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Analog Devices Inc. LTC2203CUK#TRPBF
- Part No.:
- LTC2203CUK#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-WFQFN Exposed Pad
- Datasheet:
-
LTC2203CUK#TRPBF.pdf
- Description:
- IC ADC 16BIT PIPELINED 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,610
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Product details
Overview
LTC2203CUK#TRPBF from Analog Devices (formerly Linear Technology) is a 16-bit, 25Msps high-speed analog-to-digital converter optimized for digitizing wide dynamic range RF/IF signals up to 380MHz full-power bandwidth. It features a programmable gain amplifier (PGA) front end, 81.6dB SNR at 1MHz input (2.5V range), 100dB spurious-free dynamic range (SFDR), ±4LSB integral nonlinearity, and single 3.3V supply operation - deployed in cellular base station receivers and spectrum analyzers.
For engineers reviewing the LTC2203CUK#TRPBF datasheet, LTC2203CUK#TRPBF pinout, LTC2203CUK#TRPBF application, or LTC2203CUK#TRPBF equivalent, key selection criteria include sampling rate stability at 25Msps, SFDR performance above 90dB at 70MHz input, PGA-selectable 1.667VP-P or 2.5VP-P input ranges, CMOS output voltage flexibility (0.5V–3.6V), and thermal reliability in 7mm × 7mm QFN packages rated for 0°C to 70°C operation.
Technical Context
The LTC2203CUK#TRPBF implements a pipelined ADC architecture with integrated sample-and-hold, internal 2.5V bandgap reference (selectable via SENSE pin), and programmable gain amplifier supporting two differential input ranges. Its clock interface accepts a single-ended CLK input with optional duty cycle stabilizer enabling full-speed operation across wide duty cycle variations.
It delivers pipeline latency of 7 cycles, aperture delay of 0.9ns, and supports dithering and data randomization to suppress harmonic distortion. Output drivers are CMOS-compatible with separate OVDD supply (0.5V–3.6V), and the OF (out-of-range) flag provides real-time saturation detection during signal acquisition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes - guarantees monotonic transfer function for precision measurement systems. |
| Sampling Rate | 25Msps - enables Nyquist-limited digitization of signals up to 12.5MHz without aliasing in baseband applications. |
| SNR | 81.6dBFS at 1MHz input (2.5V range, PGA = 0) - supports >13 effective bits for high-fidelity signal capture. |
| SFDR | 100dBc at 1MHz input (2nd/3rd harmonic); 90dBc at 70MHz - critical for detecting weak signals adjacent to strong interferers. |
| Input Bandwidth | 380MHz full-power bandwidth - allows direct RF sampling of UHF bands without external IF translation. |
| Power Dissipation | 220mW at 25Msps - balances performance and thermal load in dense RF front-end layouts. |
| INL / DNL | ±4LSB INL, ±1LSB DNL - ensures accurate amplitude linearity for calibration-critical instrumentation. |
Pinout & Package
Package: 48-lead (7mm × 7mm) plastic QFN with exposed GND pad (Pin 49), RoHS-compliant, lead-free finish. Thermal resistance θJA = 29°C/W; maximum junction temperature = 150°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN+, AIN– | Differential analog input | Accepts 1.667VP-P or 2.5VP-P differential signal; common-mode voltage referenced to VCM (1.25V). |
| CLK | Sample clock input | Falling edge initiates hold phase; rising edge latches output data - supports duty cycle stabilization. |
| D0–D15 | Parallel CMOS digital outputs | 16-bit two's complement data bus; output swing configurable via OVDD (0.5V–3.6V). |
| OF | Out-of-range indicator | Active-high flag signals input saturation - enables real-time clipping detection without post-processing. |
| PGA | Programmable gain control | Logic-high selects 1.667VP-P input range; logic-low selects 2.5VP-P range - adjusts front-end sensitivity. |
| SHDN | Power shutdown control | Logic-high places analog core in low-power state (2mW) and tri-states digital outputs. |
| SENSE | Reference mode select | Tied to VDD selects internal 2.5V reference; external 1.25V/2.5V reference supported for system-level accuracy. |
| VCM | Common-mode bias output | 1.25V buffered reference for driving external differential input networks - requires ≥2.2μF bypass. |
Key Features
| Feature | Design Value |
|---|---|
| PGA front end | Configurable 1.667VP-P or 2.5VP-P input range - adapts dynamic range to signal source without external amplification. |
| Internal dither | Reduces harmonic distortion and improves SFDR at low input levels - enabled via DITH pin. |
| Data output randomizer | Minimizes radiated emissions and deterministic pattern noise on parallel digital bus - controlled by RAND pin. |
| Separate OVDD supply | Allows CMOS output swing tuning (0.5V–3.6V) to match downstream logic families - reduces level-shifting complexity. |
| Clock duty cycle stabilizer | Enables robust 25Msps operation with CLK duty cycles from 40% to 60% - relaxes clock generator requirements. |
Applications
| Cellular Base Station Receiver | Spectrum Analyzer Front End |
|---|---|
|
Use Scenario: Digitizing 70MHz IF signals from quadrature demodulators in LTE/FDD-TDD infrastructure. IC Role / Device Role / Timing Role: High-speed ADC capturing wide instantaneous bandwidth with minimal harmonic distortion. Use Value: 100dB SFDR at 70MHz enables detection of –100dBm interferers within 100kHz offset - meeting 3GPP ACLR requirements. |
Use Scenario: Real-time frequency-domain analysis of RF signals up to 380MHz using FFT-based processing. IC Role / Device Role / Timing Role: Precision sampling engine providing low-noise, high-linearity digitization for spectral purity validation. Use Value: 81.6dB SNR and ±1LSB DNL ensure accurate amplitude measurement across 120dB dynamic range displays. |
| ATE Test Instrumentation | Imaging System Digitizer |
|
Use Scenario: High-throughput parametric testing of RF components requiring fast, repeatable waveform capture. IC Role / Device Role / Timing Role: Deterministic-latency (7-cycle) ADC synchronized to system clock for time-aligned stimulus-response analysis. Use Value: 25Msps sampling with <0.9ns aperture jitter enables sub-picosecond timing resolution in time-domain reflectometry. |
