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Analog Devices Inc. LTC2242IUP-12#TRPBF
- Part No.:
- LTC2242IUP-12#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-WFQFN Exposed Pad
- Datasheet:
-
LTC2242IUP-12#TRPBF.pdf
- Description:
- IC ADC 12BIT PIPELINED 64QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,156
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Product details
Overview
LTC2242IUP-12#TRPBF from Analog Devices (formerly Linear Technology) is a 12-bit, 250Msps pipeline analog-to-digital converter optimized for high-frequency signal digitization in communications infrastructure. It delivers 65.4dB SNR, 78dB SFDR at 10MHz input, and ultralow 95fsRMS aperture jitter. Its dual-range ±0.5V/±1V differential analog input and flexible LVDS/CMOS output interface support IF undersampling in wireless base stations and cable head-end systems.
For engineers reviewing the LTC2242IUP-12#TRPBF datasheet, LTC2242IUP-12#TRPBF pinout, LTC2242IUP-12#TRPBF application, or LTC2242IUP-12#TRPBF equivalent, key selection criteria include full-power bandwidth (1.2GHz), INL (±1.0LSB typ), DNL (±0.4LSB typ), power dissipation (740mW), and QFN-64 package compatibility with high-speed PCB layout constraints.
Technical Context
The LTC2242IUP-12#TRPBF implements a five-stage pipelined ADC architecture with integrated sample-and-hold, correction logic, and flexible reference scaling. It supports both offset binary and 2's complement output formats, selectable via the MODE pin, and includes an optional clock duty cycle stabilizer to maintain performance across wide input clock duty cycles.
Digital outputs are configurable as differential LVDS, single-ended CMOS full-rate, or demultiplexed CMOS (interleaved or simultaneous update). The SENSE pin enables programmable input range selection (±0.5V to ±1V), while the LVDS pin selects output mode-LVDS, full-rate CMOS, or two demux CMOS buses-without changing PCB layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Sampling Rate | 250Msps - Enables real-time digitization of wideband RF signals up to 120MHz Nyquist zone. |
| Resolution & Linearity | 12-bit with no missing codes; ±1.0LSB INL (typ), ±0.4LSB DNL (typ) - Ensures accurate amplitude fidelity in linearization and spectral analysis. |
| Dynamic Performance | 65.4dB SNR (10MHz), 78dB SFDR (2nd/3rd harmonic) - Supports high-fidelity signal capture in demanding comms applications. |
| Aperture Jitter | 95fsRMS - Limits sampling-time uncertainty to preserve SNR at IF frequencies up to 240MHz. |
| Analog Input Bandwidth | 1.2GHz full-power bandwidth - Allows direct sampling of L-band and lower S-band signals without external amplification. |
| Power Dissipation | 740mW (CMOS mode), 975mW (LVDS mode) - Balances performance and thermal management in dense RF modules. |
| Supply Voltage | Single 2.5V analog supply (VDD), 0.5V–2.625V digital output supply (OVDD) - Simplifies power rail design and enables level-shifting to FPGA I/O banks. |
Pinout & Package
Package: 64-lead (9mm × 9mm) plastic QFN with exposed thermal pad (Pin 65 = GND), rated for –40°C to +85°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN+, AIN– (Pins 1–4) | Differential analog input | Accepts ±0.5V or ±1V differential signal; requires matched 50Ω termination for optimal SFDR. |
| ENC+, ENC– (Pins 17–18) | Differential encode clock input | Triggers conversion on edge transition; supports sine, PECL, LVDS, TTL, or CMOS drive with internal biasing. |
| DA0–DA11 / DB0–DB11 (Pins 21–24, 27–32, 35–36, 39–40, 43–48, 51–55) | CMOS digital output buses (A/B) | 12-bit parallel data paths; B bus active in demux modes; full-rate mode uses only A bus with DB0–DB11 high-Z. |
| D0+ / D0– to D11+ / D11– (Pins 21–24, 27–32, 37–38, 39–40, 43–48, 51–54) | LVDS digital output pairs | Differential 100Ω-terminated outputs; require AC-coupling and proper receiver termination for jitter-sensitive links. |
