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Analog Devices Inc. LTC2216IUP#PBF
- Part No.:
- LTC2216IUP#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-WFQFN Exposed Pad
- Datasheet:
-
LTC2216IUP#PBF.pdf
- Description:
- IC ADC 16BIT PIPELINED 64QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,186
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Product details
Overview
LTC2216IUP#PBF from Analog Devices (formerly Linear Technology) is a 16-bit, 80Msps low-noise analog-to-digital converter optimized for high-frequency undersampling in communications receivers and spectrum analysis systems. It features 81.3dBFS SNR, 100dB spurious-free dynamic range (SFDR), 85fsRMS aperture jitter, 2.75VP-P fixed input range, and 400MHz full-power bandwidth - enabling digitization of IF signals up to 140MHz with high fidelity.
For engineers reviewing the LTC2216IUP#PBF datasheet, LTC2216IUP#PBF pinout, LTC2216IUP#PBF application, or LTC2216IUP#PBF equivalent, key selection considerations include its industrial temperature range (–40°C to +85°C), LVDS/CMOS output flexibility, internal dither capability, clock duty cycle stabilizer, and compatibility with demanding wideband RF signal chains requiring >95dB SFDR at 70MHz.
Technical Context
The LTC2216IUP#PBF employs a 16-bit pipelined ADC architecture with integrated sample-and-hold and internal reference generation. Its 85fsRMS aperture jitter enables high-fidelity undersampling of RF inputs up to 400MHz, while the optional clock duty cycle stabilizer maintains performance across non-50% clock waveforms.
Dual-output mode support includes differential LVDS (standard or low-power) and configurable CMOS (full-rate or demultiplexed), with separate OVDD supply allowing 0.5V–3.6V output swing. The device supports internal dither and data randomization to suppress harmonic artifacts in narrowband applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution & Sample Rate | 16-bit, 80Msps - delivers 1280MSPS effective throughput in demux CMOS mode; sufficient for Nyquist-sampled baseband or undersampled IF signals up to 140MHz. |
| SNR / SFDR | 81.3dBFS SNR, 100dB SFDR (at 5MHz); >95dB SFDR at 70MHz - ensures clean spectral representation for LTE/WiMAX receiver I/Q digitization. |
| Aperture Jitter | 85fsRMS - limits noise floor degradation when undersampling high-frequency inputs (e.g., 70MHz IF), preserving ENOB >13.2 bits. |
| Analog Input Range | 2.75VP-P differential - fixed full-scale range simplifies front-end gain staging and eliminates external reference trimming. |
| Full-Power Bandwidth | 400MHz - supports direct sampling of L-band and S-band IF signals without external anti-alias filtering beyond basic passive networks. |
| Supply & Power | Single 3.3V analog supply; 970mW typical power dissipation - compatible with standard FPGA/ASIC I/O rails and thermal budgets in compact RF modules. |
| Operating Temperature | –40°C to +85°C - qualified for industrial and outdoor wireless infrastructure deployments including cellular base station remote radio units. |
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 |
|---|---|---|
| AIN+, AIN– | Differential analog input | Accepts 2.75VP-P signal with 1.575V common-mode; 400MHz bandwidth enables direct IF sampling without transformer coupling. |
| ENC+, ENC– | Differential encode clock input | Sample edge triggered on ENC+ rising / ENC– falling; supports PECL/LVDS/TTL/CMOS; duty cycle stabilizer improves timing margin. |
| SHDN | Power shutdown control | Active-high logic input; places analog core in low-power state (17mW) and outputs in high-Z - enables rapid power cycling in TDD systems. |
| DITH | Internal dither enable | High = enables on-chip dither to break up harmonic correlation; critical for improving SFDR in narrowband FFT-based spectrum analyzers. |
| VCM | Common-mode bias output | 1.575V buffered reference for input termination networks; requires ≥2.2μF ceramic bypass to minimize noise coupling into analog path. |
| SENSE | Reference mode select | Tied to VDD selects internal 2.5V bandgap; supports external 2.5V/1.25V references - maintains 2.75VP-P full-scale regardless of reference choice. |
