參數(shù)資料
型號(hào)： AMC1210
英文描述： Quad Digital Filter for 2nd-Order Delta-Sigma Modulator
中文描述： 四數(shù)字濾波器2階Δ-Σ調(diào)制器
文件頁(yè)數(shù)： 42/47頁(yè)
文件大?。?/td> 805K
代理商： AMC1210
www.ti.com
E
Settling Time ( s)
0
4
8
10
8
7
6
5
4
3
2
1
0
2
6
9
10
Sinc
1
Sinc
2
Sinc
3
ADS1203
Sincfast
Group_Delay
Order_of_Filter
OSR
f
MODULATOR
(12)
OSR
Group_Delay
Order_of_Filter
f
MODULATOR
3.2 s
10MHz
2
16
(13)
Hall Sensor Measurement
AMC1210
SBAS372A–APRIL 2006–REVISED OCTOBER 2006
APPLICATION INFORMATION (continued)
Figure 27. Effective Number of Bits vs Settling Time (ADS1203)
The user should choose a digital filter that gives the maximum ENOB for the desired settling time. If a 3.2
μ
s
settling time is assumed, the user should select a Sinc
2
filter. For any delay greater than 4
μ
s, the user should
choose a Sinc
3
filter.
The total delay can be represented by
Equation 12
:
We can then calculate what OSR is necessary to achieve a delay time of 3.2
μ
s by using
Equation 13
.
A Sinc
2
comparator filter with an OSR of 16 satisfies the settling time requirements for this example system. A
high and low comparator value can be chosen by referring to
Table 9
. For the present example, the comparator
filter is capable of a span of 256 codes (from 0 to 256). If an over-current situation is defined at ±25% of the
modulator full-scale range, the High Level Threshold level (HLT15–0) and Low Level Threshold level (LLT15–0)
should be set to a maximum value of 64 from the full-scale values, or 64 to 192. It may also be necessary to
lower this value to avoid an accidental over-current situation. If a 5% guardband is presumed, the threshold
levels should be set to 60 and 196.
The AMC1210 can be used directly with the ADS120x family of modulators to interface with Hall sensors in
order to provide magnetic field strength measurements. The ADS1208 is a 16-bit, second order, delta-sigma
modulator with Hall element biasing circuitry. By connecting the MCLK and MDATA lines of the ADS1208 to the
INx and CLKx lines, the AMC1210 needs only a system clock to provide filtered data from the modulator.
42
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相關(guān)PDF資料
PDF描述
AMC1210IRHAR Quad Digital Filter for 2nd-Order Delta-Sigma Modulator
AMC1210IRHARG4 Quad Digital Filter for 2nd-Order Delta-Sigma Modulator
AMC1210IRHAT Quad Digital Filter for 2nd-Order Delta-Sigma Modulator
AMC1210IRHATG4 Quad Digital Filter for 2nd-Order Delta-Sigma Modulator
AMC142SMA Industrial Control IC
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AMC1210EVM 功能描述:有源濾波器開(kāi)發(fā)工具 DATA CONVERTER RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 工具用于評(píng)估:MAX7408-MAX7415, MAX7418-MAX7425 截止頻率:1 Hz to 15 kHz 工作電源電壓:3 V, 5 V
AMC1210IRHAR 功能描述:有源濾波器 4Ch Dig Filter RoHS:否 制造商:Maxim Integrated 通道數(shù)量:1 截止頻率:150 KHz 電源電壓-最大:11 V 電源電壓-最小:4.74 V 最大工作溫度:+ 85 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP N 封裝:Tube
AMC1210IRHARG4 功能描述:有源濾波器 4Ch Dig Filter RoHS:否 制造商:Maxim Integrated 通道數(shù)量:1 截止頻率:150 KHz 電源電壓-最大:11 V 電源電壓-最小:4.74 V 最大工作溫度:+ 85 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP N 封裝:Tube
AMC1210IRHAT 功能描述:有源濾波器 4 Ch Dig Filter for ADS120X RoHS:否 制造商:Maxim Integrated 通道數(shù)量:1 截止頻率:150 KHz 電源電壓-最大:11 V 電源電壓-最小:4.74 V 最大工作溫度:+ 85 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP N 封裝:Tube
AMC1210IRHATG4 功能描述:有源濾波器 4Ch Dig Filter RoHS:否 制造商:Maxim Integrated 通道數(shù)量:1 截止頻率:150 KHz 電源電壓-最大:11 V 電源電壓-最小:4.74 V 最大工作溫度:+ 85 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP N 封裝:Tube
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