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| 型号： | MCP355XDV-MS1 |
| 厂商： | Microchip Technology |
| 文件页数： | 9/36页 |
| 文件大小： | 0K |
| 描述： | BOARD DEV SENSOR APP MCP355X |
| 产品培训模块： | MCP3901 Analog Front End |
| 标准包装： | 1 |
| ADC 的数量： | 1 |
| 位数： | 22 |
| 数据接口： | 串行 |
| 输入范围： | ±0.3 V |
| 工作温度： | -40°C ~ 125°C |
| 已用 IC / 零件： | MCP355x |
| 已供物品： | 板，CD，样品 |
| 产品目录页面： | 672 (CN2011-ZH PDF) |
| 相关产品： | MCP3550T-60E/SN-ND - IC ADC 22BIT 2.7V 1CH 8SOIC MCP3550T-60E/MS-ND - IC ADC 22BIT 2.7V 1CH 8MSOP MCP3550T-50E/SN-ND - IC ADC 22BIT 2.7V 1CH 8SOIC MCP3550T-50E/MS-ND - IC ADC 22BIT 2.7V 1CH 8MSOP MCP3550-60E/SN-ND - IC ADC 22BIT 2.7V 1CH 8SOIC MCP3550-60E/MS-ND - IC ADC 22BIT 2.7V 1CH 8MSOP MCP3550-50E/SN-ND - IC ADC 22BIT 2.7V 1CH 8SOIC MCP3550-50E/MS-ND - IC ADC 22BIT 2.7V 1CH 8MSOP MCP3553T-E/SN-ND - IC ADC 22BIT 2.7V 1CH SPI 8SOIC MCP3553T-E/MS-ND - IC ADC 22BIT 2.7V 1CH SPI 8MSOP 更多... |
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2009 Microchip Technology Inc.
DS21950E-page 17
MCP3550/1/3
:
FIGURE 4-2:
SINC Filter Response,
MCP3550-50 Device.
:
FIGURE 4-3:
SINC Filter Response,
MCP3550-60 Device.
:
FIGURE 4-4:
SINC Filter Response,
MCP3551 Device, Simultaneous 50/60 Hz
Rejection.
FIGURE 4-5:
SINC Filter Response at
Integer Multiples of the Sampling Frequency (fs).
4.3
Internal Oscillator
The MCP3550/1/3 devices include a highly stable and
accurate internal oscillator that provides clock signals
to the delta-sigma ADC with minimum jitter. The
oscillator is a specialized structure with a low
temperature coefficient across the full range of
specified operation. See Table 4-1 for oscillator
frequencies.
The conversion time is an integer multiple of the
internal clock period and, therefore, has the same
accuracy as the internal clock frequency. The internal
oscillator frequency is 102.4 kHz ±1% for the
MCP3550-50, 112.64 kHz ±1% for the MCP3551, and
122.88 kHz ±1% for the MCP3550-60 and MCP3553
devices, across the full power supply voltage and
specified temperature ranges.
The notch of the digital filter is proportional to the
internal oscillator frequency, with the exact notch
frequency equivalent to the oscillator accuracy
(< 1% deviation). This high accuracy, combined with
wide notches, will ensure that the MCP3551 will have
simultaneous 50 Hz and 60 Hz line frequency rejection
and the MCP3550-50 or MCP3550-60 devices will
have greater than 120 dB rejection (at either 50 or
60 Hz) by the digital filtering, even when jitter is
present.
The internal oscillator is held in the reset condition
when the part is in Shutdown mode to ensure very low
power consumption (< 1 A in Shutdown mode). The
internal oscillator is independent of all serial digital
interface edges (i.e., state machine processing the
digital SPI interface is asynchronous with respect to the
internal clock edges).
-120
-100
-80
-60
-40
-20
0
50
100
150
200
Frequency (Hz)
A
tt
en
u
at
ion
(
d
B
)
-120
-100
-80
-60
-40
-20
0
60
120
180
240
Frequency (Hz)
Att
en
u
at
io
n
(
d
B
)
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
1020 3040506070 8090 100 110
Frequency (Hz)
A
tt
enu
at
io
n
(
d
B
)
-140
-120
-100
-80
-60
-40
-20
0
28160 56320 84480 112640 140800 168960 197120 225280 253440
Frequency (Hz)
No
rm
a
l
Mo
d
e
Re
je
ct
io
n
(
d
B)
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| MCP3901 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Two Channel Analog Front End |
| MCP3901_10 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Two-Channel Analog Front End |
| MCP3901_11 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Two-Channel Analog Front End Portable Instrumentation |
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| MCP3901A0-E/ML | 功能描述:模数转换器 - ADC Dual Ch Energy Meter Frnt End SPI I-face RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
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