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Analog Devices Inc. LTC2367IMS-18#PBF
- Part No.:
- LTC2367IMS-18#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TFSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC2367IMS-18#PBF.pdf
- Description:
- IC ADC 18BIT SAR 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,255
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Product details
Overview
LTC2367IMS-18#PBF from Analog Devices (formerly Linear Technology) is an 18-bit pseudo-differential unipolar successive approximation register (SAR) ADC with 500ksps throughput, 97dB typical SNR, ±2.5LSB max INL, and guaranteed no missing codes. It operates from a single 2.5V supply, accepts 2.5V–5.1V external reference, and targets high-precision data acquisition in compact, low-power systems.
For engineers reviewing the LTC2367IMS-18#PBF datasheet, LTC2367IMS-18#PBF pinout, LTC2367IMS-18#PBF application, or LTC2367IMS-18#PBF equivalent, key selection criteria include its 500ksps zero-latency conversion rate, 16-pin MSOP package with –40°C to +85°C operating range, SPI-compatible serial interface with daisy-chain mode, and internal conversion clock eliminating external timing constraints.
Technical Context
The LTC2367IMS-18#PBF implements a charge-redistribution SAR architecture with a pseudo-differential input stage (IN+, IN–), where IN– serves as a ground-sense node with ±100mV range. Conversion is initiated by a rising edge on CNV, and the internal oscillator fixes tCONV at 1.5µs max - enabling deterministic timing without external clocks.
Its SPI-compatible serial interface supports 1.8V–5V I/O logic via OVDD, features RDL/SDI dual-function pin for normal/bus-enable or chain-mode operation, and delivers straight-binary 18-bit output MSB-first on SDO. The device automatically powers down between conversions, scaling quiescent current to sampling rate - 6.8mW at 500ksps, 6.8µW at 500sps.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 18-bit - delivers 262,144 discrete output levels for ultra-fine amplitude quantization. |
| Sampling Rate | 500ksps - enables real-time capture of signals up to 250kHz Nyquist bandwidth with no pipeline delay. |
| SNR (fIN = 2kHz) | 97dB typical - corresponds to ~12.1 effective bits (ENOB), critical for high-fidelity signal reconstruction. |
| INL (max) | ±2.5LSB - ensures monotonicity and linearity error ≤ ±48µV (at VREF = 5V), supporting precision measurement. |
| Reference Range | 2.5V to 5.1V - allows flexible full-scale adjustment; LSB size scales linearly (e.g., 19µV at 5V REF). |
| Power (500ksps) | 6.8mW - achieved with 2.5V VDD and 2.5V OVDD, enabling battery-operated instrumentation. |
| Operating Temp | –40°C to +85°C - qualified for industrial environments without derating. |
Pinout & Package
Package: 16-lead plastic MSOP (small-outline integrated circuit), 3mm × 4.9mm footprint, exposed pad not present (unlike DFN variant). Compatible with standard reflow profiles and manual soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CHAIN (1) | Mode selector | Low = normal mode (RDL/SDI = bus enable); high = daisy-chain mode (RDL/SDI = serial data input). |
| VDD (2) | Analog power supply | 2.375V–2.625V supply; bypass with 10µF ceramic capacitor to GND for noise suppression. |
| GND (3,6,10,16) | Ground reference | Four dedicated GND pins minimize ground bounce and improve PSRR in high-speed sampling. |
| IN+ (4) | Pseudo-differential analog input | Accepts 0V to VREF voltage relative to IN–; input capacitance = 45pF during acquisition. |
| IN– (5) | Ground sense reference | ±100mV range w.r.t. GND; must connect to system ground plane or remote ground point. |
| REF (7,8) | Reference voltage inputs | Dual-pinned for low-inductance connection; requires 47µF X5R ceramic decoupling at pin. |
| CNV (9) | Convert trigger | Rising-edge initiates acquisition and conversion; minimum pulse width = 20ns. |
| BUSY (11) | Conversion status indicator | High during conversion (tCONV ≈ 1.5µs); used for timing synchronization or interrupt generation. |
| RDL/SDI (12) | Serial interface control/data | Configurable: bus enable (normal) or SDI (chain mode); logic levels referenced to OVDD. |
