ADP1051 Просмотр технического описания (PDF) - Analog Devices
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ADP1051 Datasheet PDF : 108 Pages
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ADP1051
Data Sheet
Parameter
CS2+, CS2− CURRENT SENSE PINS
Input Voltage Range
Common-Mode Voltage at CS2+ and CS2−
Current Sink (High Side)
Current Source (Low Side)
Temperature Coefficient
CS2 ADC
Valid Input Voltage Range
ADC Clock Frequency
Measurement Resolution
Low-Side Mode Current Measurement
Sense Accuracy
High-Side Mode Current Measurement
Sense Accuracy
CS2 OCP Digital Comparator
Threshold Accuracy
Symbol Min
VIN
0
0.8
1.87
195
0
−1.9
−2.28
−6.1
−7.32
−1.6
−1.92
−5.3
−6.36
Comparator Update Speed
CS2 Reverse Current Comparator
Threshold Accuracy
Propagation Delay
RTD TEMPERATURE SENSE PIN
Input Voltage Range
Source Current
RTD ADC
Valid Input Voltage Range
ADC Clock Frequency
Register Update Rate
Measurement Resolution
−8.5
−11.5
−14
−17
−21
−24
−27
−30
VIN
0
44.6
38.6
28.6
18.6
9.1
0
Typ
Max Unit
Test Conditions/Comments
120 mV
Differential voltage from CS2+ to CS2−
1.15 1.4 V
To achieve CS2 measurement accuracy
1.915 1.96 mA
225
255 μA
95
ppm/°C
120 mV
1.56
MHz
12
Bits
4.99 kΩ (0.01%) level shift resistors
+1.9 % FSR From 0 mV to 110 mV
+2.28 mV
+1.4 % FSR From 110 mV to 120 mV
+1.68 mV
CS2 high-side factory trim values loaded;
4.99 kΩ (0.01%) level shift resistors;
VOUT = 11 V
+2.3 % FSR From 0 mV to 110 mV
+2.76 mV
+0.7 % FSR From 110 mV to 120 mV
+0.84 mV
Triggers IOUT_OC_FAULT flag
Same as CS2 ADC low-side and high-side
mode current measurement sense
accuracy values
82
µs
When set to the 7-bit averaging speed
328
µs
When set to the 9-bit averaging speed
Triggers SR_RC_FAULT flag
−3
+3
mV
SR_RC_FAULT_LIMIT set to −3 mV
−6
0
mV
SR_RC_FAULT_LIMIT set to −6 mV
−9
−3
mV
SR_RC_FAULT_LIMIT set to −9 mV
−12
−6
mV
SR_RC_FAULT_LIMIT set to −12 mV
−15
−9
mV
SR_RC_FAULT_LIMIT set to −15 mV
−18
−12 mV
SR_RC_FAULT_LIMIT set to −18 mV
−21
−15 mV
SR_RC_FAULT_LIMIT set to −21 mV
−24
−18 mV
SR_RC_FAULT_LIMIT set to −24 mV
110
150 ns
Debounce time = 40 ns
1.6
V
Voltage from RTD to AGND
46
47.3 μA
Register 0xFE2D = 0xE6, factory default
setting
40
42
μA
Register 0xFE2D = 0xB0
30
31.8 μA
Register 0xFE2D = 0x80
20
21.6 μA
Register 0xFE2D = 0x40
10
11
μA
Register 0xFE2D = 0x00
1.6
V
1.56
MHz
10
ms
12
Bits
Rev. B | Page 6 of 108
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