Overview
The LTC2255IUH#TR, produced by Analog Devices Inc., is a 14-bit, 125Msps low power 3V analog-to-digital converter (ADC). This device is designed for digitizing high frequency, wide dynamic range signals, making it suitable for various high-performance applications. The LTC2255IUH#TR features a pipelined architecture with multiple stages, each containing an ADC, a reconstruction DAC, and an interstage residue amplifier, ensuring high accuracy and efficiency in signal conversion.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Resolution (No Missing Codes) | 14 | 14 | 14 | Bits |
| Integral Linearity Error | -5 | ±1 | 5 | LSB |
| Differential Linearity Error | -1 | ±0.5 | 1 | LSB |
| Offset Error | -12 | ±2 | 12 | mV |
| Gain Error (External Reference) | -2.5 | ±0.5 | 2.5 | %FS |
| Analog Supply Voltage (VDD) | 2.85 | 3 | 3.4 | V |
| Output Supply Voltage (OVDD) | 0.5 | 3 | 3.6 | V |
| Supply Current (IVDD) | 132 | 156 | 180 | mA |
| Power Dissipation (PDISS) | 395 | 468 | 520 | mW |
| Operating Temperature Range | -40 | 85 | °C |
Key Features
- Pipelined architecture with six stages for high-speed and high-accuracy signal conversion.
- Low power consumption with a typical supply current of 156mA and power dissipation of 468mW.
- High dynamic performance with a signal-to-noise ratio (SNR) of 72.4dB at a 5MHz input.
- Support for both internal and external reference voltages.
- Multiple operating modes including shutdown and nap modes to reduce power consumption.
- Compact 32-lead QFN package (5mm × 5mm) with an exposed pad for thermal management.
Applications
The LTC2255IUH#TR is suitable for a variety of high-performance applications, including:
- High-speed data acquisition systems.
- Medical imaging and diagnostics.
- Radar and communication systems.
- Industrial control and automation.
- Aerospace and defense systems.
Q & A
- What is the resolution of the LTC2255IUH#TR ADC?
The LTC2255IUH#TR has a resolution of 14 bits. - What is the maximum sampling rate of the LTC2255IUH#TR?
The maximum sampling rate is 125Msps. - What is the typical power consumption of the LTC2255IUH#TR?
The typical power dissipation is 468mW. - What are the operating temperature ranges for the LTC2255IUH#TR?
The operating temperature range is -40°C to 85°C. - Does the LTC2255IUH#TR support both internal and external reference voltages?
Yes, it supports both internal and external reference voltages. - What is the package type and size of the LTC2255IUH#TR?
The device is packaged in a 32-lead QFN package (5mm × 5mm). - How does the pipelined architecture of the LTC2255IUH#TR enhance its performance?
The pipelined architecture allows for high-speed and high-accuracy signal conversion by distributing the conversion process across multiple stages. - What are the shutdown and nap modes in the LTC2255IUH#TR, and how do they reduce power consumption?
The shutdown mode reduces power consumption to 2mW, and the nap mode reduces it to 15mW, both achieved by controlling the state of the CLK input pin and other control signals. - What is the signal-to-noise ratio (SNR) of the LTC2255IUH#TR at a 5MHz input?
The SNR is 72.4dB at a 5MHz input. - Is the LTC2255IUH#TR lead-free and RoHS compliant?
Yes, the part is available in lead-free and RoHS-compliant versions.
