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Analog Devices Inc. LTC2215IUP#TRPBF
- Part No.:
- LTC2215IUP#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-WFQFN Exposed Pad
- Datasheet:
-
LTC2215IUP#TRPBF.pdf
- Description:
- IC ADC 16BIT PIPELINED 64QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,872
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Product details
Overview
LTC2215IUP#TRPBF from Analog Devices (formerly Linear Technology) is a 16-bit, 65Msps low-noise analog-to-digital converter optimized for high-frequency signal digitization up to 400MHz full-power bandwidth. It features 81.5dBFS noise floor, 100dB spurious-free dynamic range (SFDR), and 85fsRMS aperture jitter. Designed for demanding communications infrastructure, it operates from a single 3.3V supply and supports LVDS or CMOS digital outputs with configurable data formatting.
For engineers reviewing the LTC2215IUP#TRPBF datasheet, LTC2215IUP#TRPBF pinout, LTC2215IUP#TRPBF application, or LTC2215IUP#TRPBF equivalent, key selection criteria include its guaranteed ±3.5LSB INL over –40°C to +85°C, dither-enabled SFDR improvement to 115dBFS at –25dBFS input, and pin-compatibility with LTC2208/LTC2217 for drop-in upgrades in wideband receiver designs.
Technical Context
The LTC2215IUP#TRPBF employs a 16-bit pipelined ADC core with integrated sample-and-hold, internal reference generator, and correction logic. Its analog input accepts differential signals with fixed 2.75VP-P range and 1.575V common-mode bias (VCM), supporting RF inputs up to 400MHz while maintaining 80dB common-mode rejection.
Digital interface flexibility includes selectable LVDS (standard or low-power) or CMOS output modes - the latter offering either full-rate (65MHz) or demultiplexed (32.5MHz) buses. Clock inputs accept differential (ENC+/ENC–) or single-ended waveforms, with an optional duty-cycle stabilizer enabling robust operation across 40%–60% clock duty cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 96dB theoretical SNR ceiling and precise amplitude quantization for spectral analysis and baseband I/Q sampling. |
| Sample Rate | 65Msps - enables Nyquist-limited capture of signals up to 32.5MHz in real-time sampling, or undersampling of IF signals up to 400MHz. |
| Noise Floor | 81.5dBFS - ensures >12 effective bits of resolution at low input levels, critical for detecting weak signals in spectrum analyzers and ATE. |
| SFDR | 100dB (2nd/3rd harmonic, 5MHz input) - suppresses spurious content that could mask adjacent-channel signals in cellular base station receivers. |
| Aperture Jitter | 85fsRMS - limits sampling uncertainty-induced noise, preserving SNR when digitizing high-frequency inputs beyond 100MHz. |
| Input Range | 2.75VP-P differential - simplifies front-end drive requirements by eliminating gain-setting resistors in transformer-coupled RF paths. |
| Supply | Single 3.3V analog (VDD) and independent 0.5V–3.6V digital output (OVDD) - decouples noise-sensitive analog circuitry from digital switching transients. |
| Power Dissipation | 700mW (CMOS mode) - balances performance and thermal load in dense RF module layouts without forced air cooling. |
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 supports direct IF sampling in LTE/WCDMA receivers. |
| ENC+, ENC– | Differential encode clock input | Edge-triggered sampling control; internal 6.2kΩ bias enables single-ended TTL/CMOS drive without external termination. |
| VCM | Common-mode bias output | 1.575V reference for analog input centering; requires ≥2.2μF ceramic bypass to minimize noise coupling into signal path. |
| SHDN | Shutdown control | Active-high logic input; places analog core in low-power state (17mW) and forces digital outputs to high-impedance for power-gating in portable test equipment. |
| DITH | Dither enable | Enables internal noise dither to improve SFDR by 10dB at –25dBFS input, mitigating harmonic distortion in narrowband signal analysis. |
| DB0–DB15 / DA0–DA15 | Demultiplexed CMOS data outputs | Two 16-bit buses running at 32.5MHz - reduce EMI and timing skew vs full-rate 65MHz bus, easing FPGA interface design. |
| CLKOUT+, CLKOUT– | LVDS clock output | Provides synchronized 65MHz clock replica for downstream logic; matched delay (tC–tD ≤ ±0.6ns) ensures deterministic data capture timing. |
