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Analog Devices Inc. LTC2373IUH-16#PBF
- Part No.:
- LTC2373IUH-16#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
LTC2373IUH-16#PBF.pdf
- Description:
- IC ADC 16BIT SAR 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:146
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Product details
Overview
LTC2373IUH-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 LTC2373IUH-16#PBF datasheet, LTC2373IUH-16#PBF pinout, LTC2373IUH-16#PBF application, or LTC2373IUH-16#PBF equivalent, key selection criteria include guaranteed operation to 85°C, programmable 16-deep sequencer, no pipeline delay, SPI-compatible 1.8–5 V I/O, and low 40 mW typical power dissipation at full throughput.
Technical Context
The LTC2373IUH-16#PBF implements a true SAR architecture with no latency or pipeline delay, enabling deterministic timing for real-time control loops. Its highly configurable 8-channel multiplexer delivers <–107 dB channel-to-channel crosstalk and supports independent input range selection per channel via SPI configuration.
Internal reference buffering includes a low-drift (≤20 ppm/°C) 2.048 V reference with overdrive capability up to 5 V, and a dedicated reference buffer output (REFBUF) with 4.096 V nominal output. Conversion timing is governed by an internal oscillator, eliminating external clock dependency while maintaining 460 ns conversion time and 1 µs minimum cycle period.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes - ensures full dynamic range utilization in precision measurement applications. |
| Sampling Rate | 1 Msps maximum - supports high-speed transient capture in ATE and process monitoring. |
| INL | ±1 LSB (max) across all input ranges - guarantees monotonicity and accurate end-point calibration. |
| SNR | 96 dB (fully differential, fIN = 1 kHz) - enables >15.6 effective number of bits (ENOB) in noise-sensitive sensor interfaces. |
| Power Dissipation | 40 mW at 1 Msps, 300 µW in sleep mode - scales with sampling rate for battery-aware portable instrumentation. |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments without derating. |
| Reference | Integrated 2.048 V ±0.25% (25°C), ≤20 ppm/°C drift - eliminates external reference component count and layout complexity. |
Pinout & Package
Package: 32-lead 5 mm × 5 mm plastic QFN (UH package); exposed pad 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; selectable per-channel range via sequencer configuration. |
| COM | Common-mode reference | Return node for pseudo-differential configurations; sets common-mode voltage for bipolar/unipolar modes. |
| ADCIN+, ADCIN– | Differential analog input pair | Primary high-precision input path for fully differential mode; accepts ±4.096 V swing. |
| MUXOUT+, MUXOUT– | Multiplexer output pair | Buffered outputs of internal mux; used for external signal conditioning or verification before ADC core. |
| CNV | Conversion start trigger | Edge-triggered input initiating sample-and-hold and conversion; supports precise timing synchronization. |
| BUSY | Conversion status indicator | Active-high open-drain output signaling ongoing conversion; used for hardware handshaking. |
| SDO, SDI, SCK, RDL | SPI serial interface | Full-duplex SPI with read-data latch (RDL) for multi-device daisy-chaining and glitch-free data capture. |
| REFIN, REFBUF | Reference input/buffer output | REFIN accepts external 2.048 V reference; REFBUF provides buffered 4.096 V output for driving external circuitry. |
| VDD, OVDD, GND | Power supplies | VDD = 4.75–5.25 V analog supply; OVDD = 1.71–5.25 V I/O supply - enables mixed-voltage system interfacing. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable 16-deep sequencer | Enables automatic round-robin or custom channel/range sequencing without host CPU intervention. |
| Selectable digital gain compression | Adjusts output code scaling to maximize dynamic range usage when input signal amplitude is known. |
| No pipeline delay / zero cycle latency | Delivers first valid conversion result within one cycle - critical for closed-loop feedback timing. |
| Onboard reference buffer with wake-up time | REFBUF wakes in 200 ms after enable; supports low-power duty-cycled operation in portable systems. |
| Low crosstalk multiplexer (–107 dB) | Minimizes inter-channel interference in multi-sensor monitoring, preserving signal integrity during simultaneous sampling. |
Applications
| Programmable Logic Controllers | Industrial Process Control |
|---|---|
Use Scenario: High-accuracy analog input modules acquiring temperature, pressure, and flow sensor signals in factory automation cabinets. IC Role / Device Role / Timing Role: Primary 16-bit ADC front-end with sequenced multi-channel sampling and deterministic conversion timing. Use Value: ±1 LSB INL and 96 dB SNR ensure compliance with IEC 61000-4-30 Class A power quality monitoring requirements. | Use Scenario: Distributed I/O systems measuring pH, conductivity, and dissolved oxygen in chemical processing plants. IC Role / Device Role / Timing Role: Precision ADC with integrated reference and wide –40°C to +85°C operating range for uncooled field installations. Use Value: Onboard 2.048 V reference eliminates calibration drift from external components, reducing long-term maintenance. |
| High Speed Data Acquisition | Portable or Compact Instrumentation |
