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Analog Devices Inc. LTC2364HMS-18#PBF
- Part No.:
- LTC2364HMS-18#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TFSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC2364HMS-18#PBF.pdf
- Description:
- IC ADC 18BIT SAR 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,040
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Product details
Overview
LTC2364HMS-18#PBF from Analog Devices (formerly Linear Technology) is an 18-bit, 250ksps pseudo-differential unipolar successive approximation register (SAR) ADC operating from a single 2.5V supply. It delivers 97dB SNR (typ), ±2.5LSB INL (max), and guaranteed no missing codes at 18 bits, with VREF support from 2.5V to 5.1V. Designed for high-precision, low-power data acquisition in harsh thermal environments, it serves medical imaging front-ends and industrial process control systems requiring stable performance up to 125°C.
For engineers reviewing the LTC2364HMS-18#PBF datasheet, LTC2364HMS-18#PBF pinout, LTC2364HMS-18#PBF application, or LTC2364HMS-18#PBF equivalent, key selection criteria include its H-grade temperature range (–40°C to 125°C), 3.4mW power consumption at full throughput, SPI-compatible daisy-chain interface, and absence of pipeline delay - all critical for deterministic real-time sampling in embedded instrumentation.
Technical Context
The LTC2364HMS-18#PBF implements a charge-redistribution SAR architecture with internal conversion clock, eliminating external timing dependencies. Its pseudo-differential input stage accepts 0V to VREF on IN+ with IN– referenced to GND (±100mV range), enabling common-mode noise rejection without true differential signaling overhead.
Conversion is initiated by a rising edge on CNV; BUSY asserts high during acquisition and conversion (tCONV ≤ 3µs), then deasserts to signal result readiness. The SPI-compatible serial interface supports 1.8V–5V OVDD logic levels, daisy-chain mode via CHAIN/RDL/SDI, and MSB-first straight-binary output - all fully specified across the –40°C to 125°C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 18-bit - delivers 262,144 distinct output codes with guaranteed no missing codes. |
| Sampling Rate | 250ksps - enables real-time capture of signals up to 125kHz Nyquist bandwidth. |
| SNR | 97dB (typ, fIN = 2kHz, VREF = 5V) - supports >15.8 effective number of bits (ENOB) in clean signal chains. |
| INL | ±2.5LSB (max, full temperature range) - ensures monotonicity and accuracy over –40°C to 125°C. |
| Power Consumption | 3.4mW at 250ksps - enables battery-operated portable instrumentation with minimal thermal load. |
| Reference Range | 2.5V to 5.1V - allows flexible scaling of input dynamic range while maintaining LSB size from 9.5µV to 19.5µV. |
| Operating Temperature | –40°C to 125°C (H-grade) - qualified for under-hood automotive sensors and industrial PLC analog input modules. |
Pinout & Package
Package: 16-lead plastic MSOP (5.0mm × 4.0mm), exposed pad not present (DFN variant has exposed pad; MSOP does not). Pinout validated per LTC2364-18 datasheet Rev. F, Figure "PIN CONFIGURATION" (MS PACKAGE).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CHAIN (1) | Mode selector | High enables daisy-chain mode (RDL/SDI becomes serial data input); low enables normal bus-enable mode. |
| VDD (2) | Analog supply | 2.5V ±62.5mV supply for core ADC; requires 10µF ceramic bypass to GND. |
| GND (3,6,10,16) | Ground reference | Four dedicated ground pins minimize ground bounce and improve PSRR in high-speed operation. |
| IN+ (4) | Analog input (+) | Pseudo-differential input with 0V to VREF range; sees 45pF capacitance and 40Ω switch resistance during acquisition. |
| IN– (5) | Analog ground sense | Common-mode reference pin; must be tied to PCB ground plane or remote ground point (±100mV range). |
| REF (7,8) | Reference input | Dual-pin connection for low-impedance 2.5V–5.1V external reference; requires 47µF X5R ceramic decoupling. |
| CNV (9) | Convert trigger | Rising-edge–sensitive start-of-conversion signal; initiates acquisition and powers up internal circuitry. |
| BUSY (11) | Status indicator | Active-high open-drain output signaling ongoing conversion; tBUSYLH ≤ 13ns (CL = 20pF). |
