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参数资料
| 型号： | ADM00398 |
| 厂商： | Microchip Technology |
| 文件页数： | 13/17页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL FOR 16BIT MCU MCP3911 |
| 设计资源： | MCP3911 Eval Brd Schematics ADM00398 BOM ADM00398 Gerber Files |
| 标准包装： | 1 |
| 类型： | MCU |
| 适用于相关产品： | MCP3911，PIC24FJ256GA110 |
| 所含物品： | 板，线缆 |
2012 Microchip Technology Inc.
DS22286A-page 5
MCP3911
ZOUTVREF
Output Impedance
2
—
k
Ω
VREFEXT = 0
AIDDVREF
Internal Voltage Reference
Operating Current
25
—
A
VREFEXT=0, SHUT-
DOWN<1:0>=11
Voltage Reference Input
Input Capacitance
—
10
pF
VREF
Differential Input Voltage
Range (VREF+ - VREF -)
1.1
—
1.3
V
VREFEXT = 1
VREF+
Absolute Voltage on
REFIN+ pin
VREF- +
1.1
—VREF- + 1.3
V
VREFEXT = 1
VREF-
Absolute Voltage REFIN- pin
-0.1
—
+0.1
V
REFIN- should be con-
nected to AGND when
VREFEXT=0
Master Clock Input
fMCLK
Master Clock Input Frequency
Range
—
20
MHz
CLKEXT = 1, (Note 6)
fXTAL
Crystal Oscillator Operating
Frequency Range
1
—
20
MHz
CLKEXT = 0, (Note 6)
AMCLK
Analog Master Clock
—
16
MHz
Power Supply
AVDD
Operating Voltage, Analog
2.7
—
3.6
V
DVDD
Operating Voltage, Digital
2.7
—
3.6
V
IDD,A
Operating Current, Analog
—
1.5
2.3
mA
BOOST<1:0>=00
—
1.8
2.8
mA
BOOST<1:0>=01
—
2.5
3.5
mA
BOOST<1:0>=10
—
4.4
6.25
mA
BOOST<1:0>= 11
IDD,D
Operating Current, Digital
—
0.2
0.3
mA
MCLK = 4 MHz,
proportional to MCLK
—
0.7
—
mA
MCLK = 16 MHz, pro-
portional to MCLK
IDDS,A
Shutdown Current, Analog
—
1
A
IDDS,D
Shutdown Current, Digital
—
1
A
TABLE 1-1:
ANALOG SPECIFICATIONS TARGET TABLE (CONTINUED)
Electrical Specifications: Unless otherwise indicated, all parameters apply at AVDD = DVDD = 2.7V to 3.6V, MCLK =
4 MHz; PRE<1:0> = 00; OSR = 256; GAIN = 1; VREFEXT=0, CLKEXT=1, AZ_FREQ=0, DITHER<1:0>=11,
BOOST<1:0> = 10; VCM=0V; TA = -40°C to +125°C; VIN = 1.2 VPP = 424 mVRMS @ 50/60 Hz on both channels.
Sym
Characteristic
Min
Typ
Max
Units
Test Conditions
Note 1:
This specification implies that the ADC output is valid over this entire differential range and that there is no distortion or
instability across this input range. Dynamic Performance specified at -0.5 dB below the maximum signal range, VIN =
1.2VPP = 424 mVRMS, VREF = 1.2V @ 50/60 Hz. See terminology section for definition. This parameter is established
by characterization and not 100% tested. See performance graphs for other than default settings provided here.
2:
For these operating currents the following configuration bit settings apply: SHUTDOWN<1:0>=00, RESET<1:0>=00,
VREFEXT=0, CLKEXT=0.
3:
For these operating currents the following configuration bit settings apply: SHUTDOWN<1:0>=11, VREFEXT=1,
CLKEXT=1.
4:
Applies to all gains. Offset and gain errors depend on PGA gain setting, see typical performance curves for typical per-
formance.
5:
Outside of this range, ADC accuracy is not specified. An extended input range of +/-2 V can be applied continuously to
the part with no damage.
6:
For proper operation, and for optimizing ADC accuracy, AMCLK should be limited to the maximum frequency defined in
the Table 5-2 as a function of the BOOST and PGA setting chosen. MCLK can take larger values as long as the pres-
caler settings (PRE<1:0>) limit AMCLK=MCLK/PRESCALE in the defined range in the Table 5-2.
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