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Analog Devices Inc. LTC2372IUH-16#TRPBF
- Part No.:
- LTC2372IUH-16#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
LTC2372IUH-16#TRPBF.pdf
- Description:
- IC ADC 16BIT SAR 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,431
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Product details
Overview
LTC2372IUH-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 reference and SPI-compatible serial interface. 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 over –40°C to +85°C in a 32-lead 5mm × 5mm QFN package. It is used in high-speed industrial data acquisition systems requiring low crosstalk and guaranteed no missing codes.
For engineers reviewing the LTC2372IUH-16#TRPBF datasheet, LTC2372IUH-16#TRPBF pinout, LTC2372IUH-16#TRPBF application, or LTC2372IUH-16#TRPBF equivalent, key selection criteria include its 500ksps throughput, 8-channel multiplexer with programmable sequencer, onboard reference buffer, sleep mode (300μW), and guaranteed operation up to 85°C - critical for PLCs, ATE, and portable instrumentation.
Technical Context
The LTC2372IUH-16#TRPBF implements a true SAR architecture with no pipeline delay or cycle latency, enabling deterministic conversion timing (1–1.5µs). Its highly configurable 8-channel multiplexer features low crosstalk (<–107dB) and supports three distinct analog input configurations via register programming.
It integrates a temperature-compensated 2.048V reference (20ppm/°C max) and a reference buffer capable of driving external circuitry; the buffer can be overdriven to 5V (REFBUF = 5V) while disabling the internal reference. Digital I/O is SPI-compatible and supports 1.8V–5V logic levels, with a 16-deep programmable sequencer and selectable digital gain compression.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with guaranteed no missing codes - ensures full dynamic range utilization in precision measurement. |
| Throughput Rate | 500ksps - enables real-time sampling of signals up to ~22MHz bandwidth (–3dB input linear BW). |
| INL (Max) | ±1LSB - guarantees monotonicity and accurate end-point linearity across all input ranges. |
| SNR (Typ) | 96dB (fully diff), 93.5dB (pseudo-diff) at fIN = 1kHz - supports >15.6 effective bits in noise-sensitive applications. |
| Power Dissipation | 27mW at 500ksps; 300μW in sleep mode - enables low-power portable and thermally constrained designs. |
| Operating Temp | –40°C to +85°C - qualified for industrial environments without derating. |
| Reference | Onboard 2.048V temp-compensated reference (20ppm/°C max) with buffer - eliminates need for external reference ICs. |
Pinout & Package
Package: 32-lead 5mm × 5mm plastic QFN (UH package); exposed pad (Pin 33) must be soldered to PCB ground plane for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH7 | Analog input channels | Eight single-ended or differential-capable inputs; selected by internal multiplexer under sequencer control. |
| COM | Common-mode reference | Return node for pseudo-differential configurations; sets common-mode voltage for channel pairs. |
| ADCIN+, ADCIN– | Differential analog input | Primary high-precision input pair for fully differential mode; accepts ±4.096V range. |
| MUXOUT+, MUXOUT– | Multiplexer output | Buffered outputs of selected channel pair; used for external signal conditioning or monitoring. |
| REFIN | Reference input | Accepts external 2.048V reference or 1.25V–2.4V overdrive source; disables internal ref when driven. |
| REFBUF | Reference buffer output | Provides 4.096V (typ) buffered reference; can be overdriven to 5V for extended range applications. |
| CNV | Conversion start | Edge-triggered command initiating sample-and-hold and conversion; supports burst and single-shot modes. |
| BUSY | Conversion status | Active-high open-drain signal indicating ongoing conversion; used for timing synchronization. |
| SDO, SDI, SCK, RDL | SPI interface | Standard 4-wire SPI with read-data latch (RDL) for deterministic data capture; supports 100MHz SCK. |
| VDD, OVDD, GND | Power supplies | VDD = 4.75–5.25V analog supply; OVDD = 1.71–5.25V I/O supply; independent grounding improves noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable 16-deep sequencer | Enables automatic round-robin or custom channel scanning without host CPU intervention - reduces firmware overhead in multi-sensor systems. |
| Selectable digital gain compression | Adjusts output code scaling to optimize dynamic range usage for undersized input signals - improves effective resolution in variable-range applications. |
| No pipeline delay / zero cycle latency | Delivers first valid conversion result within one clock cycle after CNV assertion - essential for time-critical closed-loop control. |
| Low crosstalk multiplexer (<–107dB) | Prevents signal coupling between active and inactive channels - preserves accuracy in simultaneous multi-channel measurements. |
| Aperture jitter: 4ps RMS | Minimizes sampling uncertainty - critical for high-frequency signal fidelity and SFDR >110dB performance. |
Applications
| Programmable Logic Controllers | Industrial Process Control |
|---|---|
Use Scenario: Real-time monitoring of 8 analog sensor inputs (e.g., pressure, temperature, flow) in a modular PLC backplane. IC Role / Device Role / Timing Role: Central 16-bit ADC providing synchronized, calibrated digitization of field signals with deterministic 2µs inter-conversion timing. Use Value: ±1LSB INL and 96dB SNR ensure traceable measurement accuracy per IEC 61000-4 standards; 85°C rating supports cabinet-mounted deployment. | Use Scenario: Distributed I/O module acquiring analog process variables (4–20mA loops, RTD bridges) in chemical plant DCS racks. IC Role / Device Role / Timing Role: High-channel-count SAR ADC with programmable sequencer and on-chip reference - replaces discrete reference + mux + ADC stack. Use Value: Integrated 2.048V reference (20ppm/°C) and low crosstalk eliminate calibration drift and channel interference in long-term operation. |
