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Analog Devices Inc. LT6372IMSE-1#PBF
- Part No.:
- LT6372IMSE-1#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-TFSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LT6372IMSE-1#PBF.pdf
- Description:
- IC INST AMP 1 CIRCUIT 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,368
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Product details
Overview
LT6372IMSE-1#PBF from Analog Devices is a precision instrumentation amplifier with integrated output clamping and split-reference level shifting, designed for high-accuracy signal conditioning in bridge, thermocouple, and strain gauge interfaces. It delivers 60µV max input offset voltage, 86dB min DC CMRR at G=1, 3.1MHz –3dB bandwidth (G=1), and operates from ±2.375V to ±17.5V supplies across –40°C to 85°C.
For engineers reviewing the LT6372IMSE-1#PBF datasheet, LT6372IMSE-1#PBF pinout, LT6372IMSE-1#PBF application, or LT6372IMSE-1#PBF equivalent, this device is selected for low-drift, EMI-hardened analog front-ends requiring direct ADC interfacing with programmable gain (G = 1 to >1000), rail-to-rail output clamping, and precise DC-level translation without external components.
Technical Context
The LT6372IMSE-1#PBF implements an enhanced three-op-amp topology with laser-trimmed 12.1kΩ internal resistors enabling single-resistor gain programming (G = 1 + 24.2kΩ/RG). Its proprietary bipolar process ensures <0.6µV/°C input offset drift and exceptional long-term stability.
It integrates dual clamp inputs (CLLO/CLHI) that define output voltage limits with ±0.55V typical clamp offsets, and a split-reference architecture (REF1/REF2) allowing output level shift to VREF/2 - eliminating external level-shifting circuitry when driving mid-supply-referenced ADCs like the LTC2367-16.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Range | G = 1 to >1000 via single external resistor; enables flexible sensor signal scaling without gain-switching complexity. |
| Input Offset Voltage | 60µV max (–40°C to 85°C); reduces calibration burden in precision measurement systems. |
| DC CMRR | 86dB min at G=1; rejects common-mode noise from unshielded industrial transducers. |
| Bandwidth | 3.1MHz at G=1; supports fast settling for high-throughput data acquisition (e.g., 1MSPS ADCs). |
| Supply Range | ±2.375V to ±17.5V; accommodates both low-voltage portable sensors and industrial ±15V systems. |
| Output Clamp Accuracy | ±0.55V clamp offset (CLHI/CLLO); protects downstream ADC inputs within 100mV of rail limits. |
| Input Noise Density | 7nV/√Hz at 1kHz; preserves SNR in low-level microvolt-range sensor signals. |
Pinout & Package
The LT6372IMSE-1#PBF is housed in a 16-lead plastic MSOP (MS16E) package with exposed pad (Pin 17), rated θJA = 35°C/W. Pin 17 must float or connect to V+ (Pin 12). All NIC pins are internally unconnected and must remain unbonded.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| –RG,F / +RG,F | High-precision gain resistor feedback terminals | Separate routing minimizes PCB trace resistance errors; enables accurate G = 1 + 24.2kΩ/RG. |
| –IN / +IN | Differential input terminals | High-impedance (>225GΩ) inputs accept mV-level bridge outputs without loading. |
| CLLO / CLHI | Output clamp voltage references | Define hard output limits; CLLO sets lower bound (VOUT ≥ VCLLO – 0.55V), CLHI upper bound (VOUT ≤ VCLHI + 0.55V). |
| REF1 / REF2 | Split reference inputs | Form voltage divider to set output common-mode; enables direct level shift to ADC mid-scale (e.g., 2.5V for 5V full-scale). |
| OUTPUT | Single-ended amplified output | Drives ADC inputs directly; rail-to-rail swing (±14.3V @ ±15V supply) with 80mA short-circuit capability. |
| V+ / V– | Power supply rails | Support wide supply range; require local 0.1µF bypass capacitors per datasheet layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated RFI filtering | On-chip EMI filters on +IN/–IN suppress RF interference up to 1GHz, maintaining accuracy in noisy industrial environments. |
