LTC2140-12 - 12-Bit, 25Msps Low Power Dual ADCs
Features
- 2-Channel Simultaneously Sampling ADC
- 70.8dB SNR
- 89dB SFDR
- Low Power: 92mW/65mW/48mW Total 46mW/33mW/24mW 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
Typical Application
Description
The LTC®2142-12/LTC2141-12/LTC2140-12 are 2-channel simultaneous sampling 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 70.8dB SNR and 89dB spurious free dynamic range (SFDR). Ultralow jitter of 0.08psRMS allows undersampling of IF frequencies with excellent noise performance.
DC specs include ±0.3LSB INL (typ), ±0.1LSB DNL (typ) and no missing codes over temperature. The transition noise is 0.3LSBRMS.
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.
Packaging
For complete and up to date package information and drawings, please refer to our packaging page
QFN-64
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 |
|---|---|---|---|---|---|---|
| LTC2140CUP-12#PBF | QFN | 64 | C | $15.64 | $10.95 | View |
| LTC2140CUP-12#TRPBF | QFN | 64 | C | $11.01 | View | |
| LTC2140CUP-14#PBF | QFN | 64 | C | $24.29 | $17.00 | View |
| LTC2140CUP-14#TRPBF | QFN | 64 | C | $17.06 | View | |
| LTC2140IUP-12#PBF | QFN | 64 | I | $17.99 | $12.59 | View |
| LTC2140IUP-12#TRPBF | QFN | 64 | I | $12.65 | View | |
| LTC2140IUP-14#PBF | QFN | 64 | I | $27.93 | $19.55 | View |
| LTC2140IUP-14#TRPBF | QFN | 64 | I | $19.61 | View | |
| Buy Now • Request Samples | ||||||
Demo Boards
Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about 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 |
|---|---|---|---|
| DC1620A-R | LTC2140-12: 12-bit 25Msps Dual ADC, DDR LVDS Outpu | $200.00 | |
| Buy Now | |||
Companion Boards
| Part Number | Description | Price | Documentation |
|---|---|---|---|
| DC1075A | Clock Divider board | $50.00 | |
| DC1164A | High Speed ADC Signal Source | $149.00 | |
| 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 | |
| DC890_LVDS_XFMR | LVDS Power Transformer, goes with DC890B/ LVDS ou | Contact Factory | |
| DC890B | High Speed (up to 250Mbps, CMOS/LVDS) USB Data Co | $300.00 | |
| Buy Now | |||
Applications
- Communications
- Cellular Base Stations
- Software Defined Radios
- Portable Medical Imaging
- Multi-Channel Data Acquisition
- Nondestructive Testing
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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.