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Analog Devices Inc. LTC2374IUH-16#TRPBF
- Part No.:
- LTC2374IUH-16#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
LTC2374IUH-16#TRPBF.pdf
- Description:
- IC ADC 16BIT SAR 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,823
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Product details
Overview
LTC2374IUH-16#TRPBF from Analog Devices (formerly Linear Technology) 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 bipolar (±2.048 V) input ranges, and targets high-precision industrial data acquisition systems.
For engineers reviewing the LTC2374IUH-16#TRPBF datasheet, LTC2374IUH-16#TRPBF pinout, LTC2374IUH-16#TRPBF application, or LTC2374IUH-16#TRPBF equivalent, key selection criteria include guaranteed no missing codes at 16 bits, programmable 16-deep sequencer, SPI-compatible serial interface with 1.8–5 V I/O compatibility, and –40°C to +85°C industrial temperature grade.
Technical Context
The LTC2374IUH-16#TRPBF implements a low-crosstalk 8-channel analog multiplexer with configurable input topology per channel, enabling simultaneous support of mixed-signal sensor inputs in a single device. Its internal oscillator eliminates external clock dependency for conversion timing, and the nap/sleep power management modes scale current draw from 14 mA (1.6 Msps) to 60 µA (sleep), reducing thermal load in compact instrumentation.
It features a single-shot-capable reference buffer driving the internal 2.048 V reference, with overdrive capability up to 5 V on REFBUF and REFIN pins. The SPI interface supports daisy-chain configuration and includes BUSY, RDL, and CNV control signals for deterministic timing-critical for synchronized multi-ADC systems in PLCs and ATE.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes-guarantees monotonicity and full dynamic range utilization in precision measurement. |
| Sampling Rate | 1.6 Msps maximum-enables Nyquist sampling of signals up to 800 kHz without aliasing in wideband applications. |
| INL | ±1 LSB max across all input ranges-ensures accurate end-point linearity for calibration-critical systems like process transmitters. |
| SNR | 96 dB typical (fully differential), 93 dB (pseudo-differential)-supports >15.6 ENOB for high-fidelity signal capture in vibration monitoring. |
| Power Dissipation | 55 mW typical at 1.6 Msps; 300 µW in sleep mode-reduces thermal design burden in sealed portable analyzers. |
| Reference | Onboard 2.048 V ±20 ppm/°C tempco reference with buffer-eliminates external reference IC and associated layout sensitivity. |
| Interface | SPI-compatible, 1.8–5 V logic-interoperates directly with FPGA, ARM Cortex-M, and DSP I/O without level-shifting circuitry. |
Pinout & Package
32-lead 5 mm × 5 mm plastic QFN (UH package) with exposed pad soldered to PCB ground. Pin 33 is the exposed thermal pad, electrically connected to GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH7 | Analog input channels | Eight independent single-ended or differential-capable inputs; selectable per-channel range via configuration register. |
| COM | Common-mode reference | Provides return path for pseudo-differential inputs; tied to mid-scale voltage for bipolar/unipolar operation. |
| MUXOUT+, MUXOUT– | Multiplexer output pair | Differential output of selected channel; drives ADCIN+ and ADCIN– for fully differential conversion. |
| ADCIN+, ADCIN– | ADC core inputs | Direct SAR core inputs; accept fully differential signals up to ±4.096 V or buffered MUX outputs. |
| CNV | Conversion start | Edge-triggered command initiating sample-and-hold and conversion; supports precise timing synchronization. |
| BUSY | Conversion status | Active-high open-drain signal indicating ongoing conversion; used for interrupt-driven or polling-based readout. |
| SDO, SDI, SCK, RDL | SPI interface signals | Standard 4-wire SPI with read-data latch (RDL) enabling deterministic data capture timing independent of SCK edge. |
| REFBUF, REFIN | Reference control | REFBUF enables internal reference buffer output (4.096 V); REFIN accepts external 2.048 V reference or disables internal buffer. |
| VDD, OVDD, GND | Power supplies | VDD = 4.75–5.25 V analog supply; OVDD = 1.71–5.25 V digital I/O supply-decoupling critical for SNR performance. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable 16-entry sequencer | Automates channel scanning order and input range selection per conversion-reduces host processor overhead in multi-sensor monitoring. |
| Selectable digital gain compression | Configurable scaling of output codes to optimize dynamic range usage when input signal amplitude is known and bounded. |
| No pipeline delay or cycle latency | Single-cycle conversion result availability-enables real-time closed-loop control with deterministic timing in motor drives. |
| Channel-to-channel crosstalk | –110 dB at 100 kHz-prevents interference between adjacent active and inactive channels in dense sensor arrays. |
| Aperture jitter | 4 ps RMS-limits sampling uncertainty to <0.025 LSB at 1 MHz input, preserving SFDR >112 dB. |
Applications
| Programmable Logic Controllers | Industrial Process Control |
|---|---|
Use Scenario: High-density 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 SPI interface to PLC CPU backplane. Use Value: ±1 LSB INL and 96 dB SNR ensure traceable calibration compliance; 8-channel integration reduces component count per slot by 4× vs discrete solutions. | Use Scenario: Distributed I/O nodes in oil & gas refineries measuring valve position feedback and tank level with intrinsic safety requirements. IC Role / Device Role / Timing Role: Isolated analog input conditioner feeding isolated microcontroller; operates reliably across –40°C to +85°C ambient. Use Value: Onboard reference and low drift (20 ppm/°C) eliminate external trimming; sleep mode cuts standby power to 300 µW for battery-backed diagnostics. |