Use Scenario: Converting analog video outputs from CCD/CMOS sensors in medical ultrasound or industrial X-ray systems. IC Role / Device Role / Timing Role: Low-noise digitizer preserving fine-grained contrast detail in high-resolution image reconstruction. Use Value: ±4LSB INL and 380MHz bandwidth support >1000-line vertical resolution with <0.1% geometric distortion. |
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-105 | 16-bit, 105Msps, JESD204B serial output, 1.8V supply - higher speed but no PGA or dither. | Targets multi-channel SDR systems requiring lane aggregation; unsuitable for legacy parallel-bus designs. | Select when migrating to high-density, FPGA-connected architectures with SerDes interfaces. |
| LTC2208IUK#TRPBF | 16-bit, 80Msps, same QFN-48 package, improved SFDR (102dBc at 70MHz), 3.3V-only OVDD. | Offers higher sampling rate and better spurious performance - ideal for next-generation spectrum monitoring. | Choose for upgraded performance headroom while retaining PCB layout compatibility and thermal profile. |
Compared with AD9268BCPZ-105 and LTC2208IUK#TRPBF, the LTC2203CUK#TRPBF provides optimal balance of 25Msps throughput, PGA flexibility, and parallel CMOS interface - making it uniquely suited for cost-sensitive, space-constrained RF receiver modules where pin compatibility and analog configurability are prioritized over raw speed or serial interface integration.
Availability
LTC2203CUK#TRPBF is available at Aetrix Electronics and suitable for cellular base station receivers, spectrum analyzer front ends, and ATE test instrumentation requiring stable component supply, long-term lifecycle support, and traceable sourcing for production ramp.
Supply support for LTC2203CUK#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 communications, industrial, automotive, and healthcare markets.
The LTC2203CUK#TRPBF belongs to ADI's high-speed precision ADC product line, engineered for demanding RF/IF digitization tasks where dynamic range, linearity, and low power at moderate sampling rates are essential - especially in infrastructure and test equipment.
FAQ
What is the operating temperature range for the LTC2203CUK#TRPBF?
The LTC2203CUK#TRPBF is specified for commercial-grade operation from 0°C to 70°C ambient temperature. This range is confirmed in the Order Information table and Absolute Maximum Ratings section of the datasheet, and applies to all variants marked with "C" suffix (e.g., LTC2203CUK#TRPBF). Industrial-grade alternatives (e.g., LTC2203IUK#TRPBF) extend to –40°C to 85°C.
Does the LTC2203CUK#TRPBF support differential clock inputs?
No, the LTC2203CUK#TRPBF accepts only a single-ended CLK input as specified in the Pin Configuration and Timing Characteristics sections. The device does not include differential clock receiver circuitry; however, it features an optional internal clock duty cycle stabilizer to maintain performance across varying input duty cycles - a design choice that simplifies clock generation in cost-sensitive RF front ends.
How is the input full-scale range configured on the LTC2203CUK#TRPBF?
The LTC2203CUK#TRPBF supports two differential input ranges: 1.667VP-P and 2.5VP-P. Selection is controlled by the PGA pin - logic high enables the 1.667VP-P range, and logic low enables the 2.5VP-P range. Both ranges correspond to the same full-scale ADC code span (65536 codes), and the internal reference (2.5V) remains fixed regardless of PGA setting, as verified in the PGA Front End and Converter Characteristics tables.
Can the LTC2203CUK#TRPBF operate with OVDD = 1.8V?
Yes, the LTC2203CUK#TRPBF supports OVDD from 0.5V to 3.6V, including 1.8V. The Digital Inputs and Outputs section specifies VOH = 1.79V and VOL = 0.1V under OVDD = 1.8V conditions, confirming full compatibility with 1.8V logic families. This allows direct interfacing with low-voltage FPGAs or ASICs without level shifters.
What is the purpose of the SENSE pin on the LTC2203CUK#TRPBF?
The SENSE pin on the LTC2203CUK#TRPBF serves dual functions: reference mode selection and external reference input. Tying SENSE to VDD (≤1kΩ) selects the internal 2.5V bandgap reference. Alternatively, applying a precise 1.25V or 2.5V external reference to SENSE overrides the internal reference - enabling system-level calibration and improved DC accuracy, as detailed in the Pin Function Descriptions section.
LTC2203CUK#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 48-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 25M
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- 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:
- 48-QFN (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2203CUK#TRPBF FAQ
1.How can I place an order for LTC2203CUK#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2203CUK#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 LTC2203CUK#TRPBF reliable?
The price and inventory of LTC2203CUK#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2203CUK#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2203CUK#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2203CUK#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2203CUK#TRPBF?
LTC2203CUK#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2203CUK#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 LTC2203CUK#TRPBF?
For technical support, including LTC2203CUK#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2203CUK#TRPBF requirements.
6.How does Aetrix verify that LTC2203CUK#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2203CUK#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 LTC2203CUK#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2203CUK#TRPBF?
All LTC2203CUK#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2203CUK#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 LTC2203CUK#TRPBF part is unused and in its original packaging.
Return procedure for LTC2203CUK#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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