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Analog Devices Inc. LTC2250CUH#TRPBF
- Part No.:
- LTC2250CUH#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
LTC2250CUH#TRPBF.pdf
- Description:
- IC ADC 10BIT PIPELINED 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,521
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Product details
Overview
LTC2250CUH#TRPBF from Analog Devices (formerly Linear Technology) is a 10-bit, 105Msps low-noise pipelined analog-to-digital converter designed for high-frequency signal digitization in demanding communications and imaging systems. It operates from a single 3V supply (2.85V–3.4V), delivers 61.6dB SNR and 85dB SFDR at 70MHz input, supports ±0.5V to ±1V differential input range, and features clock duty cycle stabilization for robust sampling timing.
For engineers reviewing the LTC2250CUH#TRPBF datasheet, LTC2250CUH#TRPBF pinout, LTC2250CUH#TRPBF application, or LTC2250CUH#TRPBF equivalent, key selection criteria include its 105Msps sample rate, 640MHz full-power bandwidth, flexible reference configuration via SENSE pin, low 320mW power consumption, and compatibility with high-speed differential input drive topologies.
Technical Context
The LTC2250CUH#TRPBF implements a six-stage CMOS pipelined ADC architecture with 5-cycle pipeline latency and integrated sample-and-hold with 640MHz full-power bandwidth. Its internal 1.5V bandgap reference supports programmable input ranges (±0.5V or ±1V) via the SENSE pin, and the clock duty cycle stabilizer enables consistent AC performance across wide input clock duty cycles.
It uses differential analog inputs (AIN+, AIN−), supports offset binary or 2's complement output formats selected by MODE pin voltage, and provides digital outputs (D0–D9, OF) with configurable OVDD (0.5V–3.6V) for interfacing to diverse logic families. Shutdown and nap modes reduce power to 2mW and 15mW respectively.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit with no missing codes - guarantees monotonic transfer function and deterministic code mapping across full dynamic range. |
| Sample Rate | 105Msps - enables Nyquist-limited bandwidth up to 52.5MHz for real-time baseband or IF sampling applications. |
| SNR @ 70MHz | 61.5dB (typ) - defines effective number of bits (ENOB ≈ 10.0) and limits detectable signal amplitude in presence of quantization + thermal noise. |
| SFDR @ 70MHz | 83dB (typ) - determines spurious-free dynamic range for multi-tone signals, critical for spectral purity in comms receivers. |
| Power Dissipation | 320mW (typ) at 105Msps - enables thermal management in dense PCB layouts without forced air cooling. |
| Input Bandwidth | 640MHz full-power - supports direct RF sampling of L-band signals or high-fidelity IF digitization with minimal amplitude roll-off. |
| INL / DNL | ±0.6LSB / ±0.6LSB (max over temp) - ensures accurate amplitude fidelity and linearity-critical measurements in instrumentation and ultrasound beamforming. |
Pinout & Package
Package: 32-lead (5mm × 5mm) plastic QFN with exposed pad (Pin 33 = GND). Exposed pad must be soldered to PCB ground for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN+, AIN− | Differential analog input pair | Accepts ±0.5V to ±1V differential signal; common-mode bias set by VCM (1.5V) or external source. |
| REFH, REFL | ADC reference high/low terminals | Shorted pairs; require local 0.1µF + 2.2µF bypassing to GND for stable reference voltage generation. |
| VDD (Pins 7, 32) | Analog supply | 3V ±0.15V supply; bypass each pin with 0.1µF ceramic capacitor to GND. |
| CLK | Sampling clock input | Single-ended; rising edge initiates sample acquisition; duty cycle stabilizer improves jitter tolerance. |
| SHDN, OE | Power mode control | SHDN=VDD + OE=GND → nap mode (15mW); SHDN=VDD + OE=VDD → shutdown (2mW). |
| MODE | Output format & stabilizer control | GND → offset binary, stabilizer off; 1/3VDD → offset binary, stabilizer on; 2/3VDD → 2's complement, stabilizer on. |
| SENSE | Input range programming | VCM → ±0.5V range; VDD → ±1V range; external 0.5–1V → ±VSENSE range. |
| D0–D9 | Parallel digital outputs | 10-bit MSB-first parallel data; D9 = MSB; output voltage swing referenced to OVDD (0.5–3.6V). |
