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Analog Devices Inc. LTC2372HUH-16#PBF
- Part No.:
- LTC2372HUH-16#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
LTC2372HUH-16#PBF.pdf
- Description:
- IC ADC 16BIT SAR 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,778
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Product details
Overview
LTC2372HUH-16#PBF from Analog Devices (formerly Linear Technology) is a 16-bit, 500ksps, 8-channel successive approximation register (SAR) analog-to-digital converter with integrated 2.048V temperature-compensated reference and programmable sequencer. It supports fully differential (±4.096V), pseudo-differential unipolar (0V to 4.096V), and pseudo-differential bipolar (±2.048V) input ranges, achieves ±1LSB INL (max), 96dB SNR (fully differential), and operates across –40°C to +125°C - ideal for high-precision industrial data acquisition in harsh thermal environments.
For engineers reviewing the LTC2372HUH-16#PBF datasheet, LTC2372HUH-16#PBF pinout, LTC2372HUH-16#PBF application, or LTC2372HUH-16#PBF equivalent, this device delivers guaranteed operation to 125°C, no missing codes at 16 bits, SPI-compatible serial interface with 1.8V–5V I/O support, low crosstalk multiplexer, and automatic nap/sleep modes for dynamic power scaling - critical for ATE, PLC, and portable instrumentation designs requiring metrology-grade accuracy and extended temperature reliability.
Technical Context
The LTC2372HUH-16#PBF implements a true SAR architecture with no pipeline delay or cycle latency, enabling deterministic conversion timing and immediate result availability. Its internal oscillator eliminates external clock dependency, while the 16-deep programmable sequencer enables autonomous channel scanning without host intervention.
It integrates a low-drift (≤20ppm/°C) 2.048V reference with dedicated buffer, supporting both REFIN and REFBUF overdrive modes. Input multiplexer features selectable common-mode range, 71–73dB CMRR, and <–107dB channel-to-channel crosstalk - ensuring signal integrity in multi-sensor systems with mixed unipolar/bipolar sources.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes - guarantees full dynamic range utilization and monotonicity in closed-loop control and precision measurement. |
| Throughput Rate | 500ksps maximum - supports real-time sampling of signals up to 22MHz bandwidth (–3dB input linear bandwidth). |
| INL Error | ±1LSB maximum over full temperature range - ensures end-point accuracy for calibration-critical applications like sensor front-ends and metrology. |
| SNR | 96dB typical (fully differential, fIN = 1kHz) - enables >15.6 effective number of bits (ENOB) for high-fidelity signal capture. |
| Power Dissipation | 27mW at 500ksps; 300µW in sleep mode - allows thermal-constrained embedded systems to maintain performance while minimizing heat generation. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive, downhole oil & gas, and industrial motor drive monitoring. |
| Reference | Onboard 2.048V ±0.25% (2.043V–2.053V), 20ppm/°C max drift - eliminates need for external precision reference and reduces BOM count. |
Pinout & Package
32-lead 5mm × 5mm QFN package (UH) with exposed pad soldered to PCB ground. Pin 33 (exposed pad) is GND and must be thermally and electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH7 | Analog input channels | Eight single-ended inputs configurable as fully differential pairs or pseudo-differential; support ±4.096V, 0–4.096V, or ±2.048V ranges. |
| COM | Common-mode reference | Provides return path for pseudo-differential configurations; sets VCM for bipolar/unipolar modes. |
| MUXOUT+, MUXOUT– | Multiplexer output | Direct access to mux output stage - enables external signal conditioning or diagnostic probing before ADC core. |
| ADCIN+, ADCIN– | SAR core inputs | Dedicated differential inputs to conversion engine; bypasses mux for direct high-speed sampling of one channel. |
| CNV | Conversion start | Edge-triggered command initiates sample-and-hold and conversion; supports burst or single-shot operation. |
| BUSY | Conversion status | Active-high open-drain signal indicates ongoing conversion - used for timing synchronization without polling. |
