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Analog Devices Inc. LTC2263IUJ-14#PBF
- Part No.:
- LTC2263IUJ-14#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
LTC2263IUJ-14#PBF.pdf
- Description:
- IC ADC 14BIT PIPELINED 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,216
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Product details
Overview
LTC2263IUJ-14#PBF from Analog Devices (formerly Linear Technology) is a 14-bit, dual-channel, simultaneous-sampling analog-to-digital converter optimized for 25Msps operation in wideband, low-power signal acquisition systems. It delivers 73.4dB SNR and 90dB SFDR at 70MHz input frequency, features ultralow 0.15psRMS jitter, ±1LSB INL (typ), and operates from a single 1.8V supply. It serves as the front-end digitizer in portable medical ultrasound and multichannel data acquisition systems requiring high dynamic range and thermal stability over –40°C to +85°C.
For engineers reviewing the LTC2263IUJ-14#PBF datasheet, LTC2263IUJ-14#PBF pinout, LTC2263IUJ-14#PBF application, or LTC2263IUJ-14#PBF equivalent, this page provides verified specifications, validated LVDS serial output timing, confirmed QFN-40 package mapping, functional pin roles, and real-world use cases in undersampled IF receivers and precision instrumentation.
Technical Context
The LTC2263IUJ-14#PBF integrates two independent 14-bit ADC cores with shared PLL-based clock conditioning and a dual-channel LVDS serializer. Its sample-and-hold supports 800MHz full-power bandwidth and enables undersampling of IF signals up to 140MHz while maintaining 73.4dB SNR at 25Msps sampling rate.
It supports both internal and external reference modes via the SENSE pin, offers programmable LVDS output current (1.75mA/3.5mA), selectable 1- or 2-lane serialization per channel, and includes SPI-configurable sleep/nap modes reducing power to 1mW and 60mW respectively - all within a thermally enhanced 6mm × 6mm QFN package with exposed ground pad.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit with no missing codes over temperature - guarantees monotonicity and full code coverage in closed-loop control and spectral analysis. |
| Sampling Rate | 25Msps maximum - defines Nyquist bandwidth of 12.5MHz for baseband applications or enables 2nd/3rd harmonic undersampling of IF signals. |
| SNR @ 70MHz | 73.4dBFS (typ) - enables >12-bit effective resolution for RF receiver I/Q demodulation at cellular and SDR IF frequencies. |
| SFDR @ 70MHz | 90dBFS (2nd/3rd harmonic) - suppresses spurious tones critical for multi-tone communication standards like LTE and WLAN. |
| Total Power | 94mW at 25Msps, 2-lane, 1.75mA mode - allows battery-powered portable imaging and handheld test equipment with thermal budget headroom. |
| Input Bandwidth | 800MHz full-power - supports direct sampling of L-band radar and broadband spectrum analyzers without external amplification. |
| Jitter | 0.15psRMS aperture jitter - limits SNR degradation to <0.1dB at 70MHz input, enabling clean undersampling without external jitter cleaners. |
Pinout & Package
Package: 40-lead (6mm × 6mm) plastic QFN with exposed thermal pad (Pin 41 = GND). Requires soldering of exposed pad to PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN1+, AIN1– | Channel 1 differential analog input | Accepts 1VP-P to 2VP-P differential signal; common-mode bias provided by VCM1 (Pin 3). |
| AIN2+, AIN2– | Channel 2 differential analog input | Independent second channel with identical AC/DC specs; biased by VCM2 (Pin 8). |
| ENC+, ENC– | Differential encode clock input | Accepts LVDS, PECL, TTL, or CMOS; internal duty cycle stabilizer maintains performance across 20%–80% duty cycles. |
| OUT1A+/–, OUT1B+/– | Channel 1 LVDS serialized data outputs | In 2-lane mode: OUT1A carries odd bits, OUT1B carries even bits; in 1-lane mode only OUT1A active. |
| OUT2A+/–, OUT2B+/– | Channel 2 LVDS serialized data outputs | Same lane configuration as Channel 1; enables time-aligned dual-channel capture for beamforming or phase-coherent sensing. |
| DCO+, DCO– | Data clock output | Source-synchronous LVDS clock aligned to serialized data edges; used for FPGA/CPLD capture timing. |
| FR+, FR– | Frame start output | Differential pulse marking start of each conversion frame; period equals 2× encode clock in 2-lane mode. |
| SENSE | Reference and input range programming | Setting voltage (0.625V–1.3V) selects ±0.8×VSENSE input range; simplifies gain calibration in variable-range systems. |
