參數(shù)資料
型號(hào)： MCP3903T-E/SS
廠商： Microchip Technology
文件頁(yè)數(shù)： 6/15頁(yè)
文件大小： 0K
描述： IC AFE 24BIT 64KSPS 6CH 28SSOP
產(chǎn)品培訓(xùn)模塊： MCP3903 6-Channel Energy Measurement Analog Front End
標(biāo)準(zhǔn)包裝： 2,100
位數(shù)： 24
通道數(shù)： 6
電壓 - 電源，模擬： 4.5 V ~ 5.5 V
電壓 - 電源，數(shù)字： 2.7 V ~ 3.6 V
封裝/外殼： 28-SSOP（0.209"，5.30mm 寬）
供應(yīng)商設(shè)備封裝： 28-SSOP
包裝： 帶卷 (TR)
MCP3903
DS25048B-page 14
2011 Microchip Technology Inc.
3.0
PIN DESCRIPTION
TABLE 3-1:
PIN FUNCTION TABLE
3.1
RESET
This pin is active low and places the entire chip in a
reset state when active.
When RESET=0, all registers are reset to their default
value, no communication can take place, no clock is
distributed inside the part. This state is equivalent to a
POR state.
Since the default state of the ADCs is on, the analog
power consumption when RESET = 0 is equivalent to
when RESET = 1. Only the digital power consumption
is largely reduced because this current consumption is
essentially dynamic and is reduced drastically when
there is no clock running. All the analog biases are
enabled during a reset so that the part is fully
operational just after a RESET rising edge. This input
is Schmitt triggered.
3.2
Digital VDD (DVDD)
DVDD is the power supply pin for the digital circuitry
within the MCP3903. This pin requires appropriate
bypass capacitors and should be maintained between
2.7V and 3.6V for specified operation.
Pin No.
Symbol
Function
1AVDD
Analog Power Supply Pin
2
CH0+
Non-Inverting Analog Input Pin for Channel 0
3
CH0-
Inverting Analog Input Pin for Channel 0
4
CH1-
Inverting Analog Input Pin for Channel 1
5
CH1+
Non-Inverting Analog Input Pin for Channel 1
6
CH2+
Non-Inverting Analog Input Pin for Channel 2
7
CH2-
Inverting Analog Input Pin for Channel 2
8
CH3-
Inverting Analog Input Pin for Channel 3
9
CH3+
Non-Inverting Analog Input Pin for Channel 3
10
CH4+
Non-Inverting Analog Input Pin for Channel 4
11
CH4-
Inverting Analog Input Pin for Channel 4
12
CH5-
Inverting Analog Input Pin for Channel 5
13
CH5+
Non-Inverting Analog Input Pin for Channel 5
14
REFIN+/OUT Non-Inverting Voltage Reference Input and Internal Reference Output Pin
15
REFIN-
Inverting Voltage Reference Input Pin
16
AGND
Analog Ground Pin, Return Path for internal analog circuitry
17
DGND
Digital Ground Pin, Return Path for internal digital circuitry
18
DRA
Data Ready Signal Output for channels pair A
19
DRB
Data Ready Signal Output for channels pair B
20
DRC
Data Ready Signal Output for channels pair C
21
OSC1
Oscillator Crystal Connection Pin or Clock Input Pin
22
OSC2
Oscillator Crystal Connection Pin
23
CS
Chip Select for Serial Interface
24
SCK
Serial Interface Clock Pin
25
SDO
Serial Interface Data Output Pin
26
SDI
Serial Interface Data Input Pin
27
RESET
Master Reset Logic Input Pin
28
DVDD
Digital Power Supply Pin
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