| SCK (13) | Serial clock input | Supports up to 100MHz clock (10ns period); controls data shift-out timing on SDO. |
| SDO (14) | Serial data output | MSB-first straight-binary 18-bit result; valid within 9.5ns after SCK↑ (CL = 20pF). |
| OVDD (15) | Digital I/O supply | 1.71V–5.25V logic interface supply; sets VIH/VIL thresholds and drives SDO/SCK/RDL. |
Key Features
| Feature | Design Value |
|---|---|
| No missing codes at 18 bits | Guaranteed monotonic transfer function across full temperature range (–40°C to +85°C), essential for closed-loop control. |
| Internal conversion clock | Eliminates need for external timing components; simplifies PCB layout and reduces BOM count in space-constrained designs. |
| Auto power-down between conversions | Reduces average power proportionally to sampling rate - e.g., drops to 6.8µW at 500sps for intermittent sensing. |
| SPI-compatible daisy-chain mode | Enables multi-channel synchronized sampling using single SCK/SDO bus - ideal for modular DAQ systems. |
| Pseudo-differential input architecture | Rejects common-mode noise on IN+/IN– pair while maintaining unipolar 0V–VREF range - improves EMI immunity without differential drivers. |
Applications
| Medical Imaging Signal Chain | Industrial Process Monitoring |
|---|---|
Use Scenario: Digitizing low-noise analog outputs from CT/MRI detector front-ends or ultrasound beamformers requiring high dynamic range and minimal harmonic distortion. IC Role / Device Role / Timing Role: Primary ADC capturing 2kHz–100kHz sensor waveforms with 97dB SNR and –120dB THD to preserve diagnostic image fidelity. Use Value: Enables 16+ bit effective resolution in portable imaging devices without cooling or complex analog filtering. |
Use Scenario: High-accuracy monitoring of pressure, temperature, or flow transducers in PLC I/O modules deployed in factory automation environments. IC Role / Device Role / Timing Role: Precision analog-to-digital conversion of 4–20mA loop signals conditioned by op-amps, operating continuously at 500ksps burst rates. Use Value: Delivers ±2.5LSB INL and guaranteed no missing codes over –40°C to +85°C, ensuring calibration stability across thermal cycles. |
| Portable Test Equipment | Battery-Powered Data Loggers |
Use Scenario: Handheld oscilloscopes or spectrum analyzers requiring fast sampling, low power, and compact form factor for field diagnostics. IC Role / Device Role / Timing Role: Core SAR ADC interfacing directly to FPGA or microcontroller via SPI, leveraging daisy-chain mode for multi-channel expansion. Use Value: 6.8mW consumption at full speed extends battery life; 16-pin MSOP fits tight board layouts without sacrificing performance. |
Use Scenario: Environmental sensors logging temperature, humidity, or gas concentration over weeks on coin-cell batteries. IC Role / Device Role / Timing Role: Low-duty-cycle ADC activated by timer interrupt, auto-powering down between 1–10s intervals to minimize average current. Use Value: 6.8µW standby power (500sps) and <1µA REF leakage in idle state maximize energy efficiency per sample. |
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, SPI interface; lower resolution but higher speed and smaller 10-pin WSON package. | Best suited for applications prioritizing speed > resolution (e.g., motor control feedback) and ultra-compact layout. | Select when 16-bit ENOB suffices and PCB area is constrained; not drop-in due to different pin count and resolution. |
| AD7606C-18BSTZ | 18-bit, 1MSPS, simultaneous sampling of 8 channels, integrated analog front-end (PGA, anti-alias filter, reference); requires 5V supply. | Ideal for multi-channel industrial DAQ where channel density and analog conditioning outweigh single-channel optimization. | Choose for 8-channel synchronized acquisition; incompatible pinout and higher power (45mW) - not a direct replacement. |
Compared with ADS8860IDRCT and AD7606C-18BSTZ, the LTC2367IMS-18#PBF uniquely balances 18-bit precision, 500ksps zero-latency throughput, and ultra-low 6.8mW power in a single-channel MSOP package - making it optimal for space- and power-sensitive precision instrumentation where resolution and noise floor are paramount.
