LTC2268-14 - 14-Bit, 125Msps Low Power Dual ADCs
Features
- 2-Channel Simultaneous Sampling ADC
- 73.1dB SNR
- 88dB SFDR
- Low Power: 299mW/243mW/203mW Total
- 150mW/121mW/101mW Per Channel
- Single 1.8V Supply
- Serial LVDS Outputs: 1 or 2 Bits Per Channel
- Selectable Input Ranges: 1VP-P to 2VP-P
- 800MHz Full Power Bandwidth S/H
- Shutdown and Nap Modes
- Serial SPI Port for Configuration
- Pin Compatible 14-Bit and 12-Bit Versions
- 40-Pin (6mm × 6mm) QFN Package
Typical Application
Description
The LTC2268-14/LTC2267-14/LTC2266-14 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 73.1dB SNR and 88dB spurious free dynamic range (SFDR). Ultralow jitter of 0.15psRMS 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 a low 1.2LSBRMS.
The digital outputs are serial LVDS to minimize the number of data lines. Each channel outputs two bits at a time (2-lane mode). At lower sampling rates there is a one bit per channel option (1-lane mode). The LVDS drivers have optional internal termination and adjustable output levels to ensure clean signal integrity.
The ENC+ and ENC– inputs may be driven differentially or single-ended with a sine wave, PECL, LVDS, TTL, or CMOS inputs. An internal clock duty cycle stabilizer allows high performance at full speed for a wide range of clock duty cycles.
Packaging
For complete and up to date package information and drawings, please refer to our packaging page
QFN-40
Order Info
- Part numbers ending in PBF are lead free. Please contact LTC marketing for information on lead based finish parts.
- Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
- Please refer to our general ordering information or the product datasheet for more details
Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) | Price (1k)* | RoHS Data |
|---|---|---|---|---|---|---|
| LTC2268CUJ-12#PBF | QFN | 40 | C | $65.36 | $45.75 | View |
| LTC2268CUJ-12#TRPBF | QFN | 40 | C | $45.81 | View | |
| LTC2268CUJ-14#PBF | QFN | 40 | C | $111.43 | $78.00 | View |
| LTC2268CUJ-14#TRPBF | QFN | 40 | C | $78.06 | View | |
| LTC2268IUJ-12#PBF | QFN | 40 | I | $78.43 | $54.90 | View |
| LTC2268IUJ-12#TRPBF | QFN | 40 | I | $54.96 | View | |
| LTC2268IUJ-14#PBF | QFN | 40 | I | $133.71 | $93.60 | View |
| LTC2268IUJ-14#TRPBF | QFN | 40 | I | $93.66 | View | |
| Buy Now • Request Samples | ||||||
Demo Boards
Linear Technology demo boards are offered free of charge to qualified customers. Contact your local sales office or distributor to request a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.| Part Number | Description | Price | Documentation |
|---|---|---|---|
| DC1532A-A | LTC2268-14 | 14-Bit, 125Msps, 1.8V Dual Serial ADC, 5MHz < Ain < 170MHz, req DC1371 and DC1075 | $200.00 | |
| Buy Now | |||
Companion Boards
| Part Number | Description | Price | Documentation |
|---|---|---|---|
| DC1075A | Clock Divider board | $50.00 | |
| DC1164A | High Speed ADC Signal Source | $300.00 | |
| DC1216A-A | 100MHz High Speed ADC Clock Source | $150.00 | |
| DC1216A-B | 122.88MHz High Speed ADC Clock Source | $150.00 | |
| DC1216A-C | 80MHz High Speed ADC Clock Source | $150.00 | |
| DC1371A | High Speed (>250Mbps) USB Data Collection Board | $950.00 | |
| Buy Now | |||
Applications
- Communications
- Cellular Base Stations
- Software Defined Radios
- Portable Medical Imaging
- Multichannel Data Acquisition
- Nondestructive Testing
Simulate
LTspice IV is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. To download LTspice IV and other FREE simulation tools, please visit our Design Simulation page.
Technical Support
- For immediate technical assistance, contact your local sales office or distributor or call 1-800-4-LINEAR (US customers only) or 408-432-1900.
- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.