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Analog Devices Inc. LTC2382CMS-16#PBF
- Part No.:
- LTC2382CMS-16#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TFSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC2382CMS-16#PBF.pdf
- Description:
- IC ADC 16BIT SAR 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,356
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Product details
Overview
LTC2382CMS-16#PBF from Analog Devices (formerly Linear Technology) is a 16-bit, 500 ksps successive approximation register (SAR) analog-to-digital converter with fully differential ±2.5 V input range, 92 dB SNR at 20 kHz, ±2 LSB INL max, and 6.5 mW power consumption at full throughput. It operates from a single 2.5 V supply (VDD), supports 1.8 V–5 V I/O logic (OVDD), and targets high-speed precision data acquisition in compact, low-power systems.
For engineers reviewing the LTC2382CMS-16#PBF datasheet, LTC2382CMS-16#PBF pinout, LTC2382CMS-16#PBF application, or LTC2382CMS-16#PBF equivalent, key selection considerations include guaranteed 16-bit no-missing-codes operation, extended 1.25 µs acquisition time enabling ultra-low-power driver usage, daisy-chain SPI interface compatibility, internal conversion clock, and operation up to 70°C in the MSOP-16 package.
Technical Context
The LTC2382CMS-16#PBF implements a proprietary sampling architecture that allows acquisition of the next sample during the current conversion cycle, eliminating pipeline delay and achieving zero cycle latency. Its internal oscillator governs conversion timing, removing external clock dependencies and simplifying system synchronization.
It features a high-impedance, fully differential analog front-end with 45 pF input capacitance in sample mode and 5 pF in hold mode, coupled with 40 Ω switch on-resistance. The 2's complement serial output is SPI-compatible and supports both normal bus-enable mode (via RDL/SDI) and daisy-chain mode (via CHAIN pin high), with SDO active only when enabled.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - guarantees monotonic transfer function and full 65,536-code dynamic range without missing codes. |
| Sampling Rate | 500 ksps - enables real-time capture of signals up to 250 kHz Nyquist bandwidth with no throughput penalty. |
| SNR | 92 dB (typ, fIN = 20 kHz) - supports >15-bit effective resolution for high-fidelity signal digitization. |
| INL | ±2 LSB (max) - ensures accurate amplitude linearity across full input range, critical for calibration-sensitive applications. |
| Power Dissipation | 6.5 mW at 500 ksps - enables battery-powered or thermally constrained designs without forced cooling. |
| Acquisition Time | 1.25 µs - permits use of low-power, low-bandwidth ADC drivers (e.g., LT6350), reducing system BOM cost and power. |
| Reference Input | External 2.5 V (2.4 V–2.6 V) - decoupled via 47 µF X5R ceramic capacitor; supports precision scaling and temperature-stable full-scale definition. |
| Operating Temperature | 0°C to 70°C - validated performance across commercial temperature range with no derating required. |
Pinout & Package
Package: 16-lead plastic MSOP (4 mm × 5 mm), exposed pad not present (MSOP variant). Pin 17 ground pad applies only to DFN package; this part uses MSOP.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CHAIN (1) | Mode control input | Low = Normal mode (RDL/SDI = bus enable); High = Daisy-chain mode (RDL/SDI = serial data input). |
| VDD (2) | Digital core supply | 2.5 V ±5% supply for internal logic and SAR core; requires 10 µF ceramic bypass to GND. |
| GND (3,6,10,16) | Analog/digital ground | Four dedicated ground pins minimize ground bounce and improve PSRR; must be connected to common low-impedance ground plane. |
| IN+, IN– (4,5) | Differential analog inputs | Accept ±2.5 V fully differential input; 45 pF sample-mode capacitance demands low-impedance drive or buffered interface. |
| REF (7,8) | Reference voltage input | 2.4 V–2.6 V external reference; draws up to 495 µA at 500 ksps; requires 47 µF X5R ceramic capacitor directly at pin. |
| CNV (9) | Convert trigger input | Rising-edge initiated conversion; auto power-down occurs while CNV remains high, reducing idle power. |
| BUSY (11) | Conversion status indicator | Active-high open-drain output signaling conversion in progress; used for timing handshaking or interrupt generation. |
| RDL/SDI (12) | Serial interface control/data input | In Normal mode: controls SDO tri-state; in Chain mode: accepts serial data from upstream ADC in daisy chain. |
