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Analog Devices Inc. LTC2373IUH-16#TRPBF
- Part No.:
- LTC2373IUH-16#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
LTC2373IUH-16#TRPBF.pdf
- Description:
- IC ADC 16BIT SAR 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,214
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Product details
Overview
LTC2373IUH-16#TRPBF from Analog Devices is a 16-bit, 1 Msps, 8-channel successive approximation register (SAR) analog-to-digital converter with fully differential ±4.096 V input range, ±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 SPI-compatible serial interface up to 100 MHz, and delivers high-precision data acquisition in industrial process control and high-speed instrumentation.
For engineers reviewing the LTC2373IUH-16#TRPBF datasheet, LTC2373IUH-16#TRPBF pinout, LTC2373IUH-16#TRPBF application, or LTC2373IUH-16#TRPBF equivalent, key selection criteria include guaranteed operation from –40°C to +85°C, no missing codes at 16 bits, programmable sequencer depth of 16, low 40 mW typical power dissipation at full throughput, and support for pseudo-differential unipolar/bipolar ranges.
Technical Context
The LTC2373IUH-16#TRPBF implements a true SAR architecture with no pipeline delay or cycle latency, enabling deterministic conversion timing critical for closed-loop control. Its highly configurable 8-channel multiplexer provides low crosstalk (<–107 dB) and supports three selectable input modes-fully differential, pseudo-differential unipolar (0 V to 4.096 V), and pseudo-differential bipolar (±2.048 V)-with independent common-mode voltage handling.
Internal timing is governed by an onboard oscillator, eliminating external clock dependency for conversion start; CNV pulse initiates sampling, and BUSY indicates completion. The device features a single-shot-capable reference buffer, digital gain compression, and automatic nap mode between conversions to scale power with sample rate-dissipating only 300 µW in sleep mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes-guarantees monotonicity and full code coverage for precision measurement systems. |
| Sampling Rate | 1 Msps maximum-enables real-time capture of signals up to ~22 MHz bandwidth (–3 dB input linear bandwidth). |
| INL Error | ±1 LSB max over full temperature range-ensures accurate end-point linearity without calibration in factory test or field deployment. |
| SNR | 96 dB typical (fully differential, fIN = 1 kHz)-supports >15.6 effective number of bits (ENOB) in high-fidelity signal chain applications. |
| Reference | Onboard 2.048 V ±0.25% initial accuracy, 4–20 ppm/°C tempco-reduces BOM count and eliminates external reference design complexity. |
| Power Dissipation | 40 mW typical at 1 Msps; 300 µW in sleep mode-enables thermally constrained designs and battery-backed monitoring systems. |
| Operating Temp | –40°C to +85°C-qualified for industrial environments including PLCs, motor drives, and automated test equipment. |
Pinout & Package
32-lead 5 mm × 5 mm plastic QFN package (UH) with exposed pad soldered to PCB ground. Pin 33 (exposed pad) is GND and must be electrically connected for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH7 | Analog input channels | Eight single-ended inputs configurable as fully differential pairs (e.g., CH0+/CH1–); support multiplexed scanning via internal sequencer. |
| COM | Common-mode reference | Provides return path for pseudo-differential inputs; sets common-mode voltage for bipolar/unipolar ranges. |
| ADCIN+, ADCIN– | Dedicated differential input pair | Direct high-accuracy path bypassing multiplexer-used for critical channels requiring lowest crosstalk and distortion. |
| MUXOUT+, MUXOUT– | Multiplexer output terminals | Provide buffered access to selected channel pair; enable external signal conditioning or verification before ADC core. |
| CNV | Conversion start trigger | Edge-sensitive input; rising edge initiates sampling and conversion-no external clock required for basic operation. |
| BUSY | Conversion status indicator | Active-high open-drain output signals ongoing conversion; used for hardware handshaking or interrupt-driven firmware. |
| SDO, SDI, SCK, RDL | SPI-compatible serial interface | Supports 1.8 V–5 V I/O logic; RDL enables 3-wire mode; SDO valid after BUSY↓ or configurable SCK edges per timing spec. |
