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Analog Devices Inc. LTC2208IUP-14#TRPBF
- Part No.:
- LTC2208IUP-14#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-WFQFN Exposed Pad
- Datasheet:
-
LTC2208IUP-14#TRPBF.pdf
- Description:
- IC ADC 14BIT PIPELINED 64QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,483
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Product details
Overview
LTC2208IUP-14#TRPBF from Analog Devices (formerly Linear Technology) is a 14-bit, 130Msps pipeline 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) front end, 70fs RMS aperture jitter, ±1.5LSB INL, and dual-output flexibility (LVDS or CMOS). It serves as the core ADC in cellular base station receivers requiring undersampling of RF signals with high SFDR.
For engineers reviewing the LTC2208IUP-14#TRPBF datasheet, LTC2208IUP-14#TRPBF pinout, LTC2208IUP-14#TRPBF application, or LTC2208IUP-14#TRPBF equivalent, key selection criteria include its 98dB spurious-free dynamic range at 5MHz, 77.1dBFS noise floor, 64-pin QFN package with exposed thermal pad, and support for both standard and low-power LVDS output modes under industrial temperature range (–40°C to +85°C).
Technical Context
The LTC2208IUP-14#TRPBF employs a 14-bit pipelined ADC architecture with integrated sample-and-hold, internal 1.25V VCM bias generator, and configurable clock duty cycle stabilizer. Its PGA front end supports two input ranges (2.25VP-P or 1.5VP-P), enabling optimization for varying signal amplitudes without external amplification.
Digital outputs are selectable between differential LVDS (standard or low-power mode) and single-ended CMOS (full-rate or demultiplexed), with independent OVDD supply (0.5V–3.6V for CMOS; 3.0V–3.6V for LVDS). The device uses a single 3.3V analog supply (VDD) and achieves 1.32W typical power dissipation at 130Msps in CMOS mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit - delivers 16,384 discrete quantization levels for high-fidelity digitization of wide-dynamic-range RF/IF signals. |
| Sample Rate | 130Msps - enables real-time capture of signals up to 65MHz Nyquist bandwidth or undersampling of IF/RF carriers up to 700MHz. |
| Noise Floor | 77.1dBFS - defines minimum detectable signal level in 5MHz band; critical for receiver sensitivity in spectrum analysis and ATE. |
| SFDR | 98dBc (2nd/3rd harmonic, 5MHz) - ensures clean spectral representation with minimal spurious content in communications receivers. |
| Aperture Jitter | 70fsRMS - directly limits SNR degradation at high input frequencies; enables accurate undersampling of 250MHz+ signals. |
| INL / DNL | ±1.5LSB / ±0.5LSB - guarantees monotonicity and linearity across full code range; essential for precision measurement in imaging systems. |
| Power Supply | Single 3.3V VDD - simplifies system power architecture; separates analog and digital output supplies (OVDD) for noise isolation. |
Pinout & Package
64-pin (9mm × 9mm) plastic QFN package with exposed thermal pad (Pin 65 = GND), rated for –40°C to +85°C operation. Requires soldering of exposed pad to PCB ground plane for thermal and electrical performance.
| 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 referenced to internal 1.25V VCM (Pin 3). |
| ENC+, ENC– | Differential encode clock inputs | Sample edge-triggered on ENC+ rising / ENC– falling; accepts sine, PECL, LVDS, TTL, or CMOS; duty cycle stabilizer optional. |
| DA0–DA13, DB0–DB13 | Parallel digital data outputs | DA bus active in full-rate CMOS; DB bus active in demultiplexed CMOS; both active in LVDS mode (D0+/– through D13+/–). |
| LVDS (Pin 61) | Output mode select | Logic level sets output interface: 0V = full-rate CMOS, 1/3VDD = demux CMOS, 2/3VDD = low-power LVDS, VDD = standard LVDS. |
| PGA (Pin 64) | Front-end gain control | Low = 1× gain (2.25VP-P input range); high = 1.5× gain (1.5VP-P input range); enables dynamic range optimization per signal chain. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Gain Amplifier (PGA) | Configurable 1× or 1.5× front-end gain selects optimal input range (2.25VP-P or 1.5VP-P) without external components. |
| Optional Internal Dither | Reduces harmonic distortion and improves SFDR by >10dB at –25dBFS input when enabled, especially beneficial in low-level signal detection. |
| Digital Output Randomizer | RAND pin enables XOR-based bit scrambling (D1–D13 ⊕ D0), lowering deterministic digital switching noise coupling into analog sections. |
| Flexible Clock Interface | ENC+ / ENC– accept multiple logic families; optional duty cycle stabilizer maintains timing integrity across wide input duty cycle variation. |
| Multiple Output Configurations | Single part supports standard LVDS, low-power LVDS, full-rate CMOS, and demultiplexed CMOS - reduces BOM count and layout variants. |
Applications
| Cellular Base Station Receiver | Spectrum Analyzer Front End |
|---|---|
|
Use Scenario: Digitizing 70MHz–380MHz IF signals in LTE/5G macrocell and small-cell radio units with direct RF sampling capability. IC Role / Device Role / Timing Role: Primary high-speed ADC capturing wide instantaneous bandwidth; aperture jitter <70fsRMS ensures phase coherence for MIMO channel estimation. Use Value: 98dB SFDR and 77.1dBFS noise floor enable simultaneous detection of weak adjacent-channel signals and strong interferers without blanking. |
Use Scenario: High-resolution frequency-domain acquisition in benchtop and portable spectrum analyzers requiring >100dB dynamic range. IC Role / Device Role / Timing Role: Core digitizer in real-time FFT engines; 130Msps sample rate supports 65MHz real-time bandwidth with 32k-point FFT latency of 7 cycles. Use Value: Optional dither and randomizer suppress spectral artifacts from digital feedthrough, improving measurement accuracy below –100dBc. |
| Automated Test Equipment (ATE) | Medical Ultrasound Imaging |
|
