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Analog Devices Inc. LTC2376HMS-18#PBF
- Part No.:
- LTC2376HMS-18#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TFSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC2376HMS-18#PBF.pdf
- Description:
- IC ADC 18BIT SAR 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,555
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Product details
Overview
LTC2376HMS-18#PBF from Analog Devices (formerly Linear Technology) is an 18-bit, 250ksps successive approximation register (SAR) analog-to-digital converter with ±1.75LSB INL max, 102dB SNR at 2kHz, and fully differential ±VREF input range (2.5V–5.1V). It operates from a 2.5V supply, consumes only 3.4mW at full speed, and features digital gain compression (DGC) for single-supply amplifier interfacing - used in high-precision medical imaging and industrial data acquisition systems.
For engineers reviewing the LTC2376HMS-18#PBF datasheet, LTC2376HMS-18#PBF pinout, LTC2376HMS-18#PBF application, or LTC2376HMS-18#PBF equivalent, key selection criteria include guaranteed 18-bit no-missing-codes operation over –40°C to +125°C, SPI-compatible daisy-chain interface, internal conversion clock, and DGC-enabled 0.5V–4.5V input range with 5V reference.
Technical Context
The LTC2376HMS-18#PBF implements a charge-redistribution SAR architecture with a 18-bit CDAC and differential comparator, achieving zero-cycle latency and no pipeline delay. Its conversion timing is governed by an internal oscillator, eliminating external clock dependency for sampling.
Digital gain compression (DGC) is controlled via the REF/DGC pin: when grounded, it remaps the ADC's full-scale range from ±VREF to 0.1×VREF to 0.9×VREF, enabling rail-to-rail input swing compatibility with single-supply amplifiers while preserving full 18-bit resolution and monotonicity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 18-bit - delivers 262,144 distinct output codes with guaranteed no missing codes across temperature. |
| Sampling Rate | 250ksps - supports real-time acquisition of signals up to 125kHz Nyquist bandwidth without undersampling. |
| SNR | 102dB (typ, fIN = 2kHz, VREF = 5V) - enables >16.9 effective number of bits (ENOB) in precision measurement applications. |
| INL | ±1.75LSB (max) - ensures linearity error remains under ±0.0068% of full scale, critical for calibration-sensitive instrumentation. |
| Power Consumption | 3.4mW at 250ksps - achieves 13.6nJ/conversion efficiency, suitable for thermally constrained or battery-backed systems. |
| Operating Temperature | –40°C to +125°C - qualified for extended-temperature industrial and automotive under-hood environments. |
| Digital Interface | SPI-compatible with 1.8V–5V OVDD - supports direct connection to diverse host controllers without level-shifting circuitry. |
Pinout & Package
Package: 16-lead plastic MSOP (5mm × 4.4mm), exposed pad not present (unlike DFN variant); rated for –40°C to +125°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CHAIN (1) | Mode selector | Low = normal SPI mode (RDL/SDI as bus enable); high = daisy-chain mode (RDL/SDI as serial data input). |
| VDD (2) | Analog supply | 2.5V ±62.5mV supply for core ADC; requires 10µF ceramic bypass to GND for noise suppression. |
| IN+, IN– (4,5) | Differential analog inputs | Accept ±VREF (2.5V–5.1V) fully differential signal; input capacitance 45pF in sample mode, 5pF in hold mode. |
| REF (7) | Reference voltage input | Defines full-scale range; decoupled with 47µF X5R ceramic capacitor; supports external or internal reference sources. |
| REF/DGC (8) | DGC control / reference select | Tied to GND → enables DGC (0.1×VREF to 0.9×VREF input range); tied to REF → disables DGC (±VREF range). |
| CNV (9) | Convert trigger | Rising edge initiates conversion and powers up ADC; auto power-down occurs between conversions. |
| BUSY (11) | Conversion status indicator | Active-high open-drain output signaling conversion in progress; synchronized to CNV edge. |
| RDL/SDI (12) | Serial interface control/data | Function depends on CHAIN state; in chain mode, accepts MSB-first serial data from upstream ADC. |
| SCK (13) | Serial clock input | Accepts up to 100MHz SCK (10ns min period); controls data shift-out timing on rising edges. |
| SDO (14) | Serial data output | Outputs 18-bit 2's complement code MSB first; compatible with standard SPI read protocols. |
