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Analog Devices Inc. LTC2203IUK#TRPBF
- Part No.:
- LTC2203IUK#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-WFQFN Exposed Pad
- Datasheet:
-
LTC2203IUK#TRPBF.pdf
- Description:
- IC ADC 16BIT PIPELINED 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,355
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Product details
Overview
LTC2203IUK#TRPBF from Analog Devices (formerly Linear Technology) is a 16-bit, 25Msps analog-to-digital converter optimized for high-frequency, wide-dynamic-range signal digitization up to 380MHz full-power bandwidth. It features an integrated PGA front end, 81.6dB SNR at 1MHz input (2.5V range), ±4LSB INL, and operates from a single 3.3V supply - used in cellular base station receivers and spectrum analyzers.
For engineers reviewing the LTC2203IUK#TRPBF datasheet, LTC2203IUK#TRPBF pinout, LTC2203IUK#TRPBF application, or LTC2203IUK#TRPBF equivalent, key selection criteria include sampling rate stability at 25Msps, SFDR performance above 100dBc at low input frequencies, CMOS output voltage flexibility (0.5V–3.6V), internal dither capability, and operation across –40°C to +85°C industrial temperature range.
Technical Context
The LTC2203IUK#TRPBF employs a pipelined ADC architecture with integrated sample-and-hold and correction logic, supporting differential analog inputs up to ±1.25V common-mode. Its clock interface accepts a single-ended CLK input with optional duty-cycle stabilizer for robust timing at full speed.
It integrates a programmable gain amplifier (PGA) enabling two selectable input ranges (2.5VP-P or 1.667VP-P), an out-of-range indicator (OF), and configurable digital outputs with separate OVDD supply. Internal reference generation supports both internal 2.5V bandgap and external 1.25V/2.5V references via SENSE pin.
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 real-time digitization of IF signals up to 380MHz bandwidth without undersampling constraints. |
| SNR | 81.6dBFS at 1MHz input (2.5V range, PGA = 0) - supports >13 effective bits for high-fidelity signal capture. |
| SFDR | 100dBc at 1MHz (2nd/3rd harmonic, 2.5V range) - minimizes spurious content in spectral analysis applications. |
| INL / DNL | ±4LSB integral nonlinearity, ±1LSB differential nonlinearity - ensures accurate amplitude fidelity in instrumentation and ATE. |
| Power Dissipation | 220mW at 25Msps - balances performance and thermal management in dense RF subsystems. |
| Operating Temperature | –40°C to +85°C - qualified for industrial and outdoor wireless infrastructure environments. |
Pinout & Package
Package: 48-lead (7mm × 7mm) plastic QFN with exposed pad (Pin 49 = GND). Requires soldering of exposed pad to PCB ground plane for thermal and electrical integrity (θJA = 29°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN+, AIN– | Differential analog input pair | Accepts high-frequency signals up to 380MHz; common-mode bias set by VCM pin (1.25V). |
| CLK | Sample clock input | Falling edge initiates hold phase; rising edge may latch output data - supports variable duty cycle with stabilizer enabled. |
| D0–D15 | Parallel CMOS digital outputs | 16-bit LSB-first or MSB-first (configurable); output swing set by OVDD (0.5V–3.6V) for interfacing with diverse logic families. |
| SHDN | Shutdown control | Active-high; places analog circuitry in low-power state and forces outputs to high-impedance - enables power cycling in burst-mode systems. |
| DITH | Internal dither enable | High = enables on-chip dither to improve SFDR at low input levels (e.g., –25dBFS), critical for weak-signal detection. |
| OF | Out-of-range indicator | Active-high flag signaling analog input exceeds full-scale range - enables real-time clipping detection without software overhead. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated PGA front end | Configurable 2.5VP-P or 1.667VP-P input range - simplifies anti-alias filter design and improves dynamic range for varying signal amplitudes. |
| Separate OVDD supply | 0.5V–3.6V output voltage range - allows direct interfacing with 1.8V, 2.5V, or 3.3V FPGA/ASIC I/O banks without level shifters. |
| Optional internal dither | Improves SFDR by ≥10dB at –25dBFS input - enhances spurious-free performance in low-level RF signal acquisition. |
| Clock duty cycle stabilizer | Enables full 25Msps operation with clock duty cycles from 40% to 60% - relaxes clock source requirements in mixed-signal PCB layouts. |
| Out-of-range (OF) flag | Hardware-level saturation detection - eliminates need for post-processing code to identify clipping in real-time spectrum monitoring. |
Applications
| Cellular Base Station Receiver | Spectrum Analyzer Front End |
|---|---|
Use Scenario: Digitizing 70MHz IF signals from downconverters in LTE/FDD-TDD macrocell radios. IC Role / Device Role / Timing Role: Primary ADC capturing wideband channelized signals with minimal distortion and jitter-induced noise floor degradation. Use Value: 100dB SFDR at 70MHz preserves adjacent-channel interference rejection; 380MHz bandwidth avoids aliasing without complex pre-filtering. | Use Scenario: High-resolution frequency-domain analysis of unknown RF emissions in EMC testing labs. IC Role / Device Role / Timing Role: Core digitizer feeding FFT engines in real-time spectrum mapping systems. Use Value: 81.6dB SNR ensures >13 ENOB for accurate amplitude calibration; internal dither maintains SFDR >110dBc at low input levels. |
| ATE for RF Power Amplifiers | Imaging System Signal Chain |
Use Scenario: Capturing transient distortion signatures during PA characterization under modulated LTE/NR waveforms. IC Role / Device Role / Timing Role: High-fidelity acquisition stage synchronized to stimulus generator for envelope tracking validation. Use Value: ±1LSB DNL prevents code-dependent gain errors in harmonic distortion measurements; 25Msps supports 10MHz analysis bandwidth. | Use Scenario: Digitizing ultrasound echo returns in portable medical imaging devices requiring compact, low-power signal chains. IC Role / Device Role / Timing Role: Low-noise ADC in time-gain compensation (TGC) path, operating at reduced sample rates with PGA gain adjustment. Use Value: PGA enables dynamic range adaptation across echo depth; –40°C to +85°C rating supports battery-powered field deployment. |
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-20EBZ | 16-bit, 20Msps; serial LVDS output; requires external reference and clock buffer | Lower power (140mW), but lacks integrated PGA and dither; suited for space-constrained LVDS-based systems | Select when system uses JESD204B or LVDS interconnect and can accommodate external support circuitry. |
| ADS5463IPFP | 16-bit, 500Msps; single-supply 3.3V; higher power (1.4W); no integrated PGA | Supports direct RF sampling >200MHz; requires more aggressive thermal design and layout isolation | Select only when >100MHz input bandwidth is mandatory and board area/power budget permits. |
Compared with AD9268BCPZ-20EBZ and ADS5463IPFP, the LTC2203IUK#TRPBF delivers optimal balance of 25Msps throughput, integrated signal conditioning (PGA/dither), and industrial temperature operation - making it ideal for cost-sensitive, medium-bandwidth RF digitization where ease of use and reliability outweigh raw speed or interface flexibility.
