Overview
The LTC2249IUH, produced by Analog Devices Inc., is a 14-bit, 80Msps (Mega Samples Per Second) low-power analog-to-digital converter (ADC). This device is designed to digitize high-frequency, wide dynamic range signals, making it ideal for demanding applications in imaging and communications. It operates on a single 3V supply (ranging from 2.7V to 3.4V) and consumes low power, typically 222mW. The LTC2249IUH features high AC performance with a Signal-to-Noise Ratio (SNR) of 73dB and a Spurious Free Dynamic Range (SFDR) of 90dB at a 70MHz input frequency. It is packaged in a 32-pin QFN (5mm x 5mm x 0.75mm) with an exposed pad, ensuring compact and efficient design integration.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 14 |
| Sample Rate | 80Msps |
| Supply Voltage | 2.7V to 3.4V |
| Power Consumption | 222mW |
| SNR at 70MHz Input | 73dB |
| SFDR at 70MHz Input | 90dB |
| Input Range | 1V to 2V P-P |
| Full Power Bandwidth S/H | 575MHz |
| Operating Temperature | -40°C to 85°C |
| Package Type | 32-Pin QFN (5mm x 5mm x 0.75mm) |
| Input Type | Differential, Single-Ended |
Key Features
- No missing codes over temperature.
- Flexible input range: 1V to 2V P-P.
- Clock duty cycle stabilizer for high performance across various clock duty cycles.
- Shutdown and nap modes for power management.
- Pin compatible with other family members (e.g., LTC2253, LTC2255, LTC2229, etc.).
- Separate output supply allows outputs to drive 0.5V to 3.6V logic.
- Low transition noise: 1.2LSB RMS.
Applications
- Wireless and Wired Broadband Communication
- Imaging Systems
- Ultrasound
- Spectral Analysis
- Portable Instrumentation
Q & A
- What is the sample rate of the LTC2249IUH? The sample rate of the LTC2249IUH is 80Msps.
- What is the power consumption of the LTC2249IUH? The power consumption is typically 222mW.
- What is the SNR of the LTC2249IUH at a 70MHz input frequency? The SNR is 73dB.
- What is the SFDR of the LTC2249IUH at a 70MHz input frequency? The SFDR is 90dB.
- What is the input range of the LTC2249IUH? The input range is 1V to 2V P-P.
- What is the full power bandwidth of the sample-and-hold (S/H) circuit? The full power bandwidth of the S/H circuit is 575MHz.
- What are the operating temperature ranges for the LTC2249IUH? The operating temperature ranges are -40°C to 85°C.
- What type of package does the LTC2249IUH come in? The LTC2249IUH comes in a 32-Pin QFN (5mm x 5mm x 0.75mm) package.
- Does the LTC2249IUH support differential and single-ended inputs? Yes, it supports both differential and single-ended inputs.
- What are some of the key applications for the LTC2249IUH? Key applications include wireless and wired broadband communication, imaging systems, ultrasound, spectral analysis, and portable instrumentation.
