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Analog Devices Inc. LTC2368IMS-16#PBF
- Part No.:
- LTC2368IMS-16#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TFSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC2368IMS-16#PBF.pdf
- Description:
- IC ADC 16BIT SAR 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,915
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Product details
Overview
LTC2368IMS-16#PBF from Analog Devices (formerly Linear Technology) is a 16-bit, 1 Msps pseudo-differential unipolar successive approximation register (SAR) ADC operating from a single 2.5V supply. It delivers ±0.75 LSB INL max, guaranteed no missing codes, and 94.7 dB SNR at 2 kHz input with 5 V reference - enabling high-fidelity data acquisition in compact, low-power systems such as portable instrumentation and industrial process control.
For engineers reviewing the LTC2368IMS-16#PBF datasheet, LTC2368IMS-16#PBF pinout, LTC2368IMS-16#PBF application, or LTC2368IMS-16#PBF equivalent, key selection criteria include its 16-lead MSOP package, –40°C to +85°C temperature grade, SPI-compatible daisy-chain interface, internal conversion clock, and 13.5 mW power consumption at full throughput - all critical for embedded signal chain design and thermal-constrained deployments.
Technical Context
The LTC2368IMS-16#PBF implements a charge-redistribution SAR architecture with a 16-bit CDAC and differential comparator, sampling pseudo-differential inputs (IN+, IN–) over 0 V to VREF with VREF programmable from 2.5 V to 5.1 V. Its acquisition phase draws transient current into 45 pF input capacitance, while conversion uses an internal oscillator to fix tCONV at 460–527 ns - eliminating external clock dependency.
It supports dual-supply operation: 2.375–2.625 V on VDD for analog core and 1.71–5.25 V on OVDD for I/O logic, enabling interoperability with 1.8 V, 2.5 V, 3.3 V, or 5 V host controllers. The CHAIN pin enables daisy-chain mode for multi-ADC synchronization without added timing overhead or pipeline latency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 65,536 discrete output levels for high dynamic range measurement. |
| Sampling Rate | 1 Msps - supports real-time capture of signals up to 500 kHz Nyquist bandwidth. |
| INL (Max) | ±0.75 LSB - ensures monotonicity and linearity critical for precision sensor interfacing. |
| SNR (Typ) | 94.7 dB at fIN = 2 kHz - enables >15.7 ENOB for accurate low-distortion waveform digitization. |
| Power @ 1 Msps | 13.5 mW - allows battery-powered operation with minimal thermal impact in sealed enclosures. |
| Reference Range | 2.5 V to 5.1 V - permits flexible scaling of input full-scale range without external gain stages. |
| Operating Temp | –40°C to +85°C - qualified for industrial environments including factory automation and field instrumentation. |
Pinout & Package
Package: 16-lead plastic MSOP (small outline, exposed pad not present), 4.0 mm × 3.0 mm footprint, rated for –40°C to +85°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CHAIN (1) | Mode selector | High enables daisy-chain serial input (SDI); low enables RDL bus-enable function - configures interface topology without hardware change. |
| VDD (2) | Analog supply | 2.5 V ±62.5 mV core supply - must be bypassed with 10 µF ceramic capacitor to GND for noise-sensitive SAR operation. |
| GND (3,6,10,16) | Ground reference | Four dedicated ground pins minimize ground bounce and improve PSRR during high-speed conversion cycles. |
| IN+ (4), IN– (5) | Pseudo-differential analog inputs | IN+ accepts 0 V to VREF; IN– is ground-sense pin with ±100 mV range - rejects common-mode noise while preserving unipolar input structure. |
| REF (7,8) | Reference voltage inputs | Dual REF pins reduce impedance and improve decoupling - require 47 µF X5R ceramic capacitor close to package for stable 2.5–5.1 V reference delivery. |
| CNV (9) | Convert trigger | Rising-edge–sensitive start-of-conversion signal - initiates acquisition and powers up internal circuitry; no minimum pulse width required. |
| BUSY (11) | Status indicator | Active-high open-drain output signals conversion progress - used for timing handshaking or automatic sleep/wake coordination. |
| RDL/SDI (12) | Configurable serial I/O | Function depends on CHAIN state: bus enable (normal) or serial data input (chain) - eliminates need for external multiplexing logic. |