Use Scenario: High-throughput production testing of RF power amplifiers and transceivers using vector signal analysis. IC Role / Device Role / Timing Role: ADC in digitizing path of VSA/VSG instruments; supports multi-tone analysis up to 250MHz with >81dB SFDR. Use Value: ±1.5LSB INL and ±0.5LSB DNL ensure calibrated amplitude accuracy across full code range, reducing system-level correction overhead. |
Use Scenario: Beamforming receive path digitization in portable and cart-based ultrasound systems operating at 5–15MHz center frequencies. IC Role / Device Role / Timing Role: Channel ADC in multi-channel analog front-end; 700MHz S/H bandwidth preserves pulse fidelity of broadband echo signals. Use Value: PGA front end adapts to variable transducer sensitivity; 1.32W power enables thermal management in compact handheld enclosures. |
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; 75dBFS SNR; requires external reference and driver; 48-pin LFCSP. | Better suited for fixed-gain, lower-power applications where input signal amplitude is tightly controlled. | Select when system already includes high-performance op-amp driver and external reference, and 5Msps lower sample rate is acceptable. |
| LTC2207IUP-14#TRPBF | 14-bit, 105Msps; identical pinout, PGA, and feature set; 1.1W power; 76.5dBFS noise floor; 95dB SFDR. | Lower sample rate and slightly reduced AC performance; suitable for cost-optimized or thermally constrained designs. | Drop-in replacement if 105Msps meets system bandwidth requirements and 3dB lower SFDR is acceptable for target spurious budget. |
Compared with AD9246BCPZ-125, LTC2208IUP-14#TRPBF integrates PGA and VCM generation, reducing external component count and layout complexity; compared with LTC2207IUP-14#TRPBF, it delivers +5Msps speed and +3dB SFDR at only +0.22W higher power - a net gain in signal integrity per watt.
Availability
LTC2208IUP-14#TRPBF is available at Aetrix Electronics and suitable for cellular infrastructure, test instrumentation, and medical imaging applications requiring stable component supply, long-term lifecycle support, and industrial-grade temperature compliance (–40°C to +85°C).
Supply support for LTC2208IUP-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 LTC2208IUP-14#TRPBF belongs to ADI's high-speed precision ADC product line, designed specifically for demanding communications and instrumentation applications requiring ultra-low jitter, wide input bandwidth, and flexible digital interfacing.
FAQ
What is the operating temperature range for the LTC2208IUP-14#TRPBF?
The LTC2208IUP-14#TRPBF is specified for industrial operation from –40°C to +85°C. This rating is confirmed in the Absolute Maximum Ratings table and applies across all performance specifications unless otherwise noted. The "I" grade designation in the part number explicitly denotes this extended temperature range, distinguishing it from the commercial-grade "C" version (0°C to 70°C).
Does the LTC2208IUP-14#TRPBF require an external reference voltage?
No - the LTC2208IUP-14#TRPBF includes an internal 2.5V bandgap reference. Connecting the SENSE pin to VDD activates the internal reference, setting a full-scale ADC range of 2.25VP-P (with PGA = 0). An external 2.5V or 1.25V reference may be used via the SENSE pin if tighter reference stability or system-level reference synchronization is required.
How does the PGA function affect the input range of the LTC2208IUP-14#TRPBF?
The PGA (Pin 64) controls front-end gain: low = 1× gain (2.25VP-P differential input range), high = 1.5× gain (1.5VP-P differential input range). This allows matching the ADC's full-scale range to varying signal amplitudes without external amplification, preserving SNR and avoiding clipping in dynamic RF environments.
Can the LTC2208IUP-14#TRPBF operate with LVDS and CMOS outputs simultaneously?
No - output mode is selected exclusively via the LVDS pin (Pin 61). Setting LVDS to VDD enables standard LVDS; to 2/3VDD enables low-power LVDS; to 1/3VDD enables demultiplexed CMOS; to 0V enables full-rate CMOS. Only one interface is active at a time; mixing LVDS and CMOS outputs is not supported.
What is the purpose of the RAND pin on the LTC2208IUP-14#TRPBF?
The RAND pin (Pin 63) enables digital output randomization: when high, bits D1–D13 are XORed with D0 (LSB), reducing deterministic spectral energy from digital switching. This minimizes coupling of digital noise into sensitive analog sections - particularly valuable in high-density RF boards where ADC digital outputs run near analog traces.
LTC2208IUP-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:
- -40°C ~ 85°C
- Supplier Device Package:
- 64-QFN (9x9)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2208IUP-14#TRPBF FAQ
1.How can I place an order for LTC2208IUP-14#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2208IUP-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 LTC2208IUP-14#TRPBF reliable?
The price and inventory of LTC2208IUP-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 LTC2208IUP-14#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2208IUP-14#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2208IUP-14#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2208IUP-14#TRPBF?
LTC2208IUP-14#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2208IUP-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 LTC2208IUP-14#TRPBF?
For technical support, including LTC2208IUP-14#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2208IUP-14#TRPBF requirements.
6.How does Aetrix verify that LTC2208IUP-14#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2208IUP-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 LTC2208IUP-14#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2208IUP-14#TRPBF?
All LTC2208IUP-14#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2208IUP-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 LTC2208IUP-14#TRPBF part is unused and in its original packaging.
Return procedure for LTC2208IUP-14#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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