參數(shù)資料
型號(hào)： LTC2155IUP-14#PBF
廠商： LINEAR TECHNOLOGY CORP
元件分類(lèi)： ADC
英文描述： 2-CH 14-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQCC64
封裝： 9 X 9 MM, LEAD FREE, PLASTIC, MO-220WNJR-5, QFN-64
文件頁(yè)數(shù)： 27/32頁(yè)
文件大?。?/td> 647K
代理商： LTC2155IUP-14#PBF
LTC2157-14/
LTC2156-14/LTC2155-14
4
21576514f
INTERNAL REFERENCE CHARACTERISTICS The l denotes the specifications which apply over the
full operating temperature range, otherwise specifications are at TA = 25°C. (Note 5)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VCM Output Voltage
IOUT = 0
0.435
VDD – 18mV
0.435
VDD
0.435
VDD + 18mV
V
VCM Output Temperature Drift
±37
ppm/°C
VCM Output Resistance
–1mA < IOUT < 1mA
4
Ω
VREF Output Voltage
IOUT = 0
1.225
1.250
1.275
V
VREF Output Temperature Drift
±30
ppm/°C
VREF Output Resistance
–400μA < IOUT < 1mA
7
Ω
VREF Line Regulation
1.7V < VDD < 1.9V
0.6
mV/V
DIGITAL INPUTS AND OUTPUTS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 5)
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
ENCODE INPUTS (ENC+, ENC–)
VID
Differential Input Voltage
(Note 8)
l
0.2
V
VICM
Common Mode Input Voltage
Internally Set
Externally Set (Note 8)
l
1.1
1.2
1.5
V
RIN
Input Resistance
(See Figure 2)
10
kΩ
CIN
Input Capacitance
(Note 8)
2
pF
DIGITAL INPUTS (CS, SDI, SCK)
VIH
High Level Input Voltage
VDD = 1.8V
l
1.3
V
VIL
Low Level Input Voltage
VDD = 1.8V
l
0.6
V
IIN
Input Current
VIN = 0V to 3.6V
l
–10
10
μA
CIN
Input Capacitance
(Note 8)
3
pF
SDO OUTPUT (Open-Drain Output. Requires 2k Pull-Up Resistor if SDO Is Used)
ROL
Logic Low Output Resistance to GND
VDD = 1.8V, SDO = 0V
200
Ω
IOH
Logic High Output Leakage Current
SDO = 0V to 3.6V
l
–10
10
μA
COUT
Output Capacitance
(Note 8)
4
pF
POWER REQUIREMENTS The l denotes the specifications which apply over the full operating temperature
range, otherwise specifications are at TA = 25°C. (Note 5)
SYMBOL PARAMETER
CONDITIONS
LTC2157-14
LTC2156-14
LTC2155-14
UNITS
MIN
TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX
VDD
Analog Supply Voltage
(Note 9)
l
1.7
1.8
1.9
1.7
1.8
1.9
1.7
1.8
1.9
V
OVDD
Output Supply Voltage
(Note 9)
l
1.7
1.8
1.9
1.7
1.8
1.9
1.7
1.8
1.9
V
IVDD
Analog Supply Current
l
316
350
299
330
274
305
mA
IOVDD
Digital Supply Current
1.75mA LVDS Mode
3.5mA LVDS Mode
l
45
76
50
85
43
73
49
84
41
71
48
83
mA
PDISS
Power Dissipation
1.75mA LVDS Mode
3.5mA LVDS Mode
l
650
706
720
783
616
670
682
745
567
621
635
698
mW
PSLEEP
Sleep Mode Power
Clock Disabled
Clocked at fS(MAX)
<5
mW
PNAP
Nap Mode Power
Clocked at fS(MAX)
213
198
184
mW
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