LTC2249IUH

The LTC2249IUH is a 14-bit, 125Msps low-power ADC from Analog Devices. It features excellent dynamic performance (80dB SNR) and low power consumption (310mW at 125Msps), making it ideal for high-speed signal processing in communications, medical imaging, and test equipment.
Key features:
- 14-bit resolution at 125Msps
- LVDS outputs for reduced noise
- 1.8V supply voltage for power efficiency
- Integrated digital functions (offset correction, test patterns)
- Small 32-QFN package
The ADC supports differential inputs with a 1.25Vpp full-scale range and includes a programmable gain amplifier (PGA) for flexible signal conditioning. Its low jitter (80fs RMS) ensures high accuracy in sampling.
Applications include software-defined radios, ultrasound systems, and high-speed data acquisition. The LTC2249IUH balances performance, power, and size, making it a strong choice for demanding ADC applications.

The LTC2249IUH (14-bit, 125Msps ADC) has several equivalent or similar products from other manufacturers:
- Analog Devices: AD9643, AD9253
- Texas Instruments: ADS62P49
- Maxim Integrated: MAX19527
These alternatives offer comparable resolution (14-bit) and sampling rates (around 100-150Msps). Check datasheets for exact specs and pin compatibility.

The LTC2249IUH is a 14-bit, 125Msps ADC from Linear Technology (now part of Analog Devices).
- Pin Count: 32-pin (QFN package).
- Key Functions:
- Analog Input (Pins 1, 2): Differential inputs (IN+, IN−) for high-speed signal sampling.
- Clock Input (Pin 31): LVDS/LVCMOS-compatible sampling clock.
- Digital Outputs (Pins 4–17, 20–27): 14-bit parallel CMOS/LVDS outputs (configurable).
- Power/Ground (Multiple pins): Separate supplies for analog (AVDD), digital (DVDD), and output drivers (OVDD).
- Control Pins (e.g., Pin 30: OVDD_SEL): Configures output voltage levels (1.8V/3.3V).
Designed for high-speed applications like communications and imaging.

The LTC2249IUH, a 14-bit, 125Msps ADC from Analog Devices, is used in:
1. Communications: Software-defined radios, basebands.
2. Medical Imaging: Ultrasound, MRI signal processing.
3. Test & Measurement: High-speed data acquisition, oscilloscopes.
4. Military/Aerospace: Radar, signal intelligence.
5. Industrial: High-precision instrumentation.
Its low noise, high dynamic range, and fast sampling suit demanding applications.