參數(shù)資料
型號: AD9910BSVZ-REEL
廠商: ANALOG DEVICES INC
元件分類: DAC
英文描述: 1 GSPS, 14-Bit, 3.3 V CMOS Direct Digital Synthesizer
中文描述: SERIAL, PARALLEL, WORD INPUT LOADING, 14-BIT DAC, PDSO100
封裝: ROHS COMPLIANT, MS-026AED-HD, TQFP-100
文件頁數(shù): 42/60頁
文件大?。?/td> 764K
代理商: AD9910BSVZ-REEL
AD9910
Software control requires that the EXT_PWR_DWN pin be
forced to a Logic 0 state. In this case, setting the desired power-
down bits (via the serial I/O port) powers down the associated
functional block, whereas clearing the bits restores the function.
Rev. 0 | Page 42 of 60
Alternatively, all four functions can be simultaneously powered
down via external hardware control through the EXT_PWR_DWN
pin. When this pin is forced to Logic 1, all four circuit blocks are
powered down regardless of the state of the power-down bits.
That is, the independent power-down bits in CFR1 are ignored
and overridden when EXT_PWR_DWN is Logic 1.
Based on the state of the external power-down control bit, the
EXT_PWR_DWN pin produces either a full power-down or a
fast recovery power-down. The fast recovery power-down mode
maintains power to the DAC bias circuitry and the PLL, VCO,
and input clock circuitry. Although the fast recovery power-
down does not conserve as much power as the full power-down,
it allows the device to awaken very quickly from the power-
down state.
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