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参数资料
| 型号： | DC1496B-B |
| 厂商： | Linear Technology |
| 文件页数： | 3/18页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL LTC2942 |
| 软件下载： | QuikEval System |
| 设计资源： | DC1496B Design Files |
| 标准包装： | 1 |
| 系列： | QuikEval™ |
| 主要目的： | 电源管理，燃料量计 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | LTC2942 |
| 主要属性： | I²C、SMBus 接口 |
| 次要属性： | LED 状态指示器 |
| 已供物品： | 板，线缆 |
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LTC2942
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T A = 25°C. (Note 2)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
q LSB
TCE
Charge LSB (Note 4)
Total Charge Error (Note 5)
Prescaler M = 128 (Default), R SENSE = 50mΩ
10mV ≤ |V SENSE | ≤ 50mV DC
10mV ≤ |V SENSE | ≤ 50mV DC, V SENSE + ≤ 4.2V
1mV ≤ |V SENSE | < 50mV DC (Note 8)
l
l
0.085
±1
±1.5
±3.5
mAh
%
%
%
Voltage Measurement ADC
Resolution (No Missing Codes)
(Note 8)
l
14
Bits
V FS
? V LSB
TUE V
Gain
Full-Scale Voltage
Quantization Step of 14-Bit
Voltage ADC
Voltage Total Unadjusted Error
Gain Accuracy
(Note 6)
l
l
l
6
366.2
1
1.3
1.3
V
μV
%
%
%
V OS
INL
t CONV
Offset
Integral Nonlinearity
Conversion Time
Extrapolated from Measurements at 5.5V and 2.7V
l
l
±1
±1
±10
±4
15
LSB
LSB
ms
Temperature Measurement ADC
Resolution (No Missing Code)
(Note 8)
10
Bits
T FS
? T LSB
Full-Scale Temperature
Quantization Step of 10-Bit
Temperature ADC
(Note 6)
l
600
0.586
K
K
TUE T
t CONV
Temperature Total Unadjusted
Error
Conversion Time
V SENSE+ ≥ 2.8V (Note 8)
l
l
±5
±3
15
K
K
ms
Digital Input s and Digital Outputs
V ITH
V OL
Logic Input Threshold, AL /CC,
SCL, SDA
Low Level Output Voltage, AL /CC, I = 3mA
SDA
l
l
0.3 ? V SENSE+
0.7 ? V SENSE+
0.4
V
V
I IN
C IN
t PCC
Input Leakage, AL /CC, SCL, SDA
Input Capacitance, AL /CC, SCL,
SDA
Minimum Charge Complete (CC)
Pulse Width
V IN = V SENSE+ /2
(Note 8)
l
l
1
10
1
μA
pF
μs
I 2 C Timing Characteristics
f SCL(MAX)
t BUF(MIN)
Maximum SCL Clock Frequency
Bus Free Time Between STOP/
START
l
l
400
900
1.3
kHz
μs
t SU,STA(MIN) Minimum Repeated START
Set-Up Time
t HD,STA(MIN) Minimum Hold Time (Repeated)
START Condition
t SU,STO(MIN) Minimum Set-Up Time for STOP
Condition
t SU,DAT(MIN) Minimum Data Set-Up
Time Input
t HD,DATI(MIN) Minimum Data Hold Time Input
l
l
l
l
l
600
600
600
100
0
ns
ns
ns
ns
μs
2942fa
3
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