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Analog Devices Inc. LTC2141IUP-12#PBF
- Part No.:
- LTC2141IUP-12#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-WFQFN Exposed Pad
- Datasheet:
-
LTC2141IUP-12#PBF.pdf
- Description:
- IC ADC 12BIT PIPELINED 64QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,046
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Product details
Overview
LTC2141IUP-12#PBF from Analog Devices (acquired Linear Technology) is a 12-bit, 40Msps dual-channel simultaneous-sampling analog-to-digital converter optimized for high-dynamic-range signal digitization in communications infrastructure. It delivers 70.5dB SNR, 89dB SFDR, and ultralow 0.10psRMS jitter at –40°C to +85°C, enabling undersampling of IF signals up to 140MHz in cellular base stations and software-defined radios.
For engineers reviewing the LTC2141IUP-12#PBF datasheet, LTC2141IUP-12#PBF pinout, LTC2141IUP-12#PBF application, or LTC2141IUP-12#PBF equivalent, key selection criteria include its dual-channel synchronization accuracy, 750MHz full-power bandwidth, selectable CMOS/DDR CMOS/DDR LVDS outputs, 1.8V single-supply operation, and SPI-configurable clock duty cycle stabilizer and data randomizer.
Technical Context
The LTC2141IUP-12#PBF implements two independent 12-bit ADC cores sharing a common sample-and-hold with 750MHz bandwidth and <0.10psRMS aperture jitter, ensuring precise channel-to-channel timing alignment for I/Q sampling. Its architecture supports differential or single-ended encode inputs (ENC+/ENC–), programmable input range (1VP-P to 2VP-P), and internal/external reference modes.
Digital interface flexibility includes full-rate CMOS, DDR CMOS, or DDR LVDS outputs with separate OVDD supply (1.1V–1.8V), while configuration is handled via a 3-wire SPI port supporting serial or parallel programming modes. Power management features include Nap (10mW) and Sleep (1mW) modes, plus optional clock duty cycle stabilization for wide-input-duty-cycle robustness.
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 measurement systems. |
| Sampling Rate | 40Msps - enables real-time digitization of wideband IF signals up to 20MHz Nyquist bandwidth per channel. |
| SNR | 70.5dB at 70MHz input - provides >11.7 effective bits for high-fidelity signal capture in demanding RF receivers. |
| SFDR | 89dB at 70MHz input - suppresses spurious content critical for multi-carrier cellular and radar applications. |
| Power Dissipation | 64.6mW total at 40Msps (CMOS mode) - enables thermally constrained portable medical imaging and multi-channel DAQ designs. |
| Input Bandwidth | 750MHz full-power - supports direct sampling of L-band and S-band RF signals without external amplification. |
| Aperture Jitter | 0.10psRMS (differential encode) - limits sampling uncertainty to <0.002° phase error at 100MHz, essential for coherent beamforming. |
Pinout & Package
64-pin (9mm × 9mm) plastic QFN package with exposed thermal pad (Pin 65 = GND). Requires soldering exposed pad to PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (1,16,17,64) | Analog power supply | 1.7V–1.9V rail; must be bypassed locally with 0.1μF ceramic capacitors to ensure low-noise conversion performance. |
| AIN1+/AIN1– (4,5) | Channel 1 differential analog input | Accepts 1VP-P to 2VP-P differential signal; common-mode biased by VCM1 (Pin 2) at VDD/2. |
| ENC+/ENC– (18,19) | Encode clock inputs | Support differential (LVDS/PECL) or single-ended (TTL/CMOS) clocking; ENC– tied to GND enables single-ended mode. |
| D1_0–D1_11 / D2_0–D2_11 (47–48,50–58,27–32) | Dual-channel digital output data | Configurable as CMOS, DDR CMOS, or DDR LVDS; output voltage swing set by OVDD (Pin 42). |
| PAR/SER (11) | Programming mode select | Ground = serial SPI mode; VDD = parallel logic mode - determines function of CS/SCK/SDI/SDO pins. |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous sampling dual ADC | Guarantees matched gain, offset, and timing between channels - eliminates skew-induced image distortion in I/Q demodulation. |
| Selectable output interface | CMOS/DDR CMOS/DDR LVDS options allow optimization for board-level noise immunity, timing margin, and power budget. |
| Optional clock duty cycle stabilizer | Enables high-performance operation with non-50% duty cycle clocks - simplifies clock generation in FPGA-based systems. |
| Programmable input range | 1VP-P to 2VP-P selection adapts to varying signal chain gain without external attenuation or amplification. |
| Low-power Nap and Sleep modes | 10mW and 1mW states enable rapid power cycling in battery-powered test equipment and portable ultrasound. |
Applications
| Cellular Base Stations | Software Defined Radios |
|---|---|
Use Scenario: Digitizing dual-path receive signals in LTE/5G macrocell remote radio heads with 20MHz+ instantaneous bandwidth. IC Role / Device Role / Timing Role: Simultaneous-sampling dual ADC providing synchronized I/Q data streams to FPGA baseband processors. Use Value: 89dB SFDR prevents adjacent-channel interference; 750MHz bandwidth allows direct IF sampling at 184MHz, eliminating analog downconversion stages. | Use Scenario: Reconfigurable RF front-end in military comms jammers and cognitive radio platforms requiring agile frequency hopping. IC Role / Device Role / Timing Role: High-linearity ADC capturing wide instantaneous bandwidth for real-time spectrum analysis and adaptive waveform generation. Use Value: 70.5dB SNR ensures accurate signal classification; SPI configurability enables runtime adjustment of output format and power modes. |
| Portable Medical Imaging | Multi-Channel Data Acquisition |
