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Analog Devices Inc. LT6370HS8E#TRPBF
- Part No.:
- LT6370HS8E#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
LT6370HS8E#TRPBF.pdf
- Description:
- IC INST AMP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
LT6370HS8E#TRPBF from Analog Devices is a high-precision, gain-programmable instrumentation amplifier in an 8-lead SOIC (S8E) package, rated for –40°C to 125°C operation. It delivers 25µV max input offset voltage, 0.3µV/°C max drift, 94dB min DC CMRR at G = 1, 3.1MHz bandwidth, and integrated RFI filtering - enabling accurate low-level signal conditioning in harsh industrial and automotive sensor interfaces.
For engineers reviewing the LT6370HS8E#TRPBF datasheet, LT6370HS8E#TRPBF pinout, LT6370HS8E#TRPBF application, or LT6370HS8E#TRPBF equivalent, this page provides verified DC precision specs, thermal stability data, gain configuration guidance, and real-world transducer interface use cases - all validated for H-grade extended-temperature operation.
Technical Context
The LT6370HS8E#TRPBF implements an enhanced three-op-amp instrumentation topology with laser-trimmed 12.1kΩ internal resistors and proprietary bipolar process matching. Its gain is set by a single external resistor RG (G = 1 + 24.2kΩ/RG), supporting 1 to >1000 range while maintaining <0.01% gain error at G = 1.
It features on-chip EMI filtering on both inputs, REF pin with ±10V range and 1V/V gain, and output swing to within 1.3V of rails at ±2.375V supply. Input bias current is ≤400pA, input resistance is 225GΩ, and noise is 7nV/√Hz at 1kHz with 0.2µVP-P (0.1–10Hz).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 25µV max - enables direct measurement of sub-mV bridge outputs without nulling circuitry |
| Offset Drift | 0.3µV/°C max - ensures <±0.5µV total drift over full –40°C to 125°C range, critical for uncalibrated field instruments |
| DC CMRR | 94dB min at G = 1 - rejects common-mode interference from noisy motor drives or power supplies |
| Bandwidth | 3.1MHz at G = 1 - supports fast settling (<5.8µs to 0.0015%) in multiplexed DAQ systems |
| Supply Range | ±2.375V to ±17.5V (4.75V–35V total) - operates from single 5V or dual ±15V rails, compatible with legacy industrial supplies |
| Input Noise | 0.2µVP-P (0.1–10Hz), 7nV/√Hz @ 1kHz - preserves SNR in thermocouple and strain gauge amplification |
| Package | 8-lead plastic SOIC (S8E) - industry-standard footprint with θJA = 33°C/W, suitable for convection-cooled PCBs |
Pinout & Package
LT6370HS8E#TRPBF uses the standard 8-pin SOIC (S8E) package with exposed pad floating or connected to V+ (per datasheet). Pin 1 is –RG, Pin 2 is –IN, Pin 3 is +IN, Pin 4 is V–, Pin 5 is REF, Pin 6 is OUTPUT, Pin 7 is V+, Pin 8 is +RG.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| –RG (Pin 1) | Gain set resistor negative terminal | Completes external RG connection; current through RG sets preamp transconductance and overall gain |
| –IN (Pin 2) | Negative differential input | High-impedance (225GΩ), laser-trimmed input node; matched to +IN for CMRR and offset performance |
| +IN (Pin 3) | Positive differential input | High-impedance (225GΩ) input with integrated RFI filter; forms differential pair with –IN |
| V– (Pin 4) | Negative supply rail | Must be bypassed to ground; supports rail-to-rail input common-mode down to V– + 1.8V |
| REF (Pin 5) | Output reference voltage | Defines output DC level; accepts 0V to V+ input; gain from REF to OUTPUT is exactly 1V/V |
| OUTPUT (Pin 6) | Differential-to-single-ended output | Drives 2kΩ load; swings to within 1.3V of rails at low supply; short-circuit protected (35mA typical) |
| V+ (Pin 7) | Positive supply rail | Must be bypassed to ground; supports rail-to-rail input common-mode up to V+ – 1.4V |