| REFBUF, REFIN | Reference buffer and input | REFBUF outputs 4.096 V when enabled; REFIN accepts 2.048 V external reference or disables internal buffer when grounded. |
| VDD, OVDD, GND | Power supplies | VDD = 4.75–5.25 V analog supply; OVDD = 1.71–5.25 V digital I/O supply-enables mixed-voltage system interfacing. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable 16-deep sequencer | Enables autonomous multi-channel scan without host CPU intervention-reduces firmware overhead in data loggers and DAQ systems. |
| Select digital gain compression | Prevents overflow during transient overvoltage events by scaling digital output-improves robustness in noisy industrial environments. |
| No pipeline delay / zero cycle latency | Delivers first valid conversion result within one sample period-essential for time-critical feedback loops in servo control. |
| Channel-to-channel crosstalk <–107 dB | Minimizes interference between simultaneously sampled adjacent channels-critical for high-density sensor arrays and spectral analysis. |
| Aperture jitter 4 psRMS | Enables high dynamic range at high input frequencies-supports clean 16-bit resolution up to Nyquist (500 kHz) with minimal noise floor degradation. |
Applications
| Programmable Logic Controllers | Industrial Process Control |
|---|---|
|
Use Scenario: High-accuracy analog input module acquiring temperature, pressure, and flow sensor signals in distributed I/O racks. IC Role / Device Role / Timing Role: Primary 16-bit ADC front-end with integrated reference and sequencer-handles 8 sensor channels autonomously per conversion cycle. Use Value: Eliminates external reference and multiplexer ICs, reducing component count and board area while maintaining ±1 LSB linearity across –40°C to +85°C. |
Use Scenario: Centralized control unit monitoring reactor vessel parameters in chemical processing plants with strict EMC and thermal requirements. IC Role / Device Role / Timing Role: Precision SAR ADC with low aperture jitter and high PSRR-rejects 50/60 Hz noise and maintains 96 dB SNR under variable load conditions. Use Value: Delivers stable ENOB >15.6 over full industrial temperature range without recalibration, ensuring regulatory compliance for safety-critical measurements. |
| High-Speed Data Acquisition | Portable Instrumentation |
|
Use Scenario: Benchtop oscilloscope or spectrum analyzer capturing transient waveforms at 1 Msps with post-processing FFT capability. IC Role / Device Role / Timing Role: Low-latency, deterministic-conversion ADC feeding FPGA or DSP-no pipeline delay ensures precise timestamp alignment. Use Value: 22 MHz –3 dB input bandwidth and 4 psRMS aperture jitter preserve signal integrity for accurate frequency-domain analysis up to 10 MHz. |
Use Scenario: Handheld multimeter or portable power quality analyzer requiring battery life >8 hours and measurement repeatability across ambient conditions. IC Role / Device Role / Timing Role: Ultra-low-power ADC with nap/sleep modes-draws only 300 µW in standby and scales current linearly with sample rate. Use Value: Reduces average system power by >70% versus fixed-rate ADCs, extending runtime without compromising 16-bit resolution or THD <–110 dB. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-precision SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7606C-16 | 8-channel, 16-bit, 1 Msps, but uses parallel interface and requires external reference; ±0.5 LSB INL (typ), 93.8 dB SNR. | Targets systems with legacy parallel bus architecture or where FPGA I/O pin count permits wide data bus. | Choose AD7606C-16 if existing design uses parallel readout or requires lower INL drift over temperature. |
| ADS8688IPWR | 8-channel, 16-bit, 100 ksps max; integrated PGA and reference; SPI interface; ±1.5 LSB INL (max); 91 dB SNR. | Optimized for cost-sensitive, lower-throughput applications needing programmable gain and simplified analog front-end. | Choose ADS8688IPWR when input signal amplitude varies widely and on-chip PGA eliminates external amplification stages. |
Compared with AD7606C-16 and ADS8688IPWR, the LTC2373IUH-16#TRPBF uniquely combines SPI interface, integrated reference buffer, sub-1 LSB INL over temperature, and 1 Msps throughput in a compact QFN-making it optimal for space-constrained, high-fidelity industrial DAQ where deterministic timing and minimal external components are critical.
