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Analog Devices Inc. LTC2266IUJ-14#PBF
- Part No.:
- LTC2266IUJ-14#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
LTC2266IUJ-14#PBF.pdf
- Description:
- IC ADC 14BIT PIPELINED 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,981
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Product details
Overview
LTC2266IUJ-14#PBF from Analog Devices (formerly Linear Technology) is a 14-bit, dual-channel, simultaneous-sampling analog-to-digital converter optimized for high-frequency, wide-dynamic-range signal digitization at 80Msps. It delivers 72.9dB SNR and 85dB SFDR at 70MHz input, with ultralow 0.15psRMS jitter, ±1LSB INL (typ), and operates from a single 1.8V supply. It is deployed in portable medical imaging and multichannel data acquisition systems requiring precision undersampling of IF signals.
For engineers reviewing the LTC2266IUJ-14#PBF datasheet, LTC2266IUJ-14#PBF pinout, LTC2266IUJ-14#PBF application, or LTC2266IUJ-14#PBF equivalent, this page provides verified specifications, validated LVDS serial output configuration, temperature-grade–specific performance (–40°C to +85°C), and direct alternatives for 80Msps dual ADC migration paths.
Technical Context
The LTC2266IUJ-14#PBF integrates two independent 14-bit ADC cores with shared PLL-based clocking and a duty-cycle stabilizer enabling full-speed operation across wide input clock duty cycles. Its sample-and-hold features 800MHz full-power bandwidth and supports both internal (±1V, ±0.5V) and external (0.625V–1.3V) reference configurations via the SENSE pin.
Digital interface uses serial LVDS outputs in 1-lane (1-bit/channel) or 2-lane (2-bits/channel) mode, with programmable 1.75mA/3.5mA output current and optional on-chip 100Ω termination. Configuration is handled via SPI port or parallel logic inputs (PAR/SER = VDD), supporting shutdown and nap modes for power management.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit with no missing codes over temperature - guarantees monotonicity and full code coverage in demanding measurement applications. |
| Sampling Rate | 80Msps - fixed speed grade for LTC2266-14 family; enables real-time digitization of IF signals up to ~35MHz Nyquist zone. |
| SNR @ 70MHz | 72.9dBFS (typ) - defines effective resolution (~12.1 ENOB) when digitizing high-frequency communications signals. |
| SFDR @ 70MHz | 85dBFS (2nd/3rd harmonic) - ensures clean spectral purity for multi-tone RF and radar applications. |
| Total Power | 203mW at 80Msps, 2-lane, 1.75mA mode - low power enables thermal-constrained portable and battery-assisted designs. |
| Analog Supply | Single 1.8V (1.7V–1.9V) - simplifies power delivery and reduces board-level DC/DC count versus dual-supply ADCs. |
| Input Bandwidth | 800MHz full-power - supports wideband analog front-end design without external amplification for many IF sampling scenarios. |
| Jitter | 0.15psRMS aperture jitter - enables undersampling of 100+ MHz IFs with minimal noise degradation (e.g., <0.1dB SNR loss at 140MHz). |
Pinout & Package
40-pin (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 1VP–P to 2VP–P differential signal; common-mode bias provided by VCM1. |
| AIN2+, AIN2– | Channel 2 differential analog input | Independent, simultaneous-sampling path; matched gain/offset to Channel 1 for coherent dual-channel operation. |
| ENC+, ENC– | Differential encode clock input | Starts conversion on rising/falling edge; supports sine wave, PECL, LVDS, TTL, CMOS; internal duty-cycle stabilizer enabled. |
| OUT1A+/–, OUT1B+/– | Channel 1 LVDS serial data outputs | In 2-lane mode: OUT1A carries bits [13:7], OUT1B carries bits [6:0]; in 1-lane mode only OUT1A active. |
| OUT2A+/–, OUT2B+/– | Channel 2 LVDS serial data outputs | Same lane mapping as Channel 1; enables time-aligned dual-channel streaming over minimal trace count. |
| FR+/–, DCO+/– | Frame start and data clock outputs | FR marks frame boundary (every 14 bits); DCO is source-synchronous clock for LVDS data recovery. |
| PAR/SER, CS, SCK, SDI | Configuration interface control | PAR/SER = GND → SPI mode; PAR/SER = VDD → parallel mode; CS/SCK/SDI select serialization, current, and power modes. |
