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Analog Devices Inc. LTC2376CMS-18#TRPBF
- Part No.:
- LTC2376CMS-18#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TFSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC2376CMS-18#TRPBF.pdf
- Description:
- IC ADC 18BIT SAR 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,285
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Product details
Overview
LTC2376CMS-18#TRPBF 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, fully differential ±VREF input (2.5V–5.1V), and 3.4mW power consumption at full throughput. It operates from a single 2.5V analog supply and supports 1.8V–5V I/O logic, serving high-precision data acquisition in medical imaging and portable instrumentation.
For engineers reviewing the LTC2376CMS-18#TRPBF datasheet, LTC2376CMS-18#TRPBF pinout, LTC2376CMS-18#TRPBF application, or LTC2376CMS-18#TRPBF equivalent, key selection criteria include guaranteed 18-bit no-missing-codes performance, digital gain compression (DGC) for single-supply amplifier interfacing, internal conversion clock, daisy-chain SPI interface, and operation up to 70°C in MSOP-16 package.
Technical Context
The LTC2376CMS-18#TRPBF implements a charge-redistribution SAR architecture with a fully differential sampling switch network and 18-bit CDAC. Its conversion timing is governed by an internal oscillator (no external clock required), delivering fixed 1.9–3µs conversion time and zero cycle latency.
It features dual-domain power supplies: 2.5V VDD for analog core and programmable OVDD (1.71–5.25V) for digital I/O, enabling interoperability with mixed-voltage host systems. The REF/DGC pin selects between standard ±VREF input range or DGC mode (0.1×VREF to 0.9×VREF), eliminating need for negative supply in front-end amplifiers.
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 - enables real-time capture of signals up to 125kHz Nyquist bandwidth without pipeline delay. |
| SNR | 102dB at fIN = 2kHz, VREF = 5V - supports >16.5 effective number of bits (ENOB) in precision measurement. |
| INL | ±1.75LSB max - ensures monotonicity and linearity critical for closed-loop control and calibration systems. |
| Power Consumption | 3.4mW at 250ksps, 3.4µW at 250sps - ultra-low dynamic power scaling enables battery-powered portable designs. |
| Digital Interface | SPI-compatible with daisy-chain mode - allows multi-ADC synchronization using single SCK/SDO bus, reducing PCB routing complexity. |
| Input Range | Fully differential ±VREF, VREF = 2.5V to 5.1V - supports flexible signal conditioning with wide common-mode tolerance (VCM = VREF/2 ± 0.1V). |
Pinout & Package
Package: 16-lead plastic MSOP (3mm × 4.9mm), lead-free, RoHS-compliant, operating temperature range 0°C to 70°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN+, IN– | Differential analog inputs | Accept ±VREF fully differential signal; input capacitance 45pF in sample mode; requires low-impedance drive for <3.46µs settling. |
| REF | Reference voltage input | Defines full-scale range; accepts 2.5V–5.1V; must be decoupled with 47µF X5R ceramic capacitor near pin. |
| REF/DGC | Reference/Digital Gain Compression control | Tied to GND enables DGC mode (0.5V–4.5V input swing with 5V reference); tied to REF disables DGC for standard ±VREF range. |
| CNV | Convert trigger input | Rising edge initiates conversion and powers up ADC; asynchronous, compatible with 2.5V logic. |
| BUSY | Conversion status indicator | Active-high open-drain output signals conversion in progress; used for timing handshaking or interrupt generation. |
| RDL/SDI | Read/Serial Data Input | In normal mode (CHAIN = low): bus enable control; in chain mode (CHAIN = high): serial data input for daisy-chaining. |
| SDO | Serial Data Output | 2's complement 18-bit result shifted MSB-first on SCK rising edges; tri-state when RDL = low. |
| SCK | Serial clock input | Supports up to 100MHz clock rate; defines timing for data transfer; logic levels referenced to OVDD. |
| CHAIN | Daisy-chain mode selector | High enables chain mode for multi-device SPI cascading; low configures standalone operation with RDL function. |
| VDD | Analog supply | 2.375V–2.625V, 2.5V nominal; bypassed with 10µF ceramic capacitor to GND for noise suppression. |
| OVDD | Digital I/O supply | 1.71V–5.25V; sets logic threshold for all digital pins; bypassed with 0.1µF capacitor to GND. |