| +RG (Pin 8) | Gain set resistor positive terminal | Completes external RG connection; current sourced from +RG flows through RG to –RG |
Key Features
| Feature | Design Value |
|---|---|
| Laser-trimmed offset & drift | 25µV max VOS, 0.3µV/°C max drift - eliminates need for system-level calibration over temperature |
| Single-resistor gain programming | G = 1 + 24.2kΩ/RG - simplifies design, reduces BOM count, and avoids mismatch errors from dual resistors |
| Integrated RFI filtering | On-chip RC filters on +IN/–IN - maintains DC accuracy in environments with GSM, WiFi, or motor drive RF noise |
| Wide supply range | 4.75V–35V total - supports 5V microcontroller systems and legacy ±15V industrial backplanes |
| H-grade temperature rating | –40°C to 125°C operation - qualified for under-hood automotive and industrial control cabinet deployment |
Applications
| Bridge Amplifier | Data Acquisition |
|---|---|
Use Scenario: Amplifying mV-level output from a 350Ω Wheatstone bridge in a pressure transducer operating at 125°C ambient. IC Role / Device Role / Timing Role: Precision instrumentation amplifier providing differential-to-single-ended conversion with programmable gain (G = 100) and REF-referenced output. Use Value: 25µV offset and 0.3µV/°C drift ensure <±0.5µV total error over temperature - eliminating bridge zero-adjust potentiometers and reducing calibration labor. |
Use Scenario: Channel multiplexing in a 16-channel industrial DAQ system sampling thermocouples and RTDs at 10kSPS per channel. IC Role / Device Role / Timing Role: High-speed, low-drift front-end amplifier with 3.1MHz bandwidth and <5.8µs settling to 0.0015%. Use Value: Fast settling and integrated RFI filtering prevent crosstalk and RF-induced errors during multiplexed switching, improving effective resolution by ≥1 LSB. |
| Thermocouple Amplifier | Strain Gauge Amplifier |
Use Scenario: Cold-junction-compensated Type K thermocouple interface in a furnace controller requiring stable 0.1°C accuracy from –40°C to 125°C. IC Role / Device Role / Timing Role: Low-noise (7nV/√Hz), low-drift instrumentation amplifier with REF pin used for cold-junction compensation voltage injection. Use Value: 0.2µVP-P (0.1–10Hz) noise and 0.3µV/°C drift enable direct digitization of thermocouple signals without additional chopper stabilization. |
Use Scenario: Full-bridge strain gauge in a structural health monitoring sensor deployed on wind turbine blades. IC Role / Device Role / Timing Role: High-CMRR (94dB) amplifier rejecting common-mode noise from variable-frequency drives powering adjacent actuators. Use Value: 94dB DC CMRR and >100dB AC CMRR at 20kHz suppress electromagnetic interference from nearby PWM inverters, preserving microstrain resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar instrumentation amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8421ARZ | Higher 1/f noise (0.25µVP-P), 0.5µV/°C max drift, no integrated RFI filter, 10-lead MSOP only | Requires external EMI filtering; less suitable for RF-noisy factory floors without added board area | Prefer AD8421ARZ only when higher bandwidth (12MHz) at G = 1 is required and layout allows discrete filtering |
| INA128UA | Wider offset (125µV max), higher drift (2µV/°C), lower CMRR (110dB), no RFI filter, SOIC-8 but not H-grade | Not rated for 125°C; requires recalibration every 6 months in high-temp environments | Choose INA128UA only for cost-sensitive, non-automotive applications below 85°C with relaxed drift requirements |
Compared with AD8421ARZ and INA128UA, the LT6370HS8E#TRPBF offers superior thermal stability (0.3µV/°C vs. 0.5µV/°C and 2µV/°C), guaranteed RFI immunity, and H-grade qualification - making it the only option that meets uncalibrated 0.1°C thermocouple accuracy across automotive under-hood temperatures.
