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Analog Devices Inc. LTC2141IUP-12#TRPBF
- Part No.:
- LTC2141IUP-12#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-WFQFN Exposed Pad
- Datasheet:
-
LTC2141IUP-12#TRPBF.pdf
- Description:
- IC ADC 12BIT PIPELINED 64QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,187
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Product details
Overview
LTC2141IUP-12#TRPBF from Analog Devices (formerly 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 0.08psRMS jitter at full speed, operating from a single 1.8V supply with CMOS, DDR CMOS, or DDR LVDS output interfaces. It is deployed in cellular base stations and software-defined radios requiring precise channel matching and wideband IF sampling.
For engineers reviewing the LTC2141IUP-12#TRPBF datasheet, LTC2141IUP-12#TRPBF pinout, LTC2141IUP-12#TRPBF application, or LTC2141IUP-12#TRPBF equivalent, key selection criteria include guaranteed ±0.3LSB INL over temperature, 750MHz full-power bandwidth, differential encode support, SPI-configurable modes (randomizer, duty cycle stabilizer), and industrial-grade –40°C to +85°C operation in a 64-pin QFN package.
Technical Context
The LTC2141IUP-12#TRPBF integrates two fully matched 12-bit ADC cores sharing a common sample-and-hold with 750MHz bandwidth, enabling true simultaneous sampling critical for I/Q demodulation and beamforming. Its architecture supports differential or single-ended encode inputs (ENC+/ENC–), programmable input range (1VP-P to 2VP-P), and selectable output formats - including DDR LVDS for noise immunity in dense RF systems.
Internal features include a serial SPI port for real-time configuration of shutdown/nap modes, clock duty cycle stabilization, data output randomization, and reference control (internal or external via SENSE). The device uses separate VDD (1.8V analog) and OVDD (1.2–1.8V digital output) supplies, allowing flexible interface voltage scaling without compromising analog performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution & Performance | 12-bit, no missing codes; 70.5dB SNR and 89dB SFDR at 70MHz input, enabling high-fidelity IF sampling in SDR and baseband receivers. |
| Sampling Rate | 40Msps - fixed rate for LTC2141 variant; supports time-interleaved or parallel channel architectures without resampling latency. |
| Analog Input Bandwidth | 750MHz full-power bandwidth - allows direct undersampling of L-band and lower C-band RF signals without external filtering. |
| Power Consumption | 64.6mW total (33mW per channel) at 40Msps with CMOS outputs - enables thermally constrained portable medical imaging and multi-channel DAQ systems. |
| Supply & Interface | Single 1.8V VDD analog supply; configurable OVDD (1.2–1.8V); supports CMOS, DDR CMOS, or DDR LVDS outputs - simplifies PCB routing and EMI management. |
| Accuracy | ±0.3LSB typical INL and ±0.1LSB typical DNL over –40°C to +85°C - ensures consistent linearity across industrial temperature ranges without calibration. |
| Jitter Performance | 0.08psRMS aperture jitter - preserves ENOB at high input frequencies, critical for maintaining SNR in wideband communication receivers. |
Pinout & Package
64-pin (9mm × 9mm) plastic QFN package with exposed thermal pad (Pin 65 = GND), requiring soldering to PCB for thermal and electrical integrity. Pin functions are mode-dependent (CMOS/LVDS), but core analog, clock, and control pins remain consistent across configurations.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pins 1, 16, 17, 64) | Analog power supply | 1.7–1.9V supply for ADC core and reference; requires local 0.1μF ceramic bypassing to minimize noise coupling into conversion path. |
| AIN1+/AIN1–, AIN2+/AIN2– | Differential analog inputs | High-impedance, 750MHz BW inputs accepting 1–2VP-P differential signals; biased by VCM1/VCM2 (VDD/2) for optimal common-mode rejection. |
| ENC+/ENC– | Encode clock inputs | Differential or single-ended (ENC– tied to GND) sampling trigger; supports PECL/LVDS/TTL/CMOS logic; enables sub-100fs timing precision with optional duty cycle stabilizer. |
| PAR/SER (Pin 11) | Programming mode select | Hardwired to GND for SPI configuration (CS/SCK/SDI/SDO active) or to VDD for parallel mode (CS/SCK/SDI control simplified functions like output format and power modes). |
| D1_[0–11], D2_[0–11] | Digital data outputs | Channel 1 and 2 parallel output buses; pin mapping differs between CMOS (single-ended) and LVDS (differential pair) modes - verified per datasheet Figure 3 and 4 pinouts. |