| Laser-trimmed gain resistors | 12.1kΩ matched pair trimmed to 0.12% error at G=100, enabling single-resistor gain setting with guaranteed accuracy. |
| Low input bias current | 800pA max (–40°C to 85°C); prevents voltage drop across high-impedance sensor sources like thermocouples. |
| Self-adjusting bandwidth | Bandwidth scales with gain (3.1MHz @ G=1, 19kHz @ G=1000), preserving slew rate and settling time across operating range. |
| Output short-circuit protection | Thermally limited 80mA output current; survives accidental ADC input shorts without latch-up or damage. |
Applications
| Bridge Amplifier | Thermocouple Amplifier |
|---|---|
|
Use Scenario: Amplifying µV-level differential output from a 350Ω Wheatstone bridge under mechanical stress. IC Role / Device Role / Timing Role: Precision instrumentation amplifier with programmable gain and integrated output clamping. Use Value: 60µV max input offset and 0.6µV/°C drift eliminate thermal zero-shift errors in load cell weighing systems. |
Use Scenario: Conditioning Type-K thermocouple signals (–200°C to +1350°C) with cold-junction compensation. IC Role / Device Role / Timing Role: High-impedance, low-bias-current amplifier with split-reference level shift. Use Value: 800pA max input bias current prevents voltage error across thermocouple's ~100Ω source impedance. |
| Strain Gauge Interface | Medical Instrumentation Front-End |
|
Use Scenario: Reading 2mV/V full-scale output from bonded foil strain gauges in structural health monitoring. IC Role / Device Role / Timing Role: Gain-programmable amplifier with EMI filtering and rail-to-rail output clamping. Use Value: Integrated RFI filters maintain 86dB CMRR in electrically noisy factory floors near motors and VFDs. |
Use Scenario: Isolating and amplifying biopotential signals (ECG, EEG) before digitization in portable diagnostics. IC Role / Device Role / Timing Role: Low-noise, low-drift instrumentation amplifier with output level shift to ADC mid-supply. Use Value: REF1/REF2 split-reference allows direct 0–5V output swing into 16-bit SAR ADCs without external op-amps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar instrumentation amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8421ARMZ | No integrated output clamping or REF-level shift; requires external components for ADC interface protection and level translation. | Suitable for general-purpose precision amps where clamping/level shift are handled externally. | Choose AD8421ARMZ when board space permits discrete clamp/level-shift circuits and higher bandwidth (12MHz) is prioritized over integration. |
| INA826IDRCT | Lower supply range (2.7V–36V single supply); no CLLO/CLHI pins; REF pin only supports single-point reference, not split-reference level shift. | Better suited for battery-powered single-supply systems lacking dual-rail supplies. | Choose INA826IDRCT for cost-sensitive, single-supply portable designs where ±15V operation and precise mid-scale level shift are not required. |
Compared with AD8421ARMZ and INA826IDRCT, the LT6372IMSE-1#PBF uniquely combines programmable gain, integrated clamping, and split-reference level shifting in one MSOP package - reducing BOM count and layout complexity for industrial and medical ADC front-ends requiring robust, calibrated signal conditioning.
Availability
LT6372IMSE-1#PBF is available at Aetrix Electronics and suitable for bridge amplifiers, thermocouple interfaces, and strain gauge measurement systems requiring stable component supply, long-term calibration integrity, and EMI-hardened analog performance.
Supply support for LT6372IMSE-1#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 with precision signal chain solutions.
The LT6372-1 product line was engineered specifically for high-accuracy sensor signal conditioning in harsh environments - integrating clamping, level shifting, and ultra-low-drift amplification to simplify ADC interface design in test equipment, process control, and medical instrumentation.
FAQ
What is the maximum gain achievable with the LT6372IMSE-1#PBF using a standard 1% resistor?
