AD9858BSV

The AD9858BSV is a type of direct digital synthesizer (DDS) featuring a 10-bit DAC operating reach 1GSPS. The AD9 858BSV utilities advanced DDS technology, combined with an internal high speed, high performance D/A converter to form a digitally programmable, complete high frequency synthesizer can generate a frequency-agile analog output sine wave at up to 400+ MHz. The AD9858BSV is designed to offer fast frequency hopping and fine tuning resolution (32-bit frequency tuning word). The frequency tuning and control words are loaded into the AD9858BSV through par allel (8-bit) or serial loading formats. The AD9858BSV includes an integrated charge pump (CP) and phase frequency detector (PFD) for synthesis applications demanding the integration of a high speed DDS along with phase-locked lo op (PLL) functions.

Features of the AD9858BSV are:(1)1 GSPS internal clock speed,up to 2 GHz input clock (selectable divide-by-2);(2)int egrated 10-bit D/A converter;(3)phase noise < 145 dBc/Hz @ 1 kHz offset,output frequency = 100 MHz (DAC output);(4)32-bit programmable frequency register;(5)simplified 8-bit parallel and SPI? serial control interface;(6)automatic frequency sweeping capability;(7)power dissipation 2 W typical;(8)integrated programmable charge pump and pha se,frequency detector with fast lock circuit.

The absolute maximum ratings and electrical specifications of the AD9858BSV can be summarized as:(1):AVDD is 4 V;(2):DVDD is 4 V;(3):CPVDD is 6 V;(4):digital input voltage is0.7 V to +VDD;(5):digital output current is 5 mA(6):stora ge temperature is 65°C to +150°C;(7)operating Temperature is40°C to +85°C.electrical specifications:(1):re ference clock frequency range (divider off) is 10 MHz min and 1000 MHz max;(2):input capacitance is 3 pF when the temperature is 25°C;(3):differential nonlinearity is 0.5 LSB typ and 1LSB max;(4):output impedance is 100k typ;(5):phase detector frequency is 150MHz max.etc.