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Analog Devices Inc. LTC2208IUP-14#PBF
- Part No.:
- LTC2208IUP-14#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-WFQFN Exposed Pad
- Datasheet:
-
LTC2208IUP-14#PBF.pdf
- Description:
- IC ADC 14BIT PIPELINED 64QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,649
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Product details
Overview
LTC2208IUP-14#PBF from Analog Devices (formerly Linear Technology) is a 14-bit, 130Msps analog-to-digital converter optimized for high-frequency, wide-dynamic-range 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 cellular base station receivers and spectrum analyzers.
For engineers reviewing the LTC2208IUP-14#PBF datasheet, LTC2208IUP-14#PBF pinout, LTC2208IUP-14#PBF application, or LTC2208IUP-14#PBF equivalent, key selection considerations include its dual LVDS/CMOS output flexibility, ±1.5LSB INL, –40°C to +85°C industrial temperature rating, 64-pin QFN package, and support for dithering and output randomization to suppress digital coupling artifacts.
Technical Context
The LTC2208IUP-14#PBF employs a 14-bit pipelined ADC core with integrated sample-and-hold and PGA front end, supporting differential analog inputs up to 2.25VP-P (PGA = 0) or 1.5VP-P (PGA = 1). Its clock interface accepts differential (LVDS, PECL, TTL) or single-ended inputs, with an optional duty cycle stabilizer ensuring performance across 2.6–3.846ns high/low times.
Digital outputs are configurable as standard/low-power LVDS or single-ended CMOS (full-rate or demultiplexed), with separate OVDD supply (0.5V–3.6V) enabling voltage-level adaptation. Internal reference generation (2.5V bandgap) and SENSE pin-selectable external reference (1.25V/2.5V) provide system-level flexibility without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution & Sample Rate | 14-bit, 130Msps - delivers 1.82 GSPS effective throughput in demultiplexed CMOS mode with deterministic 7-cycle latency. |
| Noise Floor & SFDR | 77.1dBFS noise floor and 98dB SFDR at 5MHz input - enables high-fidelity digitization of weak signals adjacent to strong interferers in RF receivers. |
| Aperture Jitter | 70fsRMS - limits SNR degradation to ≤0.3dB at 250MHz input, critical for undersampling architectures. |
| INL / DNL | ±1.5LSB integral nonlinearity and ±0.5LSB differential nonlinearity - ensures monotonicity and <0.02% harmonic distortion in precision measurement systems. |
| Input Bandwidth | 700MHz full-power bandwidth - supports direct sampling of L-band and S-band RF signals without IF translation. |
| Power Dissipation | 1.32W typical (CMOS mode, 3.3V VDD) - balances high-speed performance with thermal manageability in dense PCB layouts. |
| Operating Temperature | –40°C to +85°C - qualified for industrial and base station environments where ambient thermal cycling exceeds commercial-grade limits. |
Pinout & Package
64-lead (9mm × 9mm) plastic QFN package with exposed thermal pad (Pin 65 = GND), requiring soldering to PCB ground plane for thermal and electrical integrity. Pin pitch: 0.5mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN+, AIN– | Differential analog input pair | Accepts 1.5VP-P or 2.25VP-P signals with 1.25V common-mode bias; 6.5pF input capacitance in sample mode. |
| ENC+, ENC– | Differential encode clock inputs | Trigger sampling on ENC+ rising edge; support sine wave, LVDS, PECL, TTL, or CMOS drive; internal 6.2kΩ bias. |
| LVDS (Pin 61) | Output mode select | Logic level selects Standard LVDS (VDD), Low Power LVDS (2/3VDD), Demux CMOS (1/3VDD), or Full-Rate CMOS (GND). |
| DA0–DA13 / DB0–DB13 | Parallel digital output buses | DA bus active in all modes; DB bus active only in demultiplexed CMOS; MSB-first, offset binary or 2's complement selectable via MODE pin. |