Availability
LTC2367IMS-18#PBF is available at Aetrix Electronics and suitable for medical imaging signal chains, industrial process monitoring systems, and portable test equipment requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for LTC2367IMS-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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC2367IMS-18#PBF belongs to Linear's precision SAR ADC product line, engineered specifically for applications demanding high resolution, low power, and robust operation in harsh industrial and portable environments - emphasizing noise performance, temperature stability, and ease of integration.
FAQ
What is the maximum sampling frequency supported by the LTC2367IMS-18#PBF?
The LTC2367IMS-18#PBF supports a maximum sampling frequency of 500ksps, with guaranteed timing performance across its full operating temperature range (–40°C to +85°C). This rate is achieved with no pipeline delay or cycle latency, meaning each conversion completes deterministically in ≤1.5µs after the CNV rising edge - enabling real-time signal capture without buffering overhead.
Does the LTC2367IMS-18#PBF require an external reference, and what voltage range is supported?
Yes, the LTC2367IMS-18#PBF requires an external reference applied to the REF pins (7 and 8). It supports a reference voltage range of 2.5V to 5.1V, allowing flexible full-scale adjustment. At 5V reference, the LSB size is 19µV; at 2.5V, it scales to 9.5µV. The device draws up to 0.32mA DC current from REF at 500ksps, necessitating proper decoupling with a 47µF X5R ceramic capacitor.
How does the pseudo-differential input architecture of the LTC2367IMS-18#PBF differ from true differential inputs?
The LTC2367IMS-18#PBF uses a pseudo-differential input: IN+ accepts 0V to VREF, while IN– serves as a ground-sense node with ±100mV range relative to GND. Unlike true differential ADCs, it does not digitize the difference between two active signals. Instead, it rejects common-mode noise on both inputs while preserving unipolar input range - simplifying front-end design and eliminating the need for matched differential drivers.
Can the LTC2367IMS-18#PBF operate with logic voltages other than 2.5V?
Yes, the LTC2367IMS-18#PBF supports 1.8V, 2.5V, 3.3V, and 5V logic interfaces via its OVDD pin (Pin 15), which sets the voltage thresholds for all digital I/Os (SCK, SDO, RDL/SDI, BUSY, CNV, CHAIN). This allows seamless integration with microcontrollers and FPGAs across multiple voltage domains without level-shifting circuitry.
What package type and temperature grade does the LTC2367IMS-18#PBF use?
The LTC2367IMS-18#PBF is packaged in a 16-lead plastic MSOP (mini small-outline package) with dimensions 3mm × 4.9mm and specified for operation from –40°C to +85°C (Industrial grade). It is lead-free, RoHS-compliant, and marked "236718" on the top surface. This differs from the DFN variant (e.g., LTC2367IDE-18#PBF), which uses a 4mm × 3mm body with exposed thermal pad.
LTC2367IMS-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 ~ 85°C
- Supplier Device Package:
- 16-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2367IMS-18#PBF FAQ
1.How can I place an order for LTC2367IMS-18#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2367IMS-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 LTC2367IMS-18#PBF reliable?
The price and inventory of LTC2367IMS-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 LTC2367IMS-18#PBF is usually 5 days.
3.What payment methods are accepted for LTC2367IMS-18#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2367IMS-18#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2367IMS-18#PBF?
LTC2367IMS-18#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2367IMS-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 LTC2367IMS-18#PBF?
For technical support, including LTC2367IMS-18#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2367IMS-18#PBF requirements.
6.How does Aetrix verify that LTC2367IMS-18#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2367IMS-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 LTC2367IMS-18#PBF meets industry standards.
7.What is the process for return or replacement of LTC2367IMS-18#PBF?
All LTC2367IMS-18#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2367IMS-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 LTC2367IMS-18#PBF part is unused and in its original packaging.
Return procedure for LTC2367IMS-18#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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