Use Scenario: Benchtop oscilloscopes and spectrum analyzers capturing fast transients with >100 kHz bandwidth. IC Role / Device Role / Timing Role: Core SAR ADC with 22 MHz –3 dB input linear bandwidth and 4 ps RMS aperture jitter. Use Value: 96 dB SNR at 1 kHz and 114 dB SFDR enable >15-bit ENOB even at full 1 Msps throughput. | Use Scenario: Handheld multimeters and portable vibration analyzers requiring battery life extension. IC Role / Device Role / Timing Role: Low-power ADC with nap mode (1.25 mA) and sleep mode (300 µW) for duty-cycled sampling. Use Value: 40 mW typical power at full rate and automatic nap between conversions reduce average power by >75% vs. continuous operation. |
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 external reference and requires ±5 V analog supply; no integrated REFBUF. | Requires additional reference IC and dual-supply design; better suited for legacy systems already using external references. | Select when existing board layout supports external reference and higher analog supply headroom is available. |
| ADS8688IPWR | 8-channel, 16-bit, 100 ksps max; integrated 4.096 V reference; SPI interface; lower power (14 mW), but slower speed. | Targeted at lower-throughput, ultra-low-power applications where 1 Msps is unnecessary. | Choose for battery-powered devices prioritizing energy efficiency over speed, with relaxed timing constraints. |
Compared with AD7606C-16 and ADS8688IPWR, the LTC2373IUH-16#PBF uniquely combines on-chip 2.048 V reference, REFBUF output, and guaranteed 1 Msps operation in a single 5 V supply system - simplifying BOM and layout while delivering best-in-class SNR for industrial-grade data acquisition.
Availability
LTC2373IUH-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 LTC2373IUH-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 high-accuracy, low-latency industrial data acquisition - emphasizing integrated references, flexible input configurations, and robust operation from –40°C to +125°C.
FAQ
What is the maximum sampling rate supported by the LTC2373IUH-16#PBF?
The LTC2373IUH-16#PBF supports a maximum sampling rate of 1 Msps, with a guaranteed minimum conversion time of 460 ns and cycle time of 1 µs. This throughput is maintained across its full –40°C to +85°C operating range and all supported input ranges (fully differential, pseudo-differential unipolar, and pseudo-differential bipolar).
Does the LTC2373IUH-16#PBF require an external reference voltage?
No, the LTC2373IUH-16#PBF integrates a precision 2.048 V temperature-compensated reference with ≤20 ppm/°C drift and a dedicated reference buffer (REFBUF) outputting 4.096 V. An external reference may be applied to REFIN only if higher accuracy or different voltage is required; otherwise, the internal reference is fully functional and calibrated.
How does the programmable sequencer in the LTC2373IUH-16#PBF operate?
The LTC2373IUH-16#PBF features a 16-deep programmable sequencer that stores channel selection, input range, and gain settings. Once configured via SPI, it autonomously cycles through entries on each CNV pulse - eliminating host processor overhead and enabling deterministic, jitter-free multi-channel sampling without software intervention.
What power-saving modes does the LTC2373IUH-16#PBF offer?
The LTC2373IUH-16#PBF offers two low-power states: nap mode (1.25 mA total supply current) automatically engaged between conversions at full throughput, and sleep mode (300 µW) activated via SPI command for extended idle periods. Both modes retain register settings and reference state, enabling fast wake-up (<1 µs from nap, ~200 ms from sleep for REFBUF stabilization).
Is the LTC2373IUH-16#PBF pin-compatible with other members of the LTC2373 family?
Yes, the LTC2373IUH-16#PBF shares identical 32-lead 5 mm × 5 mm QFN (UH) packaging and pinout with LTC2373CUH-16#PBF and LTC2373HUH-16#PBF. Only the temperature grade differs: C (0°C to 70°C), I (–40°C to 85°C), and H (–40°C to 125°C). No PCB redesign is needed when upgrading or downgrading temperature variants.
LTC2373IUH-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 ~ 85°C
- Supplier Device Package:
- 32-QFN (5x5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2373IUH-16#PBF FAQ
1.How can I place an order for LTC2373IUH-16#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2373IUH-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 LTC2373IUH-16#PBF reliable?
The price and inventory of LTC2373IUH-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 LTC2373IUH-16#PBF is usually 5 days.
3.What payment methods are accepted for LTC2373IUH-16#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2373IUH-16#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2373IUH-16#PBF?
LTC2373IUH-16#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2373IUH-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 LTC2373IUH-16#PBF?
For technical support, including LTC2373IUH-16#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2373IUH-16#PBF requirements.
6.How does Aetrix verify that LTC2373IUH-16#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2373IUH-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 LTC2373IUH-16#PBF meets industry standards.
7.What is the process for return or replacement of LTC2373IUH-16#PBF?
All LTC2373IUH-16#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2373IUH-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 LTC2373IUH-16#PBF part is unused and in its original packaging.
Return procedure for LTC2373IUH-16#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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