AD9773 is a 12-bit, 160 MSPS, 2×/4×/8× interpolating dual TxDAC D/A converter. It features selectable 2×/4×/8× interpolating filter, programmable channel gain and offset adjustment, fS/2, fS/4, fS/8 digital quadrature modulation capability, direct IF transmission mode, support for 70 MHz+ IFs, and enables image rejection architecture. The device also features a compatible SPI port with excellent ac performance SFDR −69 dBc @ 2 MHz to 35 MHz, WCDMA ACPR −69 dB @ IF = 19.2 MHz, internal PLL clock multiplier, selectable internal clock divider, versatile clock input, differential/single-ended sine wave or TTL/CMOS/LVPECL compatible versatile input data interface, Twos complement/straight binary data coding, dual-port or single-port interleaved input data, and single 3.3 V supply operation.
The AD9773 is a 12‑bit, 160‑MSPS dual‑channel TxDAC+ device from Analog Devices. It offers selectable 2×, 4×, and 8× interpolating filters, programmable channel gain and offset, and supports digital quadrature modulation modes for direct IF transmission.
The datasheet provides full specifications, pin descriptions, functional block diagrams, and evaluation board information, allowing designers to integrate the converter into communications, broadband wireless, and instrumentation applications.
| Resolution | 12 bits |
|---|---|
| Maximum DAC Output Update Rate | 400 MSPS |
| Typical Power Dissipation | 1.2 W @ 3.3 V |
| Supply Voltage Range | 3.1 V to 3.5 V |
| Full‑Scale Output Current | 20 mA |
| Spurious‑Free Dynamic Range (SFDR) | -69 dBc @ 2 MHz to 35 MHz |
| Selectable Interpolation Filters | 2×, 4×, 8× |
The AD9773 can update its DAC output at up to 400 MSPS.
Typical power dissipation is 1.2 W when powered from a 3.3 V supply.
The device provides selectable 2×, 4×, and 8× interpolation filters.
It operates from a single supply voltage between 3.1 V and 3.5 V.