| OVDD (15) | I/O supply | 1.71V–5.25V logic supply; sets VIH/VIL thresholds; bypassed with 0.1µF ceramic capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| Digital Gain Compression (DGC) | Eliminates need for negative supply in front-end amplifiers by mapping full-scale input to 0.1×VREF–0.9×VREF, enabling single 5.5V supply operation for drivers like LT6350. |
| No cycle latency & zero pipeline delay | Delivers deterministic conversion completion within 3µs (tCONV max), enabling precise time-critical sampling in closed-loop control and ATE. |
| Internal conversion clock | Removes dependency on external timing components, simplifying PCB layout and reducing BOM count in space-constrained designs. |
| Auto power-down between conversions | Reduces current draw to ≤0.9µA (H-grade) during idle periods, scaling power linearly with sample rate for ultra-low average power in burst-mode systems. |
| Guaranteed operation to +125°C | Validated performance over full industrial temperature range, including SNR ≥98dB and INL ≤±1.75LSB, supporting harsh-environment deployment. |
Applications
| Medical Imaging Signal Chain | High-Speed Industrial Data Acquisition |
|---|---|
Use Scenario: Digitizing low-noise, wide-dynamic-range analog outputs from ultrasound transducer receive paths or MRI gradient monitoring circuits. IC Role / Device Role / Timing Role: Primary 18-bit SAR ADC capturing baseband signals at 250ksps with <4ps aperture jitter and 102dB SNR to preserve image fidelity. Use Value: DGC enables single-supply 5.5V LT6350 driver integration, reducing system power and board area versus dual-rail alternatives. |
Use Scenario: Real-time monitoring of motor phase currents, vibration sensors, or pressure transducers in predictive maintenance systems. IC Role / Device Role / Timing Role: High-accuracy, low-latency digitizer interfaced via daisy-chained SPI to microcontroller for synchronized multi-channel sampling. Use Value: Guaranteed no-missing-codes and ±1.75LSB INL ensure traceable calibration across temperature, meeting IEC 61000-4-30 Class A compliance requirements. |
| Portable Precision Instrumentation | Automotive Battery Management Systems |
Use Scenario: Handheld multimeters, portable oscilloscopes, or field-deployable sensor analyzers requiring battery longevity and thermal robustness. IC Role / Device Role / Timing Role: Low-power 18-bit ADC operating at 250ksps or scaled down to 250sps (3.4µW), with internal clock and auto power-down. Use Value: 3.4mW active power and sub-µA shutdown current extend battery life while maintaining full resolution and linearity over –40°C to +70°C ambient. |
Use Scenario: Cell voltage and temperature monitoring in high-voltage EV battery packs where accuracy and reliability at elevated temperatures are critical. IC Role / Device Role / Timing Role: Precision ADC measuring isolated cell voltages via resistive dividers, operating continuously at +125°C junction temperature. Use Value: H-grade qualification ensures stable INL (±1.75LSB max) and SNR (≥98dB) at end-of-life thermal conditions, supporting ASIL-B functional safety goals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 18-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8860IDRCT | 16-bit resolution, 1MSPS, SPI interface, 2.5V supply; no DGC; lower SNR (92.5dB) and higher power (4.5mW). | Lacks 18-bit depth and DGC; suited for cost-sensitive, higher-speed but lower-accuracy applications. | Select when 16-bit resolution suffices and sampling rate >250ksps is required; verify front-end driver compatibility without DGC. |
| AD7606C-18BSTZ | 18-bit, 1MSPS, parallel + SPI interface, ±10V bipolar input, integrated reference; higher power (120mW), larger LQFP package. | Supports true bipolar ±10V inputs without external level-shifting; targets multi-channel simultaneous-sampling systems. | Choose for multi-channel synchronized acquisition with built-in reference and oversampling capability; avoid if board space or power budget is constrained. |
Compared with ADS8860IDRCT and AD7606C-18BSTZ, the LTC2376HMS-18#PBF uniquely balances 18-bit precision, ultra-low power (3.4mW), DGC-enabled single-supply drive, and compact MSOP packaging - making it optimal for thermally demanding, space-limited, high-fidelity single-channel measurement nodes.
