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Analog Devices Inc. LTC2220IUP#PBF
- Part No.:
- LTC2220IUP#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-WFQFN Exposed Pad
- Datasheet:
-
LTC2220IUP#PBF.pdf
- Description:
- IC ADC 12BIT PIPELINED 64QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,050
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Product details
Overview
LTC2220IUP#PBF from Analog Devices (formerly Linear Technology) is a 12-bit, 170Msps analog-to-digital converter optimized for high-frequency signal digitization in communications infrastructure. It delivers 67.5dB SNR and 80dB SFDR up to 170MHz input frequency, with ultralow 0.15psRMS aperture jitter, ±0.4LSB INL (typ), and operates from a single 3.3V supply. It supports LVDS or CMOS digital outputs and is used in cable head-end systems and power amplifier linearization.
For engineers reviewing the LTC2220IUP#PBF datasheet, LTC2220IUP#PBF pinout, LTC2220IUP#PBF application, or LTC2220IUP#PBF equivalent, key selection criteria include sampling rate (170Msps), AC performance at IF frequencies, flexible output interface options (LVDS/CMOS/demux), input range selection (±0.5V or ±1V), and industrial temperature range (–40°C to +85°C).
Technical Context
The LTC2220IUP#PBF employs a 12-bit pipelined ADC architecture with integrated sample-and-hold, correction logic, and flexible reference management. Its 775MHz full-power bandwidth enables undersampling of IF signals, while the optional clock duty cycle stabilizer maintains performance across wide input duty cycles.
Digital interface flexibility includes differential LVDS outputs or three CMOS configurations: full-rate single bus, or demultiplexed dual buses with interleaved or simultaneous update timing. Output swing is programmable from 0.5V to 3.6V via OVDD, and the ENC+/ENC– inputs accept PECL, LVDS, TTL, or CMOS clock sources.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with no missing codes over temperature - guarantees monotonicity and full code coverage in closed-loop control or measurement systems. |
| Sample Rate | 170Msps - supports Nyquist sampling of signals up to 85MHz or undersampling of higher IFs (e.g., 140–250MHz) in communications receivers. |
| SNR | 67.5dB at 140MHz input (2V range, LVDS mode) - enables high-fidelity digitization of wideband modulated signals like DOCSIS 3.1 upstream channels. |
| SFDR | 80dB at 170MHz input (2V range, LVDS mode) - critical for detecting low-level interferers adjacent to strong carriers in spectrum monitoring. |
| Aperture Jitter | 0.15psRMS - limits noise floor degradation when undersampling RF/IF signals above 100MHz. |
| INL / DNL | ±0.4LSB / ±0.3LSB (typ) - ensures accurate amplitude representation for calibration-critical applications like digital predistortion feedback paths. |
| Supply | Single 3.3V analog supply (VDD), separate 0.5–3.6V output supply (OVDD) - simplifies power design and enables interface voltage translation to FPGA I/O banks. |
Pinout & Package
64-pin 9mm × 9mm plastic QFN package with exposed thermal pad (Pin 65 = GND). Requires soldering of exposed pad to PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN+, AIN– (Pins 1–4) | Differential analog input | Accepts ±0.5V or ±1V differential input; common-mode range 1.0–1.9V - matched pair routing required for optimal SFDR. |
| ENC+, ENC– (Pins 17–18) | Encode clock inputs | Differential or single-ended clock interface; supports PECL/LVDS/TTL/CMOS - duty cycle stabilizer enabled via MODE pin improves timing margin. |
| LVDS (Pin 57) | Output mode select | 0V = full-rate CMOS; VDD = LVDS mode; 1/3VDD or 2/3VDD = demux CMOS - configures physical layer without changing PCB layout. |
| MODE (Pin 58) | Output format & stabilizer control | Selects offset binary/2's complement and enables/disables clock duty cycle stabilizer - affects FPGA data alignment and setup/hold timing. |
| SENSE (Pin 59) | Input range programming | Connect to VCM → ±0.5V range; to VDD → ±1V range; external voltage → ±VSENSE - sets full-scale without external resistors. |
