參數(shù)資料
型號: AD9778BSVZ
廠商: Analog Devices Inc
文件頁數(shù): 22/56頁
文件大小: 0K
描述: IC DAC 14BIT DUAL 1GSPS 100TQFP
產品培訓模塊: DAC Architectures
標準包裝: 1
位數(shù): 14
數(shù)據(jù)接口: 并聯(lián)
轉換器數(shù)目: 2
電壓電源: 模擬和數(shù)字
功率耗散(最大): 300mW
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 100-TQFP 裸露焊盤
供應商設備封裝: 100-TQFP-EP(14x14)
包裝: 托盤
輸出數(shù)目和類型: 4 電流,單極;4 電流,雙極
采樣率(每秒): 1G
AD9776/AD9778/AD9779
Rev. A | Page 29 of 56
Address
Register Name
Reg. No.
Bits
Description
Function
Default
Sync Control Register
06
7:4
Sync input delay
section for details on using these registers
to synchronize multiple DACs
0
06
3:0
Input sync pulse timing error
tolerance
0
07
7
Sync receiver enable
0
07
6
Sync driver enable
0
07
5
Sync triggering edge
0
07
4:0
SYNC_I to input data sampling
clock offset
0
PLL Control
08
7:2
PLL band select
VCO frequency range vs. PLL band select
value (see Table 18)
111001
08
1:0
VCO AGC gain control
Lower number (low gain) is generally better
for performance
11
09
7
PLL enable
0: PLL off, DAC rate clock supplied by
outside source
0
1: PLL on, DAC rate clock synthesized
internally from external reference clock via
PLL clock multiplier
09
6:5
PLL VCO divide ratio
FVCO/fDAC
00 × 1
01 × 2
10 × 4
11 × 8
09
4:3
PLL loop divide ratio
fDAC/fREF
00 × 2
01 × 4
10 × 8
11 × 16
09
2:0
PLL bias setting
Always set to 010
010
0A
7:5
PLL control voltage range
000 to 111, proportional to voltage at PLL
loop filter output, readback only
Misc Control
0A
4:0
PLL loop bandwidth adjustment
details
I DAC Control Register
0B
7:0
I DAC gain adjustment
(7:0) LSB slice of 10-bit gain setting word
for I DAC
11111001
0C
7
I DAC sleep
0: I DAC on
0
1: I DAC off
0C
6
I DAC power-down
0: I DAC on
0
1: I DAC off
0C
1:0
I DAC gain adjustment
(9:8) MSB slice of 10-bit gain setting word
for I DAC
01
0D
7:0
Aux DAC1 gain adjustment
(7:0) LSB slice of 10-bit gain setting word for
Aux DAC1
00000000
0E
7
Aux DAC1 sign
0: positive
1: negative
0E
6
Aux DAC1 current direction
0: source
0
1: sink
0E
5
Aux DAC1 power-down
0: Aux DAC1 on
0
1: Aux DAC1 off
Aux DAC1 Control
Register
0E
1:0
Aux DAC1 gain adjustment
(9:8) MSB slice of 10-bit gain setting word
for Aux DAC1
00
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