| PAR/SER | Programming mode select | Ground = serial SPI interface (CS/SCK/SDI/SDO); VDD = parallel logic control (CS/SCK/SDI/SDO as GPIO). |
| VDD (Pins 11,12,39,40) | Analog supply | Single 1.8V ±0.1V rail powers ADC cores, S/H, and reference; requires local 0.1µF ceramic bypassing. |
| OVDD (Pin 26) | Digital output supply | Separate 1.8V rail powers LVDS drivers; decoupled with 0.1µF capacitor to minimize digital noise coupling. |
| GND (Pins 18,33,37,41) | Analog ground | Exposed pad (Pin 41) must be soldered to solid ground plane; multiple vias required for low-inductance return path. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow 0.15psRMS jitter | Enables clean undersampling of 70MHz+ IF signals without external clock cleaning, reducing BOM count and board area. |
| Serial LVDS outputs (1- or 2-lane) | Reduces interface pin count by >50% vs parallel CMOS; supports FPGA capture with minimal trace routing and EMI. |
| Programmable input range (1–2VP-P) | Allows direct connection to diverse signal sources (RF mixers, op-amp chains, sensors) without external gain switching. |
| Internal clock duty cycle stabilizer | Eliminates need for external clock conditioning circuits when using asymmetric clocks (e.g., from PLLs or microcontrollers). |
| Integrated 1.25V reference with ±25ppm/°C drift | Provides stable full-scale reference across industrial temperature range; eliminates external reference IC and associated layout complexity. |
| Sleep (1mW) and Nap (60mW) power modes | Supports rapid wake-up in battery-operated portable instruments while meeting strict average power budgets. |
Applications
| Portable Medical Ultrasound | Software Defined Radio (SDR) |
|---|---|
|
Use Scenario: Digitizing echo return signals from phased-array transducers in handheld ultrasound probes. IC Role / Device Role / Timing Role: Dual-channel simultaneous sampling ADC capturing I/Q baseband data at 25Msps with matched gain/offset for beamforming. Use Value: 73.4dB SNR preserves tissue contrast resolution; 90dB SFDR prevents harmonic artifacts from masking low-amplitude echoes. |
Use Scenario: Direct IF sampling in compact SDR transceivers operating in 70–250MHz bands. IC Role / Device Role / Timing Role: Front-end digitizer converting downconverted RF signals with precise channel-to-channel timing alignment. Use Value: 0.15psRMS jitter ensures <0.1dB SNR loss at 70MHz; 800MHz input bandwidth avoids external amplification before ADC. |
| Multichannel Data Acquisition | Nondestructive Testing (NDT) |
|
Use Scenario: High-fidelity vibration and acoustic emission monitoring across 16+ sensor channels in industrial condition monitoring systems. IC Role / Device Role / Timing Role: Dual ADC per module providing synchronized sampling for time-of-flight and phase-difference analysis. Use Value: ±1LSB INL (typ) ensures accurate amplitude measurement across channels; 94mW total power enables dense channel packing. |
Use Scenario: Capturing ultrasonic pulse-echo waveforms in pipeline inspection tools detecting cracks and corrosion. IC Role / Device Role / Timing Role: High-speed digitizer acquiring transient reflections with sub-nanosecond timing fidelity. Use Value: 73.4dB SNR resolves weak echo returns buried in noise; 25Msps sampling captures >12MHz bandwidth for fine defect resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, 14-bit ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9253BCPZ-25 | 25Msps, 14-bit, dual-channel; uses CMOS parallel outputs (not LVDS); higher 125mW power; no internal duty cycle stabilizer. | Requires more PCB routing and termination; less suitable for high-density or EMI-sensitive layouts where LVDS serialization is preferred. | Select when legacy CMOS FPGA interfaces exist and jitter tolerance >0.3psRMS is acceptable. |
| LTC2264IUJ-14#PBF | 40Msps version in identical QFN-40 package; same pinout, register map, and feature set; 113mW power at 40Msps. | Direct upgrade path for systems needing higher Nyquist bandwidth (20MHz) or improved SFDR at lower input frequencies. | Select when system sampling rate must exceed 25Msps while retaining identical layout, firmware, and power delivery design. |
Compared with LTC2263IUJ-14#PBF, AD9253BCPZ-25 trades LVDS serialization and jitter performance for simpler interface logic, while LTC2264IUJ-14#PBF offers a drop-in speed upgrade with zero layout change - making the latter ideal for scalable platform designs.
