Features and Benefits
- 6.0Gbps JESD204B Interface
- Only One Output Lane Required for Both ADCs (FS ≤ 150Msps)
- 70dBFS SNR
- 90dBFS SFDR
- Low Power: 751mW Total
- Single 1.8V Supply
- Easy to Drive 1.5VP-P Input Range
- 1.25GHz Full Power Bandwidth S/H
- Optional Clock Divide by Two
- Optional Clock Duty Cycle Stabilizer
- Low Power Sleep and Nap Modes
- Serial SPI Port for Configuration
- 48-Lead (7mm × 7mm) QFN Package
The LTC2122 is a 2-channel simultaneous sampling 170Msps 14-bit A/D converter with serial JESD204B outputs. It is designed for digitizing high frequency, wide dynamic range signals. It is perfect for demanding communications applications with AC performance that includes 70dBFS SNR and 90dBFS spurious free dynamic range (SFDR). The 1.25GHz input bandwidth allows the ADC to under-sample high frequencies.
The JESD204B serial interface simplifies the PCB design by minimizing the number of data lines required. At 170Msps, only two 3.4Gbps output lanes are required. For sample rates up to 150Msps, both ADCs may share the same output lane at up to 6.0Gbps.
The DEVCLK+ and DEVCLK– inputs can be driven differentially with sine wave, PECL, or LVDS signals. An optional clock divide-by-two circuit or clock duty cycle stabilizer maintains high performance at full speed for a wide range of clock duty cycles.
- Cellular Base Stations
- Software Defined Radios
- Medical Imaging
- High Definition Video
- Test and Measurement Instrumentation
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (2)
Demonstration Circuit 2226A-A is a reference design for a four-channel, 250Msps ADC system consisting of two LTC2123, dual 14-bit 250Msps ADCs and a JESD204B Subclass 1 clocking solution based on the LTC6951 Clock Synthesizer with Integrated VCO. Other dash options reserved for future use. No external clock source is required to operate the board; however, the on-board 100MHz reference oscillator may be bypassed, allowing synchronization to other equipment.
Companion Board: Kintex Board
Demonstration circuit 1974 supports the LTC2123 14-bit dual ADC family with JESD204B compliant CML outputs. It was specially designed for applications that require single-ended AC coupled inputs. The DC1974 supports the LTC2123 and LTC2122 with sample rates from 250Msps to 170Msps.
Companion Board: Kintex Board
Software & Systems Requirements
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
Sample & Buy
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