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Analog Devices Inc. LTC2378CMS-16#TRPBF
- Part No.:
- LTC2378CMS-16#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TFSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC2378CMS-16#TRPBF.pdf
- Description:
- IC ADC 16BIT SAR 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,108
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Product details
Overview
LTC2378CMS-16#TRPBF from Analog Devices (formerly Linear Technology) is a 16-bit, 1 Msps successive approximation register (SAR) analog-to-digital converter with ±0.5 LSB INL max, 97 dB SNR at 2 kHz, and fully differential ±VREF input range (2.5 V to 5.1 V). It operates from a 2.5 V supply, consumes 13.5 mW at full speed, and supports digital gain compression (DGC) for single-supply amplifier interfacing - used in high-speed data acquisition systems requiring precision, low power, and wide dynamic range.
For engineers reviewing the LTC2378CMS-16#TRPBF datasheet, LTC2378CMS-16#TRPBF pinout, LTC2378CMS-16#TRPBF application, or LTC2378CMS-16#TRPBF equivalent, key selection criteria include guaranteed 16-bit no-missing-codes operation, internal conversion clock, SPI-compatible daisy-chain interface, 1.8 V–5 V I/O compatibility, and operation up to 125°C in H-grade variants - all validated for medical imaging, ATE, and portable instrumentation.
Technical Context
The LTC2378CMS-16#TRPBF implements a charge-redistribution SAR architecture with a 16-bit CDAC and differential comparator, sampling the IN+/IN– inputs during acquisition and performing binary-weighted voltage comparisons against VREF during conversion. Its internal oscillator eliminates external clock dependency, and auto power-down between conversions scales current draw with sample rate - 13.5 µW at 1 kSPS.
Digital gain compression (DGC) is controlled via the REF/DGC pin: when grounded, it remaps zero-scale from 0 V to 0.1·VREF and full-scale from VREF to 0.9·VREF, enabling rail-to-rail input swing (e.g., 0.5 V–4.5 V at 5 V reference) without negative supply for driving amplifiers. The device supports both normal and daisy-chain SPI modes via the CHAIN pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 65,536 discrete output codes with guaranteed no missing codes across temperature. |
| Sampling Rate | 1 Msps - enables real-time capture of signals up to 500 kHz Nyquist bandwidth with no pipeline latency. |
| SNR | 97 dB (typ, fIN = 2 kHz, VREF = 5 V) - supports >15.8 effective bits for high-fidelity signal digitization. |
| INL | ±0.5 LSB (max) - ensures monotonicity and accurate end-point linearity critical for closed-loop control. |
| Power Dissipation | 13.5 mW at 1 Msps - enables thermally constrained designs such as handheld test equipment and battery-powered sensors. |
| Input Range | ±VREF, VREF = 2.5 V to 5.1 V - allows flexible signal scaling while maintaining full 16-bit resolution. |
| Digital Interface | SPI-compatible with daisy-chain mode - simplifies multi-channel synchronization without additional timing logic. |
Pinout & Package
Package: 16-lead MSOP (5.0 mm × 4.4 mm), RoHS-compliant, lead-free finish. Exposed pad not present in MSOP variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN+, IN– | Differential analog input pair | Accepts fully differential signal with ±VREF range; 45 pF input capacitance requires low-Z drive for settling. |
| REF | Reference voltage input | Defines full-scale range; decoupled with 47 µF X5R ceramic capacitor for noise immunity. |
| REF/DGC | Reference/Digital Gain Compression control | Ground to enable DGC (0.1–0.9×VREF mapping); tie to REF to disable and retain full ±VREF range. |
| CNV | Convert trigger input | Rising edge initiates conversion and powers up ADC; asynchronous, no setup/hold required. |
| BUSY | Conversion status indicator | High during conversion; used for timing handshaking or interrupt generation in microcontroller systems. |
| SDO, SCK, RDL/SDI | SPI serial data interface | 2's complement output, MSB-first; supports 1.8 V–5 V logic levels and daisy-chain mode via CHAIN pin. |
