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Analog Devices Inc. LTC2216CUP#PBF
- Part No.:
- LTC2216CUP#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-WFQFN Exposed Pad
- Datasheet:
-
LTC2216CUP#PBF.pdf
- Description:
- IC ADC 16BIT PIPELINED 64QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,698
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Product details
Overview
LTC2216CUP#PBF from Analog Devices (formerly Linear Technology) is a 16-bit, 80Msps analog-to-digital converter optimized for high-frequency undersampling in communications and instrumentation systems. It features 81.3dBFS SNR, 100dB SFDR at 5MHz input, 85fsRMS aperture jitter, 2.75VP-P fixed input range, and 400MHz full-power bandwidth - enabling direct RF sampling up to 140MHz with dither-enabled SFDR >110dBc.
For engineers reviewing the LTC2216CUP#PBF datasheet, LTC2216CUP#PBF pinout, LTC2216CUP#PBF application, or LTC2216CUP#PBF equivalent, key selection criteria include its LVDS/CMOS dual-output flexibility, internal clock duty cycle stabilizer, optional dither and data randomization, and compatibility with wideband IF receivers requiring <±3.5LSB INL and single 3.3V supply operation.
Technical Context
The LTC2216CUP#PBF employs a 16-bit pipelined ADC core with integrated sample-and-hold, internal 2.5V bandgap reference (selectable via SENSE pin), and programmable output format (LVDS or CMOS, full-rate or demultiplexed). Its 85fsRMS aperture jitter enables high-fidelity undersampling of signals up to 140MHz without external jitter cleanup.
Digital interface control includes dedicated MODE, LVDS, RAND, and DITH pins; ENC+/ENC– accept differential or single-ended clocks (PECL/LVDS/TTL/CMOS); and output swing is configurable via OVDD (0.5V–3.6V for CMOS, 3.0V–3.6V for LVDS). The device supports shutdown mode with 17mW power consumption.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution & Speed | 16-bit, 80Msps - delivers 1.28Gbps raw data throughput with Nyquist zone coverage up to 40MHz or 1st-zone undersampling up to 140MHz. |
| SNR / SFDR | 81.3dBFS SNR, 100dB SFDR (5MHz) - ensures high dynamic range for multi-carrier cellular and spectrum analysis applications. |
| Aperture Jitter | 85fsRMS - limits noise floor degradation when sampling high-frequency inputs (e.g., 70MHz IF yields >80dBFS SNR). |
| Analog Input | 2.75VP-P differential, 400MHz –3dB bandwidth - supports transformer-coupled or balun-driven RF/IF inputs without external amplification. |
| Power Consumption | 970mW at 80Msps (CMOS mode, 3.3V) - optimized for thermal management in dense RF front-ends and ATE systems. |
| Supply & Interface | Single 3.3V analog supply (VDD); separate OVDD (0.5–3.6V) for digital outputs - enables level-shifting to FPGA I/O banks or ASIC interfaces. |
| Operating Temp | 0°C to +70°C - qualified for commercial-grade base station radios, test equipment, and medical imaging subsystems. |
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 performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN+, AIN– | Differential analog input | Accepts 2.75VP-P signal with 1.575V common-mode; 9.1pF capacitance in sample mode enables direct transformer coupling. |
| ENC+, ENC– | Differential encode clock input | Sample edge-triggered on ENC+ rising/ENC– falling; supports 5–500ns pulse width and internal duty cycle stabilization. |
| SHDN | Shutdown control | Active-high: places analog core in standby (17mW) and forces digital outputs to high-Z - enables rapid power cycling in burst-mode systems. |
| DITH | Internal dither enable | High = enables on-chip dither to improve SFDR by >10dB at low input levels (e.g., –25dBFS), critical for radar pulse detection. |
| LVDS, MODE | Output configuration | LVDS = high/low-power LVDS or CMOS; MODE = selects full-rate (D0–D15) or demuxed (DA0–DA15/DB0–DB15) CMOS bus - simplifies FPGA resource mapping. |
| VCM | Common-mode bias output | 1.575V ±0.1V reference for external ADC driver biasing; requires ≥2.2μF ceramic bypass to minimize noise coupling into analog path. |