| SDO, SDI, SCK, RDL | SPI interface | Full-duplex SPI with 1.8V–5V logic compatibility; RDL enables tri-state control of SDO for daisy-chaining multiple devices. |
| REFIN, REFBUF | Reference inputs | REFIN accepts external 2.048V reference; REFBUF accepts 2.5V–5V overdrive voltage to scale internal buffer output to 4.096V or 5V. |
| VDD, OVDD, GND | Power supplies | VDD = 4.75–5.25V analog supply; OVDD = 1.71–5.25V digital I/O supply - enables mixed-voltage system interfacing. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay / zero cycle latency | Immediate data availability after CNV edge - essential for time-critical feedback loops and trigger-based acquisition. |
| Programmable 16-deep sequencer | Autonomous channel selection without host CPU involvement - reduces firmware overhead and improves sampling determinism. |
| Selectable digital gain compression | Configurable output scaling to optimize dynamic range usage for small-signal or rail-to-rail inputs. |
| Low crosstalk 8-channel multiplexer | <–107dB isolation between active and inactive channels - preserves signal fidelity in dense multi-sensor arrays. |
| Internal reference buffer with wake-up control | REFBUF enables 4.096V or 5V reference output; tWAKE = 200ms allows controlled power-up sequencing in low-power systems. |
Applications
| Industrial Process Control | High-Speed Data Acquisition |
|---|---|
|
Use Scenario: Monitoring temperature, pressure, and flow sensors in distributed control systems with ambient temperatures up to 125°C. IC Role / Device Role / Timing Role: Precision front-end ADC capturing synchronized multi-channel analog inputs with deterministic timing and minimal latency. Use Value: ±1LSB INL and 96dB SNR ensure calibrated sensor outputs meet IEC 61000-4-3 immunity requirements while maintaining traceability to NIST standards. |
Use Scenario: Real-time waveform capture in automated test equipment (ATE) for semiconductor parametric testing. IC Role / Device Role / Timing Role: High-throughput 16-bit digitizer with 500ksps sustained rate and no missing codes for pass/fail binning of analog parameters. Use Value: 22MHz input bandwidth and <4psRMS aperture jitter enable accurate reconstruction of fast transients and harmonic content up to 10th order. |
| Programmable Logic Controllers | Portable Instrumentation |
|
Use Scenario: Modular I/O modules in PLC backplanes requiring hot-swappable, wide-temperature ADCs with robust EMI immunity. IC Role / Device Role / Timing Role: Isolated analog input conditioner with integrated reference and SPI interface compatible with 3.3V/5V controller buses. Use Value: 71–73dB CMRR and PSRR >60dB across 1Hz–100kHz suppress common-mode noise from motor drives and switching power supplies. |
Use Scenario: Battery-powered handheld multimeters and oscilloscopes needing ultra-low power consumption without sacrificing resolution. IC Role / Device Role / Timing Role: Power-aware ADC with nap mode (6.25mW) and sleep mode (300µW) that scales with sampling rate and duty cycle. Use Value: 27mW at full rate extends battery life in Class I, Division 2 hazardous location instruments while maintaining 16-bit linearity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7606C-16 | 8-channel, 16-bit, 1MSPS; on-chip 2.5V reference; parallel + SPI interface; –40°C to +125°C rating. | Higher throughput and parallel bus option; lacks programmable sequencer and digital gain compression. | Preferred when system requires faster sampling or FPGA/ASIC parallel interfacing; requires external anti-aliasing filter due to higher Nyquist frequency. |
| ADS8688IPWR | 8-channel, 16-bit, 500ksps; internal 4.096V reference; SPI-only; –40°C to +125°C; integrated PGA (±10.24V input range). | Includes programmable gain amplifier; no fully differential input mode; lower SNR (92dB typical). | Chosen for systems with variable sensor output amplitudes requiring on-chip gain adjustment; trades SNR for input flexibility. |
Compared with AD7606C-16 and ADS8688IPWR, the LTC2372HUH-16#PBF uniquely combines guaranteed 125°C operation, fully differential input capability, and a low-crosstalk multiplexer with built-in reference buffer wake-up control - making it optimal for thermally demanding, noise-sensitive, multi-range analog acquisition where deterministic timing and metrological accuracy are non-negotiable.