| SCK (13) | Serial clock input | Accepts up to 100 MHz clock (10 ns period); rising edge clocks out MSB-first 2's complement data on SDO. |
| SDO (14) | Serial data output | Tri-state output enabled by RDL/SDI low (Normal) or automatically in Chain mode; outputs conversion result or daisy-chain data. |
| OVDD (15) | I/O interface supply | 1.71 V–5.25 V logic supply; sets VIH/VIL thresholds and drives SDO/SCK/RDL levels; bypass with 0.1 µF ceramic capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay / zero cycle latency | Enables deterministic real-time sampling for closed-loop control and burst-mode acquisition without output buffering. |
| Extended 1.25 µs acquisition window | Reduces required driver bandwidth and slew rate, allowing use of lower-power, lower-cost op-amps like LT6350. |
| Internal conversion clock | Eliminates need for external timing circuitry or master clock distribution, simplifying PCB layout and reducing jitter sensitivity. |
| Auto power-down between conversions | Reduces average power proportionally to sampling rate-e.g., drops to 13 µW at 1 ksps-ideal for intermittent sensing. |
| SPI-compatible daisy-chain mode | Supports multi-ADC synchronization with single SCK and CNV lines, minimizing microcontroller GPIO and routing complexity. |
| Guaranteed operation to 125°C (H-grade variants) | While LTC2382CMS-16#PBF is rated 0°C–70°C, same-pinout H-grade version (LTC2382HMS-16#PBF) enables drop-in thermal upgrade. |
Applications
| Medical Imaging Signal Chain | Industrial Process Monitoring |
|---|---|
|
Use Scenario: Digitizing low-noise, wide-dynamic-range sensor outputs (e.g., CT detector arrays, ultrasound beamformers) requiring high SNR and linearity. IC Role / Device Role / Timing Role: Primary high-speed precision ADC capturing analog front-end signals with minimal added noise or distortion. Use Value: 92 dB SNR and ±2 LSB INL ensure accurate representation of weak physiological signals amid strong background interference. |
Use Scenario: Real-time monitoring of pressure, temperature, and flow sensors in PLC-based factory automation systems. IC Role / Device Role / Timing Role: High-throughput SAR ADC interfacing with isolated analog conditioners and microcontroller-based control units. Use Value: 500 ksps throughput with zero latency enables sub-millisecond loop response times for fast-acting industrial actuators. |
| Portable Test Equipment | Battery-Powered Data Loggers |
|
Use Scenario: Handheld oscilloscopes, spectrum analyzers, and multimeters needing high resolution and low power in compact form factors. IC Role / Device Role / Timing Role: Core ADC in mixed-signal SoC or discrete signal path, operating from single Li-ion cell (via LDO or buck-boost). Use Value: 6.5 mW at full speed and 13 µW at 1 ksps extends battery life while maintaining 16-bit fidelity for field diagnostics. |
Use Scenario: Remote environmental sensors logging temperature, humidity, and gas concentration over weeks on coin-cell batteries. IC Role / Device Role / Timing Role: Low-duty-cycle ADC activated by timer or event trigger, spending >99.9% time in auto power-down state. Use Value: Extended acquisition time reduces driver power, and internal clock eliminates external crystal, shrinking BOM and footprint. |
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-RL7 | 18-bit, 5 MSPS, 2.5 V supply, ±2.5 V input, but requires external reference and separate VIO supply; higher power (34 mW). | Targets higher-resolution, higher-throughput applications where SNR > 95 dB and speed > 1 MSPS are mandatory. | Select AD7960BCPZ-RL7 only when 18-bit resolution and 5 MSPS are required; LTC2382CMS-16#PBF offers better power efficiency and simpler supply scheme. |
| LTC2378IMS-18#PBF | 18-bit, 1 MSPS, same MSOP-16 package, 2.5 V supply, ±2.5 V input, 95.5 dB SNR, but consumes 15 mW at full speed. | Designed for applications needing higher resolution than 16 bits without sacrificing DC accuracy or THD performance. | Choose LTC2378IMS-18#PBF when 18-bit resolution is essential; LTC2382CMS-16#PBF provides optimal balance of speed, power, and cost for 16-bit systems. |
Compared with AD7960BCPZ-RL7 and LTC2378IMS-18#PBF, the LTC2382CMS-16#PBF delivers best-in-class 500 ksps throughput per milliwatt (77 ksps/mW), simplified dual-supply architecture (VDD + OVDD only), and proven robustness in thermally constrained portable instrumentation.