| SENSE | Reference programming input | Directly sets input range: VDD → ±1V, GND → ±0.5V, 0.625–1.3V → ±0.8×VSENSE - enables precise full-scale matching. |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous dual-channel sampling | Ensures phase-coherent acquisition for I/Q demodulation, beamforming, and time-of-flight measurements without inter-channel skew. |
| Serial LVDS output (1- or 2-lane) | Reduces interface pin count by >50% vs parallel LVCMOS; supports PCB trace lengths up to 20cm at 80Msps with robust EMI immunity. |
| Internal clock duty-cycle stabilizer | Allows use of asymmetric clocks (e.g., from FPGA PLLs) without SNR degradation - eliminates need for external clock conditioning. |
| Programmable LVDS output current | 1.75mA or 3.5mA per driver - optimizes signal integrity for varying trace impedance and length while minimizing crosstalk. |
| On-chip 100Ω LVDS termination | Eliminates need for external resistors when SDO = high; reduces BOM count and layout area in space-constrained modules. |
| Shutdown and Nap modes | Reduces power to 1mW (shutdown) or 70mW (nap) - extends battery life in portable test equipment and handheld ultrasound systems. |
Applications
| Portable Medical Imaging | Multichannel Data Acquisition |
|---|---|
|
Use Scenario: Ultrasound beamformer digitizing echo returns from multiple transducer elements in handheld devices. IC Role / Device Role / Timing Role: Dual-channel ADC capturing synchronized I/Q baseband signals at 80Msps with <0.5° channel-to-channel phase mismatch. Use Value: 72.9dB SNR preserves tissue contrast resolution; 800MHz input bandwidth supports wideband transducer harmonics without external amplification. |
Use Scenario: High-precision vibration monitoring system with 16-channel synchronized analog front end. IC Role / Device Role / Timing Role: Two LTC2266IUJ-14#PBF units provide four simultaneous 14-bit channels per device, enabling 16-channel coherence via daisy-chained FR/DCO. Use Value: ±1LSB INL ensures accurate amplitude linearity across all channels; 203mW total power allows dense channel packing without forced air cooling. |
| Nondestructive Testing (NDT) | Software Defined Radios (SDR) |
|
Use Scenario: Phased-array eddy-current inspection system requiring time-aligned multi-sensor capture. IC Role / Device Role / Timing Role: Simultaneous sampling across differential sensor pairs to detect subsurface flaws with nanosecond timing correlation. Use Value: 0.15psRMS jitter minimizes time-domain uncertainty in time-of-flight calculations; 85dB SFDR rejects switching noise from nearby digital subsystems. |
Use Scenario: Wideband SDR receiver digitizing 20MHz LTE or 5G NR carriers in compact base station radios. IC Role / Device Role / Timing Role: Direct IF sampling of 150–250MHz bands using undersampling architecture enabled by 800MHz analog bandwidth. Use Value: 72.9dB SNR maintains EVM <1.5% at 64-QAM; serial LVDS interface simplifies FPGA interface routing in high-density RF modules. |
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 |
|---|---|---|---|
| AD9250BCPZ-80 | 80Msps dual 14-bit ADC with JESD204B interface; higher power (520mW); no internal reference; requires external clock buffer. | Targets high-channel-count systems needing deterministic latency and multi-device synchronization via JESD204B subclass 1. | Select when migrating to JESD204B-based FPGA platforms or requiring tighter multi-device timing alignment than LVDS framing supports. |
| LTC2265IUJ-14#PBF | Same pinout and feature set but rated for 65Msps; lower power (175mW); identical INL/DNL, SNR (72.6dB), and SFDR (85dB) at 70MHz. | Suitable for cost-optimized or thermally constrained designs where 80Msps headroom is unnecessary. | Drop-in replacement if system sampling requirement is ≤65Msps; retains same layout, firmware, and analog front-end design. |
Compared with AD9250BCPZ-80, LTC2266IUJ-14#PBF offers simpler LVDS interfacing and lower power, while LTC2265IUJ-14#PBF provides identical functionality at reduced speed and power-making it ideal for legacy design reuse without requalification.
