AD9913BCPZ Analog Devices Inc, AD9913BCPZ Datasheet - Page 21

• Manufacturer Part Number: AD9913BCPZ
• Description: IC DDS 10BIT DAC 250MSPS 32LFCSP
• Manufacturer: Analog Devices Inc

Specifications of AD9913BCPZ

• Resolution (bits): 10 b
• Master Fclk: 250MHz
• Tuning Word Width (bits): 32 b
• Voltage - Supply: 1.8 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 32-LFCSP
• Ic Function: Direct Digital Synthesizer
• Supply Voltage Range: 1.7V To 1.9V
• Operating Temperature Range: -40°C To +85°C
• Digital Ic Case Style: LFCSP
• No. Of Pins: 32
• Msl: MSL 3 - 168 Hours
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: AD9913/PCBZ - BOARD EVAL FOR AD9913
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

POWER-DOWN FEATURES
The AD9913 supports an externally controlled power-down
feature as well as software programmable power-down bits
consistent with other Analog Devices, Inc. DDS products.
The external PWR_DWN_CTL pin determines the power-
down scheme. A low on this pin allows the user to power down
DAC, PLL, input clock circuitry, and the digital section of the
chip individually via the unique control bits, CFR1 [6:4]. In this
mode, CFR1 [7] is inactive.
When the PWR_DWN_CTL is set, CFR1 [6:4] lose their
meaning. At the same time, the AD9913 provides two different
power-down modes based on the value of CFR1 [7]: a fast
recovery power-down mode in which only the digital logic and
the DAC digital logic are powered down, and a full power-down
mode in which all functions are powered down. A significant
amount of time is required to recover from power-down mode.
Table 11 indicates the logic level for each power-down bit that
drives out of the AD9913 core logic to the analog section and
the digital clock generation section of the chip for the external
power-down operation.
Rev. A | Page 21 of 32
Table 8. Power-Down Controls
Control
PWR_DWN_CTL = 0
CFR1 [7] = don’t
care
PWRDWNCTL = 1
CFR1 [7] = 0
PWRDWNCTL = 1
CFR1 [7] = 1
Mode Active
Software
Control
External
Control,
Fast recovery
power-down
mode
External
Control,
Full power-
down mode
Description
Digital power-down = CFR1 [6]
DAC power-down = CFR1 [5]
Input clock power-down =
CFR1 [4]
N/A
N/A
AD9913