Rainbow-electronics MAX16071 Manual do Utilizador descarregar pdf (Página 3)

12-Channel/8-Channel, Flash-Configurable System

Managers with Nonvolatile Fault Registers

MAX16070/MAX16071

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

= 2.8V to 14V, T

= -40NC to +85NC, unless otherwise specified. Typical values are at ABP = DBP = V

= 3.3V, T

= +25NC.)

(Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

ADC DC ACCURACY

Resolution 10 Bits

Gain Error ADC

GAIN

= +25°C 0.35

= -40°C to +85°C 0.70

Offset Error ADC

OFF

1 LSB

Integral Nonlinearity ADC

INL

1 LSB

Differential Nonlinearity ADC

DNL

1 LSB

ADC Total Monitoring Cycle Time t

CYCLE

No MON_ fault detected 40 50 μs

ADC IN_ Ranges

1 LSB = 5.43mV 5.56

V1 LSB = 2.72mV 2.78

1 LSB = 1.36mV 1.39

CURRENT SENSE

CSP Input-Voltage Range V

CSP

3 14 V

Input Bias Current

CSP

14 25

μA

CSM

CSP

= V

CSM

3 5

CSP Total Unadjusted Error CSP

ERR

(Note 4) 2 %FSR

Overcurrent Differential

Threshold

OVC

CSP

CSM

Gain = 48 21.5 25 30.5

Gain = 24 46 51 56

Gain = 12 94 101 108

Gain = 6 190 202 210

SENSE

Fault Threshold

Hysteresis

OVC

HYS

0.5 % OVC

Secondary Overcurrent Threshold

Timeout

OVC

DEL

r73h[6:5] = ‘00’ 0

r73h[6:5] = ‘01’ 3 4 5

r73h[6:5] = ‘10’ 12 16 20

r73h[6:5] = ‘11’ 50 64 60

SENSE

Ranges

Gain = 6 232

Gain = 12 116

Gain = 24 58

Gain = 48 29

ADC Current Measurement

Accuracy

SENSE

= 150mV (gain = 6 only) -2.5

Q0.2

+2.5

SENSE

= 50mV, gain = 12 -4

Q0.2

SENSE

= 25mV, gain = 24

Q0.5

SENSE

= 10mV, gain = 48

Gain Accuracy

SENSE

= 20mV to 100mV, V

CSP

= 5V,

gain = 6

-1.5 +1.5 %

Common-Mode Rejection Ratio CMRR

SNS

CSP

> 4V 80 dB

Power-Supply Rejection Ratio PSRR

SNS

80 dB

1 2 3 4 5 6 7 8 ... 50 51

MAX16070/MAX16071 1

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