參數(shù)資料
型號: MAX1273
廠商: Maxim Integrated Products, Inc.
元件分類: ADC
英文描述: Fault-Protected. 12-Bit ADCs with Software-Selectable Input Range
中文描述: 帶故障保護(hù)的12位ADC,具有軟件可選的輸入范圍
文件頁數(shù): 4/20頁
文件大?。?/td> 850K
代理商: MAX1273
M
Fault-Protected, 12-Bit ADCs
with Software-Selectable Input Range
4
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= 4.75V to 5.25V, unipolar/bipolar input range, external reference mode, V
REF
= 4.096V, C
REF
= 1.0μF, f
SCLK
= 1.4MHz,
50% duty cycle, C
LOAD
= 50pF, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25
°
C.)
PARAMETERS
SYMBOL
CONDITIONS
Converting
Standby power-down
mode
Full power-down mode
MIN
TYP
400
MAX
850
UNITS
5
10
Input Current
V
REF
= 4.096V
1
μA
POWER REQUIREMENTS
Supply Voltage
V
DD
4.75
5
5.25
4
3
700
V
Bipolar
Unipolar
2.4
2.2
400
1
1.5
1.2
200
1
Converting
mA
Standby power-down mode
Full power-down mode
Supply Current
(Internal Reference Mode)
I
DD
μA
Bipolar
Unipolar
2.5
2.0
450
Converting
mA
Standby power-down mode
Full power-down mode
External reference = 4.096V
Internal reference
Supply Current
(External Reference Mode)
I
DD
μA
±0.3
±
1.0
Power-Supply Rejection
Ratio (Note 3)
TIMING
Clock Frequency Range
T/H Acquisition Time
Conversion Time
Throughput Rate
Internal Reference Settling Time
Device Power-Up Time
DIGITAL INPUTS (DIN, SCLK, and
CS
)
Input High-Threshold Voltage
Input Low-Threshold Voltage
Input Hysteresis
Input Leakage Current
Input Capacitance
DIGITAL OUTPUT (DOUT)
PSRR
±
0.5
LSB
f
SCLK
t
ACQ
t
CONV
0.1
2.85
8.57
1.4
MHz
μs
μs
ksps
ms
μs
(Note 4)
(Note 4)
87.5
REF bypass capacitor initially discharged
External reference mode
2
10
V
IH
V
IL
V
HYS
I
IN
C
IN
2.4
V
V
V
μA
pF
0.8
0.2
V
IN
= 0 to V
DD
-10
+10
15
I
SINK
= 10mA
I
SINK
= 16mA
0.4
Output Voltage Low
V
OL
0.6
V
Output Voltage High
V
OH
I
SOURCE
= 0.5mA
V
DD
- 0.5
V
Three-State Leakage Current
Three-State Output Capacitance
I
L
CS
= V
DD
CS
= V
DD
-10
+10
μA
pF
C
OUT
15
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