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Analog Devices Inc. LTC2311IMSE-14#WPBF
- Part No.:
- LTC2311IMSE-14#WPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TFSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LTC2311IMSE-14#WPBF.pdf
- Description:
- 14-B + SIGN, 5MSPS DIFF IN ADC W
- Quantity:
- Payment:
- Shipping:
Inventory:3,920
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Product details
Overview
LTC2311IMSE-14#WPBF from Analog Devices is a 14-bit + sign successive approximation register (SAR) analog-to-digital converter with differential inputs, 5Msps throughput, ±0.75LSB typical INL, 80dB SNR at 2.2MHz, and wide 0V to VDD common mode input range. It operates from single 3.3V or 5V supply, integrates a low-drift 4.096V internal reference, and supports CMOS or LVDS SPI-compatible serial interface - ideal for high-speed data acquisition in automotive sensor interfaces.
For engineers reviewing the LTC2311IMSE-14#WPBF datasheet, LTC2311IMSE-14#WPBF pinout, LTC2311IMSE-14#WPBF application, or LTC2311IMSE-14#WPBF equivalent, key selection criteria include guaranteed no-missing-codes performance over –40°C to 85°C, 1-cycle latency timing, 1.8V–2.5V I/O voltage compatibility, and AEC-Q100 qualification for automotive use.
Technical Context
The LTC2311IMSE-14#WPBF implements a 15-bit SAR architecture with two-phase operation: acquisition (sample capacitor connected to AIN+/AIN–) followed by conversion using a binary-weighted CDAC and differential comparator. Its fully differential front-end accepts ±REFOUT input spans while supporting pseudo-differential unipolar/bipolar modes without configuration.
It features dual-reference capability: internal 4.096V temperature-compensated buffer (20ppm/°C max drift) and external 1.25V buffered REFIN input. The configurable CMOS/LVDS serial interface enables flexible host interfacing - CMOS mode uses SDO+/SCK+, LVDS mode requires differential SDO±/SCK± with 100Ω termination.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit + sign (15-bit two's complement output), enabling full-scale digitization of ±4.096V differential inputs with 250µV LSB step size. |
| Sampling Rate | 5Msps maximum, with one-cycle latency - allows real-time capture of signals up to 2.2MHz Nyquist bandwidth without pipeline delay. |
| INL Error | ±2LSB guaranteed over temperature, ensuring monotonicity and accurate transfer function alignment across –40°C to 85°C. |
| SNR / THD | 80.6dB typical SNR and –90dB typical THD at fIN = 2.2MHz - supports high-fidelity signal reconstruction in imaging and communications. |
| Input Range | 8VP-P differential (±REFOUT), with 0V to VDD common mode range - eliminates need for level-shifting circuitry in mixed-supply systems. |
| Power Dissipation | 50mW at 5V/5Msps (CMOS), 55mW (LVDS); sleep mode draws ≤0.5µW - enables ultra-low-power operation during idle cycles in battery-sensitive applications. |
| Reference | Internal 4.096V ±0.3% buffered reference (20ppm/°C max drift); external 1.25V REFIN input supports precision calibration or alternative reference sources. |
Pinout & Package
Package: 16-lead (4mm × 5mm) plastic MSOP with exposed pad (Pin 17), rated for –40°C to 85°C operating temperature. Exposed pad must be soldered to PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 5, 8, 11) | Ground reference | Multiple dedicated ground pins reduce impedance and improve noise immunity; all must connect directly to solid ground plane. |
| REFIN (Pin 2) | 1.25V reference buffer I/O | Outputs nominal 1.25V; grounding disables REFOUT buffer to allow external reference injection into REFOUT pin. |
| REFOUT (Pin 3) | 4.096V reference output | Low-drift internal reference; requires 10µF ceramic decoupling; disabled when REFIN = GND. |
| VDD (Pin 4) | Analog power supply | Accepts 3.3V or 5V; bypassed with 1µF ceramic capacitor near pin to suppress supply noise. |
| AIN+, AIN– (Pins 6, 7) | Differential analog inputs | Support ±REFOUT full-scale swing; tolerate 0V to VDD common mode; modeled as 15Ω RON + 10pF CIN. |
| CNV (Pin 9) | Convert control input | TTL-compatible; falling edge initiates conversion and triggers serial readout; low-jitter requirement critical for timing accuracy. |
| CMOS/LVDS (Pin 10) | I/O interface mode select | GND = CMOS; OVDD = LVDS; floating = low-power LVDS - configures SDO/SCK pin functionality and drive strength. |
| OVDD (Pin 12) | Digital I/O supply | 1.71V–2.5V range; sets logic levels for SDO/SCK; bypassed with 1µF ceramic capacitor. |
