Datasheet

LTC4274A/LTC4274C
9
4274acfc
TYPICAL PERFORMANCE CHARACTERISTICS
ADC Noise Histogram
Current Readback in Slow Mode
ADC Integral Nonlinearity
Current Readback in Slow Mode
ADC Noise Histogram Port
Voltage Readback in Fast Mode
ADC Integral Nonlinearity
Voltage Readback in Fast Mode
ADC Noise Histogram Port
Voltage Readback in Slow Mode
ADC Integral Nonlinearity
Voltage Readback in Slow Mode
INT and SDAOUT Pull-Down Voltage
vs Load Current
MOSFET Gate Drive with Fast
Pull-Down
ADC OUTPUT
0
B
IN
COUNT
300
250
200
150
100
50
6139
6141
4274AC G17
6143 6145 6147
V
SENSE
– V
EE
= 110.4mV
CURRENT SENSE RESISTOR INPUT VOLTAGE (mV)
0
ADC INTEGRAL NONLINEARITY (LSBs)
0
0.5
400
4274AC G18
–0.5
–1.0
100
200
250
500
1.0
300
50
150
450
350
ADC OUTPUT
260
0
B
IN
COUNT
600
500
400
300
200
100
262261
263
4274AC G19
264 265
AGND – V
OUT
= 48.3V
PORT VOLTAGE (V)
0
ADC INTEGRAL NONLINEARITY (LSBs)
0
0.5
50
4274AC G20
–0.5
–1.0
20
30
60
1.0
40
10
ADC OUTPUT
8532
0
B
IN
COUNT
600
500
400
300
200
100
85348533
8535
4274AC G21
8536
AGND – V
OUT
= 48.3V
PORT VOLTAGE (V)
0
ADC INTEGRAL NONLINEARITY (LSBs)
0
0.5
50
4274AC G22
–0.5
–1.0
20
30
60
1.0
40
10
LOAD CURRENT (mA)
0
0
PULL-DOWN VOLTAGE (V)
3
2.5
2
1.5
1
0.5
105
15
4274AC G23
20 25 30 35 40
100µs/DIV
GND
0mA
4274AC G24
V
EE
V
EE
PORT
CURRENT
500mA/DIV
GATE
VOLTAGE
10V/DIV
PORT
VOLTAGE
20V/DIV
CURRENT LIMIT
50 FAULT REMOVED
50
FAULT
APPLIED
V
DD
= 3.3V
V
EE
= –54V
FAST PULL-DOWN