AD9915屬于開發(fā)板套件編程器的評(píng)估演示板及套件。由亞德諾半導(dǎo)體技術(shù)有限公司制造生產(chǎn)的AD9915評(píng)估和演示板及套件該系列產(chǎn)品提供了一種方便的方法，在經(jīng)過驗(yàn)證的實(shí)施環(huán)境中評(píng)估某些重點(diǎn)器件的性能或特性。評(píng)估方法通常有完善的文檔說明，并且視乎具體情況由評(píng)估軟件提供支持。產(chǎn)品通常由印刷電路板組成，板上已裝有重點(diǎn)器件以及必要或有用的支持元器件，另外也可能包括其他組件，例如電纜或電源。對(duì)于數(shù)量特別多或類別獨(dú)特的器件類別(如 ADC、DAC 和開關(guān)模式電源)，評(píng)估平臺(tái)可組合為一個(gè)單獨(dú)的產(chǎn)品系列。

GENERAL DESCRIPTION

The AD9915 is a direct digital synthesizer (DDS) featuring a 12-bit DAC. The AD9915 uses advanced DDS technology, coupled with an internal high speed, high performance DAC to form a digitally programmable, complete high frequency synthesizer capable of generating a frequency agile analog output sinusoidal waveform at up to 1.0 GHz. The AD9915 enables fast frequency hopping and fine tuning resolution (64-bit capable using programmable modulus mode). The AD9915 also offers fast phase and amplitude hopping capability.

FEATURES

2.5 GSPS internal clock speed

Integrated 12-bit DAC

Frequency tuning resolution to 135 pHz

16-bit phase tuning resolution

12-bit amplitude scaling

Programmable modulus

Automatic linear and nonlinear frequency sweeping

capability

32-bit parallel datapath interface

8 frequency/phase offset profiles

Phase noise: ?128 dBc/Hz (1 kHz offset at 978 MHz)

Wideband SFDR < ?57 dBc

Serial or parallel input/output control

1.8 V/3.3 V power supplies

Software and hardware controlled power-down

88-lead LFCSP package

PLL REF CLK multiplier

Phase modulation capability

Amplitude modulation capability

Multichip synchronization

APPLICATIONS

Agile LO frequency synthesis

Programmable clock generator

FM chirp source for radar and scanning systems

Test and measurement equipment

Acousto-optic device drivers

Polar modulator

Fast frequency hopping