| High-Speed Data Acquisition | Portable Instrumentation |
Use Scenario: Benchtop oscilloscope or spectrum analyzer front-end digitizing up to 8 analog channels at 500ksps. IC Role / Device Role / Timing Role: Precision SAR ADC delivering 16-bit resolution with no missing codes and 22MHz analog bandwidth. Use Value: 4ps aperture jitter and 114dB SFDR enable clean FFT analysis of kHz–MHz signals; SPI interface simplifies FPGA-based controller integration. | Use Scenario: Battery-powered handheld multimeter or power quality analyzer requiring high accuracy and low standby power. IC Role / Device Role / Timing Role: Low-power 16-bit ADC with sleep mode (300μW) and nap mode (6.25mW) - extends battery life during idle periods. Use Value: Onboard reference buffer eliminates external components; 5mm × 5mm QFN enables compact PCB layout in space-constrained enclosures. |
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; integrated PGA and anti-aliasing filter; requires external reference; 4.5V–5.5V VDD. | Higher speed and built-in PGA support direct connection to transducers; lacks onboard reference buffer and lower sleep power (1.2mW). | Choose AD7606C-16 for higher throughput or when PGA gain flexibility is required; LTC2372IUH-16#TRPBF preferred when reference integration and ultra-low sleep power are critical. |
| ADS8688IPWR | 8-channel, 16-bit, 500ksps; integrated reference (4.096V); SPI interface; 2.7V–5.5V supply; no internal sequencer. | Lower supply voltage range and smaller 6mm × 6mm TSSOP package; sequencer must be implemented externally via MCU. | Choose ADS8688IPWR for dual-supply or low-voltage systems; LTC2372IUH-16#TRPBF offers superior temperature stability (20ppm/°C vs. 35ppm/°C) and integrated sequencer for reduced firmware load. |
Compared with AD7606C-16 and ADS8688IPWR, the LTC2372IUH-16#TRPBF uniquely combines an onboard 2.048V reference buffer, 16-deep hardware sequencer, and 300μW sleep mode - making it optimal for industrial DAQ where calibration integrity, autonomous channel management, and energy efficiency are jointly prioritized.
Availability
LTC2372IUH-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 LTC2372IUH-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 LTC2372IUH-16#TRPBF belongs to ADI's precision SAR ADC product line, designed specifically for industrial-grade data acquisition where accuracy, reliability, and integration density are critical - including applications demanding guaranteed no missing codes, low INL, and robust operation from –40°C to +85°C.
FAQ
What is the operating temperature range of the LTC2372IUH-16#TRPBF?
The LTC2372IUH-16#TRPBF is rated for operation from –40°C to +85°C, meeting industrial temperature requirements. This grade ('I') is confirmed in the order information table and validated across all key specifications including INL, SNR, and timing parameters - ensuring full performance compliance without derating in harsh environments.
Does the LTC2372IUH-16#TRPBF include an internal voltage reference?
Yes, the LTC2372IUH-16#TRPBF integrates a precision 2.048V temperature-compensated reference with a maximum drift of 20ppm/°C. It also includes a reference buffer (REFBUF) that can be overdriven to 5V and used to drive external circuitry - eliminating the need for external reference ICs in most applications.
How many analog input channels does the LTC2372IUH-16#TRPBF support?
The LTC2372IUH-16#TRPBF supports eight analog input channels (CH0–CH7) with a highly configurable multiplexer. It enables fully differential, pseudo-differential unipolar, and pseudo-differential bipolar input configurations - all selectable per channel via internal configuration registers.
What is the maximum sampling rate of the LTC2372IUH-16#TRPBF?
The LTC2372IUH-16#TRPBF achieves a maximum sampling rate of 500ksps, with a typical conversion time of 1–1.5µs and a minimum inter-conversion period of 2µs. This throughput is maintained across all supported input ranges and temperature conditions.
Is the LTC2372IUH-16#TRPBF pin-compatible with other devices in the LTC2372 family?
Yes, all variants of the LTC2372-16 (including LTC2372CUH-16, LTC2372IUH-16, and LTC2372HUH-16) share identical 32-lead 5mm × 5mm QFN (UH) packaging and pinout - differing only in temperature grade and part marking. This allows drop-in replacement across C, I, and H grades without PCB redesign.
LTC2372IUH-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 ~ 85°C
- Supplier Device Package:
- 32-QFN (5x5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2372IUH-16#TRPBF FAQ
1.How can I place an order for LTC2372IUH-16#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2372IUH-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 LTC2372IUH-16#TRPBF reliable?
The price and inventory of LTC2372IUH-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 LTC2372IUH-16#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2372IUH-16#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2372IUH-16#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2372IUH-16#TRPBF?
LTC2372IUH-16#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2372IUH-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 LTC2372IUH-16#TRPBF?
For technical support, including LTC2372IUH-16#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2372IUH-16#TRPBF requirements.
6.How does Aetrix verify that LTC2372IUH-16#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2372IUH-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 LTC2372IUH-16#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2372IUH-16#TRPBF?
All LTC2372IUH-16#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2372IUH-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 LTC2372IUH-16#TRPBF part is unused and in its original packaging.
Return procedure for LTC2372IUH-16#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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