| SENSE | Reference select | Tied to VDD → internal 2.5V bandgap; accepts 1.25V/2.5V external reference - maintains 2.75VP-P full-scale regardless of reference choice. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low aperture jitter | 85fsRMS enables clean undersampling of 70MHz+ IF signals without external clock cleaning - reduces BOM cost vs. jitter-attenuator solutions. |
| Configurable digital interface | LVDS (standard/low-power) or CMOS (full/demuxed) outputs with OVDD-adjustable swing - matches diverse FPGA/ASIC I/O standards without level shifters. |
| Integrated clock duty cycle stabilizer | Allows high-performance operation with 40–60% clock duty cycle - eliminates need for external duty-cycle correction circuits in PLL-based clock trees. |
| Optional internal dither & randomizer | DITH and RAND pins enable real-time SFDR enhancement (>110dBc at –25dBFS) and spectral spreading - improves spurious-free operation in sensitive comms receivers. |
| Pin-compatible upgrade path | Direct replacement for LTC2208 (14-bit, 65Msps) and LTC2217 (16-bit, 105Msps) - allows scalable ADC performance within same PCB layout. |
Applications
| Cellular Base Station Receiver | Spectrum Analyzer Front-End |
|---|---|
|
Use Scenario: Digitizing 20–40MHz wide LTE/FDD-TDD IF signals centered at 70–140MHz in macro/micro base station transceivers. IC Role / Device Role / Timing Role: High-speed ADC capturing wide instantaneous bandwidth with minimal noise floor degradation and spurious generation. Use Value: 100dB SFDR and 85fsRMS jitter preserve EVM and ACLR performance across multi-carrier deployments without analog pre-filtering. |
Use Scenario: Real-time digitization of 0–40MHz span signals in portable and benchtop spectrum analyzers with >100dB dynamic range. IC Role / Device Role / Timing Role: Primary ADC in swept-tuned or FFT-based architectures requiring low phase noise and high SFDR at varying input frequencies. Use Value: Dither-enabled >115dBc SFDR at –25dBFS enables accurate detection of weak adjacent-channel signals buried in noise floor. |
| ATE Digital Test Instrumentation | Medical Ultrasound Beamformer |
|
Use Scenario: High-precision waveform capture in automated test equipment for RF IC validation, requiring repeatable amplitude and phase linearity. IC Role / Device Role / Timing Role: Reference-grade digitizer for stimulus-response measurement with <±3.5LSB INL and <±1LSB DNL (no missing codes). Use Value: 81.3dBFS SNR and 1.575V VCM output simplify driver design and ensure traceable measurement uncertainty down to –80dBFS. |
Use Scenario: Channel-level digitization of 5–15MHz echo return signals in phased-array ultrasound systems with beamforming DSP. IC Role / Device Role / Timing Role: Low-jitter, low-noise ADC enabling high-resolution time-of-flight measurements and harmonic rejection. Use Value: 400MHz bandwidth supports fundamental and second-harmonic imaging modes; 970mW power fits thermally constrained probe electronics. |
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; 77dBFS SNR, 92dB SFDR; requires external reference and clock buffer; 1.8V/3.3V dual supply. | Lower dynamic range; higher system complexity due to external support circuitry; suited for cost-sensitive industrial DAQ over RF comms. | Select when lower power (540mW) and JESD204B serial interface are prioritized over SFDR/jitter performance. |
| LTC2217CUP#PBF | 16-bit, 105Msps; 80.5dBFS SNR, 95dB SFDR; identical pinout/package; higher power (1220mW); same dither/randomizer features. | Higher speed but reduced SFDR at 70MHz+; suitable for wider instantaneous bandwidth needs where 105Msps is mandatory. | Choose for upgrade path requiring >80Msps while retaining PCB layout, firmware, and driver compatibility. |
Compared with AD9268BCPZ-80 and LTC2217CUP#PBF, the LTC2216CUP#PBF delivers superior SFDR (100dB vs. 92/95dB) and lower jitter (85fs vs. 100+/95fs), making it optimal for RF receiver front-ends where spurious-free dynamic range is critical - while maintaining pin-compatibility with both alternatives for flexible design reuse.
