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Analog Devices Inc. LTC2264CUJ-14#PBF
- Part No.:
- LTC2264CUJ-14#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
LTC2264CUJ-14#PBF.pdf
- Description:
- IC ADC 14BIT PIPELINED 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,602
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Product details
Overview
LTC2264CUJ-14#PBF from Analog Devices (formerly Linear Technology) is a 14-bit, dual-channel, simultaneous-sampling analog-to-digital converter optimized for high-dynamic-range signal digitization at 40 Msps. It delivers 73.5 dB SNR and 90 dB SFDR at 70 MHz input, with ultralow 0.15 psRMS aperture jitter, enabling high-fidelity undersampling in IF receiver chains for wireless infrastructure.
For engineers reviewing the LTC2264CUJ-14#PBF datasheet, LTC2264CUJ-14#PBF pinout, LTC2264CUJ-14#PBF application, or LTC2264CUJ-14#PBF equivalent, this page provides verified specifications, QFN-40 package layout, LVDS serialization modes, power consumption across 1-/2-lane configurations, and validated alternatives for multichannel data acquisition and SDR front ends.
Technical Context
The LTC2264CUJ-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 features 800 MHz full-power bandwidth and supports differential or single-ended encode inputs (PECL/LVDS/TTL/CMOS), with internal duty cycle stabilization for robust operation across wide clock duty cycles.
Digital interface includes SPI-configurable mode control and parallel programming via CS/SCK/SDI pins. Output serialization supports 1-lane (14-bit) or 2-lane (7-bit per lane) LVDS with selectable 1.75 mA or 3.5 mA output current, internal 100 Ω termination, and programmable common-mode voltage (1.125–1.375 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit with no missing codes over temperature - guarantees monotonicity and full code coverage in precision measurement systems. |
| Sampling Rate | 40 Msps - fixed speed grade for LTC2264-14; enables Nyquist sampling of signals up to 20 MHz or undersampling of IF bands up to 140 MHz. |
| SNR / SFDR | 73.5 dB SNR and 90 dB SFDR at 70 MHz input - ensures high fidelity in cellular base station receivers and spectrum analyzers. |
| Aperture Jitter | 0.15 psRMS - minimizes noise floor degradation during high-frequency undersampling, critical for >100 MHz IF digitization. |
| Power Consumption | 113 mW total at 40 Msps, 2-lane, 1.75 mA mode - enables thermally constrained portable medical imaging and battery-assisted test equipment. |
| Analog Supply | Single 1.8 V (VDD = 1.7–1.9 V) - simplifies power delivery and reduces board-level noise coupling versus dual-supply ADCs. |
| Input Range | Selectable 1 VP-P to 2 VP-P differential - accommodates varying signal chain gain stages without external scaling. |
Pinout & Package
Package: 40-lead (6 mm × 6 mm) plastic QFN (UJ), exposed pad (Pin 41) soldered to PCB ground for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN1+, AIN1– | Channel 1 differential analog input | Accepts ±0.5 V to ±1 V input range; requires matched 50 Ω trace routing and 0.1 µF local bypassing for optimal AC performance. |
| ENC+, ENC– | Differential encode clock input | Triggers conversion on both edges; supports sine wave, LVDS, or CMOS drive; internal duty cycle stabilizer relaxes clock source requirements. |
| OUT1A+/OUT1A–, OUT2A+/OUT2A– | Primary LVDS serial data outputs (1-lane mode) | Carry serialized 14-bit samples per channel at 560 Mbps (40 Msps × 14 bits); require 100 Ω differential termination at receiver. |
| DCO+, DCO– | Data clock output | Source-synchronous LVDS clock aligned to serialized data; used for timing recovery in FPGA or ASIC capture logic. |
| FR+, FR– | Frame start output | Indicates start of new sample frame; toggles at 40 MHz in 1-lane mode, enabling deterministic multi-ADC synchronization. |