Availability
LTC2372HUH-16#PBF is available at Aetrix Electronics and suitable for industrial process control, high-speed data acquisition, and portable instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC2372HUH-16#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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies.
The LTC2372HUH-16#PBF belongs to Linear's precision SAR ADC product line, engineered for applications demanding metrology-grade accuracy, low power, and extended temperature reliability in industrial, aerospace, and test equipment.
FAQ
What is the maximum operating temperature specification for the LTC2372HUH-16#PBF?
The LTC2372HUH-16#PBF is rated for continuous operation from –40°C to +125°C, with all key specifications - including ±1LSB INL, 96dB SNR, and 500ksps throughput - guaranteed across this full range. This H-grade qualification makes the LTC2372HUH-16#PBF suitable for under-hood automotive, downhole sensing, and industrial motor control applications where ambient thermal stress exceeds commercial or industrial grade limits.
Does the LTC2372HUH-16#PBF require an external reference, or does it include an internal one?
The LTC2372HUH-16#PBF integrates a precision 2.048V temperature-compensated reference with ≤20ppm/°C drift and a dedicated reference buffer (REFBUF). It can operate using this internal reference alone, or accept an external 2.048V source via REFIN. The REFBUF pin also supports overdrive (2.5V–5V) to generate 4.096V or 5V buffered reference outputs - eliminating the need for external references in most precision applications.
How does the programmable sequencer in the LTC2372HUH-16#PBF improve system design?
The LTC2372HUH-16#PBF features a 16-deep programmable sequencer that autonomously cycles through user-defined channel configurations without host processor intervention. This reduces firmware complexity, eliminates software-induced timing jitter, and enables deterministic multi-channel sampling - especially valuable in PLC scan cycles, synchronized sensor arrays, and ATE pattern generators where precise inter-channel timing is critical.
What power-saving modes does the LTC2372HUH-16#PBF support, and how do they function?
The LTC2372HUH-16#PBF offers two low-power states: Nap Mode (6.25mW) automatically engages between conversions at 500ksps, scaling linearly with reduced sample rate; Sleep Mode (300µW) disables the reference buffer and core circuitry until awakened by CNV or RESET. Both modes retain register settings and eliminate startup delays - enabling rapid resumption of acquisition in battery-powered or energy-harvesting systems.
Can the LTC2372HUH-16#PBF interface directly with 1.8V microcontrollers?
Yes. The LTC2372HUH-16#PBF supports 1.8V–5V logic levels on its OVDD supply and SPI interface pins (SDO, SDI, SCK, RDL), allowing seamless connection to 1.8V, 2.5V, 3.3V, or 5V controllers without level shifters. VIH and VIL thresholds are defined as 0.8×OVDD and 0.2×OVDD respectively, ensuring robust noise margins and interoperability across mixed-voltage embedded systems.
LTC2372HUH-16#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 32-WFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 500k
- Number of Inputs:
- 8
- Input Type:
- Differential, Pseudo-Differential
- Data Interface:
- SPI
- Configuration:
- MUX-S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 32-QFN (5x5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2372HUH-16#PBF FAQ
1.How can I place an order for LTC2372HUH-16#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2372HUH-16#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 LTC2372HUH-16#PBF reliable?
The price and inventory of LTC2372HUH-16#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2372HUH-16#PBF is usually 5 days.
3.What payment methods are accepted for LTC2372HUH-16#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2372HUH-16#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2372HUH-16#PBF?
LTC2372HUH-16#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2372HUH-16#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 LTC2372HUH-16#PBF?
For technical support, including LTC2372HUH-16#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2372HUH-16#PBF requirements.
6.How does Aetrix verify that LTC2372HUH-16#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2372HUH-16#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 LTC2372HUH-16#PBF meets industry standards.
7.What is the process for return or replacement of LTC2372HUH-16#PBF?
All LTC2372HUH-16#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2372HUH-16#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 LTC2372HUH-16#PBF part is unused and in its original packaging.
Return procedure for LTC2372HUH-16#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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