Introduces the features and characteristics of LTC2208 high performance 16-bit 130Msps ADC for high sensitivity receivers
The document describes the LTC2208 Analog-to-Digital Converter (ADC), highlighting its suitability for wireless receiver design where minimizing noise is critical. Key features discussed include an internal transparent dither circuit to address nonlinearity errors and a digital output randomizer to minimize digital feedback from the data bus.
The note also covers the device's wide digitizing bandwidth, capable of sampling IF frequencies up to 250MHz with an analog input bandwidth of 700MHz. Additional topics include programmable gain amplifier (PGA) front-end options for varying input drive levels and general benefits such as low power dissipation and a compact QFN package.
| Resolution | 16-bit |
|---|---|
| Sampling Rate | 130Msps |
| Analog Input Bandwidth | 700MHz |
| Max IF Frequency | 250MHz |
| Spurious Free Dynamic Range (SFDR) | 100dBc |
| Supply Voltage | 3.3V |
| Power Dissipation | 1250mW |
The LTC2208 includes an internal dither circuit to address ADC nonlinearity errors and a digital output randomizer that minimizes digital feedback from the data output bus.
The programmable gain amplifier allows selection of either a 1.5Vp-p or a 2.25Vp-p input range.
The fastest speed grade in the LTC2208 family operates at 130Msps.