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Analog Devices Inc. LTC2373CUH-16#TRPBF
- Part No.:
- LTC2373CUH-16#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
LTC2373CUH-16#TRPBF.pdf
- Description:
- IC ADC 16BIT SAR 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,540
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Product details
Overview
LTC2373CUH-16#TRPBF from Analog Devices is a 16-bit, 1 Msps, 8-channel successive approximation register (SAR) analog-to-digital converter with ±1 LSB INL (max), 96 dB SNR (fully differential), and integrated 2.048 V temperature-compensated reference. It operates from a single 5 V supply, supports fully differential (±4.096 V), pseudo-differential unipolar (0–4.096 V), and bipolar (±2.048 V) input ranges, and targets high-precision industrial data acquisition systems.
For engineers reviewing the LTC2373CUH-16#TRPBF datasheet, LTC2373CUH-16#TRPBF pinout, LTC2373CUH-16#TRPBF application, or LTC2373CUH-16#TRPBF equivalent, key selection criteria include guaranteed 16-bit no-missing-codes performance, programmable sequencer depth of 16, SPI-compatible serial interface with 1.8–5 V I/O compatibility, and operation across 0°C to 70°C ambient.
Technical Context
The LTC2373CUH-16#TRPBF implements a low-crosstalk 8-channel multiplexer with per-channel input range selection and internal reference buffer capable of driving external circuitry. Its conversion timing is governed by an internal oscillator, eliminating external clock dependency and ensuring consistent 460 ns conversion time and 1 µs minimum cycle time.
It features automatic nap mode between conversions-reducing power to 120 µA at 1 Msps-and deep sleep mode drawing only 300 µA, enabling scalable power management in battery-sensitive or thermally constrained applications. The device guarantees operation up to 125°C junction temperature and includes robust digital I/O with 0.2·OVDD/0.8·OVDD logic thresholds.
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 precision measurement. |
| Sampling Rate | 1 Msps maximum-supports real-time capture of signals up to ~22 MHz bandwidth (–3 dB input linear bandwidth). |
| INL | ±1 LSB max over full temperature range-enables accurate absolute voltage measurement without calibration for many industrial sensor interfaces. |
| SNR | 96 dB typical (fully differential, fIN = 1 kHz)-delivers >15.6 effective number of bits (ENOB) in high-fidelity acquisition. |
| Power Dissipation | 40 mW at 1 Msps-balances speed and thermal footprint in dense PCB layouts or sealed enclosures. |
| Reference | Onboard 2.048 V ±0.25% (20 ppm/°C max) buffered reference-eliminates need for external precision reference and reduces BOM count. |
| Package | 32-lead 5 mm × 5 mm QFN (UH)-supports compact, thermally efficient layout with exposed ground pad soldered to PCB. |
Pinout & Package
32-lead 5 mm × 5 mm plastic QFN (UH package) with exposed thermal pad (Pin 33, GND). Pin 1 marked via top-side laser etch; pin numbering follows standard counter-clockwise convention from top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH7 | Analog input channels | Eight single-ended or differential-capable inputs configurable via internal MUX; support fully differential, pseudo-differential unipolar, and bipolar ranges. |
| COM | Common-mode reference | Provides return path for pseudo-differential configurations; tied to mid-scale for bipolar/unipolar modes or used as differential complement. |
| ADCIN+, ADCIN– | Dedicated differential input pair | High-accuracy direct-input path bypassing MUX; enables simultaneous sampling of critical signal pairs with minimal crosstalk. |
| MUXOUT+, MUXOUT– | Multiplexer output pair | Provides buffered analog output of selected channel for external signal conditioning or monitoring before ADC core. |
| CNV | Conversion start trigger | Edge-triggered input initiating sample-and-hold and conversion sequence; supports precise timing control independent of SPI interface. |
| BUSY | Conversion status indicator | Active-high open-drain output signaling ongoing conversion; allows asynchronous polling or interrupt-driven firmware design. |
| SDO, SDI, SCK, RDL | SPI serial interface | Full-duplex SPI with read-data latch (RDL) enabling deterministic timing for multi-device daisy-chaining or synchronized sampling. |
| VDD, OVDD, GND | Power supplies | VDD = 4.75–5.25 V analog supply; OVDD = 1.71–5.25 V I/O supply-permits interfacing with 1.8 V, 2.5 V, 3.3 V, or 5 V controllers without level shifters. |
