LTC2140-14
PRODUCTION14-Bit, 25Msps Low Power Dual ADCs
- Part Models
- 4
- 1ku List Price
- Starting From $21.90
Part Details
- Two-Channel Simultaneously Sampling ADC
- 73.2dB SNR
- 90dB SFDR
- Low Power: 95mW/67mW/50mW Total 48mW/34mW/25mW per Channel
- Single 1.8V Supply
- CMOS, DDR CMOS, or DDR LVDS Outputs
- Selectable Input Ranges: 1VP-P to 2VP-P
- 750MHz Full Power Bandwidth S/H
- Optional Data Output Randomizer
- Optional Clock Duty Cycle Stabilizer
- Shutdown and Nap Modes
- Serial SPI Port for Configuration
- 64-Pin (9mm × 9mm) QFN Package
The LTC2142-14/LTC2141-14/LTC2140-14 are 2-channel simultaneous sampling 14-bit A/D converters designed for digitizing high frequency, wide dynamic range signals. They are perfect for demanding communications applications with AC performance that includes 73.2dB SNR and 90dB spurious free dynamic range (SFDR). Ultralow jitter of 0.08psRMS allows undersampling of IF frequencies with excellent noise performance.
DC specs include ±1LSB INL (typ), ±0.3LSB DNL (typ) and no missing codes over temperature. The transition noise is 1.2LSBRMS.
The digital outputs can be either full rate CMOS, double data rate CMOS, or double data rate LVDS. A separate output power supply allows the CMOS output swing to range from 1.2V to 1.8V.
The ENC+ and ENC– inputs may be driven differentially or single-ended with a sine wave, PECL, LVDS, TTL, or CMOS inputs. An optional clock duty cycle stabilizer allows high performance at full speed for a wide range of clock duty cycles.
| Bits | |
| LTC2140-12 | 12 |
| LTC2140-14 | 14 |
Applications
- Communications
- Cellular Base Stations
- Software Defined Radios
- Portable Medical Imaging
- Multi-Channel Data Acquisition
- Nondestructive Testing
Documentation
Data Sheet 1
Reliability Data 1
User Guide 1
Product Selector Card 2
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. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTC2140CUP-14#PBF | 64-Lead QFN (9mm x 9mm x 0.75mm w/ EP) | ||
| LTC2140CUP-14#TRPBF | 64-Lead QFN (9mm x 9mm x 0.75mm w/ EP) | ||
| LTC2140IUP-14#PBF | 64-Lead QFN (9mm x 9mm x 0.75mm w/ EP) | ||
| LTC2140IUP-14#TRPBF | 64-Lead QFN (9mm x 9mm x 0.75mm w/ EP) |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Evaluation Software 1
LinearLab Tools
A collection of Matlab and Python programs that provide direct access to Linear Technology’s data converter evaluation boards.
Can't find the software or driver you need?
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Fully Differential Amplifiers 3 | ||
| LTC6412 | LAST TIME BUY | 800MHz, 31dB Range Analog-Controlled VGA |
| LTC6409 | RECOMMENDED FOR NEW DESIGNS | 10GHz GBW, 1.1nV/√Hz Differential Amplifier/ADC Driver |
| LTC6406 | LAST TIME BUY | 3GHz, Low Noise, Rail-to-Rail Input Differential Amplifier/Driver |
| Integer-N PLL 1 | ||
| LTC6946 | LAST TIME BUY | Ultralow Noise and Spurious 0.37GHz to 6.39GHz Integer-N Synthesizer with Integrated VCO |
Tools & Simulations
IBIS Model 1
Evaluation Kits
LTC2140-14: 14-bit 25Msps Dual ADC, DDR LVDS Outputs, 5-140MHz, Requires DC890, LVDS_XFMR and DC1075