| OVDD, OGND | Digital output supply | Independent supply allows interface to 0.5V–3.3V logic families without level shifters. |
| VCM | 1.5V reference output/input | Provides common-mode bias for differential drivers; requires ≥2.2µF bypass to GND. |
| OF | Over/underflow flag | Active-high pulse indicates input exceeded full-scale range during conversion cycle. |
Key Features
| Feature | Design Value |
|---|---|
| Flexible input range selection | Configurable ±0.5V or ±1V differential full-scale via SENSE pin voltage - eliminates need for external gain stages in multi-range systems. |
| Integrated clock duty cycle stabilizer | Enables high AC performance (61.5dB SNR, 83dB SFDR) even with asymmetric clock sources (e.g., PLL outputs), reducing system-level jitter cleanup requirements. |
| Low aperture jitter (0.2ps RMS) | Minimizes sampling-time uncertainty, preserving SNR at high input frequencies - critical for >50MHz IF sampling in radar and spectrum analyzers. |
| Separate analog/digital supplies | VDD (analog) and OVDD (output) decoupled supplies prevent digital switching noise from degrading analog performance - simplifies PCB layout and filtering. |
| On-chip 1.5V reference with tempco ≤25ppm/°C | Stable internal reference reduces BOM count and board space vs. external references while maintaining ±0.6LSB INL over temperature. |
Applications
| Wireless Base Station Receivers | Medical Ultrasound Beamformers |
|---|---|
Use Scenario: Digitizing 40–60MHz IF signals from RF front-end in LTE/FDD-TDD macrocell receivers. IC Role / Device Role / Timing Role: High-speed ADC capturing complex baseband I/Q or real IF samples with minimal distortion and spurs. Use Value: 83dB SFDR prevents adjacent-channel interference masking weak signals; 105Msps sample rate supports 2× oversampling for improved anti-alias filter design. | Use Scenario: Sampling echo return signals from phased-array transducers operating at 2–15MHz center frequencies. IC Role / Device Role / Timing Role: Precision digitizer in receive beamformer path, requiring low INL for accurate time-delay compensation. Use Value: ±0.6LSB INL ensures sub-nanosecond timing accuracy across channel array; 61.5dB SNR preserves contrast resolution in B-mode imaging. |
| Portable Spectrum Analyzers | High-Speed Data Acquisition Systems |
Use Scenario: Real-time FFT-based spectral analysis of 0–50MHz signals in handheld test equipment. IC Role / Device Role / Timing Role: Core ADC in direct-conversion receiver architecture with wide instantaneous bandwidth. Use Value: 640MHz full-power bandwidth enables flat response across entire 0–50MHz span; low 320mW power enables battery operation. | Use Scenario: Digitizing transient waveforms (e.g., oscilloscope front-end, fault detection in industrial drives). IC Role / Device Role / Timing Role: High-fidelity capture engine with deterministic latency (5 cycles) for trigger-aligned waveform reconstruction. Use Value: 5-cycle fixed pipeline latency enables precise time-of-arrival measurement; no missing codes guarantees glitch-free waveform display. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9215BRUZ-105 | 10-bit, 105Msps; requires dual supply (3.3V analog + 2.5V digital); no integrated duty cycle stabilizer; 62dB SNR @ 70MHz. | Higher power (420mW); less tolerant of clock asymmetry; requires external reference and level-shifting for LVDS outputs. | Choose when LVDS output interface or tighter SNR spec at DC–10MHz is required; avoid if clock jitter margin is constrained. |
| LTC2252CUH#TRPBF | 12-bit, 105Msps; same package and pinout; higher power (410mW); 66.5dB SNR @ 70MHz; identical feature set (stabilizer, SENSE, MODE). | Higher resolution for precision instrumentation; increased power and cost; same PCB layout but higher thermal load. | Direct upgrade path for resolution-sensitive applications (e.g., MRI gradient control); retains all interface and timing compatibility. |
Compared with AD9215BRUZ-105, LTC2250CUH#TRPBF offers superior clock jitter resilience and lower power; compared with LTC2252CUH#TRPBF, it trades 2 bits of resolution for 90mW lower power and reduced data bus width - ideal for bandwidth-constrained FPGA interfaces.
