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Analog Devices Inc. LTC2367HMS-18#PBF
- Part No.:
- LTC2367HMS-18#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TFSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC2367HMS-18#PBF.pdf
- Description:
- IC ADC 18BIT SAR 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,181
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Product details
Overview
LTC2367HMS-18#PBF from Analog Devices (formerly Linear Technology) is an 18-bit, 500ksps pseudo-differential unipolar successive approximation register (SAR) ADC operating from a single 2.5V supply. It delivers 97dB typical SNR, ±2.5LSB max INL, and guaranteed no missing codes across its 0V to VREF input range (VREF = 2.5V–5.1V), enabling high-fidelity data acquisition in thermally demanding industrial sensor interfaces.
For engineers reviewing the LTC2367HMS-18#PBF datasheet, LTC2367HMS-18#PBF pinout, LTC2367HMS-18#PBF application, or LTC2367HMS-18#PBF equivalent, key selection criteria include H-grade (–40°C to 125°C) operation, daisy-chain SPI compatibility, internal conversion clock, and low 6.8mW power at full throughput - all critical for ruggedized portable instrumentation and high-speed process control systems.
Technical Context
The LTC2367HMS-18#PBF implements a charge-redistribution SAR architecture with a pseudo-differential front-end: IN+ accepts 0V to VREF signals while IN– serves as a ground-sense node with ±100mV range. Its internal oscillator eliminates external clock dependency, and conversion timing is fixed at 1.5µs with zero cycle latency.
It features dual-supply operation: 2.375V–2.625V on VDD powers the analog core, while 1.71V–5.25V on OVDD supports logic-level flexibility across 1.8V/2.5V/3.3V/5V host interfaces. Auto power-down between conversions reduces idle current to 0.9µA, scaling dynamically with sampling rate.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 18-bit - delivers 262,144 discrete output levels for sub-20µV LSB size at 5V reference |
| Sampling Rate | 500ksps - enables real-time capture of signals up to 250kHz Nyquist bandwidth |
| SNR | 97dB typical at fIN = 2kHz - ensures >16-bit effective resolution in low-noise signal chains |
| INL | ±2.5LSB maximum - guarantees monotonicity and linearity for precision closed-loop control |
| Power Dissipation | 6.8mW at 500ksps - allows thermal design margin in sealed enclosures up to 125°C ambient |
| Reference Range | 2.5V to 5.1V - supports flexible full-scale scaling without external gain stages |
| Operating Temp | –40°C to +125°C - qualified for under-hood automotive, downhole oil & gas, and industrial PLC environments |
Pinout & Package
Package: 16-lead plastic MSOP (5mm × 4.4mm), exposed pad not present (DFN variant has exposed GND pad; MSOP does not).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CHAIN (1) | Mode selector | High enables daisy-chain SPI mode; low enables RDL/SDI bus-enable function |
| VDD (2) | Analog core supply | 2.5V ±62.5mV rail powering SAR capacitor array and comparator - requires 10µF ceramic bypass |
| GND (3,6,10,16) | Analog/digital return | Four dedicated ground pins minimize ground bounce and improve PSRR in mixed-signal layouts |
| IN+ (4) | Pseudo-differential input | Accepts 0V to VREF voltage; sampled via 45pF CDAC with 40Ω switch resistance |
| IN– (5) | Ground sense reference | ±100mV range relative to GND; must connect to system ground plane or remote sense point |
| REF (7,8) | Reference voltage input | Dual-pin connection for low-impedance 2.5V–5.1V reference; requires 47µF X5R ceramic decoupling |
| CNV (9) | Convert trigger | Rising edge initiates acquisition and conversion; minimum 20ns pulse width required |
| BUSY (11) | Conversion status | Active-high open-drain output indicating ongoing conversion (1.5µs duration) |
| RDL/SDI (12) | Serial interface control/data | In normal mode: bus enable; in chain mode: serial data input for multi-ADC cascading |
| SCK (13) | Serial clock input | Accepts up to 100MHz SCK (10ns period); rising edge clocks out 18-bit straight-binary data on SDO |
| SDO (14) | Serial data output | MSB-first 18-bit output; tri-state when RDL/SDI = low or during conversion |
| OVDD (15) | I/O interface supply | 1.71V–5.25V logic rail - sets VIH/VIL thresholds and drives SDO/SCK/BUSY outputs |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | Zero-cycle latency enables deterministic timing for real-time control loops and trigger-based acquisition |
| Internal conversion clock | Removes need for external timing circuitry, simplifying PCB layout and reducing BOM count |
| Auto power-down | Reduces quiescent current to 0.9µA between conversions - extends battery life in portable instruments |
| Daisy-chain SPI mode | Allows synchronous readout of multiple LTC2367HMS-18#PBF devices using single SCK/SDO lines |
| H-grade temperature rating | Guaranteed AC/DC performance over –40°C to +125°C - validated for harsh-environment deployment |
Applications
| Industrial Process Monitoring | Portable High-Resolution DMM |
|---|---|
Use Scenario: Continuous monitoring of pressure, flow, and temperature transducers in chemical plant control cabinets with ambient temperatures up to 125°C. IC Role / Device Role / Timing Role: Primary digitizer converting 4–20mA loop signals conditioned by precision op-amps into 18-bit digital values at 500ksps for FPGA-based FFT analysis. Use Value: 97dB SNR and ±2.5LSB INL ensure <0.005% measurement uncertainty across full scale, meeting IEC 61000-6-4 immunity requirements. | Use Scenario: Battery-powered handheld multimeter requiring 6½-digit resolution and fast autoranging without warm-up drift. IC Role / Device Role / Timing Role: Core ADC acquiring DC voltage/current and AC RMS waveforms with internal reference buffering and auto-zero calibration cycles. Use Value: 6.8mW active power and 0.9µA shutdown current extend alkaline battery life to >200 hours per charge; H-grade operation prevents calibration drift in field use. |
| Medical Ultrasound Beamformer | Automotive ADAS Sensor Fusion |