Availability
LTC2382CMS-16#PBF is available at Aetrix Electronics and suitable for medical imaging signal chains, industrial process monitoring, and portable test equipment requiring stable component supply, long-term manufacturability, and consistent parametric performance across production lots.
Supply support for LTC2382CMS-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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing ICs, serving industrial, automotive, communications, and healthcare markets.
The LTC2382-16 belongs to Linear's precision SAR ADC product line, engineered for applications demanding high speed, low power, and exceptional AC/DC accuracy without pipeline artifacts or latency penalties.
FAQ
What is the maximum sampling rate supported by the LTC2382CMS-16#PBF?
The LTC2382CMS-16#PBF supports a guaranteed maximum sampling rate of 500 ksps across its full operating temperature range (0°C to 70°C). This rate is maintained with full 16-bit accuracy, ±2 LSB INL, and 92 dB SNR at 20 kHz input frequency. The internal oscillator ensures consistent timing without external clock dependency, and the device exhibits no cycle latency-even at maximum throughput.
Does the LTC2382CMS-16#PBF require an external reference, and what are the requirements?
Yes, the LTC2382CMS-16#PBF requires an external precision reference applied to its REF pins (7 and 8). The specified range is 2.4 V to 2.6 V, with typical operation at 2.5 V. It draws up to 495 µA DC load at 500 ksps, necessitating a low-noise, low-drift reference such as the LTC6652-2.5, decoupled with a 47 µF X5R ceramic capacitor placed directly at the REF pin.
How does the daisy-chain mode work on the LTC2382CMS-16#PBF?
Daisy-chain mode is enabled by driving the CHAIN pin (1) high. In this mode, the RDL/SDI pin (12) becomes a serial data input, accepting data from the SDO of a preceding ADC in the chain. The LTC2382CMS-16#PBF then shifts its own conversion result out on SDO (14) on subsequent SCK edges, enabling synchronized multi-ADC readout using a single SCK and CNV line-reducing controller resource usage and PCB routing complexity.
What is the significance of the 1.25 µs extended acquisition time in the LTC2382CMS-16#PBF?
The 1.25 µs extended acquisition time allows the LTC2382CMS-16#PBF to settle the sampled input with relaxed driver bandwidth and slew rate requirements. This enables use of lower-power, lower-cost op-amps (e.g., LT6350) instead of high-speed, high-current alternatives-reducing total system power, heat, and cost while preserving SNR and THD performance.
Is the LTC2382CMS-16#PBF pin-compatible with other members of the LTC2382 family?
Yes, the LTC2382CMS-16#PBF shares identical MSOP-16 pinout and footprint with all LTC2382-x variants (e.g., LTC2382IMS-16#PBF, LTC2382HMS-16#PBF), differing only in temperature grade and part marking. This allows direct hardware reuse across commercial, industrial, and high-temp designs-enabling one PCB layout to support multiple grades via firmware or configuration changes.
LTC2382CMS-16#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:
- 16
- Sampling Rate (Per Second):
- 500k
- 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:
- -
LTC2382CMS-16#PBF FAQ
1.How can I place an order for LTC2382CMS-16#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2382CMS-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 LTC2382CMS-16#PBF reliable?
The price and inventory of LTC2382CMS-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 LTC2382CMS-16#PBF is usually 5 days.
3.What payment methods are accepted for LTC2382CMS-16#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2382CMS-16#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2382CMS-16#PBF?
LTC2382CMS-16#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2382CMS-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 LTC2382CMS-16#PBF?
For technical support, including LTC2382CMS-16#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2382CMS-16#PBF requirements.
6.How does Aetrix verify that LTC2382CMS-16#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2382CMS-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 LTC2382CMS-16#PBF meets industry standards.
7.What is the process for return or replacement of LTC2382CMS-16#PBF?
All LTC2382CMS-16#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2382CMS-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 LTC2382CMS-16#PBF part is unused and in its original packaging.
Return procedure for LTC2382CMS-16#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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