Overview
The LTC2140IUP-14 is a 2-channel simultaneous sampling 14-bit analog-to-digital converter (ADC) designed by Analog Devices Inc. This device is optimized for digitizing high-frequency, wide dynamic range signals, making it ideal for demanding communications and other high-performance applications. The LTC2140IUP-14 features low power consumption, high signal-to-noise ratio (SNR), and spurious free dynamic range (SFDR), along with ultralow jitter, which enables excellent noise performance even when undersampling IF frequencies.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Number of Bits | 14 | |
| Sampling Rate | 25 Msps | |
| Signal-to-Noise Ratio (SNR) | 73.2 dB | |
| Spurious Free Dynamic Range (SFDR) | 90 dB | |
| Power Consumption (Total) | 50 mW | |
| Power Consumption (Per Channel) | 25 mW | |
| Analog Supply Voltage | 1.7 V to 1.9 V | V |
| Digital Supply Voltage | 1.7 V to 1.9 V | V |
| Input Type | Differential | |
| Input Range | 1 V to 2 V (P-P) | |
| Full Power Bandwidth S/H | 750 MHz | |
| Output Modes | CMOS, DDR CMOS, DDR LVDS | |
| Package Type | 64-Pin QFN (9mm x 9mm) | |
| Operating Temperature Range | -40°C to 85°C |
Key Features
- Two-channel simultaneous sampling ADC
- Low power consumption: 50 mW total, 25 mW per channel
- Single 1.8V supply
- CMOS, DDR CMOS, or DDR LVDS outputs
- Selectable input ranges: 1 V to 2 V (P-P)
- 750 MHz full power bandwidth S/H
- Optional data output randomizer and clock duty cycle stabilizer
- Shutdown and nap modes for power management
- Serial SPI port for configuration
- 64-Pin QFN package (9mm x 9mm)
- Ultralow jitter of 0.08 ps RMS
Applications
- Communications
- Cellular Base Stations
- Software Defined Radios
- Portable Medical Imaging
- Multi-Channel Data Acquisition
- Nondestructive Testing
Q & A
- What is the sampling rate of the LTC2140IUP-14?
The sampling rate of the LTC2140IUP-14 is up to 25 Msps.
- What is the signal-to-noise ratio (SNR) of the LTC2140IUP-14?
The SNR of the LTC2140IUP-14 is 73.2 dB.
- What are the power consumption specifications of the LTC2140IUP-14?
The total power consumption is 50 mW, with 25 mW per channel.
- What are the output modes available for the LTC2140IUP-14?
The output modes include CMOS, DDR CMOS, and DDR LVDS.
- What is the full power bandwidth of the sample-and-hold (S/H) circuit?
The full power bandwidth of the S/H circuit is 750 MHz.
- Does the LTC2140IUP-14 support differential or single-ended inputs?
The LTC2140IUP-14 supports both differential and single-ended inputs.
- What is the operating temperature range of the LTC2140IUP-14?
The operating temperature range is -40°C to 85°C.
- What package type is used for the LTC2140IUP-14?
The LTC2140IUP-14 is packaged in a 64-Pin QFN (9mm x 9mm).
- Does the LTC2140IUP-14 have power management features?
Yes, it includes shutdown and nap modes for power management.
- How is the LTC2140IUP-14 configured?
The LTC2140IUP-14 is configured via a serial SPI port.
