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參數(shù)資料
| 型號(hào)： | MCP3903T-I/SS |
| 廠商： | Microchip Technology |
| 文件頁(yè)數(shù)： | 9/15頁(yè) |
| 文件大?。?/td> | 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) |
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2011 Microchip Technology Inc.
DS25048B-page 3
MCP3903
1.0
ELECTRICAL
CHARACTERISTICS
The Reliability Targets section includes the absolute
maximum ratings for the device, defining the values
that will cause no long term damage regardless of
duration.
These tables also represent the testing requirements
per the Max. and Min. columns.
1.1
RELIABILITY TARGETS
ABSOLUTE MAXIMUM RATINGS
V
DD ................................................................................... 7.0V
Digital inputs and outputs w.r.t. AGND ........-0.6V to VDD +0.6V
Analog input w.r.t. AGND..................................... ....-6V to +6V
VREF input w.r.t. AGND................................-0.6V to VDD +0.6V
Storage temperature..................................... -65°C to +150°C
Ambient temp. with power applied................ -65°C to +125°C
Soldering temperature of leads (10 seconds)............. +300°C
ESD on the analog inputs (HBM,MM)................. 5.0 kV, 500V
ESD on all other pins (HBM,MM)........................ 5.0 kV, 500V
TABLE 1-1:
ANALOG SPECIFICATIONS TARGET TABLE
Electrical Specifications:
Unless otherwise indicated, all parameters apply at AVDD = 4.5 to 5.5V, DVDD = 2.7 to
3.6V, Internal VREF, MCLK = 4 MHz;PRESCALE = 1; OSR = 64; fS = 1 MHz; fD = 15.625 ksps; TA = -40°C to +125°C,
GAIN = 1, VIN = 1VPP = 353mVRMS @ 50/60 Hz.
Param.
Num.
Symbol
Characteristic
Min.
Typ.
Max.
Units
Test Conditions
Internal Voltage Reference
A001
VREF
Voltage
-2%
2.35
+2%
V
VREFEXT = 0
A002
TCREF
Tempco
—
5
—
ppm/°C VREFEXT = 0
A003
ZOUTREF Output Impedance
7
—
k
Ω
AVDD=5V,
VREFEXT = 0
Voltage Reference Input
A004
Input Capacitance
—
10
pF
A005
VREF
Differential Input Voltage
Range (VREF+ - VREF-)
2.2
—
2.6
V
VREF = (VREF+ - VREF-),
VREFEXT = 1
A006
VREF+
Absolute Voltage on REFIN+
pin
1.9
—
2.9
V
VREFEXT = 1
A007
VREF-
Absolute Voltage on REFIN-
pin
-0.3
—
+0.3
V
VREF- should be connected
to AGND when VREFEXT=0
ADC Performance
A008
Resolution (No Missing
Codes)
24
bits
OSR = 256 (see Table 5-2)
A009
fS
Sampling Frequency
See Table 4-2
kHz
fS = DMCLK = MCLK / (4 x
PRESCALE)
A010
fD
Output Data Rate
See Table 4-2
ksps
fD = DRCLK= DMCLK / OSR
= MCLK / (4 x PRESCALE x
OSR)
Note 1:
This specification implies that the ADC output is valid over this entire differential range, i.e. there is no distortion or
instability across this input range. Dynamic Performance is specified at -0.5 dB below the maximum signal range,
VIN = -0.5 dBFS @ 50/60 Hz = 333 mVRMS, VREF = 2.4V.
2:
See terminology section for definition.
3:
This parameter is established by characterization and not 100% tested.
4:
For these operating currents, the following configuration bit settings apply: Config Register Settings:
SHUTDOWN<5:0> = 000000, RESET<5:0> = 000000; VREFEXT = 0, CLKEXT = 0.
5:
For these operating currents, the following configuration bit settings apply: Config Register Settings:
SHUTDOWN<5:0> = 111111, VREFEXT = 1, CLKEXT = 1.
6:
Applies to all gains. Offset error is dependant on PGA gain setting.
7:
Outside of this range, ADC accuracy is not specified. An extended input range of +/- 6V can be applied continuously to
the part with no risk for damage.
8:
For proper operation and to keep ADC accuracy, AMCLK should always be in the range of 1 to 5 MHz with BOOST bits
off. With BOOST bits on, AMCLK should be in the range of 1 to 8.192 MHz. AMCLK = MCLK/PRESCALE. When using a
crystal, CLKEXT bit should be equal to ‘0’.
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