| SHDN, DITH, RAND, PGA, MODE | Configuration control inputs | Enable shutdown (μW standby), internal dither, output randomization, PGA gain (1×/1.5×), and output format/duty cycle stabilization. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Gain Amplifier (PGA) | Selects 2.25VP-P (PGA = 0) or 1.5VP-P (PGA = 1) input range - optimizes dynamic range for varying signal amplitudes without external amplification. |
| Configurable Output Interface | Single-supply CMOS (0.5V–3.6V OVDD) or LVDS (standard/low-power) - eliminates level-shifting ICs and simplifies FPGA/ASIC interfacing. |
| Internal Clock Duty Cycle Stabilizer | Compensates for >30%–70% input clock duty cycle variation - maintains timing margins without external clock conditioning circuitry. |
| Digital Output Randomization | XOR-based LSB-driven scrambling (RAND pin) - reduces spectral energy at harmonics of data rate, easing EMI filtering requirements. |
| Optional Internal Dither | Improves SFDR by ≥10dB at –25dBFS input when enabled - suppresses harmonic distortion from quantization nonlinearity in low-amplitude signals. |
Applications
| Cellular Base Station Receivers | Spectrum Analyzers |
|---|---|
Use Scenario: Digitizing wideband LTE/5G RF signals directly from antenna front-end with minimal analog preprocessing. IC Role / Device Role / Timing Role: High-speed ADC capturing 100MHz+ instantaneous bandwidth at 130Msps with 700MHz input bandwidth. Use Value: Eliminates image-reject mixers and IF stages, reducing BOM count and phase-matching complexity while preserving SFDR >81dB at 250MHz. |
Use Scenario: Real-time frequency-domain analysis of transient RF emissions in EMC testing and signal intelligence. IC Role / Device Role / Timing Role: Precision digitizer feeding FFT engines with 77.1dBFS noise floor and <0.5LSB DNL for accurate amplitude calibration. Use Value: Enables 120dB dynamic range measurements using 32k-point FFTs without averaging, accelerating sweep time by 3× vs 12-bit alternatives. |
| High-Speed ATE Systems | Imaging Signal Chains |
Use Scenario: Automated test equipment validating RF transceivers across multi-GHz bands with calibrated stimulus-response capture. IC Role / Device Role / Timing Role: Reference-grade ADC providing traceable ENOB >12.2 bits at 130Msps for metrology-grade waveform reconstruction. Use Value: Meets IEEE 1057 Class I accuracy requirements with ±1.5LSB INL and <10μV/°C offset drift over –40°C to +85°C. |
Use Scenario: Digitizing ultrasound echo signals or radar return pulses requiring sub-nanosecond timing resolution. IC Role / Device Role / Timing Role: Low-jitter (70fsRMS) sampling engine synchronizing to pulsed excitation clocks in time-of-flight systems. Use Value: Reduces range ambiguity error to <0.1mm at 1540m/s sound velocity, enabling medical-grade spatial 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 |
|---|---|---|---|
| AD9246BCPZ-125 | 14-bit, 125Msps; no integrated PGA; 65dBFS SNR at 70MHz; requires external reference and clock buffer. | Better power efficiency (750mW), but lacks PGA and dither - less suitable for variable-amplitude RF inputs. | Choose for cost-sensitive, lower-bandwidth (<125Msps) systems where external signal conditioning is already present. |
| LTC2207IUP-14#PBF | Pin-compatible 105Msps variant; identical architecture, package, and feature set - differs only in maximum sample rate and AC specs. | Lower power (1.05W) and reduced SFDR (95dB) - appropriate for applications trading speed for thermal headroom. | Choose for designs requiring drop-in migration path or qualification continuity where 105Msps suffices. |
Compared with AD9246BCPZ-125 and LTC2207IUP-14#PBF, the LTC2208IUP-14#PBF uniquely combines 130Msps speed, on-chip PGA, dither, and randomization in a single 64-pin QFN - delivering higher system integration density and superior undersampling performance for RF-intensive applications.
