My Inquiry
My Account
Analog Devices Inc. LTC2372HUH-18#PBF
- Part No.:
- LTC2372HUH-18#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
LTC2372HUH-18#PBF.pdf
- Description:
- IC ADC 18BIT SAR 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,858
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC2372HUH-18#PBF from Analog Devices (formerly Linear Technology) is an 18-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 ±2.75LSB max INL and 100dB typical SNR (fully differential), and operates across –40°C to +125°C for high-reliability industrial data acquisition.
For engineers reviewing the LTC2372HUH-18#PBF datasheet, LTC2372HUH-18#PBF pinout, LTC2372HUH-18#PBF application, or LTC2372HUH-18#PBF equivalent, this page delivers verified specifications, validated package mapping, confirmed SPI-compatible serial interface behavior, thermal-grade performance data, and real-world application context for precision multichannel sampling in harsh environments.
Technical Context
The LTC2372HUH-18#PBF implements a low-crosstalk 8-channel analog multiplexer with per-channel input range selection, enabling flexible signal routing without external switching. Its internal oscillator eliminates external clock dependency, and the no-pipeline-delay architecture ensures deterministic latency of 1.5µs conversion time with zero cycle latency.
It features a single-shot-capable reference buffer, programmable digital gain compression, and a 16-deep sequencer supporting automatic channel scanning. Power management includes nap mode (1.25mA at 500ksps) and sleep mode (300µW), scaling dissipation with throughput while maintaining guaranteed operation to 125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 18-bit with no missing codes - guarantees monotonicity and full code coverage for high-fidelity measurement systems. |
| Sampling Rate | 500ksps maximum - enables real-time capture of signals up to 22MHz bandwidth (–3dB input linear bandwidth). |
| INL (max) | ±2.75LSB - ensures accurate end-point linearity critical for calibration-sensitive instrumentation and control loops. |
| SNR (typ) | 100dB (fully diff) / 95dB (pseudo-diff) - delivers >16.6 effective bits for low-noise sensor interfaces and spectral analysis. |
| Reference | Onboard 2.048V ±5mV (20ppm/°C max) - eliminates external reference design, reduces BOM count, and improves thermal stability. |
| Supply | Single 5V VDD with 1.8V–5V I/O - simplifies level-shifting in mixed-voltage systems and supports direct interfacing to FPGA/ASIC logic. |
| Power (500ksps) | 27mW typical - enables dense channel-count designs without excessive thermal load or cooling requirements. |
| Operating Temp | –40°C to +125°C - qualified for under-hood automotive, downhole oil & gas, and industrial motor drive applications. |
Pinout & Package
32-lead 5mm × 5mm QFN package (UH) with exposed pad soldered to PCB ground. Pin 33 is exposed thermal pad (GND). Package meets JEDEC MO-220 standards and supports reflow assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH7 | Analog input channels | Eight independent single-ended or differential-capable inputs; configurable via sequencer for automated scanning. |
| COM | Common-mode reference | Provides return path for pseudo-differential modes; sets common-mode voltage for fully differential operation. |
| ADCIN+, ADCIN– | Dedicated differential input pair | High-precision dedicated input for highest SNR; bypasses multiplexer for lowest noise and crosstalk. |
| MUXOUT+, MUXOUT– | Multiplexer output pair | Outputs selected channel's differential signal post-mux; used for external signal conditioning or monitoring. |
| REFIN, REFBUF | Reference input/buffer output | REFIN accepts 1.25V–2.4V external reference; REFBUF provides 4.096V buffered output when overdriven (REFIN = 0V). |
| SDO, SDI, SCK, RDL, BUSY, CNV | SPI-compatible digital interface | Supports 1.8V–5V logic levels; CNV initiates conversion; BUSY indicates active conversion; RDL enables tri-state output. |
| VDD, OVDD, GND | Power supply terminals | VDD powers analog core (4.75V–5.25V); OVDD powers digital I/O (1.71V–5.25V); multiple GND pins minimize ground bounce. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable sequencer (16-deep) | Enables autonomous multi-channel acquisition without host intervention-reduces CPU overhead in PLC and DAQ systems. |
| Selectably configurable input ranges | Per-channel selection of fully diff (±4.096V), pseudo-diff unipolar (0–4.096V), or pseudo-diff bipolar (±2.048V) optimizes dynamic range per sensor type. |
| No pipeline delay / zero cycle latency | Delivers immediate, deterministic sample availability-essential for closed-loop control and time-critical event capture. |
| Channel-to-channel crosstalk: –107dB | Ensures signal integrity in high-density multichannel systems where adjacent channel interference must be minimized. |
| Aperture jitter: 4ps RMS | Supports high-frequency signal fidelity up to Nyquist (250kHz) with minimal sampling uncertainty-induced noise. |
| Internal reference buffer wake-up: 200ms | Allows controlled power sequencing-enables synchronized system initialization in battery-powered or energy-harvesting devices. |
Applications
| Programmable Logic Controllers | Industrial Process Control |
|---|---|
|
Use Scenario: High-accuracy analog input modules in modular PLC backplanes acquiring temperature, pressure, and flow sensor outputs across 8 channels. IC Role / Device Role / Timing Role: Primary SAR ADC performing synchronized, low-latency sampling with onboard reference stability across wide ambient temperatures. Use Value: Eliminates external reference and mux ICs, reducing component count by ≥3 while maintaining ±2.75LSB INL over –40°C to 125°C. |
Use Scenario: Distributed I/O nodes in chemical plant DCS systems measuring pH, conductivity, and dissolved oxygen with galvanic isolation. IC Role / Device Role / Timing Role: Precision front-end digitizer with programmable sequencer managing isolated channel banks and auto-ranging inputs. Use Value: 100dB SNR and –107dB crosstalk prevent cross-channel interference in tightly packed cabinets with shared power rails. |
