Datasheet

ADP1046A Data Sheet
Rev. 0 | Page 6 of 88
Parameter Symbol Test Conditions/Comments Min Typ Max Unit
CURRENT SENSE 2 (CS2+, CS2−
PINS)
Input Voltage Range V
IN
Differential voltage from CS2+ to CS2−,
LSB = 29.297 μV
0 120 mV
Usable Input Voltage Range
0
110
mV
ADC Clock Frequency 1.56 MHz
Temperature Coefficient
120 mV Range 0 mV to 100 mV 78 ppm/°C
0 mV to 50 mV 70 ppm/°C
60 mV Range 0 mV to 50 mV 156 ppm/°C
0 mV to 25 mV 140 ppm/°C
Current Sense Measurement
120 mV Setting 0 mV to 110 mV −2.1 +2.1 % FSR
−2.52 +2.52 mV
60 mV Setting 0 mV to 55 mV −4.2 +4.2 % FSR
−5.04 +5.04 mV
Current Sense Measurement
Accuracy
With 0.01% level shifting resistors
120 mV Setting 0 mV to 100 mV, V
DD
= 3.3 V −0.9 +0.9 % FSR
−1.08 +1.08 mV
60 mV Setting
0 mV to 55 mV, V
DD
= 3.3 V
−1.8
+1.8
% FSR
−2.16
+2.16
mV
Current Sense Measurement
Resolution
12 Bits
CS2 Accurate OCP Speed 2.62 5.24 ms
Current Sink (High Side) 2 mA
Current Source (Low Side) 200 μA
Common-Mode Voltage at the
CS2+ and CS2− Pins
To achieve CS2 measurement accuracy 0.8 1.0 1.4 V
OrFET PROTECTION (CS2+, CS2−) Low-side and high-side current sensing
Fast OrFET Accuracy −3 mV setting +3.5 −3.00 −9.5 mV
−6 mV setting +0.29 −6.21 −12.71 mV
−9 mV setting −2.68 −9.43 −16.18 mV
−12 mV setting −5.89 −12.64 −19.39 mV
−15 mV setting −9.01 −15.86 −22.71 mV
−18 mV setting
−12.22
−19.07
−25.92
mV
−21 mV setting −15.29 −22.29 −29.29 mV
−24 mV setting −18.50 −25.50 −32.50 mV
Fast OrFET Speed Debounce = 40 ns 110 150 ns
RTD TEMPERATURE SENSE
ADC Clock Frequency 1.56 MHz
Input Voltage Range RTD to AGND 0 1.6 V
Usable Input Voltage Range 0 1.3 V
Source Current Factory trimmed to 46 μA (Register 0x11
set to 0xE6)
44.35 46 47.65 µA
Current source set to 10 µA 9.25 10.1 10.85 µA
Current source set to 20 µA 18.35 20.1 21.85 µA
Current source set to 30 µA 28.45 30.2 31.95 µA
Current source set to 40 µA
38.45
40.3
41.95
µA
Source Current Fine Setting See Register 0x11[5:0] 160 nA
RTD ADC
Register Update Rate 10 ms
Resolution 12 Bits