The LTM9002 dual-channel IF/ baseband receiver combines 14-Bit, 125Msps ADCs, Fixed-Gain Amplifiers and Antialias Filters in a Single 11.25mm × 15mm μModule Package
This document is a technical feature article from Linear Technology Magazine (June 2008) detailing the LTM9002 dual-channel receiver. The device combines 14-bit, 125Msps ADCs with fixed-gain amplifiers and antialias filters in a single piModule package to simplify multichannel IF-sampling or I/Q baseband communications designs.
The article highlights key performance metrics such as 66dB Signal-to-Noise Ratio (SNR) and 74dB Spurious Free Dynamic Range (SFDR). It emphasizes the component's ability to achieve 90dB channel isolation at 140MHz input frequency while requiring no external components, significantly reducing PCB area compared to discrete implementations.
| ADC Resolution | 14-bit |
|---|---|
| Sampling Rate | 125 Msps |
| Signal to Noise Ratio (SNR) | 66 dB |
| Spurious Free Dynamic Range (SFDR) | 74 dB |
| Channel Isolation | 90 dB @ 140 MHz |
| Input Impedance | 50 Ohm differential |
| Package Dimensions | 11.25mm x 15mm |
The internal antialias filters limit the input frequency to less than 170MHz.
No, it does not require external supply bypass capacitors because they are internally bypassed.
The overall gain is typically 26dB on the default span setting.