| GND (Pins 3, 6, 10, 16) | Analog/digital ground | Four dedicated ground pins minimize ground bounce; exposed pad not present in MSOP package. |
Key Features
| Feature | Design Value |
|---|---|
| Digital Gain Compression (DGC) | Enables single-supply (e.g., +5.5V) operation of driving amplifiers by mapping full-scale input to 0.1×VREF–0.9×VREF, preserving 18-bit resolution without negative rail. |
| No cycle latency & internal clock | Eliminates external timing circuitry; conversion starts immediately on CNV edge and completes in fixed 1.9–3µs, simplifying system-level synchronization. |
| Ultra-low power scaling | Auto power-down between conversions reduces current to 0.9µA typical; power dissipation scales linearly from 3.4mW (250ksps) to 3.4µW (250sps). |
| Wide input voltage flexibility | Supports VREF from 2.5V to 5.1V and OVDD from 1.71V to 5.25V, enabling interoperability with diverse sensor signal chains and host processors. |
| Guaranteed operation to 70°C | Specified over full industrial temperature range (0°C to 70°C) with validated INL, SNR, THD, and timing parameters - suitable for embedded instrumentation. |
Applications
| Medical Imaging Signal Chain | Portable High-Speed Data Logger |
|---|---|
|
Use Scenario: Digitizing low-noise, wide-dynamic-range signals from ultrasound transducer arrays or MRI gradient monitoring circuits. IC Role / Device Role / Timing Role: Primary high-resolution ADC capturing baseband analog waveforms at 250ksps with minimal added noise (102dB SNR) and distortion (–126dB THD). Use Value: Enables detection of subtle tissue contrast or motion artifacts via 18-bit fidelity and sub-1.75LSB INL, directly improving diagnostic confidence. |
Use Scenario: Battery-powered field instrument recording vibration, acoustic emission, or environmental sensor outputs over extended periods. IC Role / Device Role / Timing Role: Low-power SAR ADC performing continuous sampling with automatic power-down between conversions to extend battery life. Use Value: Achieves 3.4µW standby power at 250sps while maintaining full 18-bit resolution - extends operational runtime without sacrificing measurement integrity. |
| Industrial Process Control Loop | ATE Test Equipment Channel |
|
Use Scenario: Closed-loop feedback acquisition in PLC analog I/O modules requiring precise, monotonic response to actuator commands. IC Role / Device Role / Timing Role: High-linearity ADC providing real-time digitization of 4–20mA loop signals conditioned through differential amplifiers. Use Value: ±1.75LSB INL max and guaranteed no missing codes ensure deterministic control behavior and eliminate step nonlinearity errors in servo positioning. |
Use Scenario: Multi-channel parametric test head acquiring device-under-test (DUT) analog responses with synchronized timing and channel density. IC Role / Device Role / Timing Role: SPI-configurable ADC supporting daisy-chain mode for compact, scalable channel expansion without additional CS lines. Use Value: Reduces PCB area and interconnect count by enabling up to 8+ devices on one SPI bus while maintaining 250ksps per channel throughput. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-resolution SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8860IDRCT | 16-bit, 1MSPS, 2.5V supply, no DGC, SPI-only interface, 100dB SNR | Higher speed but lower resolution and no digital gain compression; requires dual-supply op-amps for full-scale differential input | Select when >250ksps sampling is required and 16-bit resolution suffices; verify front-end amplifier compatibility without DGC. |
| AD7606C-18BSTZ | 18-bit, 1MSPS, ±5V analog input, parallel + SPI interface, 105dB SNR, integrated analog front-end | Higher throughput and built-in PGA/buffering but larger footprint (64-lead LQFP), higher power (45mW), no DGC | Choose for multi-channel simultaneous sampling or when analog signal conditioning is needed on-chip; not drop-in due to pinout and supply differences. |
Compared with ADS8860IDRCT and AD7606C-18BSTZ, the LTC2376CMS-18#TRPBF uniquely balances 18-bit precision, ultra-low 3.4mW power, and DGC-enabled single-supply front-end design - making it optimal for space-constrained, battery-sensitive, or amplifier-simplified systems where 250ksps meets application bandwidth needs.
