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Analog Devices Inc. LTC2208CUP-14#TRPBF
- Part No.:
- LTC2208CUP-14#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-WFQFN Exposed Pad
- Datasheet:
-
LTC2208CUP-14#TRPBF.pdf
- Description:
- IC ADC 14BIT PIPELINED 64QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,370
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Product details
Overview
LTC2208CUP-14#TRPBF from Analog Devices (acquired Linear Technology) is a 14-bit, 130Msps analog-to-digital converter optimized for high-frequency signal digitization up to 700MHz full-power bandwidth. It features a programmable gain amplifier (PGA), 77.1dBFS noise floor, 98dB spurious-free dynamic range (SFDR), and ultralow 70fsRMS aperture jitter - enabling undersampling in wideband communications receivers and spectrum analyzers.
For engineers reviewing the LTC2208CUP-14#TRPBF datasheet, LTC2208CUP-14#TRPBF pinout, LTC2208CUP-14#TRPBF application, or LTC2208CUP-14#TRPBF equivalent, key selection criteria include input bandwidth compatibility with RF front ends, LVDS/CMOS output flexibility, PGA-selectable 1.5VP-P or 2.25VP-P input ranges, and 64-pin QFN thermal performance at 1.32W dissipation.
Technical Context
The LTC2208CUP-14#TRPBF employs a pipelined ADC architecture with integrated sample-and-hold and internal reference generator. Its PGA front end supports two differential input voltage ranges (1.5VP-P or 2.25VP-P), while the clock duty cycle stabilizer ensures consistent timing performance across wide input duty cycles.
Digital outputs are configurable as standard or low-power LVDS, or single-ended CMOS (full-rate or demultiplexed). Output swing is adjustable via OVDD (0.5V–3.6V), and data latency is fixed at 7 clock cycles regardless of mode - critical for deterministic real-time signal processing pipelines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit - delivers 16,384 discrete amplitude levels for high-fidelity waveform capture |
| Sample Rate | 130Msps - supports Nyquist-limited baseband bandwidth up to 65MHz or undersampling of IF signals up to 700MHz |
| Noise Floor | 77.1dBFS - enables detection of weak signals buried in noise, e.g., in cellular base station receivers |
| SFDR | 98dB - suppresses harmonics and spurs, essential for multi-carrier LTE/WCDMA signal analysis |
| Aperture Jitter | 70fsRMS - limits sampling uncertainty, preserving SNR at high input frequencies (e.g., 250MHz) |
| INL / DNL | ±1.5LSB / ±0.5LSB - ensures monotonicity and accurate amplitude linearity for precision measurement systems |
| Power Dissipation | 1.32W - requires thermal management via exposed pad soldering and PCB copper area in 64-pin QFN |
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– | Differential analog input | Accepts 1.5VP-P or 2.25VP-P full-scale differential signal; common-mode voltage set by VCM (1.25V) |
| ENC+, ENC– | Differential encode clock input | Sampling edge-triggered; supports sine, PECL, LVDS, TTL, or CMOS; duty cycle stabilizer optional |
| LVDS | Output mode select | 0V = full-rate CMOS; 1/3VDD = demux CMOS; 2/3VDD = low-power LVDS; VDD = standard LVDS |
| PGA | Programmable gain control | Low = 1× gain (2.25VP-P range); high = 1.5× gain (1.5VP-P range) for improved SNR at lower signal levels |
| SHDN | Power shutdown control | High = analog core powered down; digital outputs go high-Z; 0.2mW standby power |
| DA0–DA13 / DB0–DB13 | Parallel digital outputs | DA bus active in full-rate CMOS; DA/DB buses active in demux mode (7-cycle latency, half-data-rate per bus) |
Key Features
| Feature | Design Value |
|---|---|
| 700MHz full-power bandwidth | Enables direct RF sampling of L-band and S-band signals without analog downconversion |
| Optional internal dither | Improves SFDR by >10dB at –25dBFS input when enabled, reducing harmonic distortion in narrowband applications |
| Digital output randomizer (RAND) | Reduces deterministic EMI from repetitive digital patterns by XOR-ing LSB with all other bits |
| Configurable output supply (OVDD) | Supports 0.5V–3.6V CMOS swing or 125–454mV LVDS differential swing for interface compatibility with FPGA I/O banks |
| Internal 1.25V VCM reference | Provides stable common-mode bias for differential input stage; requires ≥2.2μF bypass capacitor |
Applications
| Cellular Base Station Receiver | Spectrum Analyzer Front End |
|---|---|
Use Scenario: Digitizing wideband IF signals (e.g., 185–215MHz) from quadrature demodulators in macrocell BTS. IC Role / Device Role / Timing Role: High-speed ADC capturing 130Msps IQ samples with <70fsRMS jitter to preserve EVM in 256-QAM LTE transmissions. Use Value: 98dB SFDR prevents intermodulation distortion between adjacent carriers; PGA allows optimal dynamic range allocation across varying signal strengths. | Use Scenario: Real-time FFT-based spectral monitoring of 100MHz instantaneous bandwidth in portable analyzers. IC Role / Device Role / Timing Role: Primary digitizer feeding FPGA-based 32k-point FFT engine; 7-cycle deterministic latency enables synchronized trigger and acquisition. Use Value: 77.1dBFS noise floor ensures detection of –120dBm signals; LVDS outputs reduce EMI in high-density instrument PCB layouts. |
| ATE Digital Receiver Module | Medical Ultrasound Beamformer |