| SDO+ (Pin 14) | Serial data output (CMOS) | MSB-first output on SCK falling edge; active only in CMOS mode; logic level referenced to OVDD. |
| SCK+ (Pin 16) | Serial clock input (CMOS) | Single-ended clock input; falling edge clocks data; logic level referenced to OVDD. |
| SDO–, SCK– (Pins 13, 15) | Differential outputs (LVDS) | Active only in LVDS mode; require 100Ω differential termination at receiver; support high-noise-immunity FPGA interfacing. |
| Exposed Pad (Pin 17) | Thermal & electrical ground | Mandatory solder connection to PCB ground plane for thermal dissipation and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Rated for automotive applications across –40°C to 85°C, with production traceability and reliability reporting per automotive standards. |
| Configurable I/O interface | Single-pin (Pin 10) selection between CMOS, LVDS, or low-power LVDS - simplifies board design for multiple host platforms. |
| No-missing-codes guarantee | Guaranteed 14-bit resolution with no missing codes over full temperature range - ensures deterministic behavior in closed-loop control systems. |
| Wide common mode range | 0V to VDD input common mode tolerance - relaxes requirements on preceding signal conditioning and enables direct connection to diverse sensor outputs. |
| Low-power sleep modes | ≤0.5µW sleep current at 5V - extends battery life in portable diagnostic tools and remote sensing nodes without sacrificing wake-up latency. |
Applications
| Automotive Radar Signal Acquisition | High-Speed Industrial Data Logging |
|---|---|
Use Scenario: Digitizing IF outputs from 77GHz radar transceivers in ADAS front-end modules under harsh automotive temperature conditions. IC Role / Device Role / Timing Role: Primary SAR ADC capturing 5Msps baseband samples with 1-cycle latency to preserve phase coherence for FFT-based object detection. Use Value: AEC-Q100 qualification ensures reliability at 85°C ambient; 80dB SNR enables accurate range/Doppler resolution; differential input rejects common-mode switching noise from nearby DC/DC converters. | Use Scenario: Continuous waveform capture from vibration sensors on rotating machinery in factory automation systems. IC Role / Device Role / Timing Role: High-fidelity analog front-end ADC interfacing with FPGA-based real-time FFT engines for predictive maintenance analytics. Use Value: 5Msps throughput supports >2MHz analysis bandwidth; ±0.75LSB INL ensures amplitude linearity for spectral signature fidelity; LVDS interface provides noise immunity over 15cm PCB traces to FPGA. |
| Optical Network Monitoring | Medical Ultrasound Beamforming |
Use Scenario: Sampling photodiode current outputs in coherent optical receivers for real-time OSNR and chromatic dispersion monitoring. IC Role / Device Role / Timing Role: Precision digitizer for analog monitor channels requiring stable gain/offset over temperature and low harmonic distortion. Use Value: Internal 4.096V reference (20ppm/°C) eliminates external reference drift errors; –90dB THD prevents harmonic aliasing into adjacent wavelength bands; 1.8V–2.5V I/O matches FPGA bank voltages. | Use Scenario: Channel-level digitization in portable ultrasound probes where power, size, and SNR are tightly constrained. IC Role / Device Role / Timing Role: Low-noise, low-power ADC per receive channel feeding digital beamformer ASICs. Use Value: 80.6dB SNR maximizes dynamic range for weak echo detection; 50mW power at 5V enables multi-channel integration within thermal envelope; MSOP package fits compact probe PCB layouts. |
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 resolution, 5Msps, 2.5V supply only, no integrated reference, SPI-only (no LVDS), –40°C to 85°C | Higher resolution but requires external reference and level-shifting for 3.3V/5V systems; lacks AEC-Q100 qualification | Select when absolute precision >16 bits is required and system can accommodate external reference design complexity. |
| ADS8860IDRCT | 16-bit resolution, 1Msps, 2.5V–5V supply, internal reference, SPI-only, –40°C to 85°C | Lower speed and resolution; smaller 3mm × 3mm DFN package; no LVDS or AEC-Q100 support | Select for cost-sensitive, space-constrained industrial DAQ where 1Msps suffices and LVDS noise immunity is not needed. |
Compared with AD7960BCPZ-RL7 and ADS8860IDRCT, the LTC2311IMSE-14#WPBF uniquely combines AEC-Q100 qualification, integrated 4.096V reference, LVDS/CMOS configurability, and guaranteed no-missing-codes performance - making it optimal for automotive and high-noise industrial environments demanding both speed and robustness.
