參數(shù)資料
型號： DS1884AT+T
廠商： Maxim Integrated Products
文件頁數(shù)： 17/92頁
文件大?。?/td> 0K
描述： IC SFP PON ONU CTRLR 24TQFN
標(biāo)準(zhǔn)包裝： 2,500
系列： *
DS1884
SFP and PON ONU Controller
with Digital LDD Interface
24
Maxim Integrated
Figure 7. Low-Voltage Hysteresis Example
Delta-Sigma Output and Reference
One delta-sigma output (DAC) is provided. This provides
a 9-bit resolution output. The maximum voltage output is
set by the input REFIN. An inexpensive shunt reference is
recommended to generate the voltage applied to REFIN,
as shown in Figure 8. The output includes the ability to
compensate the APD bias for temperature as given by
the following formula:
DAC_INT = TINDEX[6:0] + DAC OFFSET
If INV_DAC = 0, then DAC[9:0] = DAC_INT/DACFS x
VREFIN.
If INV_DAC = 1, then DAC[9:0] = [3FF - (DAC_INT/
DACFS)] x VREFIN.
where:
1) INV_DAC is at A2h Table 02h, Register 8Dh, bit 7.
3) DAC OFFSET is an 8-bit value, representing the 8
MSBs of a 10-bit value. The two LSBs are 0.
4) DACFS (A2h Table 02h, Register 88h) is an 8-bit
value, representing the 8 MSBs of a 10-bit value. The
two LSBs are 0.
5) DAC is a 10-bit value.
6) The DAC[9:0] is clamped at DACFS.
7) DAC_INT is an internal signal.
Figure 8. Recommended Shunt Reference and RC Filter for
DAC Output
VPOA
VPOD
VCC
SEE
RECALLED VALUE
PRECHARGED
TO 0
PRECHARGED
TO 0
PRECHARGED TO 0
SEE RECALL
DS1884
REFIN
2.5V
0.1F
0201
ZTL431A
SOT23
1F
0402
CONNECT TO
CONTROL INPUT
ON DC-DC
39.2k
0201
DAC
68.1k
0201
1k
0201
20k
0201
VCC
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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
DS1886_V1 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:SFP and PON ONU Controller with Digital LDD Interface
DS1886T+ 功能描述:接口 - 專用 PON ONU/SFP CTRLR W/DIG LDD INT RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:BGA-59
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