Use Scenario: Capturing transient response waveforms during high-speed semiconductor device characterization. IC Role / Device Role / Timing Role: Precision ADC in automated test head; triggered by external pattern generator with sub-nanosecond timing alignment. Use Value: ±1.5LSB INL guarantees amplitude accuracy for pass/fail threshold testing; CMOS demux mode simplifies FPGA interface routing. | Use Scenario: Sampling echo return signals from phased-array transducers operating at 5–15MHz center frequencies. IC Role / Device Role / Timing Role: Channel ADC in multi-channel receive beamformer ASIC; synchronized sampling across 64+ channels via shared ENC clock. Use Value: 700MHz bandwidth supports harmonic imaging modes; low 1.32W power enables dense channel integration without thermal throttling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9246BCPZ-125 | 14-bit, 125Msps; no PGA; 70dBFS SNR; 85dB SFDR; 3.3V only; 48-pin LFCSP | Lacks input gain flexibility and 130Msps throughput; lower SFDR limits multi-tone resolution | Select when lower power (750mW) and smaller footprint are prioritized over undersampling capability |
| ADS5463IPFP | 13-bit, 500Msps; no PGA; 65.3dBFS SNR; 72dB SFDR; 1.8V/3.3V supplies; 80-pin HTQFP | Higher speed but reduced resolution and dynamic range; incompatible pinout and power architecture | Select for ultra-wideband capture where 13-bit resolution suffices and FPGA has 1.8V I/O support |
Compared with AD9246BCPZ-125 and ADS5463IPFP, the LTC2208CUP-14#TRPBF uniquely balances 130Msps throughput, 14-bit resolution, PGA-adjustable input range, and 98dB SFDR - making it optimal for RF receiver designs requiring both sensitivity and spur-free dynamic range without sacrificing layout simplicity.
Availability
LTC2208CUP-14#TRPBF is available at Aetrix Electronics and suitable for cellular infrastructure, test equipment, and medical imaging systems requiring stable component supply, long-term manufacturability, and guaranteed lead-free compliance.
Supply support for LTC2208CUP-14#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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC2208 product line was developed by Linear Technology (acquired by ADI in 2017) specifically for high-speed, high-dynamic-range digitization in demanding RF and instrumentation applications - emphasizing jitter performance, flexible interface options, and robust thermal design in compact QFN packages.
FAQ
What is the operating temperature range for the LTC2208CUP-14#TRPBF?
The LTC2208CUP-14#TRPBF is rated for commercial operation from 0°C to +70°C. This is confirmed by the "C" grade designation in the part number and specified in the Absolute Maximum Ratings table. The "I" grade variant (LTC2208IUP-14#TRPBF) extends to –40°C to +85°C, but the C-grade LTC2208CUP-14#TRPBF is not characterized for operation outside its 0°C–70°C range.
Does the LTC2208CUP-14#TRPBF support both LVDS and CMOS digital outputs?
Yes, the LTC2208CUP-14#TRPBF supports both LVDS and CMOS outputs via the LVDS pin (Pin 61). Pulling LVDS to VDD selects standard LVDS mode; pulling to 2/3VDD selects low-power LVDS; pulling to 0V or 1/3VDD configures full-rate or demultiplexed CMOS output, respectively. CMOS output swing is adjustable from 0.5V to 3.6V using OVDD.
How does the PGA function affect input range on the LTC2208CUP-14#TRPBF?
The PGA pin (Pin 64) selects between two differential input voltage ranges: logic low sets 2.25VP-P full scale (1× gain), and logic high sets 1.5VP-P full scale (1.5× gain). This allows optimization of dynamic range for varying signal amplitudes - e.g., higher gain improves SNR for low-level ultrasound echoes, while lower gain prevents clipping in strong RF interferers.
What is the purpose of the SENSE pin on the LTC2208CUP-14#TRPBF?
The SENSE pin (Pin 1) configures the reference source: tying it to VDD selects the internal 2.5V bandgap reference, yielding a 2.25VP-P full-scale range (PGA = 0). An external 2.5V or 1.25V reference may also be applied - both produce identical full-scale ADC output ranges, enabling system-level reference sharing or improved stability.
Is the LTC2208CUP-14#TRPBF pin-compatible with any higher-resolution variants?
Yes, the LTC2208CUP-14#TRPBF is pin-compatible with the 16-bit LTC2208 (e.g., LTC2208CUP-16#TRPBF), as explicitly stated in the datasheet's "Pin Compatible 16-Bit Version" feature list. Both share identical 64-pin QFN packaging, pin functions, and power/ground layout - allowing drop-in resolution upgrades without PCB redesign.
LTC2208CUP-14#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:
- 14
- Sampling Rate (Per Second):
- 130M
- 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:
- -
LTC2208CUP-14#TRPBF FAQ
1.How can I place an order for LTC2208CUP-14#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2208CUP-14#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 LTC2208CUP-14#TRPBF reliable?
The price and inventory of LTC2208CUP-14#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2208CUP-14#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2208CUP-14#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2208CUP-14#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2208CUP-14#TRPBF?
LTC2208CUP-14#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2208CUP-14#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 LTC2208CUP-14#TRPBF?
For technical support, including LTC2208CUP-14#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2208CUP-14#TRPBF requirements.
6.How does Aetrix verify that LTC2208CUP-14#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2208CUP-14#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 LTC2208CUP-14#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2208CUP-14#TRPBF?
All LTC2208CUP-14#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2208CUP-14#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 LTC2208CUP-14#TRPBF part is unused and in its original packaging.
Return procedure for LTC2208CUP-14#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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