LTC2942I(RevA) Просмотр технического описания (PDF) - Linear Technology
Номер в каталоге
Компоненты Описание
производитель
LTC2942I Datasheet PDF : 18 Pages
| |||
LTC2942
Electrical Characteristics The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 2)
SYMBOL
qLSB
TCE
PARAMETER
Charge LSB (Note 4)
Total Charge Error (Note 5)
Voltage Measurement ADC
CONDITIONS
Prescaler M = 128 (Default), RSENSE = 50mΩ
10mV ≤ |VSENSE| ≤ 50mV DC
10mV ≤ |VSENSE| ≤ 50mV DC, VSENSE + ≤ 4.2V
1mV ≤ |VSENSE| < 50mV DC (Note 8)
MIN
TYP
MAX UNITS
0.085
mAh
±1
%
l
±1.5
%
l
±3.5
%
Resolution (No Missing Codes) (Note 8)
l
14
Bits
VFS
∆VLSB
Full-Scale Voltage
Quantization Step of 14-Bit
Voltage ADC
(Note 6)
l
6
V
366.2
µV
TUEV
Voltage Total Unadjusted Error
1
%
l
1.3
%
Gain
Gain Accuracy
l
1.3
%
VOS
Offset
INL
Integral Nonlinearity
Extrapolated from Measurements at 5.5V and 2.7V
l
±1
±10
LSB
±1
±4
LSB
tCONV
Conversion Time
Temperature Measurement ADC
l
15
ms
Resolution (No Missing Code) (Note 8)
10
Bits
TFS
∆TLSB
Full-Scale Temperature
Quantization Step of 10-Bit
Temperature ADC
(Note 6)
l
600
K
0.586
K
TUET
Temperature Total Unadjusted VSENSE+ ≥ 2.8V (Note 8)
l
Error
±5
K
±3
K
tCONV
Conversion Time
Digital Inputs and Digital Outputs
l
15
ms
VITH
Logic Input Threshold, AL/CC,
SCL, SDA
l 0.3 • VSENSE+
0.7 • VSENSE+
V
VOL
Low Level Output Voltage, AL/CC, I = 3mA
SDA
IIN
Input Leakage, AL/CC, SCL, SDA VIN = VSENSE+/2
CIN
Input Capacitance, AL/CC, SCL, (Note 8)
SDA
l
0.4
V
l
1
µA
l
10
pF
tPCC
Minimum Charge Complete (CC)
Pulse Width
I2C Timing Characteristics
1
µs
fSCL(MAX)
tBUF(MIN)
Maximum SCL Clock Frequency
Bus Free Time Between STOP/
START
tSU,STA(MIN) Minimum Repeated START
Set-Up Time
l
400
900
kHz
l
1.3
µs
l
600
ns
tHD,STA(MIN) Minimum Hold Time (Repeated)
START Condition
tSU,STO(MIN) Minimum Set-Up Time for STOP
Condition
tSU,DAT(MIN) Minimum Data Set-Up
Time Input
tHD,DATI(MIN) Minimum Data Hold Time Input
l
600
ns
l
600
ns
l
100
ns
l
0
µs
2942fa
3
Share Link: 