| DB0–DB15 / DA0–DA15 | Digital output buses (demux mode) | B and A buses deliver interleaved 16-bit words at 40MHz each - reduces EMI and routing density vs full-rate 80MHz CMOS interface. |
| OVDD (Pins 32, 49) | Digital output supply | Independent 0.5V–3.6V rail allows level-shifting to match FPGA I/O standards (e.g., 1.8V, 2.5V, 3.3V) without level translators. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low aperture jitter (85fsRMS) | Enables high-SFDR undersampling of 70MHz+ IF signals without external jitter cleanup circuits or ultra-low-noise clocks. |
| Optional internal dither | Breaks up harmonic correlation in periodic signals (e.g., radar pulses), raising SFDR by up to 20dB at –25dBFS input levels. |
| Configurable digital outputs | LVDS (standard/low-power) or CMOS (full-rate/demux) - supports system-level trade-offs between EMI, power, and FPGA interface constraints. |
| Integrated clock duty cycle stabilizer | Allows use of asymmetric clock sources (e.g., PLL outputs, crystal oscillators with poor duty cycle) without degrading AC performance. |
| Industrial temperature grade (–40°C to +85°C) | Validated operation across extended thermal range - suitable for uncooled outdoor small cells and military comms equipment. |
| Pin-compatible with LTC2208/LTC2217 | Enables drop-in migration between 65Msps (LTC2215), 80Msps (LTC2216), and 105Msps (LTC2217) variants - simplifies platform scalability. |
Applications
| Cellular Base Station Receiver | Spectrum Analyzer Front-End |
|---|---|
Use Scenario: Digitizing 70MHz LTE FDD uplink IF in macrocell remote radio head with 20MHz channel bandwidth. IC Role / Device Role / Timing Role: Primary ADC capturing I/Q data stream; synchronized to system clock with duty cycle stabilization for robust timing margin. Use Value: 100dB SFDR prevents adjacent-channel interference masking weak signals; 81.3dBFS SNR ensures <0.5dB EVM degradation at 256-QAM. |
Use Scenario: High-resolution real-time spectrum capture in portable RF analyzer with 100MHz instantaneous bandwidth. IC Role / Device Role / Timing Role: Wideband digitizer feeding FPGA-based FFT engine; internal dither enabled to suppress spectral leakage in narrow resolution bandwidths. Use Value: 400MHz full-power bandwidth eliminates need for active pre-filtering; 85fsRMS jitter preserves frequency resolution below 1kHz RBW. |
| Defense Radar IF Digitizer | ATE for RF Power Amplifiers |
Use Scenario: Sampling 140MHz pulsed radar IF output in EW system requiring >90dB SFDR across 100MHz span. IC Role / Device Role / Timing Role: High-speed ADC in coherent receive chain; SHDN pin used for pulse-gated acquisition to reduce average power. Use Value: >95dB SFDR at 140MHz (with dither) resolves closely spaced jammer tones; industrial temp rating supports vehicle-mounted deployment. |
Use Scenario: Capturing modulated PA output for ACLR and EVM validation in production test rack with 80MHz analysis bandwidth. IC Role / Device Role / Timing Role: Precision digitizer interfaced to PXIe FPGA controller via LVDS; OVDD set to 2.5V for low-noise FPGA I/O compatibility. Use Value: 16-bit resolution captures PA compression knee with <0.1dB accuracy; 970mW power enables dense multi-channel ATE configurations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9268BCPZ-80 | 16-bit, 80Msps; JESD204B serial output; 1.8V supply; 775mW; no internal dither | Requires FPGA with JESD204B PHY; lower power but lacks dither and duty cycle stabilizer | Preferred when serial interface and lower power outweigh need for dither/SFDR optimization |
| LTC2217IUP#PBF | 16-bit, 105Msps; same pinout/package; 1150mW; identical feature set (dither, DCS, LVDS/CMOS) | Higher sample rate enables wider instantaneous bandwidth or improved oversampling ratio | Select when system requires >80Msps throughput while retaining identical layout and firmware compatibility |
Compared with AD9268BCPZ-80 and LTC2217IUP#PBF, the LTC2216IUP#PBF uniquely balances 80Msps performance with analog-centric features - including internal dither, clock duty cycle stabilization, and flexible CMOS/LVDS outputs - making it optimal for cost-sensitive, FPGA-based wideband receivers where parallel interface simplicity and SFDR headroom are prioritized over serial connectivity or maximum sample rate.
