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Analog Devices Inc. LTC2264CUJ-12#PBF
- Part No.:
- LTC2264CUJ-12#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
LTC2264CUJ-12#PBF.pdf
- Description:
- IC ADC 12BIT PIPELINED 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:224
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Product details
Overview
LTC2264CUJ-12#PBF from Analog Devices (formerly Linear Technology) is a 12-bit, dual-channel, simultaneous-sampling analog-to-digital converter optimized for high-frequency communications signal digitization at 40 Msps. It delivers 71 dB SNR and 90 dB SFDR with ultralow 0.15 psRMS aperture jitter, enabling undersampling of IF signals up to 140 MHz in cellular base stations and software-defined radios.
For engineers reviewing the LTC2264CUJ-12#PBF datasheet, LTC2264CUJ-12#PBF pinout, LTC2264CUJ-12#PBF application, or LTC2264CUJ-12#PBF equivalent, key selection criteria include its 40 Msps sampling rate, serial LVDS output interface (1- or 2-lane), 1.8 V single-supply operation, 800 MHz full-power bandwidth, and support for internal/external reference configurations.
Technical Context
The LTC2264CUJ-12#PBF integrates two independent 12-bit ADC cores with shared PLL-based clock conditioning and a digital serializer driving differential LVDS outputs. Its sample-and-hold front-end features 800 MHz full-power bandwidth and ±0.3 LSB typical INL across temperature.
Dual-channel synchronization is maintained via simultaneous sampling architecture with integrated duty-cycle stabilizer on ENC+/ENC– inputs, supporting sine wave, PECL, LVDS, TTL, or CMOS clock sources. Configuration is handled via SPI port or parallel logic pins (CS/SCK/SDI), with optional internal 100 Ω LVDS termination enabled via SDO.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with no missing codes over temperature - guarantees monotonicity and full code coverage in precision acquisition systems. |
| Sampling Rate | 40 Msps - fixed speed grade for LTC2264-12 family; enables real-time digitization of wideband IF signals without interpolation. |
| SNR / SFDR | 71 dB / 90 dB at 70 MHz input - supports high-fidelity demodulation in LTE/5G receivers and radar front-ends. |
| Aperture Jitter | 0.15 psRMS - minimizes noise floor degradation during undersampling of RF/IF bands above 100 MHz. |
| Power Consumption | 112 mW total at 40 Msps, 2-lane LVDS - enables thermally constrained portable medical imaging and multichannel DAQ designs. |
| Analog Supply | Single 1.8 V (VDD = 1.7 V to 1.9 V) - simplifies power delivery and reduces board-level DC/DC count versus dual-supply ADCs. |
| Input Range | Selectable 1 VP-P to 2 VP-P differential - matches common RF mixer output levels and eases anti-alias filter design. |
Pinout & Package
40-lead (6 mm × 6 mm) plastic QFN package 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 1–2 VP-P differential signal; common-mode bias provided by VCM1. |
| AIN2+, AIN2– | Channel 2 differential analog input | Independent, simultaneously sampled path; biased by VCM2. |
| ENC+, ENC– | Differential encode clock input | Triggers conversion on both edges; supports duty-cycle stabilization for non-50% clocks. |
| OUT1A+/–, OUT1B+/– | Channel 1 serialized LVDS data outputs | 1- or 2-lane mode configurable; 100 Ω internal termination selectable via SDO. |
| OUT2A+/–, OUT2B+/– | Channel 2 serialized LVDS data outputs | Matched timing to OUT1 outputs; supports frame-aligned dual-channel streaming. |
| FR+, FR– | LVDS frame clock output | Indicates start of new sample frame; period equals twice ENC period in 2-lane mode. |
| DCO+, DCO– | LVDS data clock output | Synchronizes serialized data; cycle-to-cycle jitter ≤60 psP-P at 1 ns bit period. |
| PAR/SER | Programming mode select | Ground = SPI control; VDD = parallel logic control (CS/SCK/SDI/SDO as GPIO). |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous dual-channel sampling | Eliminates inter-channel skew for coherent I/Q or phased-array applications requiring <1 ps timing alignment. |
| Serial LVDS interface (1-/2-lane) | Reduces interface pin count by >50% vs parallel CMOS; supports trace lengths up to 20 cm at 1 Gbps. |
| Internal clock duty-cycle stabilizer | Enables use of low-cost crystal oscillators or FPGA clocks with 20–80% duty cycle without SNR penalty. |
| Configurable input range & reference | Supports internal (±0.5 V / ±1 V) or external (0.625–1.3 V) reference via SENSE pin - adapts to diverse signal chain gain plans. |
| Low-power shutdown & nap modes | Reduces power to 1 mW (sleep) or 60 mW (nap) - extends battery life in portable test equipment and field-deployed sensors. |
Applications
| Cellular Base Station Receiver | Software Defined Radio (SDR) |
|---|---|
|
Use Scenario: Digitizing dual-path I/Q signals from RF downconverters in LTE/5G macrocell and small-cell base stations. IC Role / Device Role / Timing Role: Simultaneous-sampling dual ADC capturing 20+ MHz instantaneous bandwidth per channel at 40 Msps with <1 ps inter-channel skew. Use Value: Enables direct IF sampling at 70–140 MHz with 71 dB SNR, eliminating analog quadrature correction and reducing component count. |
Use Scenario: High-dynamic-range signal capture in reconfigurable radio platforms supporting multiple waveforms (e.g., WiFi, Bluetooth, Zigbee). IC Role / Device Role / Timing Role: Dual-channel ADC providing synchronized I/Q data streams with programmable input range and LVDS serialization for FPGA interfacing. Use Value: 90 dB SFDR prevents spurious mixing artifacts during multi-standard coexistence testing and spectrum monitoring. |
| Portable Medical Ultrasound | Multichannel Data Acquisition |
|