| OVDD (Pin 42), OGND (Pin 41) | Digital output supply/ground | Independent 1.2–1.8V supply for output drivers; OGND must be low-inductance connected to system ground plane to prevent digital switching noise from modulating analog performance. |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous sampling dual ADC | Guaranteed inter-channel skew <10ps and gain/offset matching (±0.2%FS / ±1.5mV) - eliminates phase error in coherent multi-antenna systems. |
| Configurable output interface | Hardware-selectable CMOS, DDR CMOS, or DDR LVDS - enables drop-in integration into existing FPGA or ASIC interfaces without redesigning I/O banks. |
| Low-power operational modes | 1mW sleep and 10mW nap modes - reduces system standby power in battery-powered portable medical ultrasound and handheld spectrum analyzers. |
| Integrated clock duty cycle stabilizer | Compensates for >40%–60% input clock duty cycle variation - relaxes clock generation requirements in cost-sensitive base station designs using simple oscillators. |
| SPI serial configuration port | Enables runtime reconfiguration of randomizer, output format, and power modes - supports adaptive signal processing in cognitive radio and dynamic spectrum access applications. |
| Industrial temperature grade | –40°C to +85°C operation with guaranteed DC specs (INL/DNL/offset/gain) - suitable for uncooled outdoor small cells and industrial NDT equipment. |
Applications
| Cellular Base Stations | Software Defined Radios |
|---|---|
Use Scenario: Digitizing dual-path IF signals (I/Q) in LTE/5G macrocell remote radio heads with 70MHz center frequency. IC Role / Device Role / Timing Role: Simultaneous-sampling dual ADC providing matched gain/phase channels for quadrature demodulation and digital up/down-conversion. Use Value: 89dB SFDR suppresses adjacent-channel interference; 0.08psRMS jitter maintains EVM <2.5% at 20MHz bandwidth; 750MHz BW enables direct IF sampling without image-reject filters. |
Use Scenario: Reconfigurable front-end in military SATCOM terminals supporting multiple waveforms (TCDL, WNW, SRW) across HF–2GHz bands. IC Role / Device Role / Timing Role: High-linearity ADC core with SPI-controlled randomizer and output format - adapts to varying modulation bandwidths and host processor I/O constraints. Use Value: ±0.3LSB INL ensures accurate constellation mapping; DDR LVDS outputs reduce EMI in mixed-signal enclosures; nap mode extends battery life during idle waveform periods. |
| Portable Medical Imaging | Multi-Channel Data Acquisition |
Use Scenario: Ultrasound beamformer digitizing 16–32 analog receive channels in handheld diagnostic probes. IC Role / Device Role / Timing Role: Dual ADC used in time-interleaved or parallel channel pairs to achieve effective 80+ Msps aggregate rate while maintaining low power per channel. Use Value: 64.6mW total power enables fanless probe design; 70.5dB SNR resolves subtle tissue contrast; 1.8V single supply simplifies power tree in space-constrained enclosures. |
Use Scenario: Precision test equipment capturing synchronized voltage/current transients across 8–16 sensors in power electronics validation. IC Role / Device Role / Timing Role: Simultaneous sampling ADC ensuring deterministic phase alignment between current shunt and bus voltage measurements for accurate power calculation. Use Value: Guaranteed ±1.5mV offset matching eliminates inter-channel DC bias errors; SPI-configurable shutdown allows selective channel disabling to optimize power vs. channel count. |
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-65 | 12-bit, 65Msps single-channel ADC; no simultaneous dual-core architecture; requires external clock distribution for dual-channel sync. | Lacks inherent channel matching; unsuitable for I/Q or beamforming where inter-channel skew <10ps is mandatory. | Select only when aggregate throughput >65Msps is needed and channel matching is handled externally via FPGA logic or delay calibration. |
| LTC2261IUJ-12#PBF | 12-bit, 40Msps dual-channel ADC with identical pinout and SPI interface; lower SNR (69.2dB) and higher power (74mW) than LTC2141IUP-12#TRPBF. | Same functional role but reduced dynamic range; acceptable for cost-sensitive industrial DAQ where SFDR >85dB is sufficient. | Choose when BOM consolidation with legacy LTC226x designs is prioritized over peak SNR performance. |
Compared with AD9233BCPZ-65 and LTC2261IUJ-12#PBF, the LTC2141IUP-12#TRPBF uniquely delivers guaranteed simultaneous sampling, superior 70.5dB SNR, and lower 64.6mW power at 40Msps - making it the optimal choice for thermally constrained, phase-coherent dual-channel systems where channel matching and jitter-limited ENOB are design-critical.
