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Analog Devices Inc. LTC2373HUH-16#PBF
- Part No.:
- LTC2373HUH-16#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
LTC2373HUH-16#PBF.pdf
- Description:
- IC ADC 16BIT SAR 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:267
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Product details
Overview
LTC2373HUH-16#PBF 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 LTC2373HUH-16#PBF datasheet, LTC2373HUH-16#PBF pinout, LTC2373HUH-16#PBF application, or LTC2373HUH-16#PBF equivalent, key selection criteria include guaranteed operation to 125°C, programmable sequencer depth of 16, no pipeline delay, SPI-compatible serial interface with 1.8–5 V I/O compatibility, and low 40 mW typical power dissipation at full throughput.
Technical Context
The LTC2373HUH-16#PBF implements a highly configurable 8-channel multiplexer with low crosstalk (<–107 dB) and selectable input configurations per channel. Its internal reference buffer delivers 4.096 V output with ±5 mV accuracy and 4–20 ppm/°C drift, enabling stable precision across temperature.
Conversion timing is governed by an internal oscillator (tCONV = 460–527 ns, tCYC = 1 µs), eliminating external clock dependency. The device features nap mode (1.25 mA) and sleep mode (300 µA), scaling power with sampling rate while maintaining zero-cycle latency and no missing codes over its full 16-bit range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes - ensures full dynamic range utilization in precision measurement. |
| Sampling Rate | 1 Msps maximum - supports real-time capture of fast transients in ATE and process control. |
| INL | ±1 LSB max over full temperature range - guarantees monotonicity and end-point accuracy for calibration-critical systems. |
| SNR | 96 dB (fully differential, fIN = 1 kHz) - enables >15.6 effective bits in noise-sensitive applications like portable instrumentation. |
| Operating Temp | –40°C to +125°C - qualified for under-hood automotive sensors and harsh industrial environments. |
| Power Dissipation | 40 mW at 1 Msps, 300 µW in sleep - allows thermal-constrained PCB layouts and battery-backed operation. |
| Reference | Onboard 2.048 V ref with 4–20 ppm/°C drift and 4.096 V buffered output - eliminates external reference design effort and layout sensitivity. |
Pinout & Package
Package: 32-lead 5 mm × 5 mm plastic QFN (UH package) with exposed pad soldered to GND for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH7 | Analog input channels | Eight independent inputs configurable as fully differential, pseudo-differential unipolar, or bipolar pairs. |
| COM | Common-mode reference | Return node for pseudo-differential modes; sets common-mode voltage for channel pairs. |
| ADCIN+, ADCIN– | Dedicated SAR input pair | Direct connection path to ADC core; bypasses multiplexer for highest-speed single-channel use. |
| MUXOUT+, MUXOUT– | Multiplexer output pair | Provides buffered post-mux signal for external filtering or monitoring before ADC conversion. |
| CNV | Conversion start trigger | Rising edge initiates sample-and-hold and conversion; supports precise timing control without external clock. |
| BUSY | Conversion status indicator | Active-high signal indicates ongoing conversion; used for handshaking with host processor or FPGA. |
| SDO, SDI, SCK, RDL | SPI-compatible serial interface | Full-duplex 4-wire interface supporting 1.8–5 V logic levels and up to 100 MHz SCK for rapid data readout. |
| REFBUF, REFIN | Reference buffer control and input | REFBUF outputs 4.096 V when enabled; REFIN accepts 1.25–2.4 V external reference or grounds buffer for internal use. |
| VDD, OVDD, GND | Power domains | VDD = 4.75–5.25 V analog supply; OVDD = 1.71–5.25 V digital I/O supply; separate GND pins minimize noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable 16-deep sequencer | Enables autonomous multi-channel scan patterns without host intervention, reducing CPU overhead in PLCs and DAQ systems. |
| Selectible digital gain compression | Adjusts output code scaling to optimize dynamic range usage for varying input signal amplitudes. |
| No pipeline delay / zero cycle latency | Delivers immediate conversion result after BUSY deassertion - critical for closed-loop control timing. |
| Internal oscillator-based timing | Removes need for external master clock, simplifying BOM and layout while ensuring deterministic tCYC = 1 µs. |
| Low crosstalk multiplexer (<–107 dB) | Prevents signal leakage between active and inactive channels, preserving accuracy in simultaneous multi-sensor monitoring. |
Applications
| Programmable Logic Controllers | Industrial Process Control |
|---|---|
Use Scenario: High-density analog input modules acquiring sensor data (temperature, pressure, flow) in factory automation cabinets. IC Role / Device Role / Timing Role: Primary 16-bit ADC front-end with 8-channel mux, handling multiple 4–20 mA loop receivers and RTD interfaces. Use Value: ±1 LSB INL and 96 dB SNR ensure traceable metrology-grade readings; 125°C rating supports operation near motor drives and power converters. | Use Scenario: Distributed I/O nodes in oil & gas refineries measuring valve position, tank level, and chemical concentration. IC Role / Device Role / Timing Role: Precision SAR ADC with programmable sequencer managing time-synchronized multi-sensor polling across hazardous-area barriers. Use Value: Integrated reference and nap/sleep modes reduce system-level calibration burden and enable low-power remote monitoring. |
| High Speed Data Acquisition | Portable or Compact Instrumentation |