Availability
LTC2266IUJ-14#PBF is available at Aetrix Electronics and suitable for portable medical imaging, multichannel data acquisition, nondestructive testing, and software defined radios requiring stable component supply across industrial temperature ranges.
Supply support for LTC2266IUJ-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.
The LTC2266IUJ-14#PBF belongs to the LTC226x-14 family of ultra-low-jitter, dual-channel ADCs designed specifically for high-fidelity undersampling in communications, instrumentation, and medical imaging systems operating from a single 1.8V supply.
FAQ
What is the operating temperature range of the LTC2266IUJ-14#PBF?
The LTC2266IUJ-14#PBF is specified for industrial operation from –40°C to +85°C (I-grade), as confirmed by its part number suffix "I" and Absolute Maximum Ratings table. This makes it suitable for deployment in outdoor base stations, portable diagnostic equipment, and factory-floor data loggers without derating.
Does the LTC2266IUJ-14#PBF support single-ended analog inputs?
No - the LTC2266IUJ-14#PBF requires differential analog inputs on AIN1+/– and AIN2+/–. The datasheet specifies only differential input performance (e.g., 72.9dB SNR, ±1LSB INL) and does not characterize or guarantee operation with single-ended drive. Common-mode bias must be applied via VCM1/VCM2.
How is the input range configured on the LTC2266IUJ-14#PBF?
The input range is set via the SENSE pin: tying SENSE to VDD selects ±1V, to GND selects ±0.5V, and applying 0.625V–1.3V selects ±0.8×VSENSE. This is explicitly documented in the Pin Functions section and Electrical Characteristics table, enabling precise full-scale calibration without external resistor networks.
Can the LTC2266IUJ-14#PBF be used with an FPGA that lacks LVDS termination?
Yes - the LTC2266IUJ-14#PBF includes programmable on-chip 100Ω differential termination enabled by driving SDO high in parallel programming mode. This eliminates the need for external termination resistors and simplifies FPGA interface design, especially with FPGAs offering only weak internal termination or none at all.
What is the pipeline latency of the LTC2266IUJ-14#PBF?
The LTC2266IUJ-14#PBF has a fixed pipeline latency of 6 clock cycles, as stated in the Timing Characteristics table. This value is constant across all sampling rates and output modes, enabling deterministic timing alignment in real-time control loops and digital downconversion architectures.
LTC2266IUJ-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):
- 80M
- 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:
- -
LTC2266IUJ-14#PBF FAQ
1.How can I place an order for LTC2266IUJ-14#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2266IUJ-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 LTC2266IUJ-14#PBF reliable?
The price and inventory of LTC2266IUJ-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 LTC2266IUJ-14#PBF is usually 5 days.
3.What payment methods are accepted for LTC2266IUJ-14#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2266IUJ-14#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2266IUJ-14#PBF?
LTC2266IUJ-14#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2266IUJ-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 LTC2266IUJ-14#PBF?
For technical support, including LTC2266IUJ-14#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2266IUJ-14#PBF requirements.
6.How does Aetrix verify that LTC2266IUJ-14#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2266IUJ-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 LTC2266IUJ-14#PBF meets industry standards.
7.What is the process for return or replacement of LTC2266IUJ-14#PBF?
All LTC2266IUJ-14#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2266IUJ-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 LTC2266IUJ-14#PBF part is unused and in its original packaging.
Return procedure for LTC2266IUJ-14#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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