Overview
The LTC2258-12, produced by Analog Devices Inc., is a 12-bit, 65Msps ultralow power analog-to-digital converter (ADC) designed for digitizing high-frequency, wide dynamic range signals. This ADC is particularly suited for demanding communications applications, offering exceptional AC performance with a signal-to-noise ratio (SNR) of 71.1dB and a spurious free dynamic range (SFDR) of 88dB. The device features ultralow jitter of 0.17ps RMS, enabling the undersampling of IF frequencies with excellent noise performance.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Resolution | 12-bit | |
| Sampling Rate | 65 Msps | |
| Supply Voltage | 1.8V | V |
| Power Consumption | 79mW / 47mW / 34mW | mW |
| SNR | 71.1 dB | dB |
| SFDR | 88 dB | dB |
| Jitter | 0.17 ps RMS | ps |
| Input Range | 1V P-P to 2V P-P | V |
| Full-Power Bandwidth S/H | 800 MHz | MHz |
| Output Modes | CMOS, DDR CMOS, DDR LVDS | |
| Package | 40-Lead QFN (6mm x 6mm x 0.75mm w/ EP) | |
| Operating Temperature Range | 0 to 70°C | °C |
Key Features
- Ultralow power consumption: 79mW, 47mW, and 34mW in different modes.
- Single 1.8V supply voltage.
- CMOS, DDR CMOS, or DDR LVDS digital output modes.
- Selectable input ranges: 1V P-P to 2V P-P.
- 800MHz full-power bandwidth sample-and-hold (S/H).
- Optional data output randomizer and clock duty cycle stabilizer.
- Shutdown and nap modes for power management.
- Serial SPI port for configuration.
- Pin compatible with 14-bit and 12-bit versions.
Applications
- Communications systems.
- Cellular base stations.
- Software defined radios.
- Portable medical imaging.
- Multi-channel data acquisition.
- Nondestructive testing.
Q & A
- What is the resolution of the LTC2258-12 ADC?
The LTC2258-12 has a resolution of 12 bits.
- What is the maximum sampling rate of the LTC2258-12?
The maximum sampling rate is 65 Msps.
- What is the supply voltage for the LTC2258-12?
The supply voltage is 1.8V.
- What are the power consumption levels of the LTC2258-12?
The power consumption levels are 79mW, 47mW, and 34mW in different modes.
- What is the SNR of the LTC2258-12?
The SNR is 71.1 dB.
- What is the SFDR of the LTC2258-12?
The SFDR is 88 dB.
- What are the available digital output modes for the LTC2258-12?
The available output modes are CMOS, DDR CMOS, and DDR LVDS.
- Does the LTC2258-12 support shutdown and nap modes?
- What is the package type of the LTC2258-12?
The package type is a 40-Lead QFN (6mm x 6mm x 0.75mm w/ EP).
- What are some common applications of the LTC2258-12?
Common applications include communications systems, cellular base stations, software defined radios, portable medical imaging, multi-channel data acquisition, and nondestructive testing.
