Use Value: 25µV offset and 0.3µV/°C drift enable <0.01% FSR error over full industrial temperature range without recalibration. |
Use Scenario: Front-end signal conditioning in multi-channel, multiplexed industrial DAQ systems sampling thermocouples and RTDs. IC Role / Device Role / Timing Role: High-speed instrumentation amplifier with 5.8µs settling (0.0015%) and integrated EMI filtering for reliable channel switching. Use Value: 3.1MHz bandwidth and fast settling allow ≥100kSPS per channel while maintaining 16-bit effective resolution. |
| Thermocouple Amplifier | Strain Gauge Amplifier |
|
Use Scenario: Cold-junction compensated amplification of Type K/J thermocouple outputs (≈40µV/°C) with linearization. IC Role / Device Role / Timing Role: Low-noise, high-input-impedance amplifier rejecting millivolt-level common-mode noise from furnace environments. Use Value: 7nV/√Hz voltage noise and 225GΩ input resistance preserve thermocouple's weak signal integrity without loading error. |
Use Scenario: Signal conditioning for 120Ω–350Ω foil strain gauges in structural health monitoring and test benches. IC Role / Device Role / Timing Role: Precision differential amplifier with programmable gain and integrated RFI filtering for high-EMI mechanical test environments. Use Value: On-chip EMI filters eliminate need for external π-filters, reducing PCB area and component count in vibration-prone installations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar instrumentation amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8421ARMZ | Higher 1/f noise (0.25µV p-p, 0.1–10Hz), 100µV max offset, no integrated EMI filter, 2.8MHz BW (G=1) | Less suitable for EMI-heavy environments; requires external RFI filtering for EN 61000-4-3 compliance | Prefer AD8421 when ultra-low power (1.2mA) is critical and EMI is controlled; avoid where board space or layout complexity must be minimized. |
| INA826IDRCT | Lower supply range (2.7–36V), 125µV max offset, 1.5µV/°C drift, 2MHz BW (G=1), no EMI filter | Higher offset drift limits use in wide-temperature industrial applications without frequent calibration | Prefer INA826 for cost-sensitive, lower-precision applications where ambient temperature stays within 0–70°C and EMI is minimal. |
Compared with AD8421ARMZ and INA826IDRCT, the LT6370HMS8#PBF delivers superior DC precision (25µV vs ≥100µV offset), lower drift (0.3µV/°C vs ≥1.5µV/°C), and integrated EMI filtering - making it the only choice for uncalibrated, high-reliability measurement in harsh industrial or automotive environments.
Availability
LT6370HMS8#PBF is available at Aetrix Electronics and suitable for industrial data acquisition, precision bridge sensing, and thermocouple interface applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LT6370HMS8#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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The LT6370 belongs to Analog Devices' precision instrumentation amplifier product line, engineered specifically for high-accuracy, low-drift, EMI-hardened signal conditioning in demanding industrial and test equipment applications.
FAQ
What is the maximum gain achievable with LT6370HMS8#PBF using a standard 1% resistor?
The LT6370HMS8#PBF supports gains up to 1000 using a 24.3Ω 1% resistor (RG = 24.2kΩ/(G−1)). At G=1000, the device delivers 19kHz bandwidth and 100µs settling time to 0.0015%. Gains beyond 1000 are possible but require sub-24Ω resistors where PCB trace resistance introduces measurable error - thus 1000 is the practical maximum for production designs using standard 1% resistors.
Does LT6370HMS8#PBF require external EMI filtering for EN 61000-4-3 compliance?
No - the LT6370HMS8#PBF integrates on-chip RFI filters on both +IN and –IN pins, demonstrated to maintain DC precision under 10V/m RF fields up to 1GHz. This eliminates the need for external RC networks or ferrite beads in most industrial applications, simplifying layout and reducing BOM count while meeting EN 61000-4-3 Level 3 immunity requirements.
How does the REF pin function in LT6370HMS8#PBF, and what is its input impedance?
The REF pin in LT6370HMS8#PBF sets the output DC level relative to which the amplified differential signal appears. It accepts voltages from V– to V+, has 20kΩ input resistance, and draws ±60µA max input current. Its gain to output is precisely 1V/V with ±100ppm error over temperature, enabling accurate level-shifting for ADC interfacing or bipolar-to-unipolar conversion without external op-amps.
What is the thermal performance difference between LT6370HMS8#PBF and the S8E-packaged LT6370HS8E#PBF?
The LT6370HMS8#PBF (MSOP) has θJA = 163°C/W, while the LT6370HS8E#PBF (SOIC) has θJA = 33°C/W - meaning the SOIC package dissipates heat far more effectively on standard FR4. For continuous 3mA operation at +125°C ambient, the MSOP junction temperature rises ~50°C higher than the SOIC. Use LT6370HMS8#PBF only where board space constraints justify the thermal penalty; otherwise, LT6370HS8E#PBF is preferred for high-power or high-ambient designs.
Can LT6370HMS8#PBF operate from a single 5V supply?
Yes - the LT6370HMS8#PBF supports single-supply operation from +4.75V to +35V (with V– tied to ground). At +5V, it guarantees ±1.3V output swing into 10kΩ and maintains 25µV offset and 0.3µV/°C drift. Input common-mode range extends from +1.8V to +3.6V, allowing direct interfacing with 0–5V sensors when REF is set to mid-supply (e.g., 2.5V) via a precision divider.
LT6370HMS8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Instrumentation
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 11V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 19 kHz
- Current - Input Bias:
- 100 pA
- Voltage - Input Offset:
- 15 µV
- Current - Supply:
- 2.65mA
- Current - Output / Channel:
- 55 mA
- Voltage - Supply Span (Min):
- 4.75 V
- Voltage - Supply Span (Max):
- 35 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
LT6370HMS8#PBF FAQ
1.How can I place an order for LT6370HMS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6370HMS8#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 LT6370HMS8#PBF reliable?
The price and inventory of LT6370HMS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6370HMS8#PBF is usually 5 days.
3.What payment methods are accepted for LT6370HMS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6370HMS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6370HMS8#PBF?
LT6370HMS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6370HMS8#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 LT6370HMS8#PBF?
For technical support, including LT6370HMS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6370HMS8#PBF requirements.
6.How does Aetrix verify that LT6370HMS8#PBF is sourced from the original manufacturer or authorized distributors?
All LT6370HMS8#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 LT6370HMS8#PBF meets industry standards.
7.What is the process for return or replacement of LT6370HMS8#PBF?
All LT6370HMS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6370HMS8#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 LT6370HMS8#PBF part is unused and in its original packaging.
Return procedure for LT6370HMS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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