| VCM (Pin 60) | Reference bias output | 1.6V buffered common-mode output - provides stable bias for differential drivers or external amplifiers. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow aperture jitter | 0.15psRMS enables clean undersampling of 140–250MHz IF signals without significant SNR penalty. |
| Flexible digital interface | LVDS, full-rate CMOS, or demux CMOS (interleaved/simultaneous) - matches diverse FPGA I/O standards and reduces data bus width. |
| Programmable input range | ±0.5V or ±1V selected via SENSE pin - eliminates need for external gain stages in multi-range receiver front-ends. |
| Integrated clock duty cycle stabilizer | Compensates for non-50% clock duty cycles without external circuitry - improves timing margin in systems using crystal oscillators or PLLs with asymmetric outputs. |
| Low power at full speed | 890mW at 170Msps (CMOS mode) - reduces thermal load in dense RF modules compared to competing 12-bit ADCs. |
Applications
| Cable Head-End Systems | Power Amplifier Linearization |
|---|---|
Use Scenario: Digitizing upstream DOCSIS 3.1 burst signals in cable modem termination systems (CMTS) with 5–85MHz bandwidth and high dynamic range requirements. IC Role / Device Role / Timing Role: High-speed ADC capturing time-division multiplexed upstream bursts with precise timing alignment to downstream clocks. Use Value: 80dB SFDR prevents intermodulation distortion masking weak upstream signals; 170Msps sampling supports 85MHz Nyquist bandwidth with margin for filtering. | Use Scenario: Capturing feedback samples from PA output in digital predistortion (DPD) loops for GaN-based wireless base station transmitters. IC Role / Device Role / Timing Role: Wideband observation receiver ADC synchronizing to transmit clock for real-time error vector magnitude (EVM) computation. Use Value: 67.5dB SNR at 140MHz ensures accurate capture of out-of-band distortion products; 0.15psRMS jitter preserves phase coherence in adaptive DPD algorithms. |
| Communications Test Equipment | Wireless Broadband Infrastructure |
Use Scenario: Signal analysis in vector signal analyzers (VSA) requiring high-fidelity digitization of modulated waveforms (e.g., 256-QAM, OFDM) up to 200MHz bandwidth. IC Role / Device Role / Timing Role: Front-end ADC in real-time spectrum analyzers performing FFT-based spectral monitoring and modulation analysis. Use Value: No missing codes and ±0.4LSB INL ensure accurate amplitude fidelity across full dynamic range; LVDS outputs reduce EMI in high-density instrument backplanes. | Use Scenario: IF sampling in massive MIMO active antenna units (AAUs) supporting sub-6GHz 5G NR with wide instantaneous bandwidth. IC Role / Device Role / Timing Role: Dual-channel or time-interleaved ADC subsystem digitizing complex IF signals (e.g., 1.8–2.2GHz) downconverted to 100–300MHz band. Use Value: 775MHz full-power bandwidth allows direct sampling of high-IF architectures; industrial temp grade (–40°C to +85°C) ensures reliability in outdoor radio enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9230-170EBZ | 12-bit, 170Msps; requires external reference; 1.8V/3.3V dual supply; no integrated duty cycle stabilizer | Higher power (1.2W); less flexible input range control; no SENSE pin for automatic range selection | Preferred when external precision reference is already available and duty cycle stabilization is handled externally. |
| LTC2221IUP#PBF | 12-bit, 135Msps; identical pinout, package, and feature set except lower max sample rate and reduced power (660mW) | Lower SFDR (75dB @ 140MHz) and SNR (65.8dB @ 140MHz); suitable where 135Msps suffices and thermal budget is tighter | Drop-in replacement when system bandwidth requirement is ≤67.5MHz and lower power consumption is prioritized. |
Compared with AD9230-170EBZ, the LTC2220IUP#PBF offers integrated reference programming and clock duty cycle stabilization, reducing BOM count and layout complexity; versus LTC2221IUP#PBF, it delivers 35Msps higher throughput and 2.5dB better SFDR at 140MHz, justifying its use in demanding wideband IF sampling.