Availability
LTC2263IUJ-14#PBF is available at Aetrix Electronics and suitable for portable medical imaging, software-defined radio development, and multichannel data acquisition systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC2263IUJ-14#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, serving communications, industrial, automotive, and healthcare markets.
The LTC2263IUJ-14#PBF belongs to the LTC226x family of low-power, high-SFDR dual ADCs designed specifically for undersampled IF receivers, portable instrumentation, and space-constrained signal acquisition where thermal efficiency and jitter-limited SNR are critical.
FAQ
What is the guaranteed operating temperature range for the LTC2263IUJ-14#PBF?
The LTC2263IUJ-14#PBF is rated for industrial operation from –40°C to +85°C (I-grade), as confirmed by Absolute Maximum Ratings and Converter Characteristics tables in the official datasheet. All DC and dynamic specifications - including ±1LSB INL, 73.4dB SNR, and 90dB SFDR - are specified over this full range.
Does the LTC2263IUJ-14#PBF support external reference configuration?
Yes, the LTC2263IUJ-14#PBF supports external reference mode via the SENSE pin. Applying a voltage between 0.625V and 1.3V to SENSE sets the input range to ±0.8 × VSENSE, enabling flexible full-scale adjustment without modifying hardware. Internal reference remains active unless explicitly disabled by external circuitry.
How many LVDS data lanes does the LTC2263IUJ-14#PBF support per channel?
The LTC2263IUJ-14#PBF supports both 1-lane and 2-lane LVDS serialization per channel, selected via the CS pin in parallel programming mode. In 2-lane mode, OUT1A+/– carries odd bits and OUT1B+/– carries even bits of the 14-bit word - halving the serial data rate and easing FPGA timing closure.
Is the LTC2263IUJ-14#PBF pin-compatible with other members of the LTC226x-14 family?
Yes, the LTC2263IUJ-14#PBF shares identical pinout, package (QFN-40), and register map with LTC2264IUJ-14#PBF and LTC2265IUJ-14#PBF. This allows direct substitution in existing layouts when upgrading sampling rate from 25Msps → 40Msps → 65Msps without PCB revision.
What power-saving modes are available on the LTC2263IUJ-14#PBF?
The LTC2263IUJ-14#PBF offers two low-power states: Nap mode (60mW) and Sleep mode (1mW). Both are controlled via SPI register writes or parallel logic inputs. Sleep mode disables ADC cores and serializers completely, while Nap mode retains bias settings and enables sub-µs wake-up - ideal for burst-mode acquisition in battery-powered devices.
LTC2263IUJ-14#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 40-WFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 14
- Sampling Rate (Per Second):
- 25M
- Number of Inputs:
- 2
- Input Type:
- Differential
- Data Interface:
- LVDS - Serial
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 2
- Architecture:
- Pipelined
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 1.7V ~ 1.9V
- Voltage - Supply, Digital:
- 1.7V ~ 1.9V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 40-QFN (6x6)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2263IUJ-14#PBF FAQ
1.How can I place an order for LTC2263IUJ-14#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2263IUJ-14#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 LTC2263IUJ-14#PBF reliable?
The price and inventory of LTC2263IUJ-14#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2263IUJ-14#PBF is usually 5 days.
3.What payment methods are accepted for LTC2263IUJ-14#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2263IUJ-14#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2263IUJ-14#PBF?
LTC2263IUJ-14#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2263IUJ-14#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 LTC2263IUJ-14#PBF?
For technical support, including LTC2263IUJ-14#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2263IUJ-14#PBF requirements.
6.How does Aetrix verify that LTC2263IUJ-14#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2263IUJ-14#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 LTC2263IUJ-14#PBF meets industry standards.
7.What is the process for return or replacement of LTC2263IUJ-14#PBF?
All LTC2263IUJ-14#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2263IUJ-14#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 LTC2263IUJ-14#PBF part is unused and in its original packaging.
Return procedure for LTC2263IUJ-14#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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