| RDL/SDI (12) | Serial I/O control / data input | In normal mode: bus enable; in chain mode: serial data input for daisy-chained configurations. |
| SCK (13) | Serial clock | Input clock for SPI interface; supports up to 100MHz (tSCK ≥ 10ns); determines data shift timing. |
| SDO (14) | Serial data output | MSB-first straight-binary output; valid within 9.5ns of SCK↑ (CL = 20pF); compatible with 1.8V–5V OVDD. |
| OVDD (15) | I/O supply | 1.71V–5.25V digital interface supply; sets logic thresholds for all digital pins (VIH/VIL = 0.8/0.2 × OVDD). |
Key Features
| Feature | Design Value |
|---|---|
| No cycle latency | Immediate result availability after BUSY deassertion - eliminates pipeline delay for deterministic timing in closed-loop control. |
| Auto power-down | Reduces current to 0.9µA (typ) between conversions - scales power linearly with sample rate for burst-mode applications. |
| Internal conversion clock | Removes need for external timing components - simplifies layout and improves jitter immunity in noisy environments. |
| 1.8V–5V I/O compatibility | Interoperates directly with FPGA, MCU, and DSP interfaces across voltage domains without level-shifting circuitry. |
| H-grade temperature qualification | Full electrical specification guaranteed from –40°C to 125°C - suitable for extended-life industrial and automotive deployments. |
Applications
| Medical Imaging Signal Chain | Industrial Process Controller Input Module |
|---|---|
Use Scenario: Digitizing low-noise analog outputs from ultrasound transducer front-end amplifiers in portable diagnostic equipment. IC Role / Device Role / Timing Role: High-resolution SAR ADC capturing baseband echo signals with minimal added noise and distortion. Use Value: 97dB SNR and –120dB THD preserve weak tissue reflection details; 250ksps supports real-time B-mode frame rates. | Use Scenario: Sampling 4–20mA loop sensor outputs and thermocouple signals in programmable logic controller (PLC) analog input cards. IC Role / Device Role / Timing Role: Precision unipolar ADC interfacing with isolated signal conditioning stages in DIN-rail mounted controllers. Use Value: ±2.5LSB INL ensures accurate calibration traceability; H-grade operation maintains accuracy in hot control cabinets. |
| Portable Test & Measurement Instrument | High-Speed Data Acquisition System |
Use Scenario: Battery-powered handheld oscilloscopes or spectrum analyzers requiring low power and high fidelity. IC Role / Device Role / Timing Role: Core digitizer in multi-channel acquisition subsystem with synchronized sampling. Use Value: 3.4mW at 250ksps extends battery life; daisy-chain mode reduces microcontroller GPIO count for channel expansion. | Use Scenario: Modular DAQ chassis capturing vibration, strain, or acoustic emissions in predictive maintenance systems. IC Role / Device Role / Timing Role: High-throughput ADC in slot-based backplane architecture with deterministic latency. Use Value: No missing codes and 18-bit resolution resolve fine-grained spectral features; SPI interface enables compact FPGA-based controller design. |
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, 1.8V supply only, no daisy-chain mode, lower SNR (92.5dB typ) | Targeted at higher-speed, lower-resolution applications where throughput >250ksps is required and 18-bit precision is unnecessary | Select when system prioritizes speed over resolution and operates exclusively at 1.8V logic levels. |
| AD7606C-18BSTZ | 8-channel simultaneous-sampling, ±10V bipolar input, 2.5V reference fixed, higher power (140mW), larger LQFP package | Designed for multi-sensor monitoring in power quality analyzers and motor drives requiring true bipolar inputs | Select when multi-channel synchronization and bipolar input range outweigh single-channel power/performance optimization. |
Compared with ADS8860IDRCT and AD7606C-18BSTZ, the LTC2364HMS-18#PBF uniquely balances 18-bit precision, ultra-low power (3.4mW), H-grade temperature operation, and flexible daisy-chain expandability - making it optimal for single-channel, battery-aware, high-fidelity acquisition where thermal robustness and interface simplicity are critical.
