LTC2157-14
PRODUCTIONDual 14-Bit 250Msps ADCs
- Part Models
- 4
- 1ku List Price
- Starting From $169.02
Part Details
- 70dB SNR
- 90dB SFDR
- Low Power: 650mW/616mW/567mW 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 12-Bit Versions
- 64-Pin (9mm × 9mm) QFN Package
The LTC2157-14/LTC2156-14/LTC2155-14 are 2-channel simultaneous sampling 250Msps/210Msps/170Msps 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 70dB SNR and 90dB spurious free dynamic range (SFDR). The 1.25GHz input bandwidth allows the ADC to undersample high frequencies with good performance. The latency is only five clock cycles.
DC specs include ±0.85LSB INL (typ), ±0.25LSB DNL (typ) and no missing codes over temperature. The transition noise is 1.82LSBRMS.
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-14#PBF | 64-Lead QFN (9mm x 9mm x 0.75mm w/ EP) | ||
| LTC2157CUP-14#TRPBF | 64-Lead QFN (9mm x 9mm x 0.75mm w/ EP) | ||
| LTC2157IUP-14#PBF | 64-Lead QFN (9mm x 9mm x 0.75mm w/ EP) | ||
| LTC2157IUP-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
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Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Analog to Digital Converters 1 | ||
| LTM9013 | LAST TIME BUY | 300MHz Wideband Receiver |
| Differential Amplifiers 2 | ||
| LTC6409 | RECOMMENDED FOR NEW DESIGNS | 10GHz GBW, 1.1nV/√Hz Differential Amplifier/ADC Driver |
| LTC6417 | LAST TIME BUY | 1.6GHz Low Noise High Linearity Differential Buffer/16-Bit ADC Driver with Fast Clamp |
| PLL Synthesizers 1 | ||
| LTC6950 | LAST TIME BUY | 1.4GHz Low Phase Noise, Low Jitter PLL with Clock Distribution |
Tools & Simulations
IBIS Model 1
Software and Simulation 2
Evaluation Kits
LTC2157-14: 14-bit, 250Msps, 1.8V Dual ADC, DDR LVDS Outputs, 5-140MHz, requires DC1371
Resources
Software
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