Availability
LTC2311IMSE-14#WPBF is available at Aetrix Electronics and suitable for automotive radar signal acquisition, high-speed industrial data logging, optical network monitoring, and medical ultrasound beamforming requiring stable component supply across extended temperature ranges.
Supply support for LTC2311IMSE-14#WPBF 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC2311-14 product line delivers high-speed, low-noise SAR ADCs optimized for applications demanding precision, low power, and robust operation in harsh environments - especially automotive sensor interfaces and real-time signal analysis systems.
FAQ
What is the operating temperature range for the LTC2311IMSE-14#WPBF?
The LTC2311IMSE-14#WPBF is specified for operation from –40°C to +85°C and is AEC-Q100 qualified for automotive applications. This rating is confirmed in the Absolute Maximum Ratings table and Order Information section of the official datasheet, where "I" grade denotes the industrial temperature range and "#WPBF" suffix indicates automotive-grade packaging and traceability.
Does the LTC2311IMSE-14#WPBF include an internal voltage reference?
Yes, the LTC2311IMSE-14#WPBF integrates a low-drift, temperature-compensated 4.096V reference buffer (REFOUT) with max 20ppm/°C drift. It also provides a 1.25V buffered REFIN pin that can be grounded to disable the internal reference and accept an external source - enabling flexible calibration and system-level reference sharing.
Can the LTC2311IMSE-14#WPBF interface with both CMOS and LVDS logic families?
Yes, the LTC2311IMSE-14#WPBF supports both CMOS and LVDS serial interfaces via the CMOS/LVDS pin (Pin 10): grounding selects CMOS mode (SDO+/SCK+), tying to OVDD selects LVDS mode (SDO±/SCK±), and floating enables low-power LVDS. This eliminates level-shifters and simplifies FPGA or ASIC interfacing across voltage domains.
What is the guaranteed linearity performance of the LTC2311IMSE-14#WPBF over temperature?
The LTC2311IMSE-14#WPBF guarantees ±2LSB integral nonlinearity (INL) over its full –40°C to +85°C operating range, with ±0.75LSB typical performance at 25°C. This specification is explicitly stated in the Electrical Characteristics table under "INL Integral Linearity Error" with the "l" symbol denoting full-temperature-range applicability.
How does the LTC2311IMSE-14#WPBF achieve low power consumption in inactive periods?
The LTC2311IMSE-14#WPBF offers nap mode (≤3.5mA) and sleep mode (≤0.5µW at 5V), activated via CNV timing control. Sleep mode reduces total supply current to sub-microamp levels while preserving configuration - enabling rapid wake-up for burst-mode sampling in battery-powered diagnostic tools and remote sensors.
LTC2311IMSE-14#WPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TFSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 14
- Sampling Rate (Per Second):
- 5M
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- LVDS - Serial, SPI
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 3.13V ~ 3.47V, 4.75V ~ 5.25V
- Voltage - Supply, Digital:
- 3.13V ~ 3.47V, 4.75V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 16-MSOP-EP
- Mounting Type:
- Surface Mount
- Grade:
- Automotive
- Qualification:
- AEC-Q100
LTC2311IMSE-14#WPBF FAQ
1.How can I place an order for LTC2311IMSE-14#WPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2311IMSE-14#WPBF 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 LTC2311IMSE-14#WPBF reliable?
The price and inventory of LTC2311IMSE-14#WPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2311IMSE-14#WPBF is usually 5 days.
3.What payment methods are accepted for LTC2311IMSE-14#WPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2311IMSE-14#WPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2311IMSE-14#WPBF?
LTC2311IMSE-14#WPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2311IMSE-14#WPBF 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 LTC2311IMSE-14#WPBF?
For technical support, including LTC2311IMSE-14#WPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2311IMSE-14#WPBF requirements.
6.How does Aetrix verify that LTC2311IMSE-14#WPBF is sourced from the original manufacturer or authorized distributors?
All LTC2311IMSE-14#WPBF 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 LTC2311IMSE-14#WPBF meets industry standards.
7.What is the process for return or replacement of LTC2311IMSE-14#WPBF?
All LTC2311IMSE-14#WPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2311IMSE-14#WPBF, 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 LTC2311IMSE-14#WPBF part is unused and in its original packaging.
Return procedure for LTC2311IMSE-14#WPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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