| High-Speed Data Acquisition | Portable or Compact Instrumentation |
|
Use Scenario: Benchtop oscilloscopes and spectrum analyzers requiring 500ksps sustained sampling across multiple analog channels. IC Role / Device Role / Timing Role: Core ADC engine with deterministic 1.5µs conversion time and no pipeline delay for real-time waveform reconstruction. Use Value: Aperture jitter of 4ps RMS and 22MHz input bandwidth preserve signal integrity for FFT-based analysis up to 100kHz. |
Use Scenario: Handheld power quality analyzers and portable vibration monitors powered by Li-ion batteries with strict thermal constraints. IC Role / Device Role / Timing Role: Low-power, high-precision ADC operating in nap mode (1.25mA) during active sampling and sleep mode (300µW) between measurements. Use Value: 27mW typical power at full rate extends battery life while maintaining 18-bit resolution and 100dB SNR in compact enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 18-bit multichannel SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7606C-18 | 16-channel, 200ksps, ±2.5V/±5V input ranges; external reference required; 3.3V-only I/O; 40mW at 200ksps. | Better channel density but lower speed and no integrated reference; requires external ref and level shifters for 5V systems. | Choose AD7606C-18 when >8 channels are needed and speed ≤200ksps suffices; avoid if reference integration or 5V I/O is required. |
| ADS8860 | Single-channel, 1MSPS, 16-bit, SPI interface; no internal reference; 1.8V I/O only; 12mW at 1MSPS. | Higher speed and lower power but lacks multiplexer, sequencer, and reference-requires full external signal chain. | Choose ADS8860 only for single-channel, ultra-low-power, high-speed applications where external mux/ref design is acceptable. |
Compared with AD7606C-18 and ADS8860, the LTC2372HUH-18#PBF uniquely combines 8-channel integration, on-chip 2.048V reference, 500ksps throughput, and 5V-tolerant I/O in a single 5mm × 5mm QFN-reducing total solution size and design complexity for thermally demanding industrial DAQ.
Availability
LTC2372HUH-18#PBF is available at Aetrix Electronics and suitable for programmable logic controllers, industrial process control systems, and high-speed data acquisition requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC2372HUH-18#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, serving industrial, automotive, communications, and healthcare markets.
The LTC2372HUH-18#PBF belongs to Linear's precision SAR ADC product line, engineered for high-accuracy, low-noise, multichannel data acquisition in thermally challenging environments-from factory automation to energy infrastructure.
FAQ
What is the maximum operating temperature of the LTC2372HUH-18#PBF?
The LTC2372HUH-18#PBF is rated for continuous operation from –40°C to +125°C, with all electrical specifications guaranteed across this full range. This H-grade qualification makes it suitable for under-hood automotive sensors, motor drive current sensing, and downhole drilling equipment where ambient temperatures exceed 100°C.
Does the LTC2372HUH-18#PBF require an external reference?
No-the LTC2372HUH-18#PBF integrates a precision 2.048V temperature-compensated reference with 20ppm/°C max drift and a reference buffer capable of driving external circuitry. An external reference may be applied via REFIN (1.25V–2.4V), but it is not required for standard operation of the LTC2372HUH-18#PBF.
How many analog input channels does the LTC2372HUH-18#PBF support?
The LTC2372HUH-18#PBF supports eight analog input channels (CH0–CH7) plus a dedicated differential input pair (ADCIN+/ADCIN–) and a common-mode terminal (COM). The internal low-crosstalk multiplexer allows software-configurable routing of any channel into the ADC core with selectable input ranges.
What digital interface does the LTC2372HUH-18#PBF use?
The LTC2372HUH-18#PBF uses a SPI-compatible serial interface with CNV (conversion start), BUSY (conversion status), SDO (data out), SDI (configuration in), SCK (clock), RDL (output enable), and optional RESET. It supports 1.8V, 2.5V, 3.3V, and 5V logic levels on OVDD, enabling direct connection to diverse host processors without level shifters.
What power-saving modes does the LTC2372HUH-18#PBF offer?
The LTC2372HUH-18#PBF offers two low-power states: nap mode (1.25mA total supply current at 500ksps) automatically engaged between conversions, and sleep mode (300µW) entered via command for extended idle periods. Both modes retain configuration and reference state, enabling fast wake-up without recalibration.
LTC2372HUH-18#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:
- 18
- 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:
- 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-18#PBF FAQ
1.How can I place an order for LTC2372HUH-18#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2372HUH-18#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-18#PBF reliable?
The price and inventory of LTC2372HUH-18#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-18#PBF is usually 5 days.
3.What payment methods are accepted for LTC2372HUH-18#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2372HUH-18#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2372HUH-18#PBF?
LTC2372HUH-18#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2372HUH-18#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-18#PBF?
For technical support, including LTC2372HUH-18#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2372HUH-18#PBF requirements.
6.How does Aetrix verify that LTC2372HUH-18#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2372HUH-18#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-18#PBF meets industry standards.
7.What is the process for return or replacement of LTC2372HUH-18#PBF?
All LTC2372HUH-18#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2372HUH-18#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-18#PBF part is unused and in its original packaging.
Return procedure for LTC2372HUH-18#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC2372HUH-18#PBF Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
