参数资料
型号: DAC34SH84EVM
厂商: Texas Instruments
文件页数: 6/29页
文件大小: 0K
描述: EVAL MODULE FOR DAC34SH84
标准包装: 1
DAC 的数量: 4
位数: 16
采样率(每秒): 1.5G
数据接口: LVDS
设置时间: 10ns
DAC 型: 电流
工作温度: -40°C ~ 85°C
已供物品:
已用 IC / 零件: *
其它名称: 296-30857
DAC34SH84EVM-ND
Software Control
2.2.1.3
PLL Settings
Figure 3. PLL Configuration
Follow the steps below to configure the PLL.
1. Enable PLL
2. Uncheck PLL reset and PLL sleep
3. Set M and N ratio such that F DAC = (M)/(N) x Fref
4. For the DAC3482, DAC3484, and DAC34H84: Set the prescaler such that the F DAC x prescaler is within
3.3GHz and 4GHz.
5. For the DAC34SH84, Set the prescaler such that the F DAC x prescaler is within 2.7GHz and 3.3GHz.
6. Set VCO Bias Tune to “1”
7. Charge Pump setting
(a) If stability (P x M) is less than 120, then set to “Single”.
(b) If stability (P x M) is greater than 120, then set to “Double” or install external loop filter
8. Adjust the Freq. Tune ( coarse tune ) accordingly. For additional information, see the relevant DAC348x
data sheet.
6
DAC348x EVM
Copyright ? 2012, Texas Instruments Incorporated
SLAU432 – February 2012
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