| SENSE | Reference mode select | Tie to VDD for internal 2.5V bandgap reference; supports external 1.25V/2.5V references for system-level gain calibration traceability. |
Key Features
| Feature | Design Value |
|---|---|
| Optional internal dither | Improves SFDR by 10dB at –25dBFS input (to 115dBFS), reducing harmonic artifacts in spectrum analysis of low-level signals. |
| Configurable output interface | LVDS (standard/low-power) or CMOS (full-rate/demux) - allows trade-off between noise immunity, power, and FPGA pin count in embedded instrumentation. |
| Integrated clock duty cycle stabilizer | Enables high-performance sampling with 40%–60% clock duty cycles, relaxing clock generation requirements in cost-sensitive base station designs. |
| Guaranteed DC accuracy | ±3.5LSB INL and ±1LSB DNL (no missing codes) over –40°C to +85°C - ensures monotonicity and linearity for precision measurement applications. |
| Wide analog input bandwidth | 400MHz full-power bandwidth - supports direct sampling of 70MHz IF signals in military radar receivers without external amplification. |
| Low-power shutdown mode | Reduces power to 17mW while retaining configuration state - ideal for battery-powered handheld spectrum analyzers requiring rapid wake-up. |
Applications
| Cellular Base Station Receiver | Spectrum Analyzer Front-End |
|---|---|
|
Use Scenario: Digitizing 70MHz LTE IF signals in macrocell remote radio heads with minimal analog preprocessing. IC Role / Device Role / Timing Role: Primary ADC capturing I/Q data streams; aperture jitter <85fsRMS preserves EVM under 64-QAM modulation. Use Value: 100dB SFDR prevents adjacent-channel interference masking, enabling simultaneous multi-band monitoring without hardware reconfiguration. |
Use Scenario: High-resolution frequency-domain acquisition in benchtop analyzers requiring >90dB dynamic range across 0–100MHz span. IC Role / Device Role / Timing Role: Core digitizer in real-time FFT engine; 81.5dBFS noise floor sets system sensitivity floor for weak signal detection. Use Value: Internal dither option lifts SFDR to 115dBFS at low input levels, resolving harmonics buried 20dB below fundamental in EMI precompliance testing. |
| ATE for RF Power Amplifiers | Imaging System Data Acquisition |
|
Use Scenario: Capturing time-domain envelope and phase response of GaN PAs during production test, requiring fast settling after power cycling. IC Role / Device Role / Timing Role: High-fidelity waveform digitizer triggered by PA enable signal; mid-scale settling <1.5ms after wake-up. Use Value: Shutdown current of 17mW minimizes thermal drift during automated test sequences, improving measurement repeatability across 1000+ unit batches. |
Use Scenario: Digitizing ultrasound echo signals in portable medical imaging systems where size, power, and SNR are tightly constrained. IC Role / Device Role / Timing Role: Low-noise ADC interfaced to 12-bit DAC-based beamformer; 16-bit resolution enables 4× digital zoom without interpolation artifacts. Use Value: Single 3.3V supply and 700mW power dissipation allow integration into compact, fanless enclosures without compromising image contrast resolution. |
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-65 | 16-bit, 65Msps; 77dBFS SNR, 92dB SFDR; requires separate 1.8V/3.3V supplies; no internal dither. | Lower SFDR limits spurious-free analysis bandwidth; dual-supply requirement increases BOM count and layout complexity. | Preferred when lower power (380mW) outweighs SFDR requirements, e.g., in portable battery-operated receivers. |
| LTC2217IUP#TRPBF | 16-bit, 80Msps; identical pinout, package, and feature set; 82dBFS noise floor, 102dB SFDR at 5MHz. | Higher sample rate enables wider instantaneous bandwidth capture but increases FPGA data throughput and memory buffering needs. | Select when system architecture requires >65Msps sampling (e.g., 120MHz IF in 5G NR FR1) and board layout already accommodates LTC2215 footprint. |
Compared with AD9268BCPZ-65, the LTC2215IUP#TRPBF delivers 8dB higher SFDR and integrated dither for cleaner spectral analysis, while LTC2217IUP#TRPBF offers a pin-compatible speed upgrade-both alternatives retain the same QFN-64 package and thermal profile for seamless migration.