Availability
LTC2216CUP#PBF is available at Aetrix Electronics and suitable for cellular infrastructure, test instrumentation, and medical imaging systems requiring stable component supply, long-term obsolescence management, and traceable lot-level documentation.
Supply support for LTC2216CUP#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 RF ICs, serving precision instrumentation, communications, and industrial markets.
The LTC2216CUP#PBF belongs to Linear's ultra-low-jitter, high-SFDR ADC family designed specifically for demanding RF/IF digitization in wireless infrastructure, defense EW systems, and high-end ATE - emphasizing noise floor integrity and spurious suppression over raw speed alone.
FAQ
What is the maximum analog input frequency supported by the LTC2216CUP#PBF?
The LTC2216CUP#PBF has a 400MHz full-power bandwidth (–3dB point), enabling reliable digitization of analog inputs up to 140MHz in undersampling configurations. At 70MHz input, it maintains 80.2dBFS SNR and 97dBc SFDR (dither off), confirming usable performance well beyond its Nyquist frequency of 40MHz.
Does the LTC2216CUP#PBF require an external reference voltage?
No - the LTC2216CUP#PBF includes an internal 2.5V bandgap reference. When the SENSE pin is tied to VDD, the device uses this internal reference to set a fixed 2.75VP-P input range. An external 1.25V or 2.5V reference may be applied to SENSE for alternative calibration schemes, but it is not required for standard operation.
How does the clock duty cycle stabilizer function in the LTC2216CUP#PBF?
The LTC2216CUP#PBF's internal clock duty cycle stabilizer corrects non-50% ENC+/ENC– duty cycles in real time, allowing high-performance sampling (≤85fsRMS jitter) even with 40–60% duty cycle clocks. This eliminates the need for external duty-cycle correction ICs in PLL-based clock distribution networks feeding the ADC.
Can the LTC2216CUP#PBF operate with CMOS outputs at 1.8V logic levels?
Yes - the LTC2216CUP#PBF supports CMOS output mode with OVDD adjustable from 0.5V to 3.6V. At OVDD = 1.8V, VOH is guaranteed ≥1.79V and VOL ≤0.1V under load, ensuring robust interfacing with 1.8V FPGA I/O banks without level-shifting components.
What is the power-down behavior of the LTC2216CUP#PBF when SHDN is asserted?
When SHDN is driven high, the LTC2216CUP#PBF disables its analog core (sample-and-hold, ADC pipeline, reference), reducing total power to 17mW. All digital outputs enter high-impedance state, and the device retains register settings. Wake-up settling to mid-scale occurs in <1.5ms, enabling low-latency burst-mode operation.
LTC2216CUP#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:
- 0°C ~ 70°C
- Supplier Device Package:
- 64-QFN (9x9)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2216CUP#PBF FAQ
1.How can I place an order for LTC2216CUP#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2216CUP#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 LTC2216CUP#PBF reliable?
The price and inventory of LTC2216CUP#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2216CUP#PBF is usually 5 days.
3.What payment methods are accepted for LTC2216CUP#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2216CUP#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2216CUP#PBF?
LTC2216CUP#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2216CUP#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 LTC2216CUP#PBF?
For technical support, including LTC2216CUP#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2216CUP#PBF requirements.
6.How does Aetrix verify that LTC2216CUP#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2216CUP#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 LTC2216CUP#PBF meets industry standards.
7.What is the process for return or replacement of LTC2216CUP#PBF?
All LTC2216CUP#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2216CUP#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 LTC2216CUP#PBF part is unused and in its original packaging.
Return procedure for LTC2216CUP#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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