Availability
LTC2376CMS-18#TRPBF is available at Aetrix Electronics and suitable for medical imaging signal chains, portable high-speed data loggers, and industrial process control loops requiring stable component supply, long-term manufacturability, and guaranteed 0°C to 70°C performance.
Supply support for LTC2376CMS-18#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, acquired Linear Technology in 2017 to strengthen its precision converter portfolio.
The LTC2376-18 belongs to ADI's precision SAR ADC product line, designed specifically for applications demanding ultra-low noise, low power, and high DC/AC accuracy - including portable instrumentation, medical diagnostics, and industrial automation.
FAQ
What is the maximum sampling rate of the LTC2376CMS-18#TRPBF?
The LTC2376CMS-18#TRPBF achieves a maximum sampling rate of 250ksps with no pipeline delay or cycle latency. This is enabled by its internal conversion clock and charge-redistribution SAR architecture, allowing deterministic timing for real-time signal capture up to 125kHz Nyquist bandwidth. The specification is guaranteed over the full 0°C to 70°C operating range.
Does the LTC2376CMS-18#TRPBF support daisy-chain configuration?
Yes, the LTC2376CMS-18#TRPBF supports daisy-chain mode via the CHAIN pin (Pin 1). When CHAIN is high, the RDL/SDI pin functions as serial data input, allowing multiple LTC2376CMS-18#TRPBF devices to share a single SPI bus. This eliminates the need for individual chip select lines and simplifies multi-channel system layout while maintaining 250ksps throughput per device.
How does Digital Gain Compression (DGC) work in the LTC2376CMS-18#TRPBF?
In the LTC2376CMS-18#TRPBF, DGC is activated by grounding the REF/DGC pin (Pin 8). This remaps the full-scale input range from ±VREF to 0.1×VREF–0.9×VREF (e.g., 0.5V–4.5V with 5V reference), enabling single-supply operation of driving amplifiers like the LT6350 from +5.5V. The ADC preserves full 18-bit resolution via internal digital scaling, eliminating need for negative rails without degrading ENOB.
What are the power supply requirements for the LTC2376CMS-18#TRPBF?
The LTC2376CMS-18#TRPBF requires two independent supplies: VDD (2.375V–2.625V, typically 2.5V) for the analog core, and OVDD (1.71V–5.25V) for digital I/O. VDD must be bypassed with a 10µF ceramic capacitor, and REF requires a 47µF X5R capacitor. Total power is 3.4mW at 250ksps, dropping to 3.4µW at 250sps via automatic power-down.
Is the LTC2376CMS-18#TRPBF pin-compatible with other members of the LTC2376 family?
Yes, the LTC2376CMS-18#TRPBF shares identical MSOP-16 pinout and functionality with all LTC2376x-18 variants (e.g., LTC2376IMS-18#TRPBF, LTC2376HMS-18#TRPBF), differing only in temperature grade and part marking. Electrical specifications including timing, INL, SNR, and interface behavior are consistent across grades - allowing direct substitution in existing designs when ambient temperature requirements align.
LTC2376CMS-18#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TFSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 0°C ~ 70°C
- Supplier Device Package:
- 16-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2376CMS-18#TRPBF FAQ
1.How can I place an order for LTC2376CMS-18#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2376CMS-18#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 LTC2376CMS-18#TRPBF reliable?
The price and inventory of LTC2376CMS-18#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2376CMS-18#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2376CMS-18#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2376CMS-18#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2376CMS-18#TRPBF?
LTC2376CMS-18#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2376CMS-18#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 LTC2376CMS-18#TRPBF?
For technical support, including LTC2376CMS-18#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2376CMS-18#TRPBF requirements.
6.How does Aetrix verify that LTC2376CMS-18#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2376CMS-18#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 LTC2376CMS-18#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2376CMS-18#TRPBF?
All LTC2376CMS-18#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2376CMS-18#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 LTC2376CMS-18#TRPBF part is unused and in its original packaging.
Return procedure for LTC2376CMS-18#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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