The AD9876 is a single-supply broadband modem mixed-signal front end (MxFE) IC. The device contains a transmit path interpolation filter and DAC and a receive path PGA, LPF, and ADC supporting a variety of broadband modem applications. Also on-chip is a PLL clock multiplier that provides all required clocks from a single crystal or clock input. The AD9876 provides 12-bit converter performance on both the Tx and Rx path. The TxDAC+ uses a selectable digital 2× or 4× interpolation low-pass or band-pass filter to further oversample transmit data and reduce the complexity of analog reconstruction filtering.
The AD9876 is a single-supply broadband modem mixed-signal front end (MxFE) IC designed for applications such as powerline networking, home phone networking, xDSL, and broadband wireless. The device integrates a transmit path with an interpolation filter and DAC, and a receive path featuring a programmable gain amplifier (PGA), low-pass filter (LPF), and ADC.
| Supply Voltage | 3.3 V CMOS |
|---|---|
| Converter Resolution | 12-bit |
| Input Data Rate | 64 MSPS |
| DAC Output Update Rate | 128 MSPS |
| Transmit Bandwidth | 26 MHz |
| Package Type | 48-Lead LQFP |
| Operating Temperature Range | -40 °C to +85 °C |
It is designed for broadband modem applications including powerline networking, home phone networking, xDSL, and broadband wireless.
Yes, it includes a PLL clock multiplier that provides all required clocks from a single crystal or clock input.
The maximum programmable gain is 36 dB when using the 12 MHz filter, and 30 dB with the 26 MHz filter.