LTC2157-12
PRODUCTIONDual 12-Bit 250Msps ADCs
- Part Models
- 4
- 1ku List Price
- Starting From $85.49
Part Details
- 68.5dB SNR
- 90dB SFDR
- Low Power: 628mW/592mW/545mW Total
- Single 1.8V Supply
- DDR LVDS Outputs
- Easy-to-Drive 1.5VP-P Input Range
- 1.25GHz Full-Power Bandwidth S/H
- Optional Clock Duty Cycle Stabilizer
- Low Power Sleep and Nap Modes
- Serial SPI Port for Configuration
- Pin Compatible 14-Bit Versions
- 64-Lead (9mm × 9mm) QFN Package
The LTC2157-12/LTC2156-12/LTC2155-12 are a family of dual 250Msps/210Msps/170Msps 12-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 68.5dB SNR and 90dB spurious free dynamic range (SFDR). The 1.25GHz input bandwidth allows the ADC to achieve high undersampling ratio with very low attenuation. The latency is only five clock cycles.
DC specs include ±0.26LSB INL (typ), ±0.16LSB DNL (typ) and no missing codes over temperature. The transition noise is 0.54LSBRMS.
The digital outputs are double data rate (DDR) LVDS.
The ENC+ and ENC– inputs can be driven differentially 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 | |
| LTC2157-12 | 12 |
| LTC2157-14 | 14 |
Applications
- Communications
- Cellular Basestations
- Software Defined Radios
- Medical Imaging
- High Definition Video
- Testing and Measurement Instruments
Documentation
Data Sheet 1
Reliability Data 1
User Guide 1
Product Selector Card 1
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 |
|---|---|---|---|
| LTC2157CUP-12#PBF | 64-Lead QFN (9mm x 9mm x 0.75mm w/ EP) | ||
| LTC2157CUP-12#TRPBF | 64-Lead QFN (9mm x 9mm x 0.75mm w/ EP) | ||
| LTC2157IUP-12#PBF | 64-Lead QFN (9mm x 9mm x 0.75mm w/ EP) | ||
| LTC2157IUP-12#TRPBF | 64-Lead QFN (9mm x 9mm x 0.75mm w/ EP) |
This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Clock Generation Devices 1 | ||
| LTC6950 | Obsolete | 1.4GHz Low Phase Noise, Low Jitter PLL with Clock Distribution |
| Fully Differential Amplifiers 1 | ||
| LTC6417 | LAST TIME BUY | 1.6GHz Low Noise High Linearity Differential Buffer/16-Bit ADC Driver with Fast Clamp |
| Signal Chain µModule Receivers 1 | ||
| LTM9013 | LAST TIME BUY | 300MHz Wideband Receiver |
| Standard High Speed A/D Converters 1 | ||
| LTC2158-14 | NOT RECOMMENDED FOR NEW DESIGNS | Dual 14-Bit 310Msps ADC |
Tools & Simulations
Software and Simulation 2
IBIS Model 1
Evaluation Kits
LTC2157-12: 12-bit, 250Msps, 1.8V Dual ADC, DDR LVDS Outputs, 5-140MHz, requires DC1371