| VDD, OVDD | Analog and digital I/O supplies | VDD = 2.375–2.625 V (2.5 V nominal); OVDD = 1.71–5.25 V - enables mixed-voltage host interfacing. |
| GND (Pins 3,6,10,16) | Analog/digital ground reference | Four dedicated GND pins minimize ground bounce; require low-inductance PCB connection to common ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Digital Gain Compression (DGC) | Enables single-supply amplifier operation by compressing input range to 10–90% of ±VREF, preserving full 16-bit resolution without negative rail. |
| No cycle latency | Delivers first valid conversion result within one sample period - essential for deterministic real-time control loops. |
| Internal conversion clock | Removes need for external timing circuitry; simplifies layout and improves jitter immunity versus external clock sources. |
| Auto power-down | Reduces current to 0.9 µA (typ) between conversions - cuts average power by >99% at low duty-cycle sampling. |
| Guaranteed operation to 125°C | Validated performance over full industrial/harsh-environment range - supports H-grade variants (LTC2378HMS-16). |
Applications
| Medical Imaging Signal Chain | Automated Test Equipment (ATE) |
|---|---|
|
Use Scenario: Digitizing CT/MRI front-end sensor outputs with high SNR and minimal harmonic distortion. IC Role / Device Role / Timing Role: Primary high-speed, high-accuracy ADC capturing analog detector signals at up to 1 Msps with bipolar ±5 V input range. Use Value: 97 dB SNR and –122 dB THD ensure faithful reproduction of low-amplitude physiological waveforms without spectral contamination. |
Use Scenario: High-throughput parametric testing of ICs requiring precise voltage/current measurement at production speeds. IC Role / Device Role / Timing Role: Precision digitizer in source-measure unit (SMU) channel, synchronized across multiple units via daisy-chain SPI. Use Value: Guaranteed 16-bit no-missing-codes and ±0.5 LSB INL enable pass/fail decisions at sub-LSB thresholds with statistical confidence. |
| Portable Spectrum Analyzer Front-End | Industrial Process Monitoring |
|
Use Scenario: Battery-powered handheld analyzer capturing RF baseband I/Q signals up to 500 kHz bandwidth. IC Role / Device Role / Timing Role: Low-power SAR ADC in direct-conversion receiver path, powered from 2.5 V rail with DGC enabled for single-supply op-amp drive. Use Value: 13.5 mW consumption and auto power-down extend runtime; 34 MHz input bandwidth supports wide IF signal capture. |
Use Scenario: Continuous monitoring of pressure, temperature, and vibration transducers in factory automation PLC modules. IC Role / Device Role / Timing Role: Isolated analog input channel ADC interfaced to isolated SPI bus, operating reliably from –40°C to 85°C. Use Value: Robust 125°C-rated H-grade option and 86 dB CMRR suppress common-mode noise from motor drives and switching power supplies. |
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 |
|---|---|---|---|
| AD7960BCPZ | 18-bit, 5 Msps, 2.5 V supply, but requires external reference and separate VDRIVE supply for driver amp; no DGC function. | Higher resolution/speed trade-off; lacks integrated DGC, increasing BOM count and design complexity for single-supply drivers. | Select when >16-bit resolution is mandatory and system can accommodate dual-supply driver design. |
| ADS8860IDRCT | 16-bit, 1 Msps, 2.5 V supply, SPI interface, but only 92.5 dB SNR (typ), no DGC, and limited to 85°C operation. | Lower SNR limits dynamic range in noise-sensitive applications; no DGC increases risk of amplifier headroom violation. | Select for cost-sensitive, non-harsh-environment applications where 92.5 dB SNR suffices and thermal margin is adequate. |
Compared with AD7960BCPZ and ADS8860IDRCT, the LTC2378CMS-16#TRPBF uniquely combines 97 dB SNR, DGC-enabled single-supply drive, and guaranteed 125°C operation - delivering higher usable dynamic range per watt in thermally constrained, high-reliability systems.