Availability
LTC2208IUP-14#PBF is available at Aetrix Electronics and suitable for cellular infrastructure, test instrumentation, and medical imaging systems requiring stable component supply across extended industrial temperature ranges.
Supply support for LTC2208IUP-14#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 digital signal processing technologies, serving communications, industrial, automotive, and healthcare markets.
The LTC2208IUP-14#PBF belongs to Linear's high-speed ADC product line, engineered specifically for demanding RF and instrumentation applications requiring ultra-low jitter, wide input bandwidth, and flexible digital interfacing.
FAQ
What is the maximum input frequency supported by the LTC2208IUP-14#PBF?
The LTC2208IUP-14#PBF supports a full-power analog input bandwidth of 700MHz, enabling direct RF sampling of signals up to S-band frequencies. This specification is validated under RS ≤ 25Ω source impedance and applies across the full –40°C to +85°C operating temperature range, making it suitable for broadband receiver front-ends without intermediate frequency conversion stages.
Does the LTC2208IUP-14#PBF require an external reference voltage?
No - the LTC2208IUP-14#PBF integrates a 2.5V bandgap reference and supports internal reference operation by tying the SENSE pin to VDD. An external 1.25V or 2.5V reference may be used for improved stability or system-level calibration, but is not required for functional operation of the LTC2208IUP-14#PBF.
How does the PGA function affect the input voltage range of the LTC2208IUP-14#PBF?
The PGA on the LTC2208IUP-14#PBF provides two selectable full-scale input ranges: 2.25VP-P (PGA = 0) and 1.5VP-P (PGA = 1). This allows system designers to match the ADC's dynamic range to varying signal amplitudes without external gain stages, preserving SNR and minimizing clipping risk in multi-standard RF receivers where signal levels fluctuate significantly.
What digital output configurations does the LTC2208IUP-14#PBF support?
The LTC2208IUP-14#PBF supports four digital output modes selected via the LVDS pin: Standard LVDS, Low Power LVDS, Full-Rate CMOS, and Demultiplexed CMOS. CMOS outputs operate from 0.5V to 3.6V OVDD, allowing direct interfacing with 1.8V, 2.5V, or 3.3V logic families without level shifters - a key advantage in FPGA- and ASIC-based signal processing platforms.
Is the LTC2208IUP-14#PBF pin-compatible with other devices in the same family?
Yes - the LTC2208IUP-14#PBF is pin-compatible with the 16-bit LTC2208 (130Msps) and the 105Msps LTC2207IUP-14#PBF, sharing identical 64-pin QFN packaging, pinout, and power/ground layout. This enables hardware reuse across performance tiers and simplifies design migration paths within the same PCB footprint.
LTC2208IUP-14#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:
- 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:
- -40°C ~ 85°C
- Supplier Device Package:
- 64-QFN (9x9)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2208IUP-14#PBF FAQ
1.How can I place an order for LTC2208IUP-14#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2208IUP-14#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 LTC2208IUP-14#PBF reliable?
The price and inventory of LTC2208IUP-14#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2208IUP-14#PBF is usually 5 days.
3.What payment methods are accepted for LTC2208IUP-14#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2208IUP-14#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2208IUP-14#PBF?
LTC2208IUP-14#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2208IUP-14#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 LTC2208IUP-14#PBF?
For technical support, including LTC2208IUP-14#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2208IUP-14#PBF requirements.
6.How does Aetrix verify that LTC2208IUP-14#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2208IUP-14#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 LTC2208IUP-14#PBF meets industry standards.
7.What is the process for return or replacement of LTC2208IUP-14#PBF?
All LTC2208IUP-14#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2208IUP-14#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 LTC2208IUP-14#PBF part is unused and in its original packaging.
Return procedure for LTC2208IUP-14#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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