Overview
The LTC2122IUK, produced by Analog Devices Inc., is a dual-channel, 14-bit analog-to-digital converter (ADC) designed for high-performance applications. This ADC operates at a sampling rate of 170 Msps and features simultaneous sampling capabilities, making it ideal for digitizing high-frequency, wide dynamic range signals. The device is particularly suited for demanding communications applications due to its excellent AC performance, including a 70 dBFS signal-to-noise ratio (SNR) and a 90 dBFS spurious free dynamic range (SFDR). The LTC2122IUK also incorporates a JESD204B serial interface, which simplifies PCB design by minimizing the number of data lines required.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Resolution | 14 | Bits |
| Sampling Rate | 170 | Msps |
| Input Bandwidth | 1.25 GHz | |
| SNR | 70 dBFS | |
| SFDR | 90 dBFS | |
| Supply Voltage (Digital/Analog) | 1.7 V ~ 1.9 V | V |
| Package | 48-QFN (7x7) with Exposed Pad | |
| Operating Temperature | -40°C ~ 85°C | °C |
| Number of Inputs | 2 | |
| Number of A/D Converters | 2 | |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | |
| Data Interface | JESD204B |
Key Features
- Simultaneous sampling of two channels at 170 Msps.
- High AC performance with 70 dBFS SNR and 90 dBFS SFDR.
- 1.25 GHz input bandwidth, allowing for under-sampling of high frequencies.
- JESD204B serial interface for simplified PCB design and reduced data lines.
- Single 1.8V power supply for both digital and analog sections.
- Exposed pad for improved thermal performance.
- Lead-free and RoHS compliant.
Applications
- Demanding communications applications, such as wireless base stations and software-defined radios.
- High-frequency signal processing in radar, electronic warfare, and surveillance systems.
- Medical imaging and diagnostic equipment requiring high-resolution ADCs.
- Test and measurement instruments, including spectrum analyzers and oscilloscopes.
Q & A
- What is the sampling rate of the LTC2122IUK?
The LTC2122IUK samples at a rate of 170 Msps.
- How many channels does the LTC2122IUK support?
The LTC2122IUK supports two simultaneous sampling channels.
- What is the resolution of the LTC2122IUK?
The resolution of the LTC2122IUK is 14 bits.
- What is the input bandwidth of the LTC2122IUK?
The input bandwidth of the LTC2122IUK is 1.25 GHz.
- What type of serial interface does the LTC2122IUK use?
The LTC2122IUK uses a JESD204B serial interface.
- What is the operating temperature range of the LTC2122IUK?
The operating temperature range of the LTC2122IUK is -40°C to 85°C.
- Is the LTC2122IUK lead-free and RoHS compliant?
Yes, the LTC2122IUK is lead-free and RoHS compliant.
- What is the package type of the LTC2122IUK?
The LTC2122IUK is packaged in a 48-QFN (7x7) with an exposed pad.
- What are some typical applications of the LTC2122IUK?
Typical applications include demanding communications, high-frequency signal processing, medical imaging, and test and measurement instruments.
- What is the power supply voltage for the LTC2122IUK?
The power supply voltage for the LTC2122IUK is 1.7 V to 1.9 V for both digital and analog sections.