Availability
LTC2378CMS-16#TRPBF is available at Aetrix Electronics and suitable for medical imaging signal chains, automated test equipment (ATE), and portable instrumentation requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LTC2378CMS-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 LTC2378-16 belongs to ADI's precision SAR ADC product line, engineered for applications demanding high speed, low power, and exceptional DC/AC accuracy - especially where thermal robustness and simplified analog front-end design are critical.
FAQ
What is the maximum operating temperature for the LTC2378CMS-16#TRPBF?
The LTC2378CMS-16#TRPBF is rated for 0°C to 70°C operation per its C-grade designation. For extended temperature ranges, the LTC2378IMS-16#TRPBF (–40°C to 85°C) and LTC2378HMS-16#TRPBF (–40°C to 125°C) variants are available. All share identical electrical specifications and pinout, differing only in temperature screening and qualification testing - the LTC2378CMS-16#TRPBF itself does not support operation beyond 70°C.
Does the LTC2378CMS-16#TRPBF require an external clock source?
No, the LTC2378CMS-16#TRPBF integrates an internal oscillator that sets the conversion time, eliminating the need for an external clock. This simplifies system timing design and reduces jitter sensitivity. The CNV input remains the sole trigger for conversion initiation, and the BUSY signal provides asynchronous completion indication - the LTC2378CMS-16#TRPBF operates fully autonomously once powered and configured.
How does Digital Gain Compression (DGC) affect the input voltage range of the LTC2378CMS-16#TRPBF?
When DGC is enabled (REF/DGC pin tied to GND), the LTC2378CMS-16#TRPBF maps zero-scale code to 0.1·VREF and full-scale code to 0.9·VREF, compressing the effective input range to 0.1–0.9×VREF for each polarity. With a 5 V reference, this yields a usable input span of 0.5 V to 4.5 V - providing 0.5 V headroom on both rails to allow single-supply amplifier operation without negative voltage rails, while retaining full 16-bit resolution.
Can the LTC2378CMS-16#TRPBF interface directly with a 1.8 V microcontroller SPI port?
Yes, the LTC2378CMS-16#TRPBF supports 1.8 V logic levels via its OVDD supply pin. When OVDD is set to 1.8 V, all digital I/O pins (SDO, SCK, RDL/SDI, CHAIN, CNV, BUSY) operate at 1.8 V compatible voltage thresholds (VIH = 0.8×OVDD, VIL = 0.2×OVDD), enabling direct connection to 1.8 V microcontrollers without level shifters - the LTC2378CMS-16#TRPBF maintains full timing compliance and signal integrity at this interface voltage.
Is the LTC2378CMS-16#TRPBF pin-compatible with other members of the LTC2378 family?
Yes, all LTC2378-16 variants - including LTC2378CMS-16#TRPBF, LTC2378IMS-16#TRPBF, and LTC2378HMS-16#TRPBF - share identical 16-lead MSOP pinout, electrical interface, and functional behavior. Differences are limited to temperature grade, screening, and part marking; PCB layouts designed for the LTC2378CMS-16#TRPBF are fully reusable for higher-grade versions without modification.
LTC2378CMS-16#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:
- 16
- Sampling Rate (Per Second):
- 1M
- 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:
- -
LTC2378CMS-16#TRPBF FAQ
1.How can I place an order for LTC2378CMS-16#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2378CMS-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 LTC2378CMS-16#TRPBF reliable?
The price and inventory of LTC2378CMS-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 LTC2378CMS-16#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2378CMS-16#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2378CMS-16#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2378CMS-16#TRPBF?
LTC2378CMS-16#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2378CMS-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 LTC2378CMS-16#TRPBF?
For technical support, including LTC2378CMS-16#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2378CMS-16#TRPBF requirements.
6.How does Aetrix verify that LTC2378CMS-16#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2378CMS-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 LTC2378CMS-16#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2378CMS-16#TRPBF?
All LTC2378CMS-16#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2378CMS-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 LTC2378CMS-16#TRPBF part is unused and in its original packaging.
Return procedure for LTC2378CMS-16#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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