SMM151 View Datasheet(PDF) - Summit Microelectronics

Part Name

Description

Manufacturer

SMM151

Single-channel Voltage/Current Monitors and Voltage Marginers

Summit Microelectronics 

SMM151/152

Preliminary Datasheet

DC OPERATING CHARACTERISTICS (CONTINUED)

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

Symbol Parameter

Notes

Min. Typ.

IAIT

OV/UV

VHYST

RPull-Up

VREF

MARGACC

VMADC

RVM

CMRRVM

CSADC

CSACC

CMRRCS

Address Input Tristate

Maximum Leakage – High Z

VDD = 2.7V

VDD = 5.0V

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

VREF=1.25V

Internal COMP1/2 Reference

VREF=0.5V

Margin Accuracy

Voltage Monitor ADC

Measure Range

VM+, VM- Input Resistance

Voltage Sense Common

Mode Rejection Ratio

Current Monitor ADC

Measure Range

Current Sense Accuracy

VM+ - VM- = 1.2V Note 4

VM+ - VM- = 2.5V, Note 4

VM+ - VM-

VCM (VM+, VM-) = 0.5V – VDD, Note 5

CS+ - CS-

CSADC ≥ 50mV, Note 2

CSADC < 50mV, Note 2

Current Sense Common

Mode Rejection Ratio

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

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

-3.0

-3.0

0

1.24

0.495

-1.0

-1.0

0

0

-2

-1

10

50

1.25

0.500

±0.75

±0.75

50

62

100

80

Max Unit

+3.0 µA

+3.0

VDD V

mV

kΩ

1.26

V

0.505

+1.0 %

+1.0 %

VDD V

kΩ

dB

100 mV

+2

%

+1 mV

dB

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: 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: Guaranteed by Design

Summit Microelectronics, Inc

2131 2.1 8/15/2008

7

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