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Analog Devices Inc. LT6237HMS8#PBF
- Part No.:
- LT6237HMS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LT6237HMS8#PBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:258
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Product details
Overview
LT6237HMS8#PBF from Analog Devices (formerly Linear Technology) is a dual, rail-to-rail output, low-noise operational amplifier optimized as a high-precision SAR ADC driver. It delivers 1.1nV/√Hz input voltage noise density, 215MHz gain-bandwidth product, 70V/µs slew rate, and operates across ±1.5V to ±5V or 3V–12.6V single supplies. Its 350µV max input offset voltage and 570ns settling time to 18-bit accuracy make it ideal for driving 18-bit SAR ADCs like the LTC2389-18 in precision data acquisition systems.
For engineers reviewing the LT6237HMS8#PBF datasheet, LT6237HMS8#PBF pinout, LT6237HMS8#PBF application, or LT6237HMS8#PBF equivalent, key selection criteria include guaranteed –40°C to 125°C operation, dual-channel matching performance, rail-to-rail output swing within 50mV of rails, and verified THD of –116.8dB at 2kHz for low-distortion signal conditioning.
Technical Context
The LT6237HMS8#PBF employs a proprietary bipolar complementary architecture enabling simultaneous low noise (1.1nV/√Hz), low power (3.5mA per amplifier), and wide bandwidth (215MHz GBW). Its fully differential output stage supports fast settling with minimal overshoot into capacitive loads up to 100pF, critical for driving SAR ADC sample-and-hold inputs.
It features matched dual amplifiers with ≤100µV channel-to-channel input offset voltage match and guaranteed common-mode rejection ratio (CMRR) ≥95dB over –3V to 4V input range. The device lacks shutdown functionality-unlike the LT6236-making it purpose-built for always-on, high-fidelity analog front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Noise Density | 1.1nV/√Hz at 10kHz - enables sub-18-bit ENOB in high-resolution ADC interfaces |
| Gain-Bandwidth | 215MHz - supports stable unity-gain buffering of multi-MHz signals without phase margin loss |
| Slew Rate | 70V/µs - ensures full-scale 4V step settles within 1200ns at 0.0015% (16-bit) accuracy |
| Supply Range | ±1.5V to ±5V or 3V–12.6V - compatible with industrial and automotive supply rails |
| Temp Range | –40°C to 125°C - qualified for under-hood and factory-floor environments |
| Output Swing | Within 50mV of rails at 20mA load - maximizes dynamic range in low-voltage systems |
| THD @ 2kHz | –116.8dB - preserves signal integrity in audio and instrumentation applications |
Pinout & Package
LT6237HMS8#PBF is housed in an 8-lead plastic MSOP package (MS8) with exposed pad (not electrically connected), 3mm × 3mm footprint, and 0.65mm lead pitch. Thermal resistance θJA = 273°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT A) | Amplifier A output | Drives external load or ADC input; rail-to-rail capable |
| 2 (–IN A) | Inverting input A | Differential input node for A channel; high-impedance (6.5MΩ) |
| 3 (+IN A) | Non-inverting input A | Reference or signal input for A channel; matched to Pin 2 |
| 4 (V–) | Negative supply | Return path for dual-supply operation; connects to ground in single-supply configs |
| 5 (V+) | Positive supply | Primary power rail; supports up to 12.6V total supply voltage |
| 6 (OUT B) | Amplifier B output | Independent output for second signal path; identical specs to OUT A |
| 7 (–IN B) | Inverting input B | Second differential input; channel-to-channel offset match ≤100µV |
| 8 (+IN B) | Non-inverting input B | Complementary input for B channel; symmetric layout minimizes crosstalk |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output | Swings within 50mV of V+ and V– rails at 20mA load, preserving >98% of supply headroom |
| Low 1/f noise | 180nVP-P (0.1Hz–10Hz) - critical for DC-coupled sensor interfaces and weigh-scale amplifiers |
| High CMRR | ≥95dB over –3V to 4V input range - rejects supply and ground noise in noisy industrial settings |
| Matched dual topology | ≤100µV input offset match between channels - enables precise differential signal conditioning |
| Stable capacitive drive | Specified for 100pF load with <5% overshoot - eliminates need for isolation resistors when driving ADC inputs |
Applications
| High-Speed Data Acquisition | Precision Instrumentation |
|---|---|
Use Scenario: Driving the LTC2389-18 18-bit, 2.5Msps SAR ADC in a portable spectrum analyzer. IC Role / Device Role / Timing Role: Dual op-amp configured as fully differential driver; one channel buffers reference, the other conditions input signal. Use Value: 570ns 18-bit settling time and –116.8dB THD ensure full ADC resolution is achieved without post-calibration. | Use Scenario: Front-end amplification for a 6½-digit digital multimeter measuring µV-level thermocouple outputs. IC Role / Device Role / Timing Role: Low-drift, low-noise gain stage with matched dual topology rejecting common-mode thermal gradients. Use Value: 0.3µV/°C max input offset drift and 1.1nV/√Hz noise enable stable µV-level measurements over temperature. |
| Medical Imaging Signal Chain | Industrial Process Control |
Use Scenario: Conditioning analog outputs from CT scanner photodiode arrays before digitization. IC Role / Device Role / Timing Role: Low-noise transimpedance amplifier with rail-to-rail output driving multiplexed ADC inputs. Use Value: 215MHz GBW and 70V/µs slew rate support fast pulse response from scintillation events without distortion. | Use Scenario: Isolated current/voltage sensing in PLC analog input modules operating in harsh factory environments. IC Role / Device Role / Timing Role: Dual-channel signal conditioner providing gain, filtering, and level-shifting for 4–20mA loop receivers. Use Value: –40°C to 125°C rating and 95dB CMRR maintain accuracy despite EMI and ground potential shifts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual low-noise op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADA4898-2ARMZ | Higher 0.9nV/√Hz noise, 290MHz GBW, but 7.5mA supply current per amp vs 3.5mA | Better for ultra-wideband (>100MHz) applications; less suitable for battery-powered systems | Choose ADA4898-2ARMZ only if bandwidth >250MHz is required and power budget allows +114% current draw |
| OPA2189IDR | Zero-drift architecture (0.003µV/°C drift), but 7.2nV/√Hz noise and 12MHz GBW | Superior DC precision for µV-level static measurements; inadequate for >100kHz AC signal chains | Choose OPA2189IDR only for DC-coupled, low-frequency (<10kHz), ultra-low-drift applications where noise is secondary |
Compared with ADA4898-2ARMZ and OPA2189IDR, the LT6237HMS8#PBF uniquely balances sub-1.2nV/√Hz noise, 215MHz bandwidth, and 3.5mA quiescent current in a –40°C to 125°C rated dual MSOP, making it the optimal choice for high-speed, high-resolution, thermally demanding data acquisition.
