PRELIMINARY TECHNICAL DATA

AD9910

Rev. PrD| Page 3 of 13

GENERAL DESCRIPTION

The AD9910 is a direct digital synthesizer (DDS) featuring an

integrated 14-bit DAC and supporting sample rates up to 1

GSPS. The AD9910 employs an advanced, proprietary DDS

technology that provides a significant reduction in power con-

sumption without sacrificing performance. The DDS/DAC

combination forms a digitally programmable, high frequency,

analog output synthesizer capable of generating a frequency-

agile sinusoidal waveform at frequencies up to 400 MHz. The

user has access to the three signal control parameters used to

control the DDS: frequency, phase and amplitude. The DDS

provides fast frequency hopping and frequency tuning resolu-

tion with its 32-bit accumulator. With a 1GSPS sample rate, the

tuning resolution is ~0.23Hz. The DDS also enables fast phase

and amplitude switching capability.

The AD9910 is controlled by programming its internal control

registers via a serial I/O port. The AD9910 includes an inte-

grated static RAM to support various combinations of fre-

quency, phase and/or amplitude modulation. The AD9910 also

supports a user defined, digitally controlled, linear sweep mode

of operation. In this mode frequency, phase or amplitude can

be varied linearly over time. For more advanced modulation

functions, a high speed parallel data input port is included to

enable direct frequency, phase, amplitude, or polar modulation.

The AD9910 is specified to operate over the extended industrial

temperature range (see Absolute Max Ratings table).

Figure 2: AD9910 detailed block diagram