| SCK (13) | Serial clock input | Accepts up to 100 MHz SCK (10 ns period) - supports high-speed readout and daisy-chain propagation with 9.5 ns SDO valid delay. |
| SDO (14) | Serial data output | MSB-first straight-binary output - compatible with standard SPI masters; tri-state when RDL = low in normal mode. |
| OVDD (15) | I/O supply | 1.71–5.25 V digital interface supply - enables direct connection to mixed-voltage FPGA or MCU I/O banks without level shifters. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay / zero cycle latency | Enables deterministic real-time control loops - conversion result available immediately after BUSY deasserts, with no FIFO buffering or timing uncertainty. |
| Auto power-down between conversions | Reduces average power to 13.5 µW at 1 kSPS - extends battery life in intermittent-sampling applications like condition monitoring sensors. |
| SPI-compatible interface with daisy-chain mode | Supports synchronous readout of multiple LTC2368IMS-16#PBF devices using one SCK/SCKCH line - simplifies PCB routing and reduces controller GPIO count. |
| Internal conversion clock | Removes need for external timing components - eliminates jitter sources and eases layout in noise-sensitive analog sections. |
| Guaranteed 16-bit no missing codes | Ensures full resolution across entire temperature range - eliminates calibration gaps in closed-loop feedback or metrology-grade measurements. |
Applications
| Medical Imaging Signal Chain | Industrial Process Control |
|---|---|
Use Scenario: Digitizing low-noise analog outputs from ultrasound transducer front-ends or MRI gradient coil monitors. IC Role / Device Role / Timing Role: High-SNR, low-latency ADC capturing baseband signals at up to 1 Msps with precise amplitude fidelity. Use Value: 94.7 dB SNR and ±0.75 LSB INL preserve diagnostic image contrast and spatial resolution without post-acquisition correction. | Use Scenario: Sampling analog sensor outputs (pressure, flow, temperature) in PLC I/O modules with tight real-time deadlines. IC Role / Device Role / Timing Role: Deterministic SAR converter providing immediate conversion completion via BUSY flag for deterministic scan-cycle timing. Use Value: Zero cycle latency and 1 µs minimum inter-conversion time enable sub-millisecond control loop execution in safety-critical systems. |
| Portable Test Equipment | Automated Test Equipment (ATE) |
Use Scenario: Battery-powered handheld oscilloscopes or spectrum analyzers requiring high-resolution waveform capture. IC Role / Device Role / Timing Role: Low-power 16-bit ADC with 13.5 mW active consumption and auto power-down during idle intervals. Use Value: Enables >8-hour runtime on single-cell Li-ion while maintaining >15.7 ENOB for accurate signal analysis. | Use Scenario: Multi-channel parallel digitization in rack-mounted ATE systems performing parametric testing of ICs. IC Role / Device Role / Timing Role: Daisy-chain–configured ADC array synchronized by shared CNV and SCK, reducing system-level timing skew. Use Value: Eliminates per-channel clock distribution and enables simultaneous sampling across ≥8 channels with <1 ns inter-device aperture jitter. |
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 |
|---|---|---|---|
| ADS8860IDRCT | 16-bit, 1 Msps, single-ended input only; requires external reference; 1.8 V OVDD min. | Lacks pseudo-differential input and internal reference buffer - needs external driver for common-mode rejection. | Select when board space is constrained (2.5 mm × 2.5 mm DFN) and input signals are truly single-ended with low CM noise. |
| AD7960BCPZ | 18-bit, 5 Msps, true differential input; requires external reference and separate analog/digital supplies; higher power (43 mW). | Higher resolution and speed but demands more complex power sequencing and layout - not drop-in compatible. | Choose when >16-bit ENOB and >1 Msps throughput are mandatory, and thermal/power budget allows. |
Compared with ADS8860IDRCT and AD7960BCPZ, the LTC2368IMS-16#PBF uniquely balances 16-bit precision, pseudo-differential noise immunity, ultra-low latency, and 13.5 mW power - making it optimal for industrial and portable systems where signal integrity, timing determinism, and energy efficiency are jointly critical.
