DocumentationDatasheet
Reliability Data
Product Selector Card
Press Release
Software and Simulation
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Features
- Sample Rate: 125Msps/105Msps
- Single 3V Supply (2.85V to 3.4V)
- Low Power: 395mW/320mW
- 72.4dB SNR
- 88dB SFDR
- No Missing Codes
- Flexible Input: 1VP-P to 2VP-P Range
- 640MHz Full Power Bandwidth S/H
- Clock Duty Cycle Stabilizer
- Shutdown and Nap Modes
- Pin Compatible Family
125Msps: LTC2253 (12-Bit), LTC2255 (14-Bit)
105Msps: LTC2252 (12-Bit), LTC2254 (14-Bit)
80Msps: LTC2229 (12-Bit), LTC2249 (14-Bit)
65Msps: LTC2228 (12-Bit), LTC2248 (14-Bit)
40Msps: LTC2227 (12-Bit), LTC2247 (14-Bit)
25Msps: LTC2226 (12-Bit), LTC2246 (14-Bit)
10Msps: LTC2225 (12-Bit), LTC2245 (14-Bit) - 32-Pin (5mm × 5mm) QFN Package
Typical Application
Description
The LTC2255/LTC2254 are 14-bit 125Msps/105Msps, low power 3V A/D converters designed for digitizing high frequency, wide dynamic range signals. The LTC2255/ LTC2254 are perfect for demanding imaging and communications applications with AC performance that includes 72.3dB SNR and 85dB SFDR for signals at the Nyquist frequency.DC specs include ±1LSB INL (typ), ±0.5LSB DNL (typ) and no missing codes over temperature. The transition noise is a low 1.3 LSBRMS.
A single 3V supply allows low power operation. A separate output supply allows the outputs to drive 0.5V to 3.3V logic.
A single-ended CLK input controls converter operation. An optional clock duty cycle stabilizer allows high performance at full speed for a wide range of clock duty cycles.
5x5 QFN-32
Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) |
Price (1k)* |
|---|---|---|---|---|---|
| LTC2254CUH#PBF | QFN | 32 | C | $58.57 | $41.00 |
| LTC2254CUH#TRPBF | QFN | 32 | C | $41.10 | |
| LTC2254IUH#PBF | QFN | 32 | I | $70.29 | $49.20 |
| LTC2254IUH#TRPBF | QFN | 32 | I | $49.30 | |
| LTC2254CUH | QFN | 32 | C | $117.14 | $82.00 |
| LTC2254CUH#TR | QFN | 32 | C | $82.20 | |
| LTC2254IUH | QFN | 32 | I | $140.58 | $98.40 |
| LTC2254IUH#TR | QFN | 32 | I | $98.60 |
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 |
|---|---|---|---|
| DC782A-T | LTC2254IUH | High Speed ADC, VDD = +3.0V, 105Msps, 14-Bit 10MHz < Ain < 170MHz, req DC718 | $200.00 | |
| DC900A-01U | Combo Demoboard for LTC2254 and LT1993-2 (6dB) Req DC718 | Contact Factory |
Companion Boards
| Part Number | Description | Price | Documentation |
|---|---|---|---|
| DC718C | USB Data Acquisition Controller, for PScope Evaluation Kits (<135Mbps) | $300.00 |