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Analog Devices Inc. LTC2264IUJ-12#PBF
- Part No.:
- LTC2264IUJ-12#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
LTC2264IUJ-12#PBF.pdf
- Description:
- IC ADC 12BIT PIPELINED 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,378
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Product details
Overview
LTC2264IUJ-12#PBF from Analog Devices (formerly Linear Technology) is a 12-bit, dual-channel, simultaneous-sampling analog-to-digital converter optimized for high-frequency signal digitization in communications systems. It delivers 71dB SNR, 90dB SFDR, and ultralow 0.15psRMS aperture jitter at its 40Msps sampling rate, enabling undersampling of IF signals up to 140MHz with high fidelity. Its serial LVDS outputs, 1.8V single-supply operation, and 40-pin QFN package make it suitable for space-constrained, low-power base station receivers and portable SDR platforms.
For engineers reviewing the LTC2264IUJ-12#PBF datasheet, LTC2264IUJ-12#PBF pinout, LTC2264IUJ-12#PBF application, or LTC2264IUJ-12#PBF equivalent, key selection criteria include its guaranteed ±0.3LSB INL over temperature, dual-channel timing matching, LVDS serialization mode flexibility (1-lane/2-lane), and support for internal/external reference configurations - all critical for multichannel coherent sampling and spectral purity in wideband RF front ends.
Technical Context
The LTC2264IUJ-12#PBF integrates two independent 12-bit ADC cores sharing a common encode clock, with simultaneous sampling ensured by matched sample-and-hold paths and pipeline latency of exactly 6 cycles. Its on-chip PLL and duty cycle stabilizer enable full-speed operation across wide input clock duty cycles (2%–98%), while the 800MHz full-power bandwidth supports direct RF sampling of cellular and WiMAX bands.
Digital interface logic operates at 1.8V OVDD and supports both serial SPI configuration (via CS/SCK/SDI/SDO) and parallel pin-strapped mode selection (PAR/SER). Output drivers provide programmable 1.75mA or 3.5mA LVDS current, optional 100Ω on-die termination, and configurable frame/data clock polarity - ensuring robust signal integrity across PCB traces up to 20cm.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with no missing codes over –40°C to +85°C - guarantees monotonicity and deterministic code transitions in closed-loop control or real-time spectrum analysis. |
| Sampling Rate | 40Msps maximum - enables Nyquist sampling of baseband signals up to 20MHz or undersampling of IF signals up to 140MHz with alias-free reconstruction. |
| SNR / SFDR | 71dB SNR and 90dB SFDR at 70MHz input - ensures >11.8 effective bits for high-fidelity demodulation in LTE and 5G NR receiver chains. |
| Aperture Jitter | 0.15psRMS - limits sampling uncertainty to <0.01 LSB at 100MHz input, preserving ENOB in wideband applications. |
| Power Consumption | 112mW total at 40Msps (2-lane, 1.75mA mode) - allows thermal design for dense multichannel arrays without forced air cooling. |
| Analog Supply | Single 1.8V VDD (1.7V–1.9V) - simplifies power delivery and eliminates level-shifting between analog and digital domains. |
| Input Bandwidth | 800MHz full-power bandwidth - supports direct sampling of UMTS, LTE Band 7, and unlicensed 2.4GHz ISM signals without external amplification. |
Pinout & Package
Package: 40-lead (6mm × 6mm) plastic QFN with exposed pad (Pin 41 = GND), RoHS-compliant, moisture-sensitive level 3. Thermal resistance θJA = 32°C/W; exposed pad must be soldered to PCB ground for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN1+, AIN1– | Channel 1 differential analog input | Accepts 1VP-P to 2VP-P input range; requires matched 50Ω source impedance and common-mode bias via VCM1. |
| ENC+, ENC– | Differential encode clock input | Triggers simultaneous sampling on rising/falling edges; supports PECL/LVDS/TTL/CMOS drive with internal duty cycle stabilization. |
| OUT1A+/–, OUT1B+/– | Channel 1 serialized LVDS data outputs | Deliver 12-/14-/16-bit data in 1-lane (bit-serial) or 2-lane (2-bit-parallel) mode; configurable output current and termination. |
| FR+, FR– | Frame clock output | Indicates start of new conversion frame; period equals 2× encode clock in 2-lane mode, enabling precise multi-ADC synchronization. |