Availability
LTC2215IUP#TRPBF is available at Aetrix Electronics and suitable for cellular infrastructure, spectrum analysis, and automated test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC2215IUP#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 semiconductors.
The LTC2215IUP#TRPBF belongs to Linear's high-speed precision ADC product line, engineered specifically for wideband communications, instrumentation, and defense applications demanding ultra-low noise and high spurious-free dynamic range.
FAQ
What is the operating temperature range for the LTC2215IUP#TRPBF?
The LTC2215IUP#TRPBF is rated for industrial operation from –40°C to +85°C, as confirmed by its "I" grade designation and Absolute Maximum Ratings table. This range ensures reliable performance in outdoor base station cabinets and factory-floor ATE systems without derating.
Does the LTC2215IUP#TRPBF support both LVDS and CMOS output interfaces?
Yes, the LTC2215IUP#TRPBF supports both LVDS and CMOS output modes via the LVDS pin (Pin 61). When LVDS = high, differential LVDS outputs are active; when LVDS = low, CMOS outputs operate in either full-rate (65MHz) or demultiplexed (32.5MHz) configuration controlled by the MODE pin.
How does the internal dither function improve performance in the LTC2215IUP#TRPBF?
The LTC2215IUP#TRPBF's internal dither (enabled via DITH pin) adds calibrated noise to the analog input path, breaking up harmonic correlation and raising SFDR by up to 10dB - from 105dBFS to 115dBFS at –25dBFS input - which is critical for resolving low-level spectral components in spectrum analyzers.
Is the LTC2215IUP#TRPBF pin-compatible with other devices in the LTC22xx family?
Yes, the LTC2215IUP#TRPBF shares identical 64-pin QFN packaging and pinout with LTC2208 and LTC2217, enabling drop-in replacement in existing PCB layouts. This compatibility simplifies design upgrades - for example, swapping to LTC2217IUP#TRPBF for 80Msps operation without board revision.
What is the purpose of the SENSE pin on the LTC2215IUP#TRPBF?
The SENSE pin on the LTC2215IUP#TRPBF selects reference mode: tying it to VDD activates the internal 2.5V bandgap reference, while connecting an external 1.25V or 2.5V source enables system-level calibration traceability and improved gain stability over temperature in metrology-grade instruments.
LTC2215IUP#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:
- 16
- Sampling Rate (Per Second):
- 65M
- 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:
- -
LTC2215IUP#TRPBF FAQ
1.How can I place an order for LTC2215IUP#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2215IUP#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 LTC2215IUP#TRPBF reliable?
The price and inventory of LTC2215IUP#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2215IUP#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2215IUP#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2215IUP#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2215IUP#TRPBF?
LTC2215IUP#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2215IUP#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 LTC2215IUP#TRPBF?
For technical support, including LTC2215IUP#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2215IUP#TRPBF requirements.
6.How does Aetrix verify that LTC2215IUP#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2215IUP#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 LTC2215IUP#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2215IUP#TRPBF?
All LTC2215IUP#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2215IUP#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 LTC2215IUP#TRPBF part is unused and in its original packaging.
Return procedure for LTC2215IUP#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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