Use Scenario: Digitizing echo return signals from phased-array transducers in portable ultrasound systems with strict size and thermal constraints. IC Role / Device Role / Timing Role: Channel ADC in multi-channel receive path, synchronized via daisy-chained CNV and SCK to maintain phase coherence across 16+ channels. Use Value: Pseudo-differential input rejects common-mode noise from high-voltage pulsers; 34MHz input bandwidth preserves transient fidelity of µs-scale echoes. | Use Scenario: Signal conditioning for radar/LiDAR time-of-flight measurements in engine bay-mounted ADAS ECUs exposed to thermal cycling. IC Role / Device Role / Timing Role: High-speed acquisition of analog outputs from MEMS inertial sensors and analog front-ends prior to DSP-based fusion algorithms. Use Value: Guaranteed 125°C operation and 97dB SNR enable direct mounting near heat sources; no missing codes prevent catastrophic misinterpretation of collision proximity data. |
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–3.6V supply only, no daisy-chain mode | Lower resolution limits dynamic range in vibration analysis; lacks H-grade temp support | Select when higher speed outweighs resolution needs and ambient stays ≤85°C |
| AD7606C-18BSTZ | True differential inputs, 8-channel simultaneous sampling, 275ksps, 5V supply required | Higher channel count but lower throughput; incompatible with 2.5V-only systems | Select for multi-sensor synchronized acquisition where 5V rails are available and 500ksps/channel is acceptable |
Compared with ADS8860IDRCT and AD7606C-18BSTZ, the LTC2367HMS-18#PBF uniquely combines 18-bit resolution, 500ksps throughput, H-grade temperature qualification, and 2.5V analog core operation - making it optimal for space-constrained, thermally aggressive, high-fidelity single-channel acquisition where daisy-chain scalability matters.
Availability
LTC2367HMS-18#PBF is available at Aetrix Electronics and suitable for industrial process control, portable instrumentation, medical imaging subsystems, and automotive ADAS sensor interfaces requiring stable component supply across extended temperature ranges.
Supply support for LTC2367HMS-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 LTC2367HMS-18#PBF belongs to ADI's precision SAR ADC product line, engineered for applications demanding ultra-low noise, guaranteed monotonicity, and robust operation in thermally extreme environments - especially where 18-bit resolution must be maintained at 500ksps without pipeline latency.
FAQ
What is the maximum operating temperature for the LTC2367HMS-18#PBF?
The LTC2367HMS-18#PBF is rated for continuous operation from –40°C to +125°C (H-grade). This specification is fully tested and guaranteed across all AC and DC parameters, including SNR, INL, and THD, making it suitable for under-hood automotive and downhole industrial deployments where ambient temperatures exceed 100°C.
Does the LTC2367HMS-18#PBF require an external clock source?
No, the LTC2367HMS-18#PBF integrates an internal oscillator that sets the conversion time at 1.5µs. External clocking is unnecessary for basic operation; however, the SCK input remains available for synchronizing serial data transfer to a host processor, supporting daisy-chain configurations without added timing components.
Can the LTC2367HMS-18#PBF interface directly with a 1.8V microcontroller?
Yes - the OVDD supply pin accepts 1.71V to 5.25V, and digital I/O thresholds scale accordingly. With OVDD = 1.8V, VIH is 1.44V min and VIL is 0.36V max, ensuring reliable communication with 1.8V logic families. The SDO output drives to OVDD – 0.2V, and BUSY/SCK inputs tolerate 1.8V-compatible levels without level shifters.
What is the purpose of the CHAIN pin on the LTC2367HMS-18#PBF?
The CHAIN pin configures the serial interface mode: when pulled high, it enables daisy-chain operation where RDL/SDI becomes a serial data input, allowing multiple LTC2367HMS-18#PBF devices to share one SCK and SDO line. When low, RDL/SDI acts as a bus-enable control, permitting independent SPI access to each device - providing layout flexibility for both compact and scalable designs.
How does the pseudo-differential input architecture of the LTC2367HMS-18#PBF improve noise rejection?
The LTC2367HMS-18#PBF's pseudo-differential input uses IN+ (0V to VREF) and IN– (±100mV around GND) to reject common-mode noise on shared ground paths. With 80dB CMRR at 250kHz, it suppresses interference from switching regulators or motor drives without requiring matched transformer coupling - simplifying front-end design while preserving 97dB SNR in noisy industrial settings.
LTC2367HMS-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):
- 500k
- 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:
- -
LTC2367HMS-18#PBF FAQ
1.How can I place an order for LTC2367HMS-18#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2367HMS-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 LTC2367HMS-18#PBF reliable?
The price and inventory of LTC2367HMS-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 LTC2367HMS-18#PBF is usually 5 days.
3.What payment methods are accepted for LTC2367HMS-18#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2367HMS-18#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2367HMS-18#PBF?
LTC2367HMS-18#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2367HMS-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 LTC2367HMS-18#PBF?
For technical support, including LTC2367HMS-18#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2367HMS-18#PBF requirements.
6.How does Aetrix verify that LTC2367HMS-18#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2367HMS-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 LTC2367HMS-18#PBF meets industry standards.
7.What is the process for return or replacement of LTC2367HMS-18#PBF?
All LTC2367HMS-18#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2367HMS-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 LTC2367HMS-18#PBF part is unused and in its original packaging.
Return procedure for LTC2367HMS-18#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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