LTC2978CUP-PBF(RevA) Просмотр технического описания (PDF) - Linear Technology
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Компоненты Описание
производитель
LTC2978CUP-PBF
(Rev.:RevA)
(Rev.:RevA)
Linear Technology
LTC2978CUP-PBF Datasheet PDF : 64 Pages
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LTC2978
Electrical Characteristics The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VPWR = VIN_SNS = 12V, VDD33, VDD25 and REF pins floating, unless
otherwise indicated. CVDD33 = 100nF, CVDD25 = 100nF and CREF = 100nF.
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Power-Supply Characteristics
VPWR
VPWR Supply Input Operating Range
l 4.5
15
V
IPWR
VPWR Supply Current
4.5V ≤ VPWR ≤ 15V, VDD33 Floating
l
10
13
mA
IVDD33
VDD33 Supply Current
3.13V ≤ VDD33 ≤ 3.47V, VPWR = VDD33
l
10
13
mA
VUVLO_VDD33 VDD33 Undervoltage Lockout
VDD33 Ramping Up, VPWR = VDD33
l 2.35
2.55
2.8
V
VDD33 Undervoltage Lockout
Hysteresis
120
mV
VDD33
Supply Input Operating Range
Regulator Output Voltage
Regulator Output Short-Circuit Current
VDD25
Regulator Output Voltage
Regulator Output Short-Circuit Current
Voltage Reference Characteristics
VPWR = VDD33
4.5V ≤ VPWR ≤ 15V
VPWR = 4.5V, VDD33 = 0V
3.13V ≤ VDD33 ≤ 3.47V
VPWR = VDD33 = 3.47V, VDD25 = 0V
l 3.13
3.47
V
l 3.13
3.26
3.47
V
l
75
90
140
mA
l 2.35
2.5
2.6
V
l
30
55
80
mA
VREF
Output Voltage
Temperature Coefficient
Hysteresis
(Note 3)
ADC Characteristics
VIN_ADC
Voltage Sense Input Range
Differential Voltage:
l
0
VIN_ADC = (VSENSEPn – VSENSEMn)
Single-Ended Voltage: VSENSEMn
l –0.1
Current Sense Input Range (Odd
Single-Ended Voltage: VSENSEPn, VSENSEMn l –0.1
Numbered Channels Only When So
Configured)
Differential Voltage: VIN_ADC
l –170
1.232
3
100
V
ppm/°C
ppm
6
V
0.1
V
6
V
170
mV
N_ADC
Voltage Sense Resolution
0V ≤ VIN_ADC ≤ 6V
Current Sense Resolution (Odd
Numbered Channels Only When So
Configured)
0mV ≤ |VIN_ADC| < 16mV
16mV ≤ |VIN_ADC| < 32mV
32mV ≤ |VIN_ADC| < 63.9mV
63.9mV ≤ |VIN_ADC| < 127.9mV
127.9mV ≤ |VIN_ADC|
TUE_ADC Total Unadjusted Error
VIN_ADC ≥ 1.8V (Note 4 )
l
INL_ADC Integral Nonlinearity
Voltage Sense Mode (Note 5)
l
122
15.625
31.25
62.5
125
250
±0.25
±854
µV/LSB
µV/LSB
µV/LSB
µV/LSB
µV/LSB
µV/LSB
%
µV
Current Sense Mode, Odd Numbered
l
Channels Only, 15.6µV/LSB (Note 5)
±31.3
µV
DNL_ADC Differential Nonlinearity
Voltage Sense Mode
l
±400
µV
Current Sense Mode, Odd Numbered
l
Channels Only
±31.3
µV
VOS_ADC
Offset Error
GAIN_ADC Gain Error
tCONV_ADC Conversion Time
Voltage Sense Mode
l
Current Sense Mode, Odd Numbered
l
Channels Only
Voltage Sense Mode, VIN_ADC = 6V
l
Current Sense Mode, Odd Numbered
l
Channels Only, VIN_ADC = ±0.17V
Voltage Sense Mode (Note 6)
Current Sense Mode (Note 6)
±250
µV
±35
µV
±0.2
%
±0.2
%
6.15
ms
24.6
ms
Temperature Input (Note 6)
24.6
ms
CIN_ADC
fIN_ADC
Input Sampling Capacitance
Input Sampling Frequency
1
pF
62.5
kHz
2978fa
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