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參數(shù)資料
| 型號： | LTC1695 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | SMBus/I 2 C Fan Speed Controller in SOT-23(SMBus/I 2 C 風(fēng)扇速度控制器（SOT-23封裝）) |
| 中文描述： | 的SMBus /的I 2 C風(fēng)扇調(diào)速器采用SOT - 23（的SMBus /的I 2 C風(fēng)扇速度控制器（采用SOT - 23封裝）） |
| 文件頁數(shù)： | 10/20頁 |
| 文件大?。?/td> | 204K |
| 代理商： | LTC1695 |
LTC1695
10
DEFINITIONS
Resolution:
The number of DAC output states (2
N
) that
divide the full-scale range. The resolution does not imply
linearity.
Full-Scale Voltage (V
FS
):
The regulator output voltage
(V
OUT
) if all DAC bits are set to ones (code 63).
Voltage Offset Error (V
OS
):
The regulator output voltage
if all DAC bits are set to zeros. The LDO amplifier can have
a true negative offset, but due to the LTC1695’s single
supply operation, V
OUT
cannot go below ground. If the
offset is negative, V
OUT
will remain near 0V resulting in the
transfer curve shown in Figure 1.
Table 1. Nominal V
LSB
and V
FS
values
V
CC
4.5V
5.0V
5.5V
V
LSB
70.3mV
78.1mV
85.9mV
V
FS
4.430V
4.922V
5.414V
INL:
Integral nonlinearity is the maximum deviation from
a straight line passing through the endpoints of the DAC
transfer curve. Due to the LTC1695’s single supply opera-
tion and the fact that V
OUT
cannot go below ground,
linearity is measured between full scale and the first code
(code 01) that guarantees a positive output. The INL error
at a given input code is calculated as follows:
INL = (V
OUT
– V
IDEAL
))/V
LSB
V
IDEAL
= (Code V
LSB
) + V
OS
V
OUT
= The output voltage of the DAC
measured at the given input code
DNL:
Differential nonlinearity is the difference between the
measured change and the ideal 1LSB change between any
two adjacent codes. The DNL error between any two codes
is calculated as below:
DNL = (
V
OUT
– V
LSB
)/V
LSB
V
OUT
= The measured voltage difference
between two adjacent codes
The
V
OUT
calculation includes the V
OS
values to account
for the effect of negative offset in Figure 1. This is relevant
for code 1’s DNL.
The offset of the part is measured at the first code (code1)
that produces an output voltage 0.5LSB greater than the
previous code.
V
OS
= V
OUT
– [(Code V
FS
)/(2
N
– 1)]
Least Significant Bit (V
LSB
):
The least significant bit or the
ideal voltage difference between two successive codes.
V
LSB
= (V
FS
– V
OS
)/(2
N
– 1)
Figure 1. Effect of Negative Offset
OUTPUT
VOLTAGE
DAC CODE
0V
NEGATIVE
OFFSET
1695 F01
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC1695CS5#PBF | 制造商:Linear Technology 功能描述:DP-Other, CUT TAPE SMBus Fan Speed Controller |
| LTC1695CS5#TR | 功能描述:IC CTRLR FAN SPD SMBUS SOT23-5 RoHS:否 類別:集成電路 (IC) >> PMIC - 電機和風(fēng)扇控制器，驅(qū)動器 系列:- 產(chǎn)品變化通告:ATA683(3,4)PLQW Obsolescence 09/Aug/2012 標準包裝:1 系列:- 應(yīng)用:DC 電機控制器，無刷（BLDC），3 相 評估套件:可供 輸出數(shù):1 電流 - 輸出:100mA 電壓 - 負載:5.25 V ~ 20 V 電源電壓:5.25 V ~ 20 V 工作溫度:-40°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:48-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:48-VQFN（7x7） 包裝:剪切帶 (CT) 其它名稱:ATA6833-PLQWCT |
| LTC1695CS5#TRM | 功能描述:IC CTRLR FAN SPD SMBUS SOT23-5 RoHS:否 類別:集成電路 (IC) >> PMIC - 電機和風(fēng)扇控制器，驅(qū)動器 系列:- 產(chǎn)品變化通告:ATA683(3,4)PLQW Obsolescence 09/Aug/2012 標準包裝:1 系列:- 應(yīng)用:DC 電機控制器，無刷（BLDC），3 相 評估套件:可供 輸出數(shù):1 電流 - 輸出:100mA 電壓 - 負載:5.25 V ~ 20 V 電源電壓:5.25 V ~ 20 V 工作溫度:-40°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:48-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:48-VQFN（7x7） 包裝:剪切帶 (CT) 其它名稱:ATA6833-PLQWCT |
| LTC1695CS5#TRMPBF | 功能描述:IC CTRLR FAN SPD SMBUS SOT23-5 RoHS:是 類別:集成電路 (IC) >> PMIC - 電機和風(fēng)扇控制器，驅(qū)動器 系列:- 產(chǎn)品變化通告:ATA683(3,4)PLQW Obsolescence 09/Aug/2012 標準包裝:1 系列:- 應(yīng)用:DC 電機控制器，無刷（BLDC），3 相 評估套件:可供 輸出數(shù):1 電流 - 輸出:100mA 電壓 - 負載:5.25 V ~ 20 V 電源電壓:5.25 V ~ 20 V 工作溫度:-40°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:48-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:48-VQFN（7x7） 包裝:剪切帶 (CT) 其它名稱:ATA6833-PLQWCT |
| LTC1695CS5#TRPBF | 功能描述:IC CTRLR FAN SPD SMBUS SOT23-5 RoHS:是 類別:集成電路 (IC) >> PMIC - 電機和風(fēng)扇控制器，驅(qū)動器 系列:- 產(chǎn)品變化通告:ATA683(3,4)PLQW Obsolescence 09/Aug/2012 標準包裝:1 系列:- 應(yīng)用:DC 電機控制器，無刷（BLDC），3 相 評估套件:可供 輸出數(shù):1 電流 - 輸出:100mA 電壓 - 負載:5.25 V ~ 20 V 電源電壓:5.25 V ~ 20 V 工作溫度:-40°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:48-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:48-VQFN（7x7） 包裝:剪切帶 (CT) 其它名稱:ATA6833-PLQWCT |
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