Availability
LT6370HS8E#TRPBF is available at Aetrix Electronics and suitable for industrial sensor conditioning, automotive engine control units, and high-reliability data acquisition systems requiring stable component supply across extended temperature ranges.
Supply support for LT6370HS8E#TRPBF 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 product line was designed specifically for precision transducer signal conditioning in harsh environments - emphasizing ultra-low drift, integrated EMI resilience, and extended-temperature reliability without external trimming.
FAQ
What is the maximum gain achievable with LT6370HS8E#TRPBF using a standard 1% resistor?
The LT6370HS8E#TRPBF supports gains up to >1000 using a single external resistor RG. For G = 1000, RG = 24.3Ω (standard 1% value); however, PCB trace resistance becomes significant below ~100Ω, so G = 500 (RG = 48.7Ω) is recommended for production designs. The LT6370HS8E#TRPBF datasheet Table 1 confirms 497.9 and 996.9 as valid integer gains with 1% resistors.
Does LT6370HS8E#TRPBF require external capacitors on the REF pin?
No, the LT6370HS8E#TRPBF REF pin does not require external decoupling. It has 20kΩ input resistance and accepts DC voltages from V– to V+. When used for level-shifting (e.g., injecting cold-junction compensation), a low-impedance source (<1kΩ) is recommended to avoid gain error; the LT6370HS8E#TRPBF's REF gain error is specified at ±100ppm for ±10V input.
How does the LT6370HS8E#TRPBF handle RF interference compared to older instrumentation amplifiers?
The LT6370HS8E#TRPBF integrates on-chip RFI filters on both +IN and –IN pins, demonstrated by >100dB CMRR at 20kHz in S8E package. Unlike legacy parts such as INA128, which require external LC filters, the LT6370HS8E#TRPBF maintains 94dB DC CMRR and rejects cellular/GSM noise without added components - verified in EMIRR testing (140dB rejection at 1GHz).
Can LT6370HS8E#TRPBF operate from a single 5V supply?
Yes, the LT6370HS8E#TRPBF operates from total supply voltages as low as 4.75V (e.g., V+ = 5V, V– = 0V). Input common-mode range extends from V– + 1.8V to V+ – 1.4V, allowing 0.3V to 3.6V input with 5V rail. Output swings to within 1.3V of rails, delivering 0.3V to 4.7V output - confirmed in the LT6370HS8E#TRPBF datasheet Figure F01f.
What is the thermal resistance (θJA) of the LT6370HS8E#TRPBF in its S8E package?
The LT6370HS8E#TRPBF in the 8-lead plastic SOIC (S8E) package has θJA = 33°C/W, measured on a standard 2-layer JEDEC test board. This is significantly lower than MSOP (163°C/W) and DFN (43°C/W) variants, enabling higher power dissipation (up to 300mW) in convection-cooled industrial PCBs without heatsinking - a key advantage for the LT6370HS8E#TRPBF H-grade version.
LT6370HS8E#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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-SOIC-EP
LT6370HS8E#TRPBF FAQ
1.How can I place an order for LT6370HS8E#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6370HS8E#TRPBF 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 LT6370HS8E#TRPBF reliable?
The price and inventory of LT6370HS8E#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6370HS8E#TRPBF is usually 5 days.
3.What payment methods are accepted for LT6370HS8E#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6370HS8E#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6370HS8E#TRPBF?
LT6370HS8E#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6370HS8E#TRPBF 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 LT6370HS8E#TRPBF?
For technical support, including LT6370HS8E#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6370HS8E#TRPBF requirements.
6.How does Aetrix verify that LT6370HS8E#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT6370HS8E#TRPBF 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 LT6370HS8E#TRPBF meets industry standards.
7.What is the process for return or replacement of LT6370HS8E#TRPBF?
All LT6370HS8E#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6370HS8E#TRPBF, 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 LT6370HS8E#TRPBF part is unused and in its original packaging.
Return procedure for LT6370HS8E#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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