SMM152NC(2010) データシートの表示（PDF） - Summit Microelectronics

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SMM152NC
(Rev.:2010)

Single-channel Voltage/Current Monitors and Voltage Marginers

Summit Microelectronics 

SMM151/152

DC OPERATING CHARACTERISTICS (CONTINUED)

TA= 0°C to +70°C, VDD = 2.7V to 5.5V, VCS = 4.0V to 15V, unless otherwise noted. All voltages are relative to GND.

Note 6.

Symbol Parameter

Notes

Min. Typ. Max Unit

IAIT

OV/UV

VHYST

RPull-Up

Address Input Tristate

Maximum Leakage – High Z

Monitor Voltage Range

COMP1/2 DC Hysteresis

Input Pull-Up Resistors

COMP1 and COMP2 pins

COMP1 and COMP2 pins,

VTH-VTL (see Note 1)

See Pin Descriptions, Note 5

-3.0

+3.0 μA

0

VDD V

10

mV

50

kΩ

VREF

VREF=1.25V

Internal COMP1/2 Reference

VREF=0.5V

1.24 1.25 1.26

V

0.495 0.500 0.505

MARGACC

VMADC

RVM

CMRRVM

CSADC

Margin Accuracy

Voltage Monitor ADC

Measure Range

VM+, VM- Input Resistance

Voltage Sense Common

Mode Rejection Ratio

Current Monitor ADC

Measure Range

VM+ - VM- = 1.2V, Note 4

VM+ - VM- = 2.5V, Note 4

VM+ - VM-

Note 5

VCM (VM+, VM-) = 0.5V – VDD, Note 5

Minimum CS+ - CS- voltage

Maximum CS+ - CS- voltage

-1.0 ±0.75 +1.0 %

-1.0 ±0.75 +1.0 %

0

VDD V

50

kΩ

62

dB

0

mV

100

CSACC

Current Sense Accuracy

CSADC ≥ 50mV, Note 2

CSADC < 50mV, Note 2

-2

+2

%

-1

+1 mV

CMRRCS

Current Sense Common

Mode Rejection Ratio

VCM (CS+, CS-) = 5.0V, Note 5

VCM (CS+, CS-) = 12V, Note 5

100

dB

80

Note 1: VHYST is measured with a 1.25V external voltage and is determined by subtracting Threshold Low from Threshold High, VTH-VTL while

monitoring the FAULT# pin state. Actual DC Hysteresis is derived from the equation: (VIN(COMP1/2)/VREF)(VHYST). For example, if VIN(COMP1/2)/=2.5V

and VREF=1.25V then Actual DC Hysteresis= (2.5V/1.25V)(0.003V)=6mV.

Note 2: Current sense accuracy depends on the current sense resistor tolerance. Kelvin sensing of the voltage drop across this resistor must be

used to guarantee accuracy. Accuracy at the low range of the current monitor ADC will be adversely impacted by offset errors.

Note 3: It is recommended that ADC reads occur with a frequency of not more than 250Hz.

Note 4: Voltage accuracy is only guaranteed for factory-programmed settings. Changing voltage from the value reflected in the customer specific

CSIR code may result in inaccuracies exceeding those specified above.

Note 5: Not 100% Production tested. Guaranteed by Design and/or Characterization.

Note 6: All electrical parameters are guaranteed to function over the stated VDD, VCS and temperature range. Electrical parameters not specified

as "guaranteed by design" are tested with a VDD voltage required of the specific application. For example, if the device is to be operated at 3.3V

and VCS supply of 12V, it is tested with a VDD supply of 3.3V, +-10% and a VCS supply of 12V, +-10%.

Summit Microelectronics, Inc

2131 3.0 1/20/2010

7

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