參數(shù)資料
型號(hào): MAX1499
廠商: Maxim Integrated Products, Inc.
元件分類: LED驅(qū)動(dòng)器
英文描述: 3.5- and 4.5-Digit. Single-Chip ADCs with LED Drivers and 礐 Interface
中文描述: 3位半和4位半、單片ADC,帶有LED驅(qū)動(dòng)器和µC接口
文件頁(yè)數(shù): 3/33頁(yè)
文件大?。?/td> 665K
代理商: MAX1499
M
3.5- and 4.5-Digit, Single-Chip ADCs with LED
Drivers and μC Interface
_______________________________________________________________________________________
3
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
ANALOG INPUTS (AIN+, AIN-) (bypass to GND with 0.1μF or greater capacitors)
RANGE bit = 0
RANGE bit = 1
-2.0
-0.2
+2.0
+0.2
AIN Input Voltage Range (Note 5)
AIN Absolute Input Voltage
Range to GND
-2.2
+2.2
V
Internal clock mode, 50Hz and 60Hz ±2%