| PAR/SER | Programming mode select | Ground = serial SPI control; VDD = parallel pin-strapped configuration - determines whether CS/SCK/SDI/SDO function as interface or mode pins. |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous dual-channel sampling | Guaranteed inter-channel skew <10ps and gain/offset matching (±0.2%FS gain, ±3mV offset) - essential for I/Q demodulation and beamforming calibration. |
| Configurable LVDS serialization | Runtime-selectable 1-lane or 2-lane output mode with programmable drive strength (1.75mA/3.5mA) - optimizes PCB routing density and EMI in compact layouts. |
| Internal clock duty cycle stabilizer | Enables full 40Msps performance with encode clocks having 2%–98% duty cycle - eliminates need for external clock conditioning in FPGA-driven systems. |
| Flexible reference architecture | Supports internal reference (±0.5V/±1V range) or external 0.625V–1.3V reference via SENSE pin - allows optimization of dynamic range for varying signal amplitudes. |
| Low-power sleep/nap modes | 1mW sleep mode and 60mW nap mode - enables rapid wake-up (<1µs) for burst-mode receivers while minimizing average system power. |
Applications
| Cellular Base Stations | Software Defined Radios |
|---|---|
Use Scenario: Digitizing dual-path receive signals in LTE FDD eNodeB remote radio heads with 20MHz channel bandwidth and 15kHz subcarrier spacing. IC Role / Device Role / Timing Role: Simultaneous-sampling dual ADC providing time-aligned I/Q data streams to FPGA-based digital downconverters with <10ps inter-channel skew. Use Value: 71dB SNR and 90dB SFDR preserve EVM <2.5% at 64-QAM, enabling compliant 2×2 MIMO operation within FCC spectral mask limits. | Use Scenario: Portable wideband receiver covering 100MHz–2.5GHz using direct RF sampling and FPGA-based real-time FFT processing. IC Role / Device Role / Timing Role: High-fidelity digitizer with 800MHz analog bandwidth and 0.15psRMS jitter, enabling clean undersampling of 1.9GHz PCS band without image-reject filtering. Use Value: Single 1.8V supply and 112mW power allow battery-powered operation for >4 hours; LVDS serialization reduces FPGA pin count by 50% vs parallel interface. |
| Portable Medical Imaging | Multichannel Data Acquisition |
Use Scenario: Ultrasound beamformer front end requiring synchronized sampling across 16–32 channels for phased-array echo processing. IC Role / Device Role / Timing Role: Dual ADC used in time-interleaved or channel-pair configurations, leveraging matched INL/DNL (±0.3LSB/±0.1LSB) for coherent summing. Use Value: Guaranteed no missing codes and <0.3LSBRMS transition noise ensure accurate tissue boundary detection in B-mode imaging with >120dB dynamic range. | Use Scenario: High-precision test equipment capturing transient waveforms from vibration sensors, strain gauges, and acoustic emitters across 8–16 channels. IC Role / Device Role / Timing Role: Precision digitizer with ±0.3LSB INL and ±0.1LSB DNL over temperature, supporting DC-coupled measurements with <12ppm/°C full-scale drift. Use Value: Internal reference stability (±25ppm/°C) and 1.8V single supply simplify calibration and reduce BOM cost versus discrete reference solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, 12-bit, medium-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9233BCPZ-40 | 40Msps, 12-bit, single-channel; LVDS output; 70dB SNR at 70MHz; requires external clock buffer and reference. | Not simultaneous dual-channel - needs two devices and careful layout for channel matching; higher system-level power (2×125mW). | Select when single-channel density or legacy ADI ecosystem compatibility outweighs need for intrinsic dual-channel coherence. |
| LTC2263IUJ-12#PBF | 25Msps version of same family; identical pinout, SPI interface, and LVDS architecture; 70.5dB SNR at 70MHz; 94mW total power. | Lower sampling rate limits usable bandwidth to 12.5MHz Nyquist or ~100MHz IF undersampling - suitable for narrowband IoT gateways or audio spectrum analyzers. | Select when system bandwidth requirements are ≤25Msps and lower power (94mW vs 112mW) is prioritized over IF agility. |
Compared with AD9233BCPZ-40 and LTC2263IUJ-12#PBF, the LTC2264IUJ-12#PBF uniquely delivers guaranteed simultaneous sampling, inter-channel matching, and integrated clock conditioning in a single 40-pin QFN - reducing PCB area, component count, and timing validation effort for coherent multichannel systems.