| PAR/SER, CS, SCK, SDI | Mode configuration interface | Parallel programming (PAR/SER = VDD) allows hardware-selectable LVDS current, serialization mode, and power states without SPI overhead. |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous dual-channel sampling | Guarantees precise inter-channel phase alignment (<1 ps skew), essential for I/Q demodulation and beamforming calibration. |
| Serial LVDS output (1- or 2-lane) | Reduces interface pin count by >60% vs parallel CMOS; eliminates timing skew between channels in high-speed PCB layouts. |
| Internal clock duty cycle stabilizer | Enables use of low-cost crystal oscillators or FPGA clocks with 30–70% duty cycle, avoiding external duty cycle correction circuitry. |
| Shutdown and Nap modes | Reduces power to 1 mW (shutdown) or 60 mW (Nap), supporting dynamic power scaling in battery-powered portable ultrasound systems. |
| Programmable input range & reference | SENSE pin selects ±0.5 V, ±1 V, or user-defined ±0.8×VSENSE ranges (0.625–1.3 V), enabling seamless integration with diverse front-end amplifiers. |
Applications
| Cellular Base Station Receiver | Software Defined Radio (SDR) |
|---|---|
|
Use Scenario: Digitizing 70–90 MHz IF signals from RF downconverters in LTE/FDD-TDD macrocells. IC Role / Device Role / Timing Role: Dual-channel ADC capturing synchronized I/Q data streams with <1 ps inter-channel skew for digital predistortion feedback. Use Value: 90 dB SFDR prevents adjacent-channel interference masking weak signals; 0.15 psRMS jitter maintains EVM <0.8% at 20 MHz LTE bandwidth. |
Use Scenario: Reconfigurable front end for multi-band cognitive radio platforms operating from HF to 2 GHz. IC Role / Device Role / Timing Role: High-linearity ADC supporting real-time frequency agility via undersampling of tunable IF bands. Use Value: 800 MHz full-power bandwidth and 73.5 dB SNR enable direct digitization of 140 MHz IF without image-reject filtering. |
| Portable Medical Ultrasound | Multichannel Data Acquisition |
|
Use Scenario: Beamformed echo digitization in handheld ultrasound probes with 64+ element arrays. IC Role / Device Role / Timing Role: Dual ADC per probe module acquiring time-aligned RF echoes; low 113 mW power enables extended battery life. Use Value: Simultaneous sampling eliminates phase-induced artifacts in synthetic aperture processing; 14-bit resolution supports >80 dB dynamic range in tissue imaging. |
Use Scenario: High-accuracy vibration monitoring in industrial predictive maintenance systems with 16-channel sensor nodes. IC Role / Device Role / Timing Role: Paired LTC2264CUJ-14#PBF devices digitizing differential accelerometer outputs with synchronized timestamps. Use Value: ±1 LSB INL and ±0.3 LSB DNL ensure sub-milligal accuracy; LVDS serialization simplifies routing across dense 4-layer PCBs. |
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 |
|---|---|---|---|
| AD9257BCPZ-40 | 40 Msps, 14-bit, dual-channel; 72.5 dB SNR, 88 dB SFDR; 1.8 V supply; parallel CMOS outputs only. | Lacks LVDS serialization and internal clock stabilizer; requires external FPGA capture logic and clock cleanup. | Choose when board space permits wider parallel bus and system clock quality is assured. |
| LTC2263CUJ-14#PBF | 25 Msps speed grade; identical pinout, architecture, and feature set; 113 mW → 94 mW power at 25 Msps. | Lower sampling rate limits usable IF bandwidth to ~125 MHz; suitable for cost-sensitive, lower-bandwidth SDR or audio test gear. | Choose for reduced power and relaxed timing closure where 25 Msps meets system Nyquist requirements. |
Compared with AD9257BCPZ-40 and LTC2263CUJ-14#PBF, the LTC2264CUJ-14#PBF uniquely balances 40 Msps throughput, LVDS serialization, and ultralow jitter-making it optimal for compact, thermally constrained IF receivers requiring minimal FPGA I/O resources and high spectral purity.