Availability
LTC2216IUP#PBF is available at Aetrix Electronics and suitable for cellular base stations, spectrum analyzers, defense radar systems, and automated test equipment requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for LTC2216IUP#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 DSP solutions, serving precision instrumentation, communications, and industrial markets.
The LTC2216IUP#PBF belongs to Linear's high-speed ADC product line, designed specifically for wideband communications infrastructure requiring exceptional dynamic range, low jitter, and robust operation in thermally demanding environments.
FAQ
What is the operating temperature range of the LTC2216IUP#PBF?
The LTC2216IUP#PBF is rated for industrial operation from –40°C to +85°C. This range is validated per the datasheet's "Operating Temperature Range" specification for the "I" grade, ensuring reliable performance in outdoor wireless infrastructure, defense electronics, and industrial test equipment without derating.
Does the LTC2216IUP#PBF support both LVDS and CMOS digital outputs?
Yes, the LTC2216IUP#PBF supports three output configurations: differential LVDS (standard or low-power mode) and single-ended CMOS (full-rate or demultiplexed). Output mode is selected via the LVDS pin (Pin 61); CMOS mode allows OVDD to be set from 0.5V to 3.6V for direct FPGA I/O matching.
How does the internal dither function improve performance in the LTC2216IUP#PBF?
When enabled via the DITH pin (Pin 20), the LTC2216IUP#PBF injects controlled noise to decorrelate quantization harmonics. At –25dBFS input, dither raises SFDR by up to 20dB (e.g., from 105dBFS to 115dBFS), which is critical for spectrum analysis and radar applications where spurious-free resolution determines measurement fidelity.
Is the LTC2216IUP#PBF pin-compatible with other devices in the LTC22xx family?
Yes, the LTC2216IUP#PBF is pin-compatible with the LTC2208 and LTC2217, sharing the same 64-pin QFN footprint and signal assignments. This enables hardware reuse across designs targeting 65Msps (LTC2215), 80Msps (LTC2216), and 105Msps (LTC2217) sample rates without PCB redesign.
What is the purpose of the SENSE pin on the LTC2216IUP#PBF?
The SENSE pin (Pin 1) selects the reference configuration: tied to VDD enables the internal 2.5V bandgap reference, while an external 2.5V or 1.25V reference can be applied. In all cases, the LTC2216IUP#PBF maintains a fixed 2.75VP-P full-scale input range - simplifying analog front-end design and eliminating gain calibration.
LTC2216IUP#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:
- 16
- Sampling Rate (Per Second):
- 80M
- 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:
- 3.135V ~ 3.465V
- Voltage - Supply, Digital:
- 3.135V ~ 3.465V
- Features:
- PGA
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 64-QFN (9x9)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2216IUP#PBF FAQ
1.How can I place an order for LTC2216IUP#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2216IUP#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 LTC2216IUP#PBF reliable?
The price and inventory of LTC2216IUP#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2216IUP#PBF is usually 5 days.
3.What payment methods are accepted for LTC2216IUP#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2216IUP#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2216IUP#PBF?
LTC2216IUP#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2216IUP#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 LTC2216IUP#PBF?
For technical support, including LTC2216IUP#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2216IUP#PBF requirements.
6.How does Aetrix verify that LTC2216IUP#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2216IUP#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 LTC2216IUP#PBF meets industry standards.
7.What is the process for return or replacement of LTC2216IUP#PBF?
All LTC2216IUP#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2216IUP#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 LTC2216IUP#PBF part is unused and in its original packaging.
Return procedure for LTC2216IUP#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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