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Analog Devices Inc. LTC2374IUH-16#PBF
- Part No.:
- LTC2374IUH-16#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
LTC2374IUH-16#PBF.pdf
- Description:
- IC ADC 16BIT SAR 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,390
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Product details
Overview
LTC2374IUH-16#PBF from Analog Devices is a 16-bit, 1.6 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 pseudo-differential bipolar (±2.048 V) input ranges, and is used in high-speed industrial data acquisition systems requiring low crosstalk and no missing codes.
For engineers reviewing the LTC2374IUH-16#PBF datasheet, LTC2374IUH-16#PBF pinout, LTC2374IUH-16#PBF application, or LTC2374IUH-16#PBF equivalent, key selection criteria include guaranteed 16-bit no-missing-codes performance across all input modes, programmable 16-deep sequencer for multi-channel sampling, SPI-compatible serial interface supporting 1.8–5 V I/O, and -40°C to +85°C industrial temperature grade with 32-lead 5 mm × 5 mm QFN package.
Technical Context
The LTC2374IUH-16#PBF implements a true SAR architecture with no pipeline delay or cycle latency, enabling deterministic conversion timing. Its highly configurable 8-channel multiplexer delivers ≤ –110 dB channel-to-channel crosstalk and supports selectable common-mode voltage ranges per input mode - including ±VREFBUF/2 for bipolar and VREFBUF for unipolar operation.
Conversion is controlled by an internal oscillator (tCONV = 360–427 ns), eliminating external clock dependency. The device features automatic nap mode between conversions and a dedicated sleep mode (300 µW), scaling power dissipation with sample rate while maintaining full 16-bit accuracy and 93–96 dB SNR across input configurations.
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 | 1.6 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 high-accuracy DC and low-frequency measurements without calibration. |
| SNR | 96 dB (fully differential, fIN = 1 kHz) - delivers 15.7 effective bits for noise-sensitive applications like sensor signal conditioning. |
| Reference | Onboard 2.048 V ±20 ppm/°C tempco reference with buffer - eliminates need for external reference and reduces BOM count. |
| Power | 55 mW at 1.6 Msps; 300 µW in sleep mode - enables energy-efficient operation in portable or thermally constrained systems. |
| Interface | SPI-compatible serial I/O with 1.8–5 V logic compatibility - simplifies interfacing with diverse host processors and FPGAs. |
Pinout & Package
Package: 32-lead 5 mm × 5 mm 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; configured via internal sequencer for flexible channel scanning. |
| COM | Common-mode reference | Provides return path for pseudo-differential inputs; sets common-mode voltage for bipolar/unipolar ranges. |
| MUXOUT+, MUXOUT– | Multiplexer output pair | Differential output of selected channel; connects directly to ADC core's ADCIN+/ADCIN– for minimal signal degradation. |
| ADCIN+, ADCIN– | Core ADC input terminals | Final differential input to SAR array; accepts fully differential signals up to ±4.096 V with 22 MHz bandwidth. |
| REFIN | Reference input | Accepts external 1.25–2.4 V reference or disables internal buffer when driven to 0 V for REFBUF overdrive mode. |
| REFBUF | Reference buffer output | Provides 4.096 V buffered reference (±0.5% tolerance) for ADC use; requires external 47 µF bypass capacitor. |
| CNV | Conversion start | Edge-triggered command initiating sample-and-hold and conversion; minimum pulse width 20 ns. |
| BUSY | Conversion status indicator | Active-high signal indicating ongoing conversion; used for timing synchronization with host controller. |
| SDO, SDI, SCK, RDL | SPI serial interface | Full-duplex SPI with read-data latch (RDL) control; supports up to 100 MHz SCK for high-throughput data transfer. |
| VDD, OVDD, GND | Power supplies | VDD = 4.75–5.25 V analog supply; OVDD = 1.71–5.25 V digital I/O supply; multiple GND pins ensure low-noise grounding. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable 16-deep sequencer | Enables autonomous multi-channel sampling without host intervention - ideal for PLC scan cycles and ATE test sequences. |
| Selectably configurable input ranges | Single device supports fully differential (±4.096 V), pseudo-differential unipolar (0–4.096 V), and bipolar (±2.048 V) - reduces design variants and inventory SKUs. |
| No pipeline delay / zero cycle latency | Immediate data availability after BUSY deassertion - critical for closed-loop control and real-time feedback systems. |
| On-chip reference buffer with wake-up time | 200 ms wake-up time after sleep; allows rapid resumption of high-precision conversion without external reference stabilization delays. |
| Low crosstalk multiplexer (≤ –110 dB) | Minimizes interference between active and inactive channels - essential for simultaneous multi-sensor monitoring in process control. |
Applications
| Programmable Logic Controllers | Industrial Process Control |
|---|---|
Use Scenario: High-density analog input modules in modular PLC chassis acquiring temperature, pressure, and flow sensor signals across 8 channels. IC Role / Device Role / Timing Role: Primary 16-bit SAR ADC performing synchronized multi-channel sampling with programmable sequencing and on-board reference stability. Use Value: Eliminates external reference and level-shifting circuitry while delivering ±1 LSB INL across –40°C to +85°C - reducing module BOM cost and calibration effort. | Use Scenario: Distributed I/O nodes in refinery or chemical plant control systems measuring analog field transmitter outputs (4–20 mA with shunt). IC Role / Device Role / Timing Role: Precision ADC front-end converting conditioned sensor signals with fully differential input support for noise rejection in electrically noisy environments. Use Value: 96 dB SNR and ≤ –110 dB crosstalk ensure accurate simultaneous acquisition of multiple loop currents without mutual interference. |
