參數(shù)資料
型號(hào)： DS1884AT+
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 27/92頁(yè)
文件大?。?/td> 0K
描述： IC SFP PON ONU CTRLR 24TQFN
標(biāo)準(zhǔn)包裝： 500
系列： *
DS1884
SFP and PON ONU Controller
with Digital LDD Interface
33
Maxim Integrated
The offsets are also temperature indexed. Figure 15 illus-
trates how the offsets would affect the final output as the
temperature varies.
Table 12 shows the temperature resolution for the offsets.
MODULATION Value
Figure 16 shows how to calculate the MODULATION value
that is recalled from the LUT and sent to the MAX3710.
BIAS Value
Figure 17 shows how to calculate the BIAS value that is
recalled from the LUT and sent to the MAX3710.
Figure 15. Offset LUT
Figure 16. MODULATION LUT (Open Loop and APC Mode)
Figure 17. BIAS LUT (Open Loop)
Table 12. Temperature Resolution for Offsets
ROW
BYTE 0
BYTE 1
BYTE 2
BYTE 3
BYTE 4
BYTE 5
BYTE 6
BYTE 7
F8h
-40NC
-8NC
+8NC
+24NC
+40NC
+56NC
+72NC
+88NC
0
255
511
VALUE
DETERMINED
BY
LUTs
WITH
CORRESPONDING
OFFSET
LUTs
767
1023
EACH OFFSET REGISTER CAN BE INDEPENDENTLY SET BETWEEN
0 AND 1020. 1020 = 4 x FFh. THIS EXAMPLE ILLUSTRATES POSITIVE
AND NEGATVE TEMPCO.
LUT
BITS
7:0
F8h
LUT
BITS
7:0
F9h
LUT
BITS
7:0
FAh
LUT
BITS
7:0
FBh
LUT
BITS
7:0
FCh
LUT
BITS
7:0
FDh
LUT
BITS
7:0
FEh
LUT
BITS
7:0
FFh
0
255
511
-40°C
-8°C
+8°C
+24°C +40°C
OFFSET LUTs [8 REGISTERS]
+56°C +72°C +88°C +104°C
VALUE
DETERMINED
BY
LUTs
WITH
CORRESPONDING
OFFSET
LUTs
767
1023
EACH OFFSET REGISTER CAN BE INDEPENDENTLY
SET BETWEEN 0 AND 1020. 1020 = 4 x FFh. THIS
EXAMPLE ILLUSTRATES POSITIVE TEMPCO.
LUT
BITS
7:0
F8h
LUT
BITS
7:0
F9h
LUT
BITS
7:0
FAh
LUT
BITS
7:0
FBh
LUT
BITS
7:0
FCh
LUT
BITS
7:0
FDh
LUT
BITS
7:0
FEh
LUT
BITS
7:0
FFh
-40°C
-8°C
+8°C
+24°C +40°C +56°C +72°C +88°C +104°C
9
MOD OFFSET[9:2]
DS1884
MODULATION VALUE
POW_LEV[1:0]
8
7
6
5
4
3
2
1
MOD[7:0]
0
7
6
5
4
3
2
MAX3710
SET_IMOD[8:0]
GAIN
POWER LEVEL (dB)
00
2
0
01
1
-3
11
0.5
-6
9
BIAS OFFSET[9:2]
THE BIAS VALUE THAT IS RECALLED FROM THE LUT AND SENT TO THE MAX3710
IS CALCULATED AS FOLLOWS:
8
7
6
5
4
3
2
1
BIAS[7:0]
0
7
6
5
4
3
2
MAX3710
SET_IBIAS[9:0]
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS1884AT+ 功能描述:ADC / DAC多通道 SFP and PON ONU Controller RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率: 分辨率:8 bit 接口類(lèi)型:SPI 電壓參考: 電源電壓-最大:3.6 V 電源電壓-最小:2 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-40
DS1884AT+T 功能描述:ADC / DAC多通道 SFP and PON ONU Controller RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率: 分辨率:8 bit 接口類(lèi)型:SPI 電壓參考: 電源電壓-最大:3.6 V 電源電壓-最小:2 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-40
DS1884T+ 功能描述:ADC / DAC多通道 SFP+ Controller w/ Digi LDD Interface RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率: 分辨率:8 bit 接口類(lèi)型:SPI 電壓參考: 電源電壓-最大:3.6 V 電源電壓-最小:2 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體: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 轉(zhuǎn)換速率: 分辨率:8 bit 接口類(lèi)型:SPI 電壓參考: 電源電壓-最大:3.6 V 電源電壓-最小:2 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-40
DS1886 制造商:未知廠家 制造商全稱:未知廠家 功能描述:帶有數(shù)字LDD接口的SFP和PON ONU控制器
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