AD9726 Analog Devices, AD9726 Datasheet - Page 16

• Manufacturer Part Number: AD9726
• Manufacturer: Analog Devices

Specifications of AD9726

• Resolution (bits): 16bit
• Dac Update Rate: 400MSPS
• Dac Settling Time: n/a
• Max Pos Supply (v): +3.47V
• Single-supply: No
• Dac Type: Current Out
• Dac Input Format: LVDS,Par

AD9726
Addr
0x10
0x11
0x15
0x16
1
2
3
4
5
6
SWRESET also resets itself. SMEM contents are unaffected by SWRESET; however, CALMEM reports an uncalibrated state.
EXTREF is optional because the internal reference circuit is designed to be overdriven by an external source.
The self-calibration clock is also used for the memory transfer cycle; therefore, the CALCLK value affects the MEMXFER process time.
Register Bits 3:0 must all be 0 to assert SELFCAL. The time required for the self-calibration cycle is ~100 ms at 100 MHz with CALCLK = 0.
Register Bits 3:0 must all be 0 to assert MEMXFER. The time required for the memory transfer cycle is ~15 ms at 100 MHz with CALCLK = 0.
The UNCAL bit remains asserted after the cycle completes (SMEM contents held at default values) until the bit is cleared by the user.
Name
MEMADR
MEMDAT
SYNCOUT
BYPASS
SYNCEXT
SYNCIN
Bits
[7:0]
[5:0]
[1:0]
6
5
[4:3]
I/O
I
I/O
O
I
I
I
Default
00000000
000000
00
0
0
00
Description
8-bit memory address value for read/write operations.
6-bit memory data value for read/write operations.
2-bit output value indicates current sync quadrant.
1: bypasses data synchronization circuitry. Data is sampled using the DAC clock (CLK±)
1: enables sync external mode; disable auto quadrant select.
2-bit input value is used to specify the sync quadrant.
Rev. B | Page 16 of 24