Availability
LTC2250CUH#TRPBF is available at Aetrix Electronics and suitable for wireless infrastructure, medical imaging, portable instrumentation, and high-speed data acquisition requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LTC2250CUH#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 LTC2250CUH#TRPBF belongs to ADI's high-speed precision ADC product line, engineered specifically for applications demanding wide bandwidth, low distortion, and low power in compact form factors - including communications receivers, medical ultrasound, and portable test equipment.
FAQ
What is the maximum input frequency supported by the LTC2250CUH#TRPBF before significant amplitude roll-off occurs?
The LTC2250CUH#TRPBF has a 640MHz full-power bandwidth, meaning input signals up to 640MHz maintain ≤3dB amplitude attenuation relative to low-frequency response. For Nyquist-compliant sampling, the maximum usable input frequency is 52.5MHz (half of 105Msps), but the device can digitize higher-frequency signals (e.g., IF sampling) with predictable roll-off beyond that point. Performance data confirms usable SFDR up to 140MHz.
How does the SENSE pin configure the input range on the LTC2250CUH#TRPBF?
The SENSE pin on the LTC2250CUH#TRPBF selects full-scale differential input range: connecting SENSE to VCM (1.5V) sets ±0.5V range; connecting to VDD (3V) sets ±1V range; applying an external 0.5–1V voltage sets ±VSENSE. This eliminates external gain resistors and enables dynamic range optimization per signal chain requirement without hardware changes.
Does the LTC2250CUH#TRPBF support both offset binary and 2's complement output formats?
Yes, the LTC2250CUH#TRPBF supports both output formats. The MODE pin voltage determines selection: GND or VDD configures offset binary; 1/3VDD or 2/3VDD configures 2's complement. The same pin also controls clock duty cycle stabilizer enable/disable, allowing simultaneous format and timing optimization in a single control line.
What is the purpose of the OF (over/under flow) pin on the LTC2250CUH#TRPBF?
The OF pin on the LTC2250CUH#TRPBF is an active-high flag indicating when the analog input exceeds the configured full-scale range (±VSENSE) during a conversion cycle. It pulses synchronously with the data output, enabling real-time saturation detection in FPGA or DSP firmware for automatic gain control (AGC) or signal clipping alerts without post-processing overhead.
Can the LTC2250CUH#TRPBF operate with a 2.5V OVDD supply for interfacing to 2.5V logic?
Yes, the LTC2250CUH#TRPBF supports OVDD from 0.5V to 3.6V. At OVDD = 2.5V, VOH is guaranteed ≥2.49V and VOL ≤0.09V under 1.6mA load, meeting standard 2.5V CMOS logic thresholds. This allows direct connection to 2.5V FPGA I/O banks without level translators, reducing component count and signal integrity risk.
LTC2250CUH#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 32-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- 105M
- Number of Inputs:
- 1
- Input Type:
- Differential, Single Ended
- 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:
- 2.85V ~ 3.4V
- Voltage - Supply, Digital:
- 2.85V ~ 3.4V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 32-QFN (5x5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2250CUH#TRPBF FAQ
1.How can I place an order for LTC2250CUH#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2250CUH#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 LTC2250CUH#TRPBF reliable?
The price and inventory of LTC2250CUH#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2250CUH#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2250CUH#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2250CUH#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2250CUH#TRPBF?
LTC2250CUH#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2250CUH#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 LTC2250CUH#TRPBF?
For technical support, including LTC2250CUH#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2250CUH#TRPBF requirements.
6.How does Aetrix verify that LTC2250CUH#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2250CUH#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 LTC2250CUH#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2250CUH#TRPBF?
All LTC2250CUH#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2250CUH#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 LTC2250CUH#TRPBF part is unused and in its original packaging.
Return procedure for LTC2250CUH#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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