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Analog Devices Inc. LTC2267IUJ-12#PBF
- Part No.:
- LTC2267IUJ-12#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
LTC2267IUJ-12#PBF.pdf
- Description:
- IC ADC 12BIT PIPELINED 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,915
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Product details
Overview
LTC2267IUJ-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. It delivers 70.6dB SNR, 88dB SFDR, and ultralow 0.15psRMS aperture jitter at 105Msps sampling rate, with full-power bandwidth of 800MHz and single 1.8V supply operation - enabling direct IF sampling in cellular base stations and software-defined radios.
For engineers reviewing the LTC2267IUJ-12#PBF datasheet, LTC2267IUJ-12#PBF pinout, LTC2267IUJ-12#PBF application, or LTC2267IUJ-12#PBF equivalent, key selection considerations include its 40-pin QFN package, serial LVDS output interface (1- or 2-lane), differential input range (1–2VP-P), shutdown/nap modes, and SPI-configurable operating parameters.
Technical Context
The LTC2267IUJ-12#PBF integrates two matched 12-bit ADC cores with independent sample-and-hold circuits, a PLL-based clock conditioning path, and a digital serializer driving LVDS outputs. Its internal clock duty cycle stabilizer enables full-speed performance across wide input clock duty cycles (20%–80%), while the 0.15psRMS jitter supports undersampling of IF signals up to 700MHz without degradation in noise floor.
Dual-channel synchronization is maintained via shared encode inputs (ENC+/ENC−), and DC accuracy is ensured by ±0.3LSB INL (typ), ±0.1LSB DNL (typ), and no missing codes over –40°C to +85°C. The device supports both internal and external reference configurations via the SENSE pin, with VREF output at 1.25V ±2.5mV and programmable input common-mode bias (VCM1/VCM2).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with guaranteed no missing codes over temperature - ensures monotonicity in precision measurement systems. |
| Sampling Rate | 105Msps maximum - supports real-time digitization of wideband IF signals in LTE and 5G infrastructure. |
| SNR / SFDR | 70.6dB SNR and 88dB SFDR at 70MHz input - enables high-fidelity signal capture in multichannel data acquisition. |
| Aperture Jitter | 0.15psRMS - limits sampling uncertainty to <0.01° phase error at 1GHz, critical for coherent receiver architectures. |
| Power Dissipation | 238mW total at 105Msps (2-lane LVDS, 1.75mA mode) - enables thermal management in dense RF front-end modules. |
| Analog Supply | Single 1.8V (1.7–1.9V) - simplifies power delivery and reduces board-level noise coupling vs. dual-supply ADCs. |
| Input Bandwidth | 800MHz full-power bandwidth - allows direct sampling of L-band and S-band RF signals without external amplification. |
Pinout & Package
40-lead (6mm × 6mm) plastic QFN package with exposed 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 1–2VP-P differential signal; biased by VCM1 at VDD/2 ±25mV. |
| AIN2+, AIN2− | Channel 2 differential analog input | Matched to Channel 1 for <±3mV offset matching - essential for I/Q demodulation accuracy. |
| ENC+, ENC− | Differential encode clock input | Triggers simultaneous sampling on rising/falling edges; supports PECL/LVDS/TTL/CMOS drive. |
| OUT1A+/−, OUT1B+/− | Channel 1 LVDS serialized data outputs | 2-lane mode: 2 bits per clock edge; 1-lane mode: 1 bit per edge - reduces PCB trace count vs. parallel interfaces. |
| OUT2A+/−, OUT2B+/− | Channel 2 LVDS serialized data outputs | Independent serialization timing; FR+/FR− frame sync aligns both channels' data streams. |
| PAR/SER, CS, SCK, SDI | Configuration control interface | Selects serial (SPI) or parallel programming mode; configures LVDS current, output lanes, and power modes. |
| SENSE | Reference selection input | Connect to VDD for internal 1.25V reference (±1V input range); connect to GND for external reference support. |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous dual-channel sampling | Guarantees sub-picosecond inter-channel skew - required for time-aligned I/Q sampling in zero-IF receivers. |
| Serial LVDS interface (1- or 2-lane) | Reduces interface pin count by >60% vs. parallel CMOS; supports 1000Mbps max serial data rate with embedded frame sync. |
| Internal clock duty cycle stabilizer | Enables full 105Msps performance with 20–80% encode clock duty cycle - eliminates need for external clock conditioning circuitry. |
| Configurable power modes | Nap mode draws 70mW; Sleep mode draws 1mW - enables dynamic power scaling in battery-powered portable medical imaging devices. |
| Matched channel performance | ±0.2% gain matching and ±3mV offset matching - preserves amplitude and phase integrity in beamforming and MIMO applications. |
Applications
| Cellular Base Stations | Software Defined Radios |
|---|---|
|
Use Scenario: Digitizing dual-path IF signals (e.g., 185–250MHz) in LTE macrocell remote radio heads. IC Role / Device Role / Timing Role: Simultaneous-sampling dual ADC providing synchronized I/Q data streams for digital predistortion and MIMO processing. Use Value: 88dB SFDR prevents adjacent-channel interference masking weak signals; 0.15psRMS jitter maintains EVM <1.5% at 256-QAM. |
Use Scenario: Wideband spectrum monitoring across 10MHz–1GHz using tunable front-end with direct IF sampling. IC Role / Device Role / Timing Role: High-dynamic-range ADC capturing instantaneous bandwidth up to 105MHz per channel for real-time FFT analysis. Use Value: 70.6dB SNR enables detection of –120dBm signals in presence of strong blockers; 800MHz input BW avoids external anti-alias filtering. |
| Portable Medical Imaging | Multichannel Data Acquisition |
|
