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Analog Devices Inc. LTC2372HUH-16#TRPBF
- Part No.:
- LTC2372HUH-16#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
LTC2372HUH-16#TRPBF.pdf
- Description:
- IC ADC 16BIT SAR 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,731
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Product details
Overview
LTC2372HUH-16#TRPBF 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 for high-reliability industrial data acquisition.
For engineers reviewing the LTC2372HUH-16#TRPBF datasheet, LTC2372HUH-16#TRPBF pinout, LTC2372HUH-16#TRPBF application, or LTC2372HUH-16#TRPBF equivalent, this device is selected for precision multichannel sampling in harsh-temperature environments where low crosstalk, no missing codes at 16 bits, SPI-compatible serial interface with 1.8V–5V I/O, and onboard reference buffer are critical design requirements.
Technical Context
The LTC2372HUH-16#TRPBF implements a true SAR architecture with no pipeline delay or cycle latency, enabling deterministic conversion timing and real-time control loop compatibility. Its highly configurable 8-channel multiplexer features low crosstalk (<–107dB) and supports per-channel input range selection via SPI configuration words.
Internal timing is governed by an on-chip oscillator, eliminating external clock dependencies for conversion start; CNV pulse initiates sampling, BUSY indicates conversion status, and SDO outputs 16-bit results MSB-first with programmable data alignment. The reference subsystem includes a 2.048V bandgap reference (20ppm/°C max drift) and a buffered 4.096V output (REFBUF) capable of driving external circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with guaranteed no missing codes - ensures full dynamic range utilization without code gaps in closed-loop or metrology systems. |
| Throughput Rate | 500ksps maximum - supports real-time capture of signals up to ~22MHz bandwidth (–3dB input linear bandwidth). |
| INL (Max) | ±1LSB over full temperature range - enables high-accuracy DC measurements and calibration-critical applications without software correction. |
| SNR (Typ) | 96dB (fully differential), 93.5dB (pseudo-differential) at fIN = 1kHz - delivers >15.6 effective number of bits (ENOB) for precision sensor interfacing. |
| Operating Temp | –40°C to +125°C - qualified for under-hood automotive, downhole oil & gas, and industrial process control deployments. |
| Power Dissipation | 27mW at 500ksps; 300µW in sleep mode - enables low-power portable instrumentation and thermally constrained PCB layouts. |
| Reference | Onboard 2.048V temp-compensated reference (±5mV initial accuracy) and 4.096V REFBUF output - eliminates need for external reference ICs and reduces BOM count. |
Pinout & Package
32-lead 5mm × 5mm QFN package (UH) with exposed thermal pad (Pin 33, GND). RoHS-compliant, lead-free finish. Pin 1 marked by dot; top-side marking "237216".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH7 | Analog Input Channels | Eight single-ended inputs configurable as fully differential pairs (e.g., CH0+/CH0–) or pseudo-differential with COM; support selectable input ranges. |
| COM | Common Input Reference | Return node for pseudo-differential unipolar/bipolar modes; tied to internal reference midpoint or external ground depending on configuration. |
| ADCIN+, ADCIN– | Dedicated Differential Inputs | High-impedance, low-crosstalk path bypassing multiplexer for highest-precision single-channel measurement. |
| MUXOUT+, MUXOUT– | Multiplexer Output Terminals | Access to post-mux analog signal before ADC core - enables external signal conditioning or monitoring. |
| REFIN | Reference Input | Accepts external 2.048V reference (1.25V–2.4V range); disables internal reference when driven. |
| REFBUF | Reference Buffer Output | Provides 4.096V buffered reference (±8mV tolerance); can be overdriven to 5V for extended range operation. |
| CNV | Convert Start Input | Edge-triggered command initiating sample-and-hold and conversion; minimum pulse width 20ns. |
| BUSY | Conversion Status Output | Active-high open-drain signal indicating ongoing conversion; used for timing synchronization in daisy-chain or interrupt-driven systems. |
| SDO, SDI, SCK, RDL | SPI Interface Signals | Full-duplex SPI with 1.8V–5V logic compatibility; RDL enables 3-wire bus sharing; supports up to 100MHz SCK. |
| VDD, OVDD, GND | Power Supplies | VDD = 4.75–5.25V analog supply; OVDD = 1.71–5.25V I/O supply; multiple GND pins ensure low-noise grounding and thermal dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Sequencer (16-deep) | Enables automatic channel scanning without host CPU intervention - reduces firmware overhead in PLC and DAQ systems. |
| Selectable Digital Gain Compression | Adjusts output code scaling to optimize dynamic range usage for small-signal inputs - improves effective resolution in sensor front-ends. |
| No Pipeline Delay / Zero Latency | Delivers first valid result within one conversion cycle (2µs max) - essential for real-time feedback control and event-triggered capture. |
| Low Crosstalk Multiplexer (<–107dB) | Prevents signal bleed between active and inactive channels - maintains integrity in simultaneous multi-sensor monitoring. |
| Single 5V Supply + Flexible I/O | Eliminates dual-supply design complexity while supporting mixed-voltage microcontrollers (1.8V/2.5V/3.3V/5V) on same board. |
| Auto Nap Mode Between Conversions | Reduces average power proportionally to sampling rate - extends battery life in portable test equipment without sacrificing throughput. |
Applications
| Programmable Logic Controllers | Industrial Process Control |
|---|---|
Use Scenario: Monitoring analog sensor outputs (pressure, temperature, flow) across 8 field transmitters in a distributed I/O module. IC Role / Device Role: Central 16-bit multichannel ADC acquiring synchronized samples with <–107dB channel isolation and ±1LSB linearity. Use Value: Enables single-chip replacement of legacy 12-bit ADCs with external muxes, reducing component count and improving system-level accuracy over –40°C to 125°C. |