| High-Speed Data Acquisition | Portable Instrumentation |
Use Scenario: Benchtop oscilloscopes and spectrum analyzers requiring >1 MSPS sampling with DC accuracy and low harmonic distortion. IC Role / Device Role / Timing Role: Core digitizer IC providing deterministic 360–427 ns conversion time and no pipeline latency for real-time waveform reconstruction. Use Value: –114 dB THD and 115 dB SFDR at 1 kHz enable clean spectral analysis without post-processing correction. | Use Scenario: Battery-powered handheld multimeters and sensor analyzers needing high resolution, low power, and compact form factor. IC Role / Device Role / Timing Role: Low-power 16-bit ADC operating in nap mode between samples and sleep mode during idle periods. Use Value: 300 µW sleep current and 55 mW active power at 1.6 Msps extend battery life while maintaining full 16-bit fidelity and no missing codes. |
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, 1 MSPS, integrated reference, parallel + SPI interface; ±0.5 LSB INL (typ), 93.5 dB SNR. | Higher power (110 mW), no programmable sequencer, parallel interface adds routing complexity. | Preferred when system requires parallel readout or higher INL tolerance; not drop-in due to different pinout and timing model. |
| ADS8688 | 8-channel, 16-bit, 1 MSPS, integrated reference, SPI-only; ±1.5 LSB INL (max), 92 dB SNR, 5 V supply only. | Lower SNR and INL spec; no nap/sleep modes; limited to unipolar input range (0–VREF). | Valid alternative for cost-sensitive industrial DAQ where 92 dB SNR suffices and bipolar input is not required. |
Compared with AD7606C-16 and ADS8688, the LTC2374IUH-16#PBF offers superior SNR (96 dB), lower power (55 mW vs ≥110 mW), and unique nap/sleep modes - making it optimal for thermally constrained, noise-critical, or battery-assisted industrial instrumentation.
Availability
LTC2374IUH-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 and long production lifecycles.
Supply support for LTC2374IUH-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC2374 series belongs to Analog Devices' precision SAR ADC product line, designed specifically for industrial automation and test equipment demanding high speed, high resolution, low power, and robust operation across extended temperature ranges.
FAQ
What is the operating temperature range of the LTC2374IUH-16#PBF?
The LTC2374IUH-16#PBF is rated for –40°C to +85°C, qualifying it for industrial-grade applications. This specification is confirmed in the Absolute Maximum Ratings table and Electrical Characteristics section of the official datasheet, where all "l"-marked parameters apply across this full range. The device maintains ±1 LSB INL and 93–96 dB SNR within this interval.
Does the LTC2374IUH-16#PBF require an external reference?
No, the LTC2374IUH-16#PBF integrates a 2.048 V temperature-compensated reference with 20 ppm/°C max drift and a dedicated reference buffer (REFBUF pin). An external reference may be applied via REFIN (1.25–2.4 V), but it is optional - the internal reference is fully functional and calibrated for all input ranges.
How does the programmable sequencer in the LTC2374IUH-16#PBF work?
The LTC2374IUH-16#PBF includes a 16-deep configuration sequencer that stores channel selection, input range, and gain settings. Once programmed via SPI, it autonomously cycles through entries on each CNV pulse - enabling unattended multi-channel acquisition without host CPU involvement during sampling.
What power-saving modes does the LTC2374IUH-16#PBF support?
The LTC2374IUH-16#PBF supports two low-power states: nap mode (1.25 mA, 6.25 mW) automatically engaged between conversions, and sleep mode (300 µW) entered via SPI command. Sleep mode retains register state and reference bias, with 200 ms wake-up time to full operation - ideal for intermittent measurement tasks.
Can the LTC2374IUH-16#PBF interface with a 1.8 V microcontroller?
Yes, the LTC2374IUH-16#PBF supports 1.8 V to 5 V logic levels on its OVDD supply and SPI interface pins (SDO, SDI, SCK, RDL, BUSY). When OVDD = 1.8 V, VIH = 1.44 V and VIL = 0.36 V are guaranteed, ensuring reliable communication with 1.8 V hosts without level shifters.
LTC2374IUH-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):
- 1.6M
- Number of Inputs:
- 8
- Input Type:
- Differential, Pseudo-Differential, Single Ended
- 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:
- 1.71V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 32-QFN (5x5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2374IUH-16#PBF FAQ
1.How can I place an order for LTC2374IUH-16#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2374IUH-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 LTC2374IUH-16#PBF reliable?
The price and inventory of LTC2374IUH-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 LTC2374IUH-16#PBF is usually 5 days.
3.What payment methods are accepted for LTC2374IUH-16#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2374IUH-16#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2374IUH-16#PBF?
LTC2374IUH-16#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2374IUH-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 LTC2374IUH-16#PBF?
For technical support, including LTC2374IUH-16#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2374IUH-16#PBF requirements.
6.How does Aetrix verify that LTC2374IUH-16#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2374IUH-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 LTC2374IUH-16#PBF meets industry standards.
7.What is the process for return or replacement of LTC2374IUH-16#PBF?
All LTC2374IUH-16#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2374IUH-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 LTC2374IUH-16#PBF part is unused and in its original packaging.
Return procedure for LTC2374IUH-16#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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