Availability
LTC2203IUK#TRPBF is available at Aetrix Electronics and suitable for cellular base station receivers, spectrum analyzers, automated test equipment, and imaging systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC2203IUK#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 LTC2203IUK#TRPBF belongs to ADI's high-speed precision ADC product line, designed specifically for demanding RF and instrumentation applications requiring wide bandwidth, low distortion, and robust operation in harsh thermal environments.
FAQ
What is the maximum analog input frequency supported by the LTC2203IUK#TRPBF?
The LTC2203IUK#TRPBF supports a full-power analog input bandwidth of 380MHz, meaning it can accurately digitize signals with fundamental frequencies up to that limit while maintaining specified SNR and SFDR performance. This is enabled by its high-speed sample-and-hold circuit and optimized internal pipeline architecture - critical for IF sampling in wireless infrastructure. The LTC2203IUK#TRPBF achieves this without requiring external track-and-hold amplifiers.
Does the LTC2203IUK#TRPBF require an external reference voltage?
No - the LTC2203IUK#TRPBF includes an internal 2.5V bandgap reference. When the SENSE pin is tied to VDD with ≤1kΩ, the internal reference is selected, setting a full-scale range of 2.5V (PGA = 0). An external 1.25V or 2.5V reference may also be used via the SENSE pin for improved accuracy or system-level reference synchronization. The LTC2203IUK#TRPBF does not require external reference components for basic operation.
How does the internal dither feature improve performance of the LTC2203IUK#TRPBF?
The internal dither feature of the LTC2203IUK#TRPBF injects controlled noise into the ADC core to randomize quantization error, thereby reducing harmonic distortion and improving spurious-free dynamic range (SFDR) at low input signal levels. With dither enabled, SFDR reaches 115dBFS at –25dBFS input (1MHz), a ≥10dB improvement over dither-off operation. This makes the LTC2203IUK#TRPBF especially valuable in spectrum analysis and weak-signal detection applications where spurious content must be minimized.
What is the purpose of the OF (Out-of-Range) pin on the LTC2203IUK#TRPBF?
The OF (Out-of-Range) pin on the LTC2203IUK#TRPBF is an active-high digital flag that asserts when the differential analog input exceeds the configured full-scale range - indicating potential clipping or saturation. It provides real-time hardware-level detection without requiring post-acquisition analysis, enabling immediate corrective action such as PGA gain adjustment or AGC loop response. This feature is directly implemented in the LTC2203IUK#TRPBF's analog front-end and requires no configuration or clocking.
Can the LTC2203IUK#TRPBF operate with a 1.8V digital output supply (OVDD)?
Yes - the LTC2203IUK#TRPBF supports OVDD from 0.5V to 3.6V, including 1.8V. At OVDD = 1.8V, the VOH is guaranteed ≥1.79V and VOL ≤0.1V under specified load conditions, ensuring compatibility with 1.8V FPGA or ASIC I/O standards. This eliminates the need for external level translators and simplifies integration into mixed-voltage systems - a key design advantage built into the LTC2203IUK#TRPBF's output driver architecture.
LTC2203IUK#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:
- -40°C ~ 85°C
- Supplier Device Package:
- 48-QFN (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2203IUK#TRPBF FAQ
1.How can I place an order for LTC2203IUK#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2203IUK#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 LTC2203IUK#TRPBF reliable?
The price and inventory of LTC2203IUK#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2203IUK#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2203IUK#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2203IUK#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2203IUK#TRPBF?
LTC2203IUK#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2203IUK#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 LTC2203IUK#TRPBF?
For technical support, including LTC2203IUK#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2203IUK#TRPBF requirements.
6.How does Aetrix verify that LTC2203IUK#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2203IUK#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 LTC2203IUK#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2203IUK#TRPBF?
All LTC2203IUK#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2203IUK#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 LTC2203IUK#TRPBF part is unused and in its original packaging.
Return procedure for LTC2203IUK#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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