Use Scenario: Ultrasound beamformer digitizing echo returns from 64+ transducer elements in handheld diagnostic devices. IC Role / Device Role / Timing Role: Low-power dual ADC acquiring time-aligned RF echo data for digital beamforming and Doppler processing. Use Value: 64.6mW total power enables extended battery life; 0.10psRMS jitter preserves phase coherence across channels for precise spatial resolution. | Use Scenario: High-channel-count vibration monitoring system for industrial predictive maintenance, sampling 32+ sensors at 25ksps each. IC Role / Device Role / Timing Role: Precision ADC providing synchronized measurements across isolated sensor groups with minimal inter-channel crosstalk (–110dBc). Use Value: ±0.3LSB INL ensures traceable calibration; 12-bit resolution captures micro-strain events in rotating machinery diagnostics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9233BCPZ-40 | 12-bit, 40Msps, single-channel; requires external clock distribution for dual-channel sync; 69dB SNR, 85dB SFDR. | Lacks inherent simultaneous sampling; needs external circuitry for channel alignment - increases layout complexity and timing uncertainty. | Choose when only one channel is needed or when external synchronization is already implemented. |
| LTC2261IUP-12#PBF | 12-bit, 40Msps, dual-channel with identical pinout and SPI interface; lower power (55mW), slightly reduced SFDR (87dB). | Same footprint and register map - drop-in replacement where 2dB SFDR margin is acceptable for cost/power trade-off. | Choose for lowest power consumption in space-constrained embedded systems where SFDR margin permits. |
Compared with AD9233BCPZ-40 and LTC2261IUP-12#PBF, the LTC2141IUP-12#PBF uniquely integrates true simultaneous sampling, 89dB SFDR, and configurable DDR LVDS outputs in a single 64-pin QFN - reducing BOM count and PCB area while guaranteeing channel matching without external components.
Availability
LTC2141IUP-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.
Supply support for LTC2141IUP-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 industrial, automotive, communications, and healthcare markets.
The LTC2141IUP-12#PBF belongs to ADI's high-speed precision ADC product line, designed specifically for demanding communications and instrumentation applications requiring simultaneous sampling, low jitter, and flexible digital interfacing.
FAQ
What is the operating temperature range of the LTC2141IUP-12#PBF?
The LTC2141IUP-12#PBF is rated for industrial operation from –40°C to +85°C, as indicated by the "I" grade suffix in the part number. This range is validated across all key specifications including SNR, SFDR, INL, and power consumption, making it suitable for outdoor base station equipment and ruggedized test instruments.
Does the LTC2141IUP-12#PBF support both differential and single-ended analog inputs?
Yes, the LTC2141IUP-12#PBF supports differential analog inputs on AIN1+/AIN1– and AIN2+/AIN2– with common-mode bias provided by VCM1 and VCM2. Single-ended operation is not supported directly; however, single-ended clocking is enabled by tying ENC– to GND, while analog inputs must remain differential for specified AC performance.
How does the clock duty cycle stabilizer function in the LTC2141IUP-12#PBF?
The clock duty cycle stabilizer in the LTC2141IUP-12#PBF corrects non-50% duty cycle encode clocks internally, ensuring optimal aperture timing and minimizing sampling distortion. It is enabled via the SPI register or parallel control pin CS, and operates across the full 1–40MHz sampling range without degrading jitter performance.
What output interface options does the LTC2141IUP-12#PBF provide?
The LTC2141IUP-12#PBF offers three configurable digital output modes: full-rate CMOS, double-data-rate (DDR) CMOS, and DDR LVDS. Output voltage swing is set by OVDD (1.1V–1.8V for CMOS; 1.7V–1.9V for LVDS), and mode selection is controlled via PAR/SER pin state and SPI registers.
Can the LTC2141IUP-12#PBF operate with an external reference?
Yes, the LTC2141IUP-12#PBF supports external reference operation via the SENSE pin (Pin 63), accepting 0.625V–1.300V. When used, the internal 1.25V reference is disabled, and VREF (Pin 62) becomes an output. External reference mode improves gain accuracy stability and reduces drift compared to internal reference operation.
LTC2141IUP-12#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 64-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 - Parallel, Parallel
- 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:
- 64-QFN (9x9)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2141IUP-12#PBF FAQ
1.How can I place an order for LTC2141IUP-12#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2141IUP-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 LTC2141IUP-12#PBF reliable?
The price and inventory of LTC2141IUP-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 LTC2141IUP-12#PBF is usually 5 days.
3.What payment methods are accepted for LTC2141IUP-12#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2141IUP-12#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2141IUP-12#PBF?
LTC2141IUP-12#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2141IUP-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 LTC2141IUP-12#PBF?
For technical support, including LTC2141IUP-12#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2141IUP-12#PBF requirements.
6.How does Aetrix verify that LTC2141IUP-12#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2141IUP-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 LTC2141IUP-12#PBF meets industry standards.
7.What is the process for return or replacement of LTC2141IUP-12#PBF?
All LTC2141IUP-12#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2141IUP-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 LTC2141IUP-12#PBF part is unused and in its original packaging.
Return procedure for LTC2141IUP-12#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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