Microchip Technology MCP3425EV 数据表
MCP3425
DS22072B-page 4
© 2009 Microchip Technology Inc.
TEMPERATURE SPECIFICATIONS
Offset Error
V
OS
—
30
—
µV
Tested at PGA = 1
V
V
DD
= 5.0V and DR = 15 SPS
Offset Drift vs. Temperature
—
300
—
nV/°C
V
DD
= 5.0V
Common-Mode Rejection
—
100
—
dB
at DC and PGA =1,
—
105
—
dB
at DC and PGA =8,
T
T
A
= +25°C
Gain vs. V
DD
—
5
—
ppm/V
T
A
= +25°C, V
DD
= 2.7V to 5.5V,
PGA = 1
Power Supply Rejection at DC
—
95
—
dB
T
A
= +25°C, V
DD
= 2.7V to 5.5V,
PGA = 1
Power Requirements
Voltage Range
V
DD
2.7
—
5.5
V
Supply Current during
Conversion
Conversion
I
DDA
—
155
190
µA
V
DD
= 5.0V
—
145
—
µA
V
DD
= 3.0V
Supply Current during Standby
Mode
Mode
I
DDS
—
0.1
0.5
µA
I
2
C Digital Inputs and Digital Outputs
High level input voltage
V
IH
0.7 V
DD
—
V
DD
V
Low level input voltage
V
IL
—
—
0.3V
DD
V
Low level output voltage
V
OL
—
—
0.4
V
I
OL
= 3 mA, V
DD
= +5.0V
Hysteresis of Schmitt Trigger
for inputs (Note 7)
for inputs (Note 7)
V
HYST
0.05V
DD
—
—
V
f
SCL
= 100 kHz
Supply Current when I
2
C bus
line is active
I
DDB
—
—
10
µA
Input Leakage Current
I
ILH
—
—
1
µA
V
IH
= 5.5V
I
ILL
-1
—
—
µA
V
IL
= GND
Pin Capacitance and I
2
C Bus Capacitance
Pin capacitance
C
PIN
—
—
10
pF
I
2
C Bus Capacitance
C
b
—
—
400
pF
Electrical Characteristics: Unless otherwise indicated, T
A
= -40°C to +85°C, V
DD
= +5.0V, V
SS
= 0V.
Parameters
Sym
Min
Typ
Max
Units
Conditions
Temperature Ranges
Specified Temperature Range
TA
-40
—
+85
°C
Operating Temperature Range
T
A
-40
—
+125
°C
Storage Temperature Range
T
A
-65
—
+150
°C
Thermal Package Resistances
Thermal Resistance, 6L SOT-23
θ
JA
—
190.5
—
°C/W
ELECTRICAL CHARACTERISTICS (CONTINUED)
Electrical Specifications: Unless otherwise specified, all parameters apply for T
A
= -40°C to +85°C, V
DD
= +5.0V, V
SS
= 0V,
V
IN
+ = V
IN
- = V
REF
/2. All ppm units use 2*V
REF
as full-scale range.
Parameters
Sym
Min
Typ
Max
Units
Conditions
Note
1:
Any input voltage below or greater than this voltage causes leakage current through the ESD diodes at the input pins.
This parameter is ensured by characterization and not 100% tested.
This parameter is ensured by characterization and not 100% tested.
2:
This input impedance is due to 3.2 pF internal input sampling capacitor.
3:
The total conversion speed includes auto-calibration of offset and gain.
4:
INL is the difference between the endpoints line and the measured code at the center of the quantization band.
5:
Includes all errors from on-board PGA and V
REF
.
6:
Full Scale Range (FSR) = 2 x 2.048/PGA = 4.096/PGA.
7:
This parameter is ensured by characterization and not 100% tested.
8:
This parameter is ensured by design and not 100% tested.