Availability
LTC2141IUP-12#TRPBF is available at Aetrix Electronics and suitable for cellular infrastructure, software-defined radio development, and portable medical imaging systems requiring stable component supply across extended product lifecycles.
Supply support for LTC2141IUP-12#TRPBF 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 technologies, serving aerospace, industrial, automotive, and communications markets.
The LTC2141IUP-12#TRPBF belongs to the LTC214x family of ultra-low-power, high-SFDR dual ADCs designed specifically for demanding communications and instrumentation applications where simultaneous sampling, low jitter, and industrial temperature reliability are essential.
FAQ
What is the maximum input frequency supported by the LTC2141IUP-12#TRPBF?
The LTC2141IUP-12#TRPBF features a 750MHz full-power bandwidth (BW-3dB), meaning it can accurately digitize analog inputs up to 750MHz while maintaining specified SNR and SFDR performance. This enables direct undersampling of IF signals in the L-band and lower C-band without external anti-aliasing filtering - a key capability confirmed in the datasheet's "Analog Input" section and Figure 6 test circuit.
Does the LTC2141IUP-12#TRPBF support both differential and single-ended clock inputs?
Yes, the LTC2141IUP-12#TRPBF supports both differential (ENC+/ENC–) and single-ended (ENC+ driven, ENC– tied to GND) encode clock inputs. In differential mode, it achieves 0.08psRMS jitter; in single-ended mode, jitter increases to 0.10psRMS. Both modes are fully characterized and guaranteed over temperature, as specified in the "Analog Input" table under tJITTER parameter.
How does the PAR/SER pin affect the functionality of the LTC2141IUP-12#TRPBF?
The PAR/SER pin on the LTC2141IUP-12#TRPBF selects between serial programming mode (PAR/SER = GND) and parallel programming mode (PAR/SER = VDD). In serial mode, CS/SCK/SDI/SDO form a standard SPI interface for full register control. In parallel mode, those pins become dedicated logic inputs controlling basic functions like output format and power modes - reducing firmware overhead in resource-constrained systems.
What output interface options are available for the LTC2141IUP-12#TRPBF, and how are they selected?
The LTC2141IUP-12#TRPBF supports three output interface types: full-rate CMOS, double-data-rate (DDR) CMOS, and DDR LVDS. Selection is controlled via SPI register bits (in serial mode) or parallel logic inputs (in parallel mode), as defined in Table 2 of the datasheet. Output voltage swing is set by OVDD (1.2–1.8V for CMOS; 1.7–1.9V for LVDS), and LVDS mode enables on-chip 100Ω termination.
Is the LTC2141IUP-12#TRPBF pin-compatible with other members of the LTC214x family?
Yes, the LTC2141IUP-12#TRPBF shares identical 64-pin QFN packaging, pinout, and footprint with LTC2142-12 and LTC2140-12 variants. Differences are limited to sampling rate (40Msps), internal power optimization, and guaranteed AC performance specs - enabling drop-in replacement in existing layouts when adjusting for throughput or power requirements.
LTC2141IUP-12#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 64-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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#TRPBF FAQ
1.How can I place an order for LTC2141IUP-12#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2141IUP-12#TRPBF 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#TRPBF reliable?
The price and inventory of LTC2141IUP-12#TRPBF 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#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2141IUP-12#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2141IUP-12#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2141IUP-12#TRPBF?
LTC2141IUP-12#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2141IUP-12#TRPBF 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#TRPBF?
For technical support, including LTC2141IUP-12#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2141IUP-12#TRPBF requirements.
6.How does Aetrix verify that LTC2141IUP-12#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2141IUP-12#TRPBF 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#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2141IUP-12#TRPBF?
All LTC2141IUP-12#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2141IUP-12#TRPBF, 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#TRPBF part is unused and in its original packaging.
Return procedure for LTC2141IUP-12#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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