参数资料
型号: DS1884AT+T
厂商: Maxim Integrated Products
文件页数: 15/92页
文件大小: 0K
描述: IC SFP PON ONU CTRLR 24TQFN
标准包装: 2,500
系列: *
DS1884
SFP and PON ONU Controller
with Digital LDD Interface
22
Maxim Integrated
PIN Mode
The PIN mode is intended for systems with a linear rela-
tionship between the RSSI input and desired ADC result.
The ADC result transitions between the fine and coarse
ranges with hysteresis, as shown in Figure 6.
In PIN mode, the thresholds between coarse and fine
mode are a function of the number of right-shifts being
used. With the use of right-shifting, the fine mode full scale
is programmed to (1/2nth) of the coarse mode full scale.
The DS1884 now auto ranges to choose the range that
gives the best resolution for the measurement. Table 3
shows the threshold values for each possible number of
right-shifts.
Figure 5. RSSI in APD Mode
Figure 6. RSSI in PIN Mode
CROSSOVER POINT
RSSI RESULT
APD MODE
IDEAL RESPONSE
FINE FULL-SCALE
RESPONSE
COARSE
FULL-SCALE
RESPONSE
RSSI INPUT
PIN MODE
RSSI RESULT
FINE
FULL-SCALE
RESPONSE
COARSE
FULL-SCALE
RESPONSE
FINE
RIGHT-SHIFT
= 3
RSSI INPUT
FINE
COARSE
HYSTERESIS
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DS1884T+ 功能描述:ADC / DAC多通道 SFP+ Controller w/ Digi LDD Interface RoHS:否 制造商:Texas Instruments 转换速率: 分辨率:8 bit 接口类型:SPI 电压参考: 电源电压-最大:3.6 V 电源电压-最小:2 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-40
DS1884T+T 功能描述:ADC / DAC多通道 SFP+ Controller w/ Digi LDD Interface RoHS:否 制造商:Texas Instruments 转换速率: 分辨率:8 bit 接口类型:SPI 电压参考: 电源电压-最大:3.6 V 电源电压-最小:2 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-40
DS1886 制造商:未知厂家 制造商全称:未知厂家 功能描述:带有数字LDD接口的SFP和PON ONU控制器
DS1886_V1 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:SFP and PON ONU Controller with Digital LDD Interface
DS1886T+ 功能描述:接口 - 专用 PON ONU/SFP CTRLR W/DIG LDD INT RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59