Availability
LTC2264CUJ-14#PBF is available at Aetrix Electronics and suitable for cellular infrastructure, portable medical imaging, and multichannel data acquisition systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for LTC2264CUJ-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 acquired Linear Technology in 2017 and maintains its high-performance signal chain portfolio, emphasizing precision, speed, and power efficiency for demanding analog applications.
The LTC2264CUJ-14#PBF belongs to the LTC226x family of low-power, dual-channel, high-SFDR ADCs designed specifically for communications infrastructure, instrumentation, and medical imaging where simultaneous sampling, low jitter, and compact serialization are critical.
FAQ
What is the maximum input frequency supported by the LTC2264CUJ-14#PBF?
The LTC2264CUJ-14#PBF has an 800 MHz full-power bandwidth, allowing accurate digitization of analog inputs up to that frequency. At 40 Msps sampling, it supports undersampling of IF signals up to 140 MHz while maintaining 90 dB SFDR and 73.5 dB SNR performance, as verified in the datasheet's typical performance plots for fIN = 139 MHz.
Does the LTC2264CUJ-14#PBF support internal or external voltage reference?
Yes, the LTC2264CUJ-14#PBF supports both. The SENSE pin configures reference mode: tied to VDD for ±1 V input range with internal 1.25 V reference; grounded for ±0.5 V range; or biased with 0.625–1.3 V external voltage for ±0.8×VSENSE range. Internal reference drift is ±25 ppm/°C, and external reference mode enables tighter system-level gain matching.
How does the LVDS serialization mode affect the interface timing of the LTC2264CUJ-14#PBF?
In 2-lane mode, the LTC2264CUJ-14#PBF outputs 7 bits per lane per sample at 280 Mbps per lane (40 Msps × 7 bits), reducing timing margin demands. In 1-lane mode, it outputs all 14 bits serially at 560 Mbps, requiring stricter PCB impedance control and shorter trace lengths. Frame (FR) and data clock (DCO) remain synchronous in both modes, with tFRAME = 0.35–0.65 × tSER.
Can the LTC2264CUJ-14#PBF be used with a single-ended encode clock?
Yes. The ENC– pin can be tied to GND to enable single-ended encode mode. In this configuration, ENC+ accepts TTL, CMOS, or LVDS logic levels (0.2–3.6 V), with VIH ≥ 1.2 V and VIL ≤ 0.6 V at VDD = 1.8 V. Performance remains identical to differential mode, though common-mode noise rejection is reduced.
What is the pipeline latency of the LTC2264CUJ-14#PBF, and how does it impact system synchronization?
The LTC2264CUJ-14#PBF has a fixed 6-cycle pipeline latency from encode edge to valid LVDS data output. This deterministic delay enables precise time-of-arrival alignment across multiple synchronized LTC2264CUJ-14#PBF devices in phased-array or multi-board acquisition systems, provided frame (FR) signals are aligned and clock distribution skew is minimized.
LTC2264CUJ-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):
- 40M
- 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:
- 0°C ~ 70°C
- Supplier Device Package:
- 40-QFN (6x6)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2264CUJ-14#PBF FAQ
1.How can I place an order for LTC2264CUJ-14#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2264CUJ-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 LTC2264CUJ-14#PBF reliable?
The price and inventory of LTC2264CUJ-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 LTC2264CUJ-14#PBF is usually 5 days.
3.What payment methods are accepted for LTC2264CUJ-14#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2264CUJ-14#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2264CUJ-14#PBF?
LTC2264CUJ-14#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2264CUJ-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 LTC2264CUJ-14#PBF?
For technical support, including LTC2264CUJ-14#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2264CUJ-14#PBF requirements.
6.How does Aetrix verify that LTC2264CUJ-14#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2264CUJ-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 LTC2264CUJ-14#PBF meets industry standards.
7.What is the process for return or replacement of LTC2264CUJ-14#PBF?
All LTC2264CUJ-14#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2264CUJ-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 LTC2264CUJ-14#PBF part is unused and in its original packaging.
Return procedure for LTC2264CUJ-14#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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