| High Speed Data Acquisition | Portable or Compact Instrumentation |
Use Scenario: Benchtop oscilloscopes and spectrum analyzers requiring >1 MSps sampling with >90 dB SFDR for harmonic analysis. IC Role / Device Role / Timing Role: Core digitizer stage with fully differential input handling and 1.6 Msps throughput synchronized to system clock. Use Value: 115 dB SFDR (typical) and –114 dB THD enable clean spectral resolution of low-level harmonics in EMI testing equipment. | Use Scenario: Handheld power quality analyzers capturing voltage/current waveforms in electrical distribution panels. IC Role / Device Role / Timing Role: Low-power, high-accuracy ADC subsystem powered from Li-ion battery with minimal thermal dissipation. Use Value: 55 mW active power and 5 mm × 5 mm QFN footprint enable 8-channel acquisition in sub-100 cm³ enclosures without forced cooling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7606C-16 | 8-channel, 16-bit, 1 Msps; integrated analog front-end with anti-aliasing filters and overvoltage protection; requires external reference. | Better suited for noisy industrial environments due to ±20 V overvoltage tolerance and on-chip filtering; lower throughput than LTC2374IUH-16#TRPBF. | Select AD7606C-16 when robustness against field wiring faults and built-in signal conditioning outweigh need for 1.6 Msps speed. |
| ADS8688IPWR | 8-channel, 16-bit, 1 Msps; true bipolar input (±10 V) with internal PGA; SPI interface; 3.3 V only I/O. | Offers programmable gain (±0.25× to ±4×) for direct connection to low-level sensors; lacks internal reference and has lower SNR (91 dB). | Choose ADS8688IPWR when variable sensor sensitivity demands on-chip PGA and system uses 3.3 V logic exclusively. |
Compared with AD7606C-16 and ADS8688IPWR, the LTC2374IUH-16#TRPBF delivers highest throughput (1.6 Msps) and best SNR (96 dB) in its class, with integrated reference and widest I/O voltage range (1.8–5 V), making it optimal for bandwidth-constrained, precision-critical designs where board space and BOM count are constrained.
Availability
LTC2374IUH-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 across extended temperature ranges and long production lifecycles.
Supply support for LTC2374IUH-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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC2374IUH-16#TRPBF belongs to ADI's high-speed precision SAR ADC product line, engineered for applications demanding both speed (>1 Msps) and accuracy (<±1 LSB INL) in harsh industrial environments.
FAQ
What is the operating temperature range of the LTC2374IUH-16#TRPBF?
The LTC2374IUH-16#TRPBF is rated for operation from –40°C to +85°C, meeting industrial-grade environmental requirements. This specification is confirmed in the Absolute Maximum Ratings table and applies across all electrical performance parameters unless otherwise noted in the datasheet's "l"-marked conditions.
Does the LTC2374IUH-16#TRPBF require an external reference voltage?
No, the LTC2374IUH-16#TRPBF integrates a 2.048 V temperature-compensated reference with 20 ppm/°C max drift and a dedicated reference buffer (REFBUF). An external reference may be applied via REFIN for improved stability or different voltage levels, but it is not required for basic operation.
How does the programmable sequencer in the LTC2374IUH-16#TRPBF function?
The LTC2374IUH-16#TRPBF includes a 16-deep sequencer that stores channel selection, input range, and gain settings for automated round-robin or custom scan patterns. Configuration is performed via SPI writes to dedicated registers, eliminating continuous host intervention during high-speed acquisition.
What is the significance of the "UH" package designation in LTC2374IUH-16#TRPBF?
The "UH" denotes a 32-lead, 5 mm × 5 mm plastic QFN package with exposed thermal pad (Pin 33), optimized for low-inductance grounding and efficient heat dissipation. This package is standard across the LTC2374 family and supports reflow soldering per JEDEC J-STD-020.
Can the LTC2374IUH-16#TRPBF interface directly with a 1.8 V microcontroller?
Yes, the LTC2374IUH-16#TRPBF supports OVDD from 1.71 V to 5.25 V, allowing direct SPI communication with 1.8 V logic without level shifters. Digital input thresholds scale with OVDD (VIH = 0.8 × OVDD, VIL = 0.2 × OVDD), ensuring robust noise margins at 1.8 V operation.
LTC2374IUH-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):
- 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#TRPBF FAQ
1.How can I place an order for LTC2374IUH-16#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2374IUH-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 LTC2374IUH-16#TRPBF reliable?
The price and inventory of LTC2374IUH-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 LTC2374IUH-16#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2374IUH-16#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2374IUH-16#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2374IUH-16#TRPBF?
LTC2374IUH-16#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2374IUH-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 LTC2374IUH-16#TRPBF?
For technical support, including LTC2374IUH-16#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2374IUH-16#TRPBF requirements.
6.How does Aetrix verify that LTC2374IUH-16#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2374IUH-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 LTC2374IUH-16#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2374IUH-16#TRPBF?
All LTC2374IUH-16#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2374IUH-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 LTC2374IUH-16#TRPBF part is unused and in its original packaging.
Return procedure for LTC2374IUH-16#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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