Availability
LTC2373IUH-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, long-term lifecycle support, and guaranteed –40°C to +85°C operation.
Supply support for LTC2373IUH-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. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC2373IUH-16#TRPBF belongs to the Linear Technology SAR ADC product line-designed specifically for high-accuracy, low-noise, multi-channel data acquisition in harsh industrial environments where reliability, temperature stability, and integration density are paramount.
FAQ
What is the operating temperature range of the LTC2373IUH-16#TRPBF?
The LTC2373IUH-16#TRPBF is rated for operation from –40°C to +85°C, meeting industrial-grade environmental requirements. This range is validated across all key specifications including INL (±1 LSB max), SNR (96 dB typical), and reference stability (4–20 ppm/°C), ensuring consistent performance in factory automation and outdoor equipment deployments.
Does the LTC2373IUH-16#TRPBF require an external reference?
No-the LTC2373IUH-16#TRPBF integrates a precision 2.048 V temperature-compensated reference with 4–20 ppm/°C drift and a dedicated reference buffer (REFBUF) that outputs 4.096 V. An external reference may be applied via REFIN pin only if higher initial accuracy or custom voltage is needed; otherwise, the internal reference eliminates BOM cost and layout complexity.
How does the programmable sequencer in the LTC2373IUH-16#TRPBF function?
The LTC2373IUH-16#TRPBF includes a 16-deep hardware sequencer that autonomously cycles through up to 16 user-defined channel configurations-including input range, gain, and averaging-without host processor intervention. Each entry specifies CHx/CHy pairing, differential mode, and reference source, enabling flexible multi-sensor polling in data loggers and PLC modules.
What power-saving modes does the LTC2373IUH-16#TRPBF support?
The LTC2373IUH-16#TRPBF offers two low-power states: nap mode (1.25 mA typical, active between conversions) and sleep mode (300 µW). Nap mode reduces current proportionally with sample rate; sleep mode disables the reference buffer, ADC core, and digital interface. Both are entered via SPI command and exited synchronously on CNV assertion.
Is the LTC2373IUH-16#TRPBF pin-compatible with other devices in the LTC2373 family?
Yes-the LTC2373IUH-16#TRPBF shares identical 32-lead 5 mm × 5 mm QFN (UH) packaging and pinout with LTC2373CUH-16#TRPBF and LTC2373HUH-16#TRPBF. Only the temperature grade differs (I-grade: –40°C to +85°C), allowing drop-in replacement in existing layouts when upgrading or derating for extended thermal environments.
LTC2373IUH-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:
- -40°C ~ 85°C
- Supplier Device Package:
- 32-QFN (5x5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2373IUH-16#TRPBF FAQ
1.How can I place an order for LTC2373IUH-16#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2373IUH-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 LTC2373IUH-16#TRPBF reliable?
The price and inventory of LTC2373IUH-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 LTC2373IUH-16#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2373IUH-16#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2373IUH-16#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2373IUH-16#TRPBF?
LTC2373IUH-16#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2373IUH-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 LTC2373IUH-16#TRPBF?
For technical support, including LTC2373IUH-16#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2373IUH-16#TRPBF requirements.
6.How does Aetrix verify that LTC2373IUH-16#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2373IUH-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 LTC2373IUH-16#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2373IUH-16#TRPBF?
All LTC2373IUH-16#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2373IUH-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 LTC2373IUH-16#TRPBF part is unused and in its original packaging.
Return procedure for LTC2373IUH-16#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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