參數(shù)資料
型號(hào): LTC2495IUHF#TR
廠商: LINEAR TECHNOLOGY CORP
元件分類: ADC
英文描述: 16-CH 16-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PQCC38
封裝: 5 X 7 MM, PLASTIC, MO-220WKHD, QFN-38
文件頁(yè)數(shù): 27/32頁(yè)
文件大小: 619K
代理商: LTC2495IUHF#TR
LTC2495
2495fa
i2c inpuTs anD DigiTal ouTpuTs The
denotes the specifications which apply over the full
operating temperature range, otherwise specifications are at TA = 25°C. (Note 3)
analog inpuT anD reFerence The
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 3)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
IN+
Absolute/Common Mode IN+ Voltage
(IN+ Corresponds to the Selected Positive Input Channel)
GND – 0.3V
VCC + 0.3V
V
IN
Absolute/Common Mode INVoltage
(INCorresponds to the Selected Negative Input Channel)
GND – 0.3V
VCC + 0.3V
V
VIN
Input Differential Voltage Range (IN+ – IN)
–FS
+FS
V
FS
Full Scale of the Differential Input (IN+ – IN)
0.5VREF/Gain
V
LSB
Least Significant Bit of the Output Code
FS/216
REF+
Absolute/Common Mode REF+ Voltage
0.1
VCC
V
REF
Absolute/Common Mode REFVoltage
GND
REF+ – 0.1V
V
VREF
Reference Voltage Range (REF+ – REF)
0.1
VCC
V
CS(IN+)
IN+ Sampling Capacitance
11
pF
CS(IN)
INSampling Capacitance
11
pF
CS(VREF)
VREF Sampling Capacitance
11
pF
IDC_LEAk(IN+)
IN+ DC Leakage Current
Sleep Mode, IN+ = GND
–10
1
10
nA
IDC_LEAk(IN–)
INDC Leakage Current
Sleep Mode, IN= GND
–10
1
10
nA
IDC_LEAk(REF+) REF+ DC Leakage Current
Sleep Mode, REF+ = VCC
–100
1
100
nA
IDC_LEAk(REF–) REFDC Leakage Current
Sleep Mode, REF= GND
–100
1
100
nA
tOPEN
MUX Break-Before-Make
50
ns
QIRR
MUX Off Isolation
VIN = 2VP-P DC to 1.8MHz
120
dB
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VIH
High Level Input Voltage
0.7VCC
V
VIL
Low Level Input Voltage
0.3VCC
V
VIHA
Low Level Input Voltage for Address Pins CA0, CA1, CA2
0.05VCC
V
VILA
High Level Input Voltage for Address Pins CA0, CA1, CA2
0.95VCC
V
RINH
Resistance from CA0, CA1, CA2 to VCC to Set Chip
Address Bit to 1
10
k
W
RINL
Resistance from CA0, CA1, CA2 to GND to Set Chip
Address Bit to 0
10
k
W
RINF
Resistance from CA0, CA1, CA2 to GND or VCC to Set
Chip Address Bit to Float
2
M
W
II
Digital Input Current (FO)
–10
10
A
VHYS
Hysteresis of Schmitt Trigger Inputs
(Note 5)
0.05VCC
V
VOL
Low Level Output Voltage (SDA)
I = 3mA
0.4
V
tOF
Output Fall Time VIH(MIN) to VIL(MAX)
Bus Load CB 10pF to
400pF (Note 14)
20 + 0.1CB
250
ns
IIN
Input Leakage (SDA/SCL)
0.1VCC ≤ VIN ≤ 0.9 VCC
1
A
CCAX
External Capacitative Load on Chip Address Pins (CA0,
CA1, CA2) for Valid Float
10
pF
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