Use Scenario: Beamforming front-end in handheld ultrasound systems requiring compact, low-power analog signal digitization. IC Role / Device Role / Timing Role: Low-jitter (0.15 psRMS) dual ADC sampling echo return signals at 40 Msps with 800 MHz input bandwidth. Use Value: Supports 15 MHz center-frequency transducers with high axial resolution; 112 mW total power enables battery-operated operation. |
Use Scenario: High-channel-count vibration analysis or structural health monitoring using synchronized sensor arrays. IC Role / Device Role / Timing Role: Dual ADC providing time-aligned samples across multiple LTC2264CUJ-12#PBF devices via daisy-chained FR/DCO signals. Use Value: ±0.3 LSB INL and matched gain/offset ensure <0.01% amplitude error across 16+ channels in calibrated measurement systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, 12-bit ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9233BCPZ-40 | 40 Msps, 12-bit, single-channel; requires two devices for dual-channel operation; uses CMOS outputs (not LVDS). | Lacks native simultaneous sampling and LVDS serialization; increases PCB area and FPGA I/O count. | Choose when CMOS interface is preferred and inter-channel skew tolerance >100 ps is acceptable. |
| LTC2265CUJ-12#PBF | 65 Msps version in identical 40-pin QFN package; same pinout, register map, and feature set. | Higher sampling rate enables wider instantaneous bandwidth (e.g., 30 MHz vs 20 MHz at Nyquist) but consumes 167 mW. | Direct upgrade path if system requires >40 Msps; no layout or firmware changes needed beyond clock and timing adjustments. |
Compared with AD9233BCPZ-40, LTC2264CUJ-12#PBF provides true simultaneous sampling and LVDS serialization in one device, reducing system complexity. Compared with LTC2265CUJ-12#PBF, it trades 25 Msps headroom for 45 mW lower power - ideal for thermally constrained or battery-powered 40 Msps applications.
Availability
LTC2264CUJ-12#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 obsolescence management, and guaranteed lot traceability.
Supply support for LTC2264CUJ-12#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 LTC2264CUJ-12#PBF belongs to the LTC226x family of low-power, high-speed dual ADCs designed specifically for demanding communications and instrumentation applications where dynamic range, timing precision, and power efficiency are critical.
FAQ
What is the maximum input frequency supported by the LTC2264CUJ-12#PBF?
The LTC2264CUJ-12#PBF features an 800 MHz full-power bandwidth (–3 dB point), allowing accurate digitization of analog inputs up to 140 MHz while maintaining 70.5 dB SNR and 79 dB SFDR. This makes the LTC2264CUJ-12#PBF suitable for undersampling IF signals in radio receivers without requiring bandpass filtering prior to the ADC.
Does the LTC2264CUJ-12#PBF support both internal and external voltage references?
Yes, the LTC2264CUJ-12#PBF supports flexible reference configuration via the SENSE pin: tying SENSE to VDD selects ±1 V input range with internal reference; grounding SENSE selects ±0.5 V range; applying 0.625–1.3 V to SENSE enables external reference operation. The LTC2264CUJ-12#PBF maintains ±0.3 LSB INL and 0.32 LSBRMS transition noise across all modes.
How does the serial LVDS interface of the LTC2264CUJ-12#PBF reduce system complexity?
The LTC2264CUJ-12#PBF serializes each channel's 12-bit output into 1- or 2-lane LVDS streams, reducing digital interface pins from 24 (parallel CMOS) to as few as 6 (2-lane + FR + DCO). This lowers FPGA I/O usage, eases PCB routing, improves signal integrity over longer traces, and eliminates timing skew between data bits - all while maintaining deterministic latency (6-cycle pipeline).
Can the LTC2264CUJ-12#PBF be used in systems requiring operation from –40°C to +85°C?
No - the LTC2264CUJ-12#PBF is specified for the commercial temperature range (0°C to +70°C). For industrial temperature operation (–40°C to +85°C), the correct part is LTC2264IUJ-12#PBF, which shares identical electrical specifications and pinout but is qualified across the extended range. Using LTC2264CUJ-12#PBF outside 0°C–70°C is not guaranteed.
What power-saving modes are available on the LTC2264CUJ-12#PBF?
The LTC2264CUJ-12#PBF offers two low-power states: Nap mode (60 mW) suspends analog circuitry while retaining register settings and enabling fast wake-up (<1 µs), and Sleep mode (1 mW) powers down nearly all circuitry except basic bias generation. Both modes are controlled via SPI or parallel logic (SDI pin in parallel mode), allowing dynamic power scaling in burst-mode acquisition systems.
LTC2264CUJ-12#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:
- 12
- 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-12#PBF FAQ
1.How can I place an order for LTC2264CUJ-12#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2264CUJ-12#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-12#PBF reliable?
The price and inventory of LTC2264CUJ-12#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-12#PBF is usually 5 days.
3.What payment methods are accepted for LTC2264CUJ-12#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2264CUJ-12#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2264CUJ-12#PBF?
LTC2264CUJ-12#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2264CUJ-12#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-12#PBF?
For technical support, including LTC2264CUJ-12#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2264CUJ-12#PBF requirements.
6.How does Aetrix verify that LTC2264CUJ-12#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2264CUJ-12#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-12#PBF meets industry standards.
7.What is the process for return or replacement of LTC2264CUJ-12#PBF?
All LTC2264CUJ-12#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2264CUJ-12#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-12#PBF part is unused and in its original packaging.
Return procedure for LTC2264CUJ-12#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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