Availability
LTC2220IUP#PBF is available at Aetrix Electronics and suitable for cable head-end systems, wireless broadband infrastructure, and communications test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC2220IUP#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 LTC2220IUP#PBF belongs to ADI's high-speed precision ADC product line, designed specifically for demanding communications infrastructure applications requiring wide bandwidth, low jitter, and flexible digital interfacing in harsh thermal environments.
FAQ
What is the maximum input frequency supported by the LTC2220IUP#PBF with usable SNR?
The LTC2220IUP#PBF maintains 67.5dB SNR up to 140MHz input frequency (2V range, LVDS mode), and retains 66.1dB SNR at 250MHz. Its 775MHz full-power bandwidth allows undersampling of signals well beyond the Nyquist limit, making it suitable for IF sampling in communications receivers where aliasing is managed in DSP.
Does the LTC2220IUP#PBF require an external reference voltage?
No - the LTC2220IUP#PBF includes an internal 1.6V reference buffer (VCM pin) and supports fully self-contained operation. Input range (±0.5V or ±1V) is selected via the SENSE pin. External references can be applied to SENSE for custom ranges between 0.5V and 1V, but are not required for standard operation.
How does the MODE pin affect the output data format of the LTC2220IUP#PBF?
The MODE pin selects both output coding and clock stabilizer state: tied to 0V → offset binary + stabilizer off; 1/3VDD → offset binary + stabilizer on; 2/3VDD → 2's complement + stabilizer on; VDD → 2's complement + stabilizer off. This allows FPGA firmware to configure data alignment and timing robustness independently.
Can the LTC2220IUP#PBF operate in a shutdown or low-power mode?
Yes - the LTC2220IUP#PBF supports three low-power states controlled by SHDN and OE pins: normal operation (SHDN=GND, OE=GND), high-impedance output mode (SHDN=GND, OE=VDD), nap mode (SHDN=VDD, OE=GND, 35mW), and sleep mode (SHDN=VDD, OE=VDD, 2mW), enabling dynamic power management in battery-backed or thermally constrained systems.
What package type and thermal considerations apply to the LTC2220IUP#PBF?
The LTC2220IUP#PBF uses a 64-pin 9mm × 9mm plastic QFN with exposed thermal pad (Pin 65). The pad must be soldered to a PCB ground plane with ≥6 thermal vias for effective heat dissipation. At 890mW power dissipation, proper thermal design is essential to maintain junction temperature within –40°C to +85°C industrial operating range.
LTC2220IUP#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):
- 170M
- Number of Inputs:
- 1
- Input Type:
- Differential, Single Ended
- 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:
- 3.1V ~ 3.5V
- Voltage - Supply, Digital:
- 3.1V ~ 3.5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 64-QFN (9x9)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2220IUP#PBF FAQ
1.How can I place an order for LTC2220IUP#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2220IUP#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 LTC2220IUP#PBF reliable?
The price and inventory of LTC2220IUP#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2220IUP#PBF is usually 5 days.
3.What payment methods are accepted for LTC2220IUP#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2220IUP#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2220IUP#PBF?
LTC2220IUP#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2220IUP#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 LTC2220IUP#PBF?
For technical support, including LTC2220IUP#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2220IUP#PBF requirements.
6.How does Aetrix verify that LTC2220IUP#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2220IUP#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 LTC2220IUP#PBF meets industry standards.
7.What is the process for return or replacement of LTC2220IUP#PBF?
All LTC2220IUP#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2220IUP#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 LTC2220IUP#PBF part is unused and in its original packaging.
Return procedure for LTC2220IUP#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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