Availability
LTC2264IUJ-12#PBF is available at Aetrix Electronics and suitable for cellular infrastructure, software-defined radio development, and portable medical imaging systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LTC2264IUJ-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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving communications, industrial, automotive, and healthcare markets.
The LTC2264IUJ-12#PBF belongs to ADI's high-speed precision ADC product line, designed specifically for demanding communications and instrumentation applications where simultaneous sampling, low jitter, and spectral purity are non-negotiable.
FAQ
What is the maximum sampling frequency supported by the LTC2264IUJ-12#PBF?
The LTC2264IUJ-12#PBF is rated for a maximum sampling frequency of 40Msps. This speed grade is fixed per device variant - the LTC2265-12 supports 65Msps, and the LTC2263-12 supports 25Msps. All three share identical pinout and register map, enabling hardware reuse across performance tiers. The 40Msps limit is enforced by internal timing margins and is guaranteed over the full –40°C to +85°C operating range.
Does the LTC2264IUJ-12#PBF support both internal and external voltage references?
Yes, the LTC2264IUJ-12#PBF supports flexible reference configuration via the SENSE pin. Tying SENSE to VDD selects the internal reference with ±1V input range; tying it to GND selects ±0.5V range; applying an external 0.625V–1.3V reference to SENSE configures custom full-scale range. Internal reference drift is ±25ppm/°C, and external reference mode maintains ±0.3LSB INL performance across temperature.
How does the LVDS serialization mode affect data throughput and PCB layout for the LTC2264IUJ-12#PBF?
The LTC2264IUJ-12#PBF supports 1-lane (1-bit serial per channel) and 2-lane (2-bit serial per channel) LVDS modes. In 2-lane mode at 40Msps, each channel outputs 80Mbps per lane (160Mbps total per channel); in 1-lane mode, it outputs 160Mbps per channel. 2-lane reduces required trace count by half and lowers EMI per lane but increases routing complexity. Both modes maintain identical timing accuracy and jitter performance.
What is the purpose of the PAR/SER pin on the LTC2264IUJ-12#PBF, and how does it impact configuration?
The PAR/SER pin on the LTC2264IUJ-12#PBF selects between serial SPI programming (PAR/SER = GND) and parallel pin-strapped mode (PAR/SER = VDD). In serial mode, CS/SCK/SDI/SDO form a 4-wire SPI interface for full register control. In parallel mode, those same pins become static logic inputs controlling basic functions like lane count and output current - simplifying configuration in resource-constrained microcontroller systems without SPI hardware.
Can the LTC2264IUJ-12#PBF operate with a single 1.8V supply, and what are the implications for power integrity?
Yes, the LTC2264IUJ-12#PBF operates from a single 1.8V analog supply (VDD) and a separate 1.8V output driver supply (OVDD), both specified from 1.7V to 1.9V. Power integrity requires local 0.1µF ceramic bypassing on each VDD/OVDD pin pair, plus bulk capacitance near the 40-pin QFN. The exposed thermal pad (Pin 41) must be soldered to a solid ground plane with ≥4 thermal vias to maintain θJA ≤32°C/W and prevent thermal derating of SNR performance.
LTC2264IUJ-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:
- -40°C ~ 85°C
- Supplier Device Package:
- 40-QFN (6x6)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2264IUJ-12#PBF FAQ
1.How can I place an order for LTC2264IUJ-12#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2264IUJ-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 LTC2264IUJ-12#PBF reliable?
The price and inventory of LTC2264IUJ-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 LTC2264IUJ-12#PBF is usually 5 days.
3.What payment methods are accepted for LTC2264IUJ-12#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2264IUJ-12#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2264IUJ-12#PBF?
LTC2264IUJ-12#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2264IUJ-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 LTC2264IUJ-12#PBF?
For technical support, including LTC2264IUJ-12#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2264IUJ-12#PBF requirements.
6.How does Aetrix verify that LTC2264IUJ-12#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2264IUJ-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 LTC2264IUJ-12#PBF meets industry standards.
7.What is the process for return or replacement of LTC2264IUJ-12#PBF?
All LTC2264IUJ-12#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2264IUJ-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 LTC2264IUJ-12#PBF part is unused and in its original packaging.
Return procedure for LTC2264IUJ-12#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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