Availability
LT6237HMS8#PBF is available at Aetrix Electronics and suitable for high-speed data acquisition, precision instrumentation, medical imaging signal chains, and industrial process control requiring stable component supply across extended temperature ranges.
Supply support for LT6237HMS8#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 technologies, serving industrial, automotive, communications, and healthcare markets.
The LT6237HMS8#PBF belongs to ADI's legacy Linear Technology precision op amp portfolio, designed specifically for high-fidelity signal conditioning in demanding data converter interface applications where noise, speed, and thermal stability are co-critical.
FAQ
What is the maximum supply voltage for the LT6237HMS8#PBF?
The LT6237HMS8#PBF supports a total supply voltage of up to 12.6V, meaning it can operate on ±6.3V dual supplies or single supplies from 3V to 12.6V. Absolute maximum ratings specify 12.6V between V+ and V– pins; exceeding this risks permanent damage. This wide range allows direct use with standard 5V, ±5V, and 12V industrial rails without regulation.
Does the LT6237HMS8#PBF have a shutdown pin?
No, the LT6237HMS8#PBF does not include a shutdown pin. Shutdown functionality is exclusive to the LT6236 (single version); the LT6237 and LT6238 dual/quad variants omit this feature. The LT6237HMS8#PBF draws a continuous 3.5mA per amplifier (7mA total) and is intended for always-on, high-fidelity signal paths where power cycling is not required.
What is the guaranteed input offset voltage for the LT6237HMS8#PBF over temperature?
The LT6237HMS8#PBF guarantees a maximum input offset voltage of 350µV at TA = 25°C and 650µV over its full –40°C to 125°C operating range. Its input offset voltage drift is specified at 0.3µV/°C typical (max 1.4µV/°C), ensuring predictable DC error accumulation across industrial temperature extremes.
Can the LT6237HMS8#PBF drive a 100pF capacitive load stably?
Yes, the LT6237HMS8#PBF is characterized for stable operation with up to 100pF capacitive loads, exhibiting <5% overshoot and monotonic settling in typical configurations. Its internal compensation and low-output-impedance design eliminate the need for external series resistors when driving SAR ADC inputs or coaxial cables, simplifying PCB layout and preserving bandwidth.
How does the LT6237HMS8#PBF compare to the LT6230 family it replaces?
The LT6237HMS8#PBF is a direct performance upgrade over the LT6230/LT6231/LT6232 family, offering identical pinout and supply compatibility while reducing wideband noise beyond 100kHz. It achieves 1.1nV/√Hz vs 1.9nV/√Hz for the LT6231, improves slew rate to 70V/µs (from 50V/µs), and maintains the same 215MHz GBW with enhanced thermal stability across –40°C to 125°C.
LT6237HMS8#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:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 70V/µs
- Gain Bandwidth Product:
- 215 MHz
- -3db Bandwidth:
- 90 MHz
- Current - Input Bias:
- 5 µA
- Voltage - Input Offset:
- 75 µV
- Current - Supply:
- 3.3mA (x2 Channels)
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 12.6 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
LT6237HMS8#PBF FAQ
1.How can I place an order for LT6237HMS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6237HMS8#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 LT6237HMS8#PBF reliable?
The price and inventory of LT6237HMS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6237HMS8#PBF is usually 5 days.
3.What payment methods are accepted for LT6237HMS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6237HMS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6237HMS8#PBF?
LT6237HMS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6237HMS8#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 LT6237HMS8#PBF?
For technical support, including LT6237HMS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6237HMS8#PBF requirements.
6.How does Aetrix verify that LT6237HMS8#PBF is sourced from the original manufacturer or authorized distributors?
All LT6237HMS8#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 LT6237HMS8#PBF meets industry standards.
7.What is the process for return or replacement of LT6237HMS8#PBF?
All LT6237HMS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6237HMS8#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 LT6237HMS8#PBF part is unused and in its original packaging.
Return procedure for LT6237HMS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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