Availability
LTC2376HMS-18#PBF is available at Aetrix Electronics and suitable for medical imaging signal chains, high-speed industrial data acquisition, and portable precision instrumentation requiring stable component supply across extended temperature ranges.
Supply support for LTC2376HMS-18#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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC2376-18 family was designed by Linear Technology (acquired by ADI in 2017) to deliver metrology-grade 18-bit SAR ADC performance with ultra-low power and flexible interface options for demanding embedded measurement applications.
FAQ
What is the maximum operating temperature rating for the LTC2376HMS-18#PBF?
The LTC2376HMS-18#PBF is rated for continuous operation from –40°C to +125°C ambient temperature. This H-grade qualification is verified per datasheet specifications, including guaranteed ±1.75LSB INL max and ≥98dB SNR across the full range - critical for under-hood automotive or industrial control cabinet deployments where thermal margins are tight.
Does the LTC2376HMS-18#PBF require an external clock source for conversion timing?
No, the LTC2376HMS-18#PBF uses an internal oscillator to set conversion time, eliminating the need for an external clock source. This simplifies system design by removing timing synchronization complexity and reducing component count - especially valuable in compact or noise-sensitive layouts where clock routing introduces coupling risks.
How does Digital Gain Compression (DGC) function in the LTC2376HMS-18#PBF?
In the LTC2376HMS-18#PBF, DGC is enabled by grounding the REF/DGC pin (Pin 8), which digitally remaps the full-scale input range from ±VREF to 0.1×VREF–0.9×VREF. For a 5V reference, this yields a 0.5V–4.5V usable input span - allowing single-supply amplifiers like the LT6350 to drive the ADC without negative rails while preserving all 18 bits of resolution and monotonicity.
What package type and lead finish does the LTC2376HMS-18#PBF use?
The LTC2376HMS-18#PBF uses a 16-lead plastic MSOP package (5mm × 4.4mm body, 0.65mm pitch) with lead-free (Pb-free) matte tin finish. It is not a DFN variant - the "HMS" suffix explicitly denotes the high-temperature MSOP package, distinct from the DFN "HDE" variants which feature an exposed thermal pad.
Can the LTC2376HMS-18#PBF be daisy-chained with other ADCs?
Yes, the LTC2376HMS-18#PBF supports daisy-chain mode via the CHAIN pin (Pin 1). When pulled high, RDL/SDI becomes a serial data input, allowing multiple LTC2376HMS-18#PBF devices to share a single SPI bus - reducing GPIO usage and simplifying firmware for multi-channel synchronous sampling systems without requiring additional CS lines.
LTC2376HMS-18#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TFSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 18
- Sampling Rate (Per Second):
- 250k
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- SPI
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 2.375V ~ 2.625V
- Voltage - Supply, Digital:
- 2.375V ~ 2.625V
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 16-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2376HMS-18#PBF FAQ
1.How can I place an order for LTC2376HMS-18#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2376HMS-18#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 LTC2376HMS-18#PBF reliable?
The price and inventory of LTC2376HMS-18#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2376HMS-18#PBF is usually 5 days.
3.What payment methods are accepted for LTC2376HMS-18#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2376HMS-18#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2376HMS-18#PBF?
LTC2376HMS-18#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2376HMS-18#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 LTC2376HMS-18#PBF?
For technical support, including LTC2376HMS-18#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2376HMS-18#PBF requirements.
6.How does Aetrix verify that LTC2376HMS-18#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2376HMS-18#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 LTC2376HMS-18#PBF meets industry standards.
7.What is the process for return or replacement of LTC2376HMS-18#PBF?
All LTC2376HMS-18#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2376HMS-18#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 LTC2376HMS-18#PBF part is unused and in its original packaging.
Return procedure for LTC2376HMS-18#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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