| LVDS (Pin 57) | Output mode select | Logic level determines interface: 0V = CMOS full-rate, VDD = LVDS, 1/3VDD = demux simultaneous, 2/3VDD = demux interleaved. |
| SENSE (Pin 59) | Input range programming | Connect to VCM for ±0.5V range, VDD for ±1V range, or external voltage (0.5–1.0V) for custom ±VSENSE range. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow aperture jitter (95fsRMS) | Enables high-SNR undersampling of IF signals up to 240MHz without external jitter cleanup circuitry. |
| Selectable ±0.5V / ±1V input range | Optimizes dynamic range utilization for varying signal amplitudes without external gain stages. |
| Three CMOS output configurations | Supports FPGA interfacing flexibility: full-rate (12-bit @ 250MHz), or two 12-bit buses @ 125MHz (interleaved/simultaneous). |
| Integrated clock duty cycle stabilizer | Maintains timing accuracy and SNR over 40%–60% input clock duty cycle variation-critical for recovered clocks. |
| Shutdown and nap modes | Reduces power to 1mW (sleep) or 28mW (nap) during idle periods-essential for power-constrained remote radio units. |
Applications
| Wireless Base Station Receiver | Cable Modem Termination System (CMTS) |
|---|---|
Use Scenario: Digitizing 70–250MHz IF signals from multi-carrier RF front-ends in LTE/5G macrocells. IC Role / Device Role / Timing Role: High-speed ADC capturing wide instantaneous bandwidth for digital predistortion (DPD) feedback loops. Use Value: 78dB SFDR prevents intermodulation distortion from masking adjacent channel interference in multi-tone DPD calibration. | Use Scenario: Downstream signal acquisition in DOCSIS 3.1/4.0 CMTS upstream receivers handling 5–204MHz spectrum. IC Role / Device Role / Timing Role: 250Msps sampling engine feeding FPGA-based OFDM demodulators with low-latency pipeline (5 cycles). Use Value: 65.4dB SNR ensures >40dB carrier-to-noise ratio for 4096-QAM symbol recovery under noisy ingress conditions. |
| Power Amplifier Linearization | Communications Test Equipment |
Use Scenario: Capturing PA output for real-time adaptive DPD in GaN-based mmWave transmitters. IC Role / Device Role / Timing Role: Feedback-path ADC synchronizing with transmit clock to enable sub-ns time alignment between Tx/Rx paths. Use Value: 95fsRMS jitter limits phase error to <0.1° at 2.6GHz, preserving closed-loop convergence stability. | Use Scenario: Signal analyzer front-end digitizing swept RF inputs up to 1GHz for spectral mask compliance testing. IC Role / Device Role / Timing Role: Wideband digitizer with 1.2GHz full-power bandwidth enabling direct sampling without image-reject mixers. Use Value: No missing codes and ±1.0LSB INL ensure traceable amplitude accuracy per IEEE 1057 standards for metrology-grade instruments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9230-250EBZ | 12-bit, 250Msps; 66.5dB SNR (typ), 79dB SFDR (typ); requires separate 1.8V/3.3V supplies; no integrated duty cycle stabilizer. | Higher SNR but lacks clock conditioning; better suited for lab-grade test equipment than field-deployed comms gear. | Choose AD9230-250EBZ when absolute SNR trumps system-level clock robustness and supply simplicity. |
| LTC2262IUP-12#TRPBF | 12-bit, 105Msps; 66.8dB SNR (typ), 80dB SFDR (typ); lower power (340mW); same QFN-64 package and pin-compatible footprint. | Lower sample rate limits Nyquist bandwidth to ~52MHz; ideal for cost-sensitive, lower-bandwidth DPD or spectrum monitoring. | Choose LTC2262IUP-12#TRPBF when system bandwidth requirements are ≤52MHz and thermal/power budgets are constrained. |
Compared with AD9230-250EBZ and LTC2262IUP-12#TRPBF, the LTC2242IUP-12#TRPBF uniquely combines 250Msps throughput, integrated clock duty cycle stabilization, and single 2.5V supply operation-making it optimal for compact, thermally sensitive, and clock-jitter-sensitive wireless infrastructure designs.