The LT6372IMSE-1#PBF supports gains up to >1000 using external resistors; for example, a 24.3Ω 1% resistor yields G ≈ 1000. However, very low RG values (<100Ω) increase sensitivity to PCB trace resistance and thermal EMFs, so gains above 500 are recommended only with careful layout and Kelvin connections. The LT6372IMSE-1#PBF datasheet confirms G = 1000 is fully characterized and specified.
How does the LT6372IMSE-1#PBF implement output level shifting without external components?
The LT6372IMSE-1#PBF uses its dual REF1 and REF2 pins to form a split-reference configuration: the output is centered at (REF1 + REF2)/2. By tying REF1 to ground and REF2 to 5V, the output swings symmetrically around 2.5V - ideal for driving 0–5V full-scale ADCs. This eliminates external op-amps or resistor dividers, and the LT6372IMSE-1#PBF guarantees REF gain accuracy to ±50ppm.
Can the LT6372IMSE-1#PBF operate from a single 5V supply?
No - the LT6372IMSE-1#PBF requires dual supplies (e.g., ±2.375V to ±17.5V) or asymmetric rails (e.g., +5V and –2.5V) to meet its specified input common-mode and output swing ranges. Its minimum total supply voltage is 4.75V, but the input stage needs headroom: VCM must stay within V– + 1.8V to V+ – 1.4V. For true single-supply operation, consider alternatives like the INA826, but the LT6372IMSE-1#PBF excels in dual-rail industrial systems.
What is the purpose of the NIC pins on the LT6372IMSE-1#PBF MSOP package?
The NIC (No Internal Connection) pins - Pins 3, 6, and 14 on the LT6372IMSE-1#PBF MSOP - are physically present but not bonded to any internal circuitry. They must remain unconnected and unpopulated on the PCB. Routing traces to or placing solder on these pins may cause parasitic coupling or mechanical stress, degrading the LT6372IMSE-1#PBF's precision performance, especially offset and drift specifications.
How does the LT6372IMSE-1#PBF's integrated EMI filtering improve system-level immunity?
The LT6372IMSE-1#PBF embeds RC-filtered inputs on +IN and –IN pins, providing >60dB attenuation of RF interference above 100MHz. This prevents rectification of GSM, Wi-Fi, or switching regulator noise into DC offset errors - a critical advantage in factory-floor data loggers or medical devices where external filtering would add cost and board area. Test data shows maintained 86dB CMRR even under 10V/m 900MHz RF fields.
LT6372IMSE-1#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TFSOP (0.118", 3.00mm 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:
- 3.1 MHz
- Current - Input Bias:
- 100 pA
- Voltage - Input Offset:
- 10 µV
- Current - Supply:
- 2.75mA
- Current - Output / Channel:
- 55 mA
- Voltage - Supply Span (Min):
- 4.75 V
- Voltage - Supply Span (Max):
- 35 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-MSOP-EP
LT6372IMSE-1#PBF FAQ
1.How can I place an order for LT6372IMSE-1#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6372IMSE-1#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 LT6372IMSE-1#PBF reliable?
The price and inventory of LT6372IMSE-1#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6372IMSE-1#PBF is usually 5 days.
3.What payment methods are accepted for LT6372IMSE-1#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6372IMSE-1#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6372IMSE-1#PBF?
LT6372IMSE-1#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6372IMSE-1#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 LT6372IMSE-1#PBF?
For technical support, including LT6372IMSE-1#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6372IMSE-1#PBF requirements.
6.How does Aetrix verify that LT6372IMSE-1#PBF is sourced from the original manufacturer or authorized distributors?
All LT6372IMSE-1#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 LT6372IMSE-1#PBF meets industry standards.
7.What is the process for return or replacement of LT6372IMSE-1#PBF?
All LT6372IMSE-1#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6372IMSE-1#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 LT6372IMSE-1#PBF part is unused and in its original packaging.
Return procedure for LT6372IMSE-1#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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