Overview
The LTC2221CUP, produced by Analog Devices Inc., is a high-performance 12-bit analog-to-digital converter (ADC) designed for digitizing high-frequency, wide dynamic range signals. This ADC is part of the LTC2220 and LTC2221 family, which are optimized for demanding communications applications. The LTC2221 operates at a sampling rate of 135 Msps, making it suitable for applications requiring high-speed data conversion with excellent signal integrity.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Sampling Frequency | 1 | 135 | 135 | MHz | |
| Analog Input Range | 3.1V < VDD < 3.5V | ±0.5 | ±1 | ±1 | V |
| Analog Input Common Mode | 3.1V < VDD < 3.5V | 1 | 1.6 | 1.9 | V |
| Supply Voltage (Analog and Digital) | 3.1 | 3.3 | 3.5 | V | |
| Power Dissipation | 660 | 890 | mW | ||
| Operating Temperature | 0 | 70 | °C | ||
| Package | 64-QFN (9x9) | ||||
| Number of Bits | 12 | ||||
| SNR (up to 140MHz Input) | 67.5 | dBFS | |||
| SFDR (up to 170MHz Input) | 80 | dBFS |
Key Features
- High-speed sampling rate of 135 Msps
- 12-bit resolution with no missing codes
- Excellent AC performance: 67.5 dB SNR and 80 dB SFDR up to 170 MHz input
- Low jitter of 0.15 psRMS, enabling undersampling of IF frequencies with excellent noise performance
- Selectable input ranges: ±0.5V or ±1V
- Low power dissipation: 660 mW to 890 mW
- LVDS, CMOS, or demultiplexed CMOS output options
- Optional clock duty cycle stabilizer
- Shutdown and nap modes for power management
- Data ready output clock
- 64-pin 9mm x 9mm QFN package
Applications
The LTC2221CUP is ideal for various high-speed data acquisition applications, including:
- Demanding communications systems
- Radar and electronic warfare systems
- Medical imaging and diagnostic equipment
- High-speed data acquisition systems
- Test and measurement instruments
Q & A
- What is the sampling rate of the LTC2221CUP?
The LTC2221CUP has a sampling rate of 135 Msps.
- What is the resolution of the LTC2221CUP?
The LTC2221CUP has a 12-bit resolution.
- What are the input range options for the LTC2221CUP?
The LTC2221CUP has selectable input ranges of ±0.5V or ±1V.
- What is the power dissipation of the LTC2221CUP?
The power dissipation of the LTC2221CUP ranges from 660 mW to 890 mW.
- What output formats are available for the LTC2221CUP?
The LTC2221CUP supports LVDS, CMOS, or demultiplexed CMOS output formats.
- Does the LTC2221CUP have power management features?
- What is the operating temperature range of the LTC2221CUP?
The operating temperature range of the LTC2221CUP is from 0°C to 70°C.
- What is the package type of the LTC2221CUP?
The LTC2221CUP is packaged in a 64-pin 9mm x 9mm QFN package.
- Is the LTC2221CUP RoHS compliant?
- What are some typical applications of the LTC2221CUP?
The LTC2221CUP is typically used in demanding communications systems, radar and electronic warfare systems, medical imaging, high-speed data acquisition systems, and test and measurement instruments.