Availability
LTC2364HMS-18#PBF is available at Aetrix Electronics and suitable for medical imaging front-ends, industrial process controller input modules, and portable test instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC2364HMS-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 semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC2364HMS-18#PBF belongs to ADI's legacy Linear Technology precision data converter portfolio, engineered specifically for low-noise, low-power, high-speed SAR ADC applications demanding guaranteed 18-bit performance in extended temperature environments.
FAQ
What is the maximum operating temperature for the LTC2364HMS-18#PBF?
The LTC2364HMS-18#PBF is rated for continuous operation from –40°C to 125°C (H-grade), with all electrical specifications guaranteed across this full range. This makes the LTC2364HMS-18#PBF suitable for under-hood automotive sensing, industrial control cabinets, and downhole instrumentation where ambient temperatures exceed standard commercial or industrial grades.
Does the LTC2364HMS-18#PBF require an external reference, and what are the voltage limits?
Yes, the LTC2364HMS-18#PBF requires an external reference applied to the REF pins (7 and 8). The reference voltage must be between 2.5V and 5.1V, and must be decoupled with a 47µF X5R ceramic capacitor placed close to the REF pins. The LTC2364HMS-18#PBF draws reference current that scales with sampling rate, peaking at 0.2mA at 250ksps.
How does the daisy-chain mode work on the LTC2364HMS-18#PBF?
Daisy-chain mode is enabled by driving the CHAIN pin (1) high. In this mode, RDL/SDI becomes a serial data input, allowing multiple LTC2364HMS-18#PBF devices to share one SPI bus. Conversion results cascade through the chain on SDO, with timing governed by tSCKCH (≥13.5ns). This reduces microcontroller pin count and simplifies multi-channel synchronization without external logic.
What is the power consumption of the LTC2364HMS-18#PBF at 250ksps and in power-down mode?
At 250ksps, the LTC2364HMS-18#PBF consumes 3.4mW total (1.7mA from VDD + 0.9mA from OVDD + 0.2mA reference current). In power-down mode (no conversions), supply current drops to 0.9µA (typ), reducing power to 2.25µW - ideal for wake-on-event architectures in battery-powered systems using the LTC2364HMS-18#PBF.
Is the LTC2364HMS-18#PBF pin-compatible with other variants in the LTC2364-18 family?
Yes, the LTC2364HMS-18#PBF shares identical pinout and footprint with all MSOP-packaged LTC2364-18 variants (e.g., LTC2364CMS-18#PBF, LTC2364IMS-18#PBF). Only the temperature grade differs: C-grade (0°C–70°C), I-grade (–40°C–85°C), and H-grade (–40°C–125°C). No PCB redesign is needed when upgrading from I-grade to H-grade for enhanced thermal reliability.
LTC2364HMS-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:
- Pseudo-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:
- -
LTC2364HMS-18#PBF FAQ
1.How can I place an order for LTC2364HMS-18#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2364HMS-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 LTC2364HMS-18#PBF reliable?
The price and inventory of LTC2364HMS-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 LTC2364HMS-18#PBF is usually 5 days.
3.What payment methods are accepted for LTC2364HMS-18#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2364HMS-18#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2364HMS-18#PBF?
LTC2364HMS-18#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2364HMS-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 LTC2364HMS-18#PBF?
For technical support, including LTC2364HMS-18#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2364HMS-18#PBF requirements.
6.How does Aetrix verify that LTC2364HMS-18#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2364HMS-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 LTC2364HMS-18#PBF meets industry standards.
7.What is the process for return or replacement of LTC2364HMS-18#PBF?
All LTC2364HMS-18#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2364HMS-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 LTC2364HMS-18#PBF part is unused and in its original packaging.
Return procedure for LTC2364HMS-18#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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