Availability
LTC2242IUP-12#TRPBF is available at Aetrix Electronics and suitable for wireless base station receivers, cable head-end systems, and power amplifier linearization requiring stable component supply across industrial temperature ranges (–40°C to +85°C).
Supply support for LTC2242IUP-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. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, communications, and industrial markets.
The LTC2242IUP-12#TRPBF belongs to Linear Technology's high-speed ADC product line, engineered specifically for broadband communications infrastructure where ultralow jitter, wide analog bandwidth, and flexible digital interfacing are critical.
FAQ
What is the operating temperature range for the LTC2242IUP-12#TRPBF?
The LTC2242IUP-12#TRPBF is specified for industrial operation from –40°C to +85°C, as indicated by the "I" grade in its part number. This rating is validated across all electrical specifications including SNR, SFDR, INL, and power consumption, making it suitable for outdoor wireless equipment and cable head-end cabinets without forced cooling.
Does the LTC2242IUP-12#TRPBF support both LVDS and CMOS output interfaces?
Yes, the LTC2242IUP-12#TRPBF supports three digital output configurations: differential LVDS, single-ended CMOS full-rate (12-bit @ 250MHz), and demultiplexed CMOS (two 12-bit buses @ 125MHz). Output mode is selected via the LVDS pin voltage, allowing hardware-configurable interface adaptation without firmware changes or PCB redesign.
How does the SENSE pin affect the analog input range of the LTC2242IUP-12#TRPBF?
The SENSE pin directly programs the LTC2242IUP-12#TRPBF's differential input range: connecting SENSE to VCM selects ±0.5V, to VDD selects ±1V, and to an external voltage between 0.5V and 1.0V selects ±VSENSE. This eliminates external gain-switching circuitry and preserves DC coupling integrity across multiple signal amplitude regimes.
What is the pipeline latency of the LTC2242IUP-12#TRPBF, and why does it matter?
The LTC2242IUP-12#TRPBF has a fixed 5-cycle pipeline latency in all output modes. This deterministic delay enables precise time alignment in closed-loop systems like digital predistortion, where feedback path timing must match transmit path latency to within one sample period for effective cancellation.
Can the LTC2242IUP-12#TRPBF operate with a single-ended clock input?
Yes, the LTC2242IUP-12#TRPBF accepts single-ended clock inputs on ENC+ while tying ENC– to a DC bias (e.g., 1.25V), though differential drive is recommended for best jitter performance. Internal termination and biasing allow compatibility with common clock sources including crystal oscillators, PLLs, and FPGA outputs without external level-shifting components.
LTC2242IUP-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):
- 250M
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- LVDS - Parallel, Parallel
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- Pipelined
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 2.375V ~ 2.625V
- Voltage - Supply, Digital:
- 2.375V ~ 2.625V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 64-QFN (9x9)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2242IUP-12#TRPBF FAQ
1.How can I place an order for LTC2242IUP-12#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2242IUP-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 LTC2242IUP-12#TRPBF reliable?
The price and inventory of LTC2242IUP-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 LTC2242IUP-12#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2242IUP-12#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2242IUP-12#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2242IUP-12#TRPBF?
LTC2242IUP-12#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2242IUP-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 LTC2242IUP-12#TRPBF?
For technical support, including LTC2242IUP-12#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2242IUP-12#TRPBF requirements.
6.How does Aetrix verify that LTC2242IUP-12#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2242IUP-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 LTC2242IUP-12#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2242IUP-12#TRPBF?
All LTC2242IUP-12#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2242IUP-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 LTC2242IUP-12#TRPBF part is unused and in its original packaging.
Return procedure for LTC2242IUP-12#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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