| REFBUF, REFIN | Reference control | REFBUF outputs 4.096 V when enabled; REFIN accepts 1.25–2.4 V external reference or disables internal buffer when grounded. |
| RESET | Hardware reset | Asynchronous active-low input resetting internal state machine, sequencer, and configuration registers to power-on defaults. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable 16-deep sequencer | Enables autonomous, repeatable channel scanning order without host CPU intervention-ideal for PLC scan cycles or ATE test sequences. |
| Selectable digital gain compression | Allows scaling of full-scale range in firmware to optimize dynamic range usage for sub-full-scale sensor outputs. |
| No pipeline delay or cycle latency | Delivers first valid conversion result within one cycle (1 µs), supporting closed-loop control with minimal phase lag. |
| Channel-to-channel crosstalk ≤ –107 dB | Ensures accurate simultaneous measurement of high-amplitude and low-amplitude signals on adjacent channels-critical for multi-sensor monitoring. |
| Aperture jitter ≤ 4 ps RMS | Minimizes sampling uncertainty in high-frequency signal analysis, preserving SFDR > 110 dB in FFT-based diagnostics. |
Applications
| Programmable Logic Controllers | Industrial Process Control |
|---|---|
Use Scenario: High-density analog input modules in modular PLC backplanes acquiring temperature, pressure, and flow sensor signals across 8 channels. IC Role / Device Role / Timing Role: Primary SAR ADC performing synchronized, calibrated voltage digitization with integrated reference and sequencer-managed channel cycling. Use Value: Eliminates external reference and level-shifting components while maintaining ±1 LSB linearity across 0°C–70°C operating range-reducing module BOM cost and calibration overhead. | Use Scenario: Distributed I/O nodes in chemical plant DCS systems measuring pH, conductivity, and dissolved oxygen with millivolt-level resolution. IC Role / Device Role / Timing Role: Precision front-end ADC converting conditioned sensor outputs into 16-bit digital values for real-time PID loop execution. Use Value: 96 dB SNR and <4 ps aperture jitter preserve signal integrity for detecting subtle process anomalies in noisy 4–20 mA loop environments. |
| High-Speed Data Acquisition | Portable Instrumentation |
Use Scenario: Benchtop oscilloscopes and spectrum analyzers requiring 1 Msps sampling with multi-channel correlation capability. IC Role / Device Role / Timing Role: Core acquisition engine providing deterministic timing, low-latency SPI readout, and hardware sequencer for interleaved channel capture. Use Value: No pipeline delay ensures immediate availability of first sample; BUSY signal enables tight synchronization with FPGA-based waveform reconstruction logic. | Use Scenario: Handheld multimeters and portable power quality analyzers needing low-power, high-accuracy digitization in battery-operated form factors. IC Role / Device Role / Timing Role: Low-power ADC operating in nap mode between measurements and entering 300 µW sleep during standby. Use Value: 40 mW active power and automatic nap/sleep transitions extend battery life without sacrificing 16-bit resolution or 1 Msps burst capability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed, multi-channel SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7606C-16 | 8-channel, 16-bit, 1 Msps, but uses external reference and requires ±5 V analog supply; no integrated reference buffer. | Requires external precision reference and dual-supply design; better suited for legacy systems already using ±5 V rails. | Choose AD7606C-16 if existing system uses external references or requires simultaneous sampling across all 8 channels with identical aperture timing. |
| ADS8688IPWR | 8-channel, 16-bit, 100 ksps max; integrated reference (4.096 V), single 5 V supply, but lower speed and no programmable sequencer. | Targeted at lower-throughput applications like motor control feedback or HVAC monitoring where 100 ksps suffices. | Choose ADS8688IPWR for cost-sensitive, lower-speed designs where sequencer autonomy and 1 Msps throughput are not required. |
Compared with AD7606C-16 and ADS8688IPWR, the LTC2373CUH-16#TRPBF uniquely combines integrated 2.048 V reference + buffer, 1 Msps throughput, and 16-deep programmable sequencer in a single 5 V supply, 32-pin QFN-making it optimal for space-constrained, self-contained data loggers and next-generation modular I/O.
