ADM1178 Просмотр технического описания (PDF) - Analog Devices
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ADM1178 Datasheet PDF : 24 Pages
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ADM1178
Data Sheet
Parameter
MONITORING ACCURACY1
Current Sense Absolute Accuracy
0°C to +70°C
0°C to +85°C
−40°C to +85°C
VSENSE for ADC Full Scale2
Voltage Sense Accuracy
0°C to +70°C
0°C to +85°C
−40°C to +85°C
VCC for ADC Full Scale3
Low Range (VRANGE = 1)
High Range (VRANGE = 0)
I2C TIMING
Low Level Input Voltage, VIL
High Level Input Voltage, VIH
Low Level Output Voltage on SDA, VOL
Output Fall Time on SDA from VIHMIN to VILMAX
Maximum Width of Spikes Suppressed by
Input Filtering on SDA and SCL Pins
Input Current, II, on SDA/SCL When Not
Driving a Logic Low Output
Input Capacitance on SDA/SCL
SCL Clock Frequency, fSCL
Low Period of the SCL Clock
High Period of the SCL Clock
ADC Conversion Time4
Fast Overcurrent Response Time5
Setup Time for a Repeated Start Condition, tSU;STA
SDA Output Data Hold Time, tHD;DAT
Setup Time for a Stop Condition, tSU;STO
Bus Free Time Between a Stop and a Start
Condition, tBUF
Capacitive Load for Each Bus Line
Min
Typ Max Unit Test Conditions/Comments
−1.45
−1.8
−2.8
−5.7
−1.5
−1.8
−2.95
−6.1
−1.95
−2.45
−3.85
−6.7
105.84
+1.45
+1.8
+2.8
+5.7
+1.5
+1.8
+2.95
+6.1
+1.95
+2.45
+3.85
+6.7
%
VSENSE = 75 mV
%
VSENSE = 50 mV
%
VSENSE = 25 mV
%
VSENSE = 12.5 mV
%
VSENSE = 75 mV
%
VSENSE = 50 mV
%
VSENSE = 25 mV
%
VSENSE = 12.5 mV
%
VSENSE = 75 mV
%
VSENSE = 50 mV
%
VSENSE = 25 mV
%
VSENSE = 12.5 mV
mV
−0.85
−0.9
−0.85
−0.9
−0.9
−1.15
+0.85 %
+0.9
%
+0.85 %
+0.9
%
+0.9 %
+1.15 %
VCC = 3 V minimum (low range)
VCC = 6 V minimum (high range)
VCC = 3 V minimum (low range)
VCC = 6 V minimum (high range)
VCC = 3 V minimum (low range)
VCC = 6 V minimum (high range)
6.65
V
26.35
V
0.7 VBUS
20 + 0.1 CBUS
50
−10
5
600
1300
150
4
600
100
600
1300
0.3 VBUS V
V
0.4
V
250
ns
250
ns
VBUS = 3.0 V to 5.5 V
VBUS = 3.0 V to 5.5 V
IOL = 3 mA
CBUS = bus capacitance from SDA to GND
+10
µA
pF
400
kHz
ns
ns
µs
10
µs
ns
900
ns
ns
ns
400
pF
1 Monitoring accuracy is a measure of the error in a code that is read back for a particular voltage/current. This is a combination of amplifier error, reference error, ADC
error, and error in ADC full-scale code conversion factor.
2 This is an absolute value to be used when converting ADC codes to current readings; any inaccuracy in this value is factored into absolute current accuracy values (see
the Specifications for the Current Sense Absolute Accuracy parameter).
3 These are absolute values to be used when converting ADC codes to voltage readings; any inaccuracy in these values is factored into voltage accuracy values (see the
Specifications for the Voltage Sense Accuracy parameter).
4 Time between the receipt of the command byte and the actual ADC result being placed in the register.
5 Guaranteed by design; not production tested.
Rev. D | Page 4 of 24
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