Use Scenario: Closed-loop control of chemical reactor parameters using feedback from multiple RTD and strain gauge bridges. IC Role / Device Role: High-stability ADC with onboard 2.048V reference and 96dB SNR to resolve microvolt-level bridge imbalances. Use Value: Eliminates external reference drift compensation and provides deterministic 2µs conversion latency for PID execution timing. |
| High-Speed Data Acquisition | Portable Instrumentation |
Use Scenario: 500ksps waveform capture in handheld oscilloscopes or power quality analyzers with 8 voltage/current inputs. IC Role / Device Role: Low-latency SAR ADC with fully differential input support and 22MHz analog bandwidth for transient detection. Use Value: Delivers >15.6 ENOB at full speed without averaging, enabling FFT-based harmonic analysis compliant with IEC 61000-4-30 Class A. |
Use Scenario: Battery-powered environmental monitor logging temperature, humidity, and gas concentration from calibrated sensors. IC Role / Device Role: Ultra-low-power ADC operating at 10ksps in nap mode (6.25mW) and 300µW in sleep mode between readings. Use Value: Extends 2xAA battery life to >12 months while maintaining 16-bit resolution and factory-traceable linearity performance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit multichannel SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7606C-16 | 8-channel, 16-bit, 1MSPS; uses external reference; ±10V/±5V input ranges; parallel + SPI interface; 40-lead LQFP. | Higher throughput but requires external reference and more complex layout; better suited for high-speed automated test equipment. | Select when >500ksps is required and board space allows larger package and external reference components. |
| ADS8688IPWR | 8-channel, 16-bit, 500ksps; integrated 4.096V reference; SPI-only; 38-lead TSSOP; lower SNR (92dB typical). | Lower temperature grade (–40°C to 105°C); no fully differential mode; higher DNL (±1.5LSB); smaller package but less robust EMI immunity. | Select for cost-sensitive industrial controls where extended temperature range and 96dB SNR are not mandatory. |
Compared with AD7606C-16 and ADS8688IPWR, the LTC2372HUH-16#TRPBF uniquely combines guaranteed ±1LSB INL over –40°C to 125°C, 96dB SNR in fully differential mode, and integrated reference buffer - making it optimal for high-accuracy, high-reliability embedded systems where thermal stability and signal integrity are non-negotiable.
Availability
LTC2372HUH-16#TRPBF 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-16#TRPBF 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 LTC2372HUH-16#TRPBF belongs to ADI's precision SAR ADC product line, engineered for demanding applications requiring high resolution, low noise, wide temperature operation, and integrated reference functionality - particularly in space-constrained, thermally aggressive environments.
FAQ
What is the maximum operating temperature range for the LTC2372HUH-16#TRPBF?
The LTC2372HUH-16#TRPBF 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#TRPBF suitable for under-hood automotive, downhole drilling tools, and industrial motor drives where ambient temperatures exceed 100°C.
Does the LTC2372HUH-16#TRPBF require an external reference?
No, the LTC2372HUH-16#TRPBF integrates a precision 2.048V temperature-compensated reference (20ppm/°C max drift) and a buffered 4.096V output (REFBUF) that can drive external circuitry. An external reference may be applied to REFIN only if higher initial accuracy or custom voltage is needed; doing so disables the internal reference.
How does the programmable sequencer in the LTC2372HUH-16#TRPBF function?
The LTC2372HUH-16#TRPBF includes a 16-deep hardware sequencer that stores channel selection, input range, and gain settings. Once programmed via SPI, it automatically cycles through configured channels without host intervention-reducing MCU load and enabling deterministic sampling intervals critical for synchronized multi-sensor systems.
What are the supported analog input configurations for the LTC2372HUH-16#TRPBF?
The LTC2372HUH-16#TRPBF supports three input modes: fully differential (±4.096V), pseudo-differential unipolar (0V to 4.096V), and pseudo-differential bipolar (±2.048V). Each channel pair (e.g., CH0+/CH0–) or single-ended channel (CH0–CH7 with COM) can be independently configured via SPI register writes.
Can the LTC2372HUH-16#TRPBF operate with a 1.8V I/O supply?
Yes, the LTC2372HUH-16#TRPBF supports OVDD from 1.71V to 5.25V, enabling direct interface with 1.8V microcontrollers and FPGAs. All digital pins (SDO, SDI, SCK, RDL, BUSY, CNV, RESET) are level-compatible across this range, with VIH = 0.8×OVDD and VIL = 0.2×OVDD thresholds guaranteed over temperature.
LTC2372HUH-16#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 32-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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#TRPBF FAQ
1.How can I place an order for LTC2372HUH-16#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2372HUH-16#TRPBF 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#TRPBF reliable?
The price and inventory of LTC2372HUH-16#TRPBF 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#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2372HUH-16#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2372HUH-16#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2372HUH-16#TRPBF?
LTC2372HUH-16#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2372HUH-16#TRPBF 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#TRPBF?
For technical support, including LTC2372HUH-16#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2372HUH-16#TRPBF requirements.
6.How does Aetrix verify that LTC2372HUH-16#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2372HUH-16#TRPBF 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#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2372HUH-16#TRPBF?
All LTC2372HUH-16#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2372HUH-16#TRPBF, 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#TRPBF part is unused and in its original packaging.
Return procedure for LTC2372HUH-16#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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