Availability
LTC2373CUH-16#TRPBF is available at Aetrix Electronics and suitable for programmable logic controllers, industrial process control systems, and high-speed data acquisition equipment requiring stable component supply, long-term lifecycle support, and guaranteed 0°C to 70°C commercial-grade performance.
Supply support for LTC2373CUH-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 is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC2373-16 product line delivers high-speed, high-accuracy SAR ADCs with integrated references and intelligent on-chip peripherals-designed specifically for demanding industrial data acquisition where precision, reliability, and integration reduce system complexity.
FAQ
What is the guaranteed operating temperature range for the LTC2373CUH-16#TRPBF?
The LTC2373CUH-16#TRPBF is specified for 0°C to 70°C ambient operation (Commercial grade, denoted by the 'C' suffix). Its internal circuitry is characterized to maintain ±1 LSB INL, 96 dB SNR, and full functionality across this range, with junction temperature rated up to 125°C. This makes the LTC2373CUH-16#TRPBF suitable for indoor industrial control cabinets and laboratory instrumentation where ambient extremes are controlled.
Does the LTC2373CUH-16#TRPBF require an external reference voltage?
No-the LTC2373CUH-16#TRPBF integrates a precision 2.048 V temperature-compensated reference with 20 ppm/°C max drift and a dedicated reference buffer (REFBUF) that outputs 4.096 V. An external reference may be applied via REFIN (1.25–2.4 V range) to override the internal reference, but it is not required. The LTC2373CUH-16#TRPBF achieves full 16-bit performance using its internal reference alone.
How does the programmable sequencer in the LTC2373CUH-16#TRPBF function?
The LTC2373CUH-16#TRPBF includes a 16-entry hardware sequencer that autonomously cycles through user-defined channel selections and input range configurations (fully diff/pseudo-diff unipolar/bipolar) without host processor involvement. Each entry specifies CHx, COM connection, and gain mode. Once programmed via SPI, the sequencer executes continuously-ideal for repetitive scan patterns in PLCs or ATE. The LTC2373CUH-16#TRPBF supports both continuous and single-shot sequencing modes.
What power-saving modes does the LTC2373CUH-16#TRPBF support?
The LTC2373CUH-16#TRPBF offers two low-power states: Nap Mode (120 µA total supply current at 1 Msps) automatically engages between conversions, and Sleep Mode (300 µA) entered via command for extended idle periods. Both modes retain register settings and reference bias. Wake-up from Sleep Mode requires RESET or CNV pulse and includes 200 ms REFBUF stabilization time. These modes make the LTC2373CUH-16#TRPBF viable for portable or energy-conscious industrial sensors.
Is the LTC2373CUH-16#TRPBF pin-compatible with other devices in the LTC2373 family?
Yes-the LTC2373CUH-16#TRPBF shares identical 32-lead 5 mm × 5 mm QFN (UH) packaging and pinout with all variants in the LTC2373-16 family, including LTC2373IUH-16#TRPBF (–40°C to 85°C) and LTC2373HUH-16#TRPBF (–40°C to 125°C). Functionally identical except for temperature grade and part marking, they enable drop-in replacement during design-in or qualification-allowing seamless upgrade to industrial or high-reliability grades without PCB redesign.
LTC2373CUH-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):
- 1M
- 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:
- 0°C ~ 70°C
- Supplier Device Package:
- 32-QFN (5x5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2373CUH-16#TRPBF FAQ
1.How can I place an order for LTC2373CUH-16#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2373CUH-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 LTC2373CUH-16#TRPBF reliable?
The price and inventory of LTC2373CUH-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 LTC2373CUH-16#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2373CUH-16#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2373CUH-16#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2373CUH-16#TRPBF?
LTC2373CUH-16#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2373CUH-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 LTC2373CUH-16#TRPBF?
For technical support, including LTC2373CUH-16#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2373CUH-16#TRPBF requirements.
6.How does Aetrix verify that LTC2373CUH-16#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2373CUH-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 LTC2373CUH-16#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2373CUH-16#TRPBF?
All LTC2373CUH-16#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2373CUH-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 LTC2373CUH-16#TRPBF part is unused and in its original packaging.
Return procedure for LTC2373CUH-16#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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