Use Scenario: Ultrasound beamformer digitizing 128+ analog channels from phased-array transducers. IC Role / Device Role / Timing Role: Dual-channel ADC used in time-interleaved configuration to achieve effective 210Msps aggregate rate with matched latency. Use Value: ±0.3LSB INL ensures accurate echo amplitude mapping; 238mW total power enables fanless handheld design. |
Use Scenario: High-precision vibration analysis in industrial predictive maintenance systems with 16-channel synchronized sensing. IC Role / Device Role / Timing Role: Precision ADC capturing low-frequency (<10kHz) mechanical resonance signatures with minimal harmonic distortion. Use Value: 0.3LSBRMS transition noise suppresses quantization artifacts in FFT-based spectral analysis; SPI configurability supports field calibration. |
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-105 | 12-bit, 105Msps, single-channel; requires external clock divider for dual-channel sync; 65dB SNR (vs. 70.6dB) | Lacks native simultaneous sampling; needs FPGA-based interleaving and skew compensation | Choose when board space permits separate ADCs and lower cost outweighs channel matching requirements |
| LTC2268IUJ-12#PBF | 12-bit, 125Msps, identical pinout/package; 292mW power (vs. 238mW); same SNR/SFDR specs | Higher sampling rate enables wider instantaneous bandwidth but increases thermal load | Choose when system requires >105Msps capture bandwidth and thermal margin allows extra 54mW dissipation |
Compared with AD9233BCPZ-105 and LTC2268IUJ-12#PBF, the LTC2267IUJ-12#PBF uniquely balances 105Msps dual-channel simultaneity, 70.6dB SNR, and 238mW power in a single 40-pin QFN - making it optimal for thermally constrained, phase-coherent RF and instrumentation designs where channel matching is non-negotiable.
Availability
LTC2267IUJ-12#PBF is available at Aetrix Electronics and suitable for cellular infrastructure, software-defined radio development, and portable medical imaging requiring stable component supply across extended temperature ranges (–40°C to +85°C).
Supply support for LTC2267IUJ-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 DSP solutions for precision instrumentation, communications, and industrial applications.
The LTC2267IUJ-12#PBF belongs to the LTC226x family of low-power, high-speed dual ADCs designed specifically for demanding communications and test equipment where simultaneous sampling, low jitter, and small-footprint serial interfaces are critical.
FAQ
What is the maximum sampling rate supported by the LTC2267IUJ-12#PBF?
The LTC2267IUJ-12#PBF supports a maximum sampling rate of 105Msps, as specified in its speed grade designation "-12" and confirmed in the Absolute Maximum Ratings and Timing Characteristics tables. This rate is achievable in both 1-lane and 2-lane LVDS output modes, provided the serial data rate does not exceed 1000Mbps and tSER ≥ 1ns.
Does the LTC2267IUJ-12#PBF support external reference configuration?
Yes, the LTC2267IUJ-12#PBF supports external reference configuration via the SENSE pin. When SENSE is tied to GND, the device operates in external reference mode, accepting 0.625V–1.3V at the SENSE pin and enabling flexible input range selection. Internal reference mode (±1V range) is selected by connecting SENSE to VDD.
How many pins does the LTC2267IUJ-12#PBF use for LVDS data transmission?
The LTC2267IUJ-12#PBF uses eight pins for LVDS data transmission: OUT1A+/−, OUT1B+/−, OUT2A+/−, and OUT2B+/−. In 2-lane mode, each channel outputs two bits per clock cycle; in 1-lane mode, only OUT1A+/− and OUT2A+/− are active, reducing total LVDS pairs to four while maintaining frame synchronization via FR+/FR−.
What power-saving modes are available on the LTC2267IUJ-12#PBF?
The LTC2267IUJ-12#PBF offers two hardware-controlled power-saving modes: Nap mode (70mW) and Sleep mode (1mW). Nap mode retains register settings and reference bias while disabling ADC cores and LVDS drivers; Sleep mode powers down all analog and digital circuitry except the wake-up logic, requiring a reset to restore operation.
Is the LTC2267IUJ-12#PBF pin-compatible with other members of the LTC226x-12 family?
Yes, the LTC2267IUJ-12#PBF is pin-compatible with the LTC2268IUJ-12#PBF and LTC2266IUJ-12#PBF within the same temperature grade (I-grade) and package (UJ). All share identical 40-pin QFN layout, pin functions, and power/ground assignments - enabling drop-in replacement for sampling rate scalability (125/105/80Msps) without PCB redesign.
LTC2267IUJ-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):
- 105M
- 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:
- -
LTC2267IUJ-12#PBF FAQ
1.How can I place an order for LTC2267IUJ-12#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2267IUJ-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 LTC2267IUJ-12#PBF reliable?
The price and inventory of LTC2267IUJ-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 LTC2267IUJ-12#PBF is usually 5 days.
3.What payment methods are accepted for LTC2267IUJ-12#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2267IUJ-12#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2267IUJ-12#PBF?
LTC2267IUJ-12#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2267IUJ-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 LTC2267IUJ-12#PBF?
For technical support, including LTC2267IUJ-12#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2267IUJ-12#PBF requirements.
6.How does Aetrix verify that LTC2267IUJ-12#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2267IUJ-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 LTC2267IUJ-12#PBF meets industry standards.
7.What is the process for return or replacement of LTC2267IUJ-12#PBF?
All LTC2267IUJ-12#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2267IUJ-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 LTC2267IUJ-12#PBF part is unused and in its original packaging.
Return procedure for LTC2267IUJ-12#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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