Use Scenario: Benchtop oscilloscopes and spectrum analyzers capturing transient waveforms at ≥1 MSPS with DC-coupled inputs. IC Role / Device Role / Timing Role: Core digitizer IC providing fully differential input stage, low aperture jitter (4 ps RMS), and deterministic 1 µs cycle time. Use Value: 96 dB SNR and –114 dB THD support >15 ENOB at 1 kHz; no missing codes prevents waveform distortion artifacts. | Use Scenario: Handheld multimeters and portable power quality analyzers requiring battery life >8 hours and sub-0.1% measurement accuracy. IC Role / Device Role / Timing Role: Low-power 16-bit ADC with integrated reference and 300 µW sleep mode, enabling wake-on-event architecture. Use Value: 40 mW active power and 5 mm × 5 mm QFN footprint minimize thermal rise and board area in space-constrained enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 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 additional reference IC and dual-supply design; better suited for systems already using precision external references. | Select AD7606C-16 when leveraging existing ±5 V rails and external reference infrastructure; avoid if minimizing BOM count and layout area is critical. |
| ADS8688IPWR | 8-channel, 16-bit, 1 MSPS, integrated 4.096 V reference, but only specified to 85°C and lacks programmable sequencer. | Not rated for 125°C operation; sequencer must be implemented externally via MCU or FPGA, increasing firmware complexity. | Choose ADS8688IPWR for cost-sensitive industrial controls operating below 85°C where external sequencing is acceptable. |
Compared with AD7606C-16 and ADS8688IPWR, the LTC2373HUH-16#PBF uniquely combines 125°C operation, on-chip 2.048 V reference with buffered 4.096 V output, and autonomous 16-step sequencer - reducing system-level design effort for high-reliability, thermally demanding applications.
Availability
LTC2373HUH-16#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.
Supply support for LTC2373HUH-16#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 is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC2373 family was designed for precision, low-power, multi-channel data acquisition in thermally demanding environments - emphasizing integrated reference stability, sequencer autonomy, and guaranteed 125°C operation.
FAQ
What is the maximum operating temperature specification for the LTC2373HUH-16#PBF?
The LTC2373HUH-16#PBF is rated for continuous operation from –40°C to +125°C. This H-grade qualification is confirmed in the Absolute Maximum Ratings table and supported by temperature-tested performance data across all key parameters including INL, SNR, and reference drift - making it suitable for under-hood automotive sensing and high-temperature industrial control applications where standard commercial or industrial grade ADCs would fail.
Does the LTC2373HUH-16#PBF require an external reference, or does it include an internal one?
The LTC2373HUH-16#PBF includes an onboard 2.048 V temperature-compensated reference with 4–20 ppm/°C drift and a dedicated reference buffer that outputs 4.096 V. The REFIN pin can accept an external reference (1.25–2.4 V) to override the internal source, but default operation uses the internal reference - eliminating the need for external components in most precision applications.
How many analog input channels does the LTC2373HUH-16#PBF support, and what input configurations are available?
The LTC2373HUH-16#PBF supports eight analog input channels (CH0–CH7) with a highly configurable multiplexer. Each channel pair can be set to fully differential (±4.096 V), pseudo-differential unipolar (0–4.096 V), or pseudo-differential bipolar (±2.048 V) input ranges - all with guaranteed ±1 LSB INL and no missing codes across the full 16-bit resolution.
What is the power consumption profile of the LTC2373HUH-16#PBF at full throughput and in low-power states?
At 1 Msps sampling rate, the LTC2373HUH-16#PBF consumes 40 mW typical (11 mA total supply current). In nap mode between conversions, it draws 1.25 mA; in sleep mode, it drops to 300 µW (60 µA). These states are controlled via dedicated command registers and require no external circuitry - enabling adaptive power management in battery-powered or thermally constrained designs.
Is the LTC2373HUH-16#PBF compatible with standard SPI interfaces, and what logic voltage levels does it support?
Yes, the LTC2373HUH-16#PBF features a SPI-compatible 4-wire serial interface (SDO, SDI, SCK, RDL) supporting 1.8 V, 2.5 V, 3.3 V, and 5 V logic levels via the OVDD supply pin. It operates up to 100 MHz SCK frequency (10 ns min pulse width) and provides BUSY-driven handshaking - ensuring seamless integration with FPGAs, microcontrollers, and DSPs across diverse voltage domains.
LTC2373HUH-16#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:
- 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 ~ 125°C
- Supplier Device Package:
- 32-QFN (5x5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2373HUH-16#PBF FAQ
1.How can I place an order for LTC2373HUH-16#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2373HUH-16#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 LTC2373HUH-16#PBF reliable?
The price and inventory of LTC2373HUH-16#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2373HUH-16#PBF is usually 5 days.
3.What payment methods are accepted for LTC2373HUH-16#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2373HUH-16#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2373HUH-16#PBF?
LTC2373HUH-16#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2373HUH-16#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 LTC2373HUH-16#PBF?
For technical support, including LTC2373HUH-16#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2373HUH-16#PBF requirements.
6.How does Aetrix verify that LTC2373HUH-16#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2373HUH-16#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 LTC2373HUH-16#PBF meets industry standards.
7.What is the process for return or replacement of LTC2373HUH-16#PBF?
All LTC2373HUH-16#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2373HUH-16#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 LTC2373HUH-16#PBF part is unused and in its original packaging.
Return procedure for LTC2373HUH-16#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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