Availability
LTC2368IMS-16#PBF is available at Aetrix Electronics and suitable for medical imaging signal chains, industrial process controllers, and portable test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC2368IMS-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 semiconductors.
The LTC2368IMS-16#PBF belongs to Linear's precision SAR ADC product line, engineered for applications demanding high SNR, low latency, and robust operation in thermally variable environments - especially data acquisition, instrumentation, and industrial control.
FAQ
What is the maximum recommended reference voltage for the LTC2368IMS-16#PBF?
The LTC2368IMS-16#PBF supports a reference voltage range of 2.5 V to 5.1 V. Operation above 5.1 V violates absolute maximum ratings and may cause permanent damage. At 5.1 V, the LSB size is ~78 µV, maximizing dynamic range without exceeding specification limits. Reference stability and low noise - such as from the LTC6655-5 - are essential to maintain 94.7 dB SNR performance across temperature.
Does the LTC2368IMS-16#PBF require external clocking for conversion timing?
No, the LTC2368IMS-16#PBF integrates an internal oscillator that sets conversion time (tCONV = 460–527 ns), eliminating the need for external clock circuitry. This reduces jitter, simplifies layout, and improves system-level timing predictability. The SCK signal is used only for serial data transfer timing - not for core ADC operation - allowing flexible host interface clock rates up to 100 MHz.
Can the LTC2368IMS-16#PBF operate with a 1.8 V OVDD supply while using a 2.5 V VDD supply?
Yes, the LTC2368IMS-16#PBF fully supports independent OVDD (1.71–5.25 V) and VDD (2.375–2.625 V) supplies. Using 1.8 V OVDD with 2.5 V VDD enables direct interfacing with 1.8 V FPGAs or microcontrollers without level shifters, while maintaining optimal analog core performance. All digital input thresholds scale with OVDD (VIH = 0.8×OVDD, VIL = 0.2×OVDD), ensuring reliable logic recognition.
How does the CHAIN pin affect the RDL/SDI pin functionality in the LTC2368IMS-16#PBF?
When CHAIN = low, RDL/SDI functions as a bus-enable input controlling SDO tri-state behavior. When CHAIN = high, RDL/SDI becomes SDI - accepting daisy-chain serial data from upstream devices. This dual-mode capability allows flexible system expansion: single-device configurations use RDL for local bus control, while multi-ADC arrays use CHAIN to route data through a shared SDO line without additional control lines.
Is the LTC2368IMS-16#PBF pin-compatible with other variants in the LTC2368 family?
Yes, all LTC2368-x variants - including LTC2368CMS-16#PBF (0°C to 70°C), LTC2368IMS-16#PBF (–40°C to 85°C), and LTC2368HMS-16#PBF (–40°C to 125°C) - share identical 16-lead MSOP pinouts and electrical specifications. Only temperature grade and screening differ; no PCB redesign is needed when upgrading from commercial to industrial or high-reliability grades.
LTC2368IMS-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):
- 1M
- 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:
- -
LTC2368IMS-16#PBF FAQ
1.How can I place an order for LTC2368IMS-16#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2368IMS-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 LTC2368IMS-16#PBF reliable?
The price and inventory of LTC2368IMS-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 LTC2368IMS-16#PBF is usually 5 days.
3.What payment methods are accepted for LTC2368IMS-16#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2368IMS-16#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2368IMS-16#PBF?
LTC2368IMS-16#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2368IMS-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 LTC2368IMS-16#PBF?
For technical support, including LTC2368IMS-16#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2368IMS-16#PBF requirements.
6.How does Aetrix verify that LTC2368IMS-16#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2368IMS-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 LTC2368IMS-16#PBF meets industry standards.
7.What is the process for return or replacement of LTC2368IMS-16#PBF?
All LTC2368IMS-16#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2368IMS-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 LTC2368IMS-16#PBF part is unused and in its original packaging.
Return procedure for LTC2368IMS-16#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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