DocumentationDatasheet
Reliability Data
Product Selector Card
Software and Simulation
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Features
- Sample Rate: 105Msps/80Msps
- 68dB SNR up to 140MHz Input
- 80dB SFDR up to 170MHz Input
- 775MHz Full Power Bandwidth S/H
- Single 3.3V Supply
- Low Power Dissipation: 475mW/366mW
- Selectable Input Ranges: ±0.5V or ±1V
- No Missing Codes
- Optional Clock Duty Cycle Stabilizer
- Shutdown and Nap Modes
- Data Ready Output Clock
- Pin Compatible Family
135Msps: LTC2224 (12-Bit), LTC2234 (10-Bit)
105Msps: LTC2222 (12-Bit), LTC2232 (10-Bit)
80Msps: LTC2223 (12-Bit), LTC2233 (10-Bit) - 48-Pin QFN Package
Typical Application
Description
The LTC2222 and LTC2223 are 105Msps/80Msps, sampling 12-bit A/D converters designed for digitizing high frequency, wide dynamic range signals. The LTC2222/LTC2223 are perfect for demanding communications applications with AC performance that includes 68dB SNR and 80dB spurious free dynamic range for signals up to 170MHz. Ultralow jitter of 0.15psRMS allows undersampling of IF frequencies with excellent noise performance.
DC specs include ±0.3LSB INL (typ), ±0.2LSB DNL (typ) and no missing codes over temperature. The transition noise is a low 0.5LSBRMS.
A separate output power supply allows the outputs to drive 0.5V to 3.6V logic.
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.
7x7 QFN-48
Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) |
Price (1k)* |
|---|---|---|---|---|---|
| LTC2222CUK#PBF | QFN | 48 | C | $41.38 | $29.92 |
| LTC2222CUK#TRPBF | QFN | 48 | C | $30.02 | |
| LTC2222CUK-11#PBF | QFN | 48 | C | $20.71 | $14.50 |
| LTC2222CUK-11#TRPBF | QFN | 48 | C | $14.60 | |
| LTC2222IUK#PBF | QFN | 48 | I | $51.73 | $37.40 |
| LTC2222IUK#TRPBF | QFN | 48 | I | $37.50 | |
| LTC2222IUK-11#PBF | QFN | 48 | I | $24.86 | $17.40 |
| LTC2222IUK-11#TRPBF | QFN | 48 | I | $17.50 | |
| LTC2222CUK | QFN | 48 | C | $82.76 | $59.84 |
| LTC2222IUK | QFN | 48 | I | $103.46 | $74.80 |
| LTC2222CUK#TR | QFN | 48 | C | $60.04 | |
| LTC2222IUK#TR | QFN | 48 | I | $75.00 | |
| LTC2222CUK-11 | QFN | 48 | C | $41.42 | $29.00 |
| LTC2222CUK-11#TR | QFN | 48 | C | $29.20 | |
| LTC2222IUK-11 | QFN | 48 | I | $49.72 | $34.80 |
| LTC2222IUK-11#TR | QFN | 48 | I | $35.00 |
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 |
|---|---|---|---|
| DC751A-A | LTC2222IUK | High Speed ADC, VDD = +3.3V, 105Msps, 12-Bit 1MHz < Ain < 100MHz (Requires DC718) | $200.00 | |
| DC751A-E | LTC2222IUK | High Speed ADC, VDD = +3.3V, 105Msps, 12-Bit 100MHz < Ain < 250MHz (Requires DC718) | $200.00 |
Companion Boards
| Part Number | Description | Price | Documentation |
|---|---|---|---|
| DC718C | USB Data Acquisition Controller, for PScope Evaluation Kits (<135Mbps) | $300.00 |