DocumentationDatasheet
Reliability Data
Product Selector Card
Software and Simulation
cad_symbol
Features
- Integrated Dual 10-Bit ADCs
- Sample Rate: 125Msps
- Single 3V Supply (2.85V to 3.4V)
- Low Power: 790mW
- 61.6dB SNR, 85dB SFDR
- 110dB Channel Isolation at 100MHz
- Flexible Input: 1VP-P to 2VP-P Range
- 640MHz Full Power Bandwidth S/H
- Clock Duty Cycle Stabilizer
- Shutdown and Nap Modes
- Data Ready Output Clock
- Pin Compatible Family
125Msps: LTC2283 (12-Bit), LTC2281 (10-Bit)
105Msps: LTC2282 (12-Bit), LTC2280 (10-Bit)
80Msps: LTC2294 (12-Bit), LTC2289 (10-Bit)
65Msps: LTC2293 (12-Bit), LTC2288 (10-Bit)
40Msps: LTC2292 (12-Bit), LTC2287 (10-Bit) - 64-Pin (9mm × 9mm) QFN Package
Typical Application
Description
The LTC2281 is a 10-bit 125Msps, low power dual 3V A/D converter designed for digitizing high frequency, wide dynamic range signals. The LTC2281 is perfect for demanding imaging and communications applications with AC performance that includes 61.6dB SNR and 82dB SFDR for signals at the Nyquist frequency.Typical DC specs include ±0.1LSB INL, ±0.1LSB DNL. The transition noise is a low 0.08LSBRMS.
A single 3V supply allows low power operation. A separate output supply allows the outputs to drive 0.5V to 3.6V 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. A data ready output clock (CLKOUT) can be used to latch the output data.
9x9 QFN-64
Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) |
Price (1k)* |
|---|---|---|---|---|---|
| LTC2281CUP#PBF | QFN | 64 | C | $25.71 | $18.00 |
| LTC2281CUP#TRPBF | QFN | 64 | C | $18.10 | |
| LTC2281IUP#PBF | QFN | 64 | I | $30.86 | $21.60 |
| LTC2281IUP#TRPBF | QFN | 64 | I | $21.70 | |
| LTC2281CUP | QFN | 64 | C | $51.42 | $36.00 |
| LTC2281CUP#TR | QFN | 64 | C | $36.20 | |
| LTC2281IUP | QFN | 64 | I | $61.72 | $43.20 |
| LTC2281IUP#TR | QFN | 64 | I | $43.40 |
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 |
|---|---|---|---|
| DC1098A-A | LTC2281IUP | Dual HSADC, VDD = +3V, 125Msps 10-Bit 1MHz < Ain < 70MHz, (req. DC890) | $200.00 | |
| DC1098A-D | LTC2281IUP | Dual HSADC, VDD = +3V, 125Msps 10-Bit 70MHz < Ain < 140MHz, (req. DC890) | $200.00 |
Companion Boards
| Part Number | Description | Price | Documentation |
|---|---|---|---|
| DC890B | USB Data Acquisition Controller, for PScope Evaluation Kits (up to 250Mbps, CMOS/LVDS) | $300.00 |