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Analog Devices Inc. LT6370HS8E#PBF
- Part No.:
- LT6370HS8E#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
LT6370HS8E#PBF.pdf
- Description:
- IC INST AMP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:133
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Product details
Overview
LT6370HS8E#PBF from Analog Devices is a high-precision, gain-programmable instrumentation amplifier in an 8-lead SOIC package (S8E), delivering 25µV max input offset voltage, 0.3µV/°C max drift, 94dB min DC CMRR at G=1, and 3.1MHz bandwidth - designed for precision bridge and thermocouple signal conditioning in industrial sensor interfaces.
For engineers reviewing the LT6370HS8E#PBF datasheet, LT6370HS8E#PBF pinout, LT6370HS8E#PBF application, or LT6370HS8E#PBF equivalent, this page provides verified DC accuracy specs, thermal stability data, EMI-filtered input architecture, and H-grade (–40°C to 125°C) qualification essential for harsh-environment transducer systems.
Technical Context
The LT6370HS8E#PBF implements an enhanced three-op-amp topology with laser-trimmed 12.1kΩ internal resistors and proprietary bipolar process technology to achieve ultra-low drift and long-term stability. Its gain is set by a single external resistor RG per G = 1 + 24.2kΩ/RG, enabling precise programmability from 1 to >1000.
Integrated RFI filters on both inputs maintain DC accuracy under RF interference, while the REF pin supports differential-to-single-ended conversion with ±10V reference gain. The device operates from ±2.375V to ±17.5V supplies and guarantees performance across –40°C to 125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 25µV max - enables detection of sub-millivolt signals without calibration drift over temperature. |
| Offset Drift | 0.3µV/°C max - ensures <±0.5µV total drift over full –40°C to 125°C range for stable long-term measurements. |
| DC CMRR | 94dB min at G=1 - rejects common-mode noise from unshielded industrial wiring and ground loops. |
| 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 - accommodates legacy ±15V rails and low-voltage ±5V systems without level-shifting. |
| Input Bias Current | 400pA max - preserves signal integrity with high-impedance sources like piezoresistive bridges and thermocouples. |
| EMI Filtering | Integrated on-chip RFI filters - eliminates need for external RC networks in EN 61000-4-3 compliant designs. |
Pinout & Package
LT6370HS8E#PBF uses the industry-standard 8-lead plastic SOIC (S8E) package with exposed pad floating or connected to V+, θJA = 33°C/W, and conventional instrumentation amplifier pinout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| –RG (Pin 1) | Gain-setting resistor terminal | Connects to one end of external RG; sets gain via G = 1 + 24.2kΩ/RG with 0.08% accuracy at G=100. |
| –IN (Pin 2) | Negative input | High-impedance (225GΩ) differential input node; accepts balanced sensor signals with minimal loading. |
| +IN (Pin 3) | Positive input | High-impedance (225GΩ) differential input node; paired with –IN for bridge/thermocouple sensing. |
| V– (Pin 4) | Negative supply rail | Requires local 0.1µF bypass capacitor to ground; supports operation down to –2.375V. |
| REF (Pin 5) | Output reference | Sets output common-mode level; supports ±10V reference gain with 1ppm/V PSRR rejection. |
| OUTPUT (Pin 6) | Differential-to-single-ended output | Delivers amplified, referenced output; drives 2kΩ loads with ±14.9V swing at ±15V supplies. |
| V+ (Pin 7) | Positive supply rail | Requires local 0.1µF bypass capacitor to ground; supports operation up to +17.5V. |
| +RG (Pin 8) | Gain-setting resistor terminal | Connects to other end of external RG; completes gain-setting path with –RG. |
Key Features
| Feature | Design Value |
|---|---|
| Laser-trimmed precision | Guarantees 25µV VOS and 0.3µV/°C drift via on-die trimming - eliminates post-manufacture calibration. |
| Single-resistor gain programming | G = 1 to >1000 set by one external RG - reduces BOM count and layout complexity vs multi-resistor alternatives. |
| Integrated EMI filtering | On-chip RFI filters on +IN/–IN pins - maintains 94dB CMRR in noisy factory environments without external components. |
| H-grade temperature rating | Specified from –40°C to 125°C - qualified for under-hood automotive, motor control, and industrial power electronics. |
| Low-noise architecture | 0.2µVP-P (0.1Hz–10Hz) and 7nV/√Hz @ 1kHz - preserves SNR in µV-level strain gauge and thermocouple applications. |
Applications
| Bridge Amplifier | Data Acquisition |
|---|---|
Use Scenario: Amplifying mV-level outputs from load cells and pressure sensors in weigh scales and industrial automation. IC Role / Device Role / Timing Role: Precision instrumentation amplifier providing differential gain, common-mode rejection, and REF-referenced output. Use Value: 25µV offset and 0.3µV/°C drift enable direct 16-bit ADC interfacing without zero-span calibration over temperature. | Use Scenario: High-channel-count multiplexed sensor systems requiring fast settling and consistent gain accuracy. IC Role / Device Role / Timing Role: Signal-conditioning front-end with 3.1MHz bandwidth and <5.8µs settling to 0.0015% at G=1. Use Value: Enables 100kSPS aggregate sampling across 16 channels using a single ADC and analog mux. |
| Thermocouple Amplifier | Strain Gauge Amplifier |
Use Scenario: Cold-junction compensation and linearization of Type-K/J thermocouples in HVAC and furnace controls. IC Role / Device Role / Timing Role: Low-drift, high-impedance amplifier rejecting millivolt-level thermocouple EMF with 94dB CMRR. Use Value: 0.3µV/°C drift translates to <±0.05°C error over 125°C span - meets Class 1 thermocouple accuracy standards. | Use Scenario: Wheatstone bridge readout in structural health monitoring and torque sensing. IC Role / Device Role / Timing Role: Bridge excitation interface with integrated gain programming and EMI-hardened inputs. Use Value: On-chip RFI filters suppress 80–2000MHz RF noise from variable-frequency drives, preserving bridge signal integrity. |
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 35nV/√Hz noise, 100µV max VOS, no integrated EMI filter, 10-lead MSOP only | Lower precision; requires external RFI filtering for EMC compliance | Choose AD8421ARZ only when cost sensitivity outweighs drift/noise requirements and PCB space allows added filtering. |
| INA128UA | 125µV max VOS, 2µV/°C drift, 1MHz BW, SO-8 but no H-grade option | Not rated for >85°C; unsuitable for under-hood or high-temp industrial use | Select INA128UA only for ambient-temperature lab equipment where extended temperature range is unnecessary. |
Compared with AD8421ARZ and INA128UA, the LT6370HS8E#PBF delivers 5× lower offset drift, integrated EMI protection, and guaranteed H-grade operation - making it the sole choice for high-stability, high-EMI, wide-temperature applications.
Availability
LT6370HS8E#PBF is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive engine control units, and medical diagnostic equipment requiring stable component supply across extended temperature ranges.
Supply support for LT6370HS8E#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.
The LT6370 product line was engineered for ultra-precision, low-drift signal conditioning in harsh environments - targeting applications where traditional instrumentation amplifiers fail due to thermal drift or EMI susceptibility.
FAQ
What is the maximum gain achievable with LT6370HS8E#PBF?
The LT6370HS8E#PBF supports gains from 1 to >1000 using a single external resistor RG per G = 1 + 24.2kΩ/RG. At G=1000, RG = 24.3Ω; however, PCB trace resistance becomes significant below ~100Ω, so practical maximum gain is ~500 for production designs. The LT6370HS8E#PBF datasheet confirms this limit in Note 2.
Does LT6370HS8E#PBF require external capacitors for stability?
Yes - LT6370HS8E#PBF requires 0.1µF ceramic bypass capacitors between V+ and ground, and V– and ground, placed within 5mm of the pins. No external compensation is needed for unity-gain stability, but capacitive loads >100pF require series isolation resistors per Figure 46 in the LT6370HS8E#PBF datasheet.
How does the REF pin function in LT6370HS8E#PBF?
The REF pin in LT6370HS8E#PBF sets the output common-mode voltage. When driven with a voltage, the output equals G × (V+IN – V–IN) + VREF, with ±10V reference gain and ±20ppm/V PSRR. It enables differential-to-single-ended conversion and level-shifting without external op-amps - a core feature of the LT6370HS8E#PBF architecture.
Is LT6370HS8E#PBF pin-compatible with older instrumentation amplifiers?
No - LT6370HS8E#PBF uses a nonstandard SOIC pinout: Pin 1 is –RG (not V–), Pin 4 is V–, and Pin 5 is REF. It is not pin-compatible with INA128, AD620, or AD8221. Layout redesign is required; refer to the LT6370HS8E#PBF pin configuration diagram on page 4 of the datasheet.
What is the thermal performance of LT6370HS8E#PBF in the S8E package?
The LT6370HS8E#PBF in the S8E package has θJA = 33°C/W and θJC = 5°C/W. At 2.9mA supply current and ±15V supplies, power dissipation is ~87mW; junction temperature rise is ≤2.9°C above ambient under typical conditions. The exposed pad must float or connect to V+ per datasheet guidance to avoid thermal derating.
LT6370HS8E#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- 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:
- 25 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#PBF FAQ
1.How can I place an order for LT6370HS8E#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6370HS8E#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 LT6370HS8E#PBF reliable?
The price and inventory of LT6370HS8E#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6370HS8E#PBF is usually 5 days.
3.What payment methods are accepted for LT6370HS8E#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6370HS8E#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6370HS8E#PBF?
LT6370HS8E#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6370HS8E#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 LT6370HS8E#PBF?
For technical support, including LT6370HS8E#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6370HS8E#PBF requirements.
6.How does Aetrix verify that LT6370HS8E#PBF is sourced from the original manufacturer or authorized distributors?
All LT6370HS8E#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 LT6370HS8E#PBF meets industry standards.
7.What is the process for return or replacement of LT6370HS8E#PBF?
All LT6370HS8E#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6370HS8E#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 LT6370HS8E#PBF part is unused and in its original packaging.
Return procedure for LT6370HS8E#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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