Overview
The LTC2222-11, produced by Analog Devices Inc., is a high-performance 11-bit analog-to-digital converter (ADC) designed to digitize high-frequency, wide dynamic range signals. This ADC operates at a sample rate of 105 Msps, making it ideal for demanding communications applications. It features excellent AC performance, including a signal-to-noise ratio (SNR) of 65.4 dB and a spurious free dynamic range (SFDR) of 80 dB for signals up to 150 MHz. The ultralow jitter of 0.15 ps RMS enables undersampling of IF frequencies with excellent noise performance.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Sample Rate | 105 | Msps |
| SNR (up to 140 MHz Input) | 65.4 | dB |
| SFDR (up to 150 MHz Input) | 80 | dB |
| Full Power Bandwidth S/H | 775 | MHz |
| Analog Supply Voltage | 3.1 - 3.3 - 3.5 | V |
| Output Supply Voltage | 0.5 - 3.3 - 3.6 | V |
| Power Dissipation | 475 | mW |
| Shutdown Power | 2 | mW |
| Nap Mode Power | 35 | mW |
| Input Ranges | ±0.5V or ±1V | |
| Package Type | 48-Pin QFN (7mm x 7mm x 0.75mm) |
Key Features
- Single 3.3V supply
- CMOS outputs
- Selectable input ranges: ±0.5V or ±1V
- No missing codes
- Optional clock duty cycle stabilizer
- Shutdown and nap modes
- Data ready output clock
- Pin compatible family with other ADC models (e.g., LTC2224, LTC2234)
- Ultra-low jitter of 0.15 ps RMS
- Separate output power supply allowing CMOS output swing from 0.5V to 3.3V
Applications
- Wireless and wired broadband communication systems
- Cable head-end systems
- Power amplifier linearization
- Communications test equipment
Q & A
- What is the sample rate of the LTC2222-11 ADC?
The sample rate of the LTC2222-11 ADC is 105 Msps.
- What is the SNR of the LTC2222-11 up to 140 MHz input?
The SNR of the LTC2222-11 up to 140 MHz input is 65.4 dB.
- What is the SFDR of the LTC2222-11 up to 150 MHz input?
The SFDR of the LTC2222-11 up to 150 MHz input is 80 dB.
- What is the full power bandwidth of the sample and hold (S/H) of the LTC2222-11?
The full power bandwidth of the S/H is 775 MHz.
- What are the selectable input ranges for the LTC2222-11?
The selectable input ranges are ±0.5V or ±1V.
- Does the LTC2222-11 have any power-saving modes?
- What is the package type of the LTC2222-11?
The package type is a 48-Pin QFN (7mm x 7mm x 0.75mm).
- What is the power dissipation of the LTC2222-11?
The power dissipation is 475 mW.
- Can the LTC2222-11 be used in high-frequency applications?
- What is the jitter performance of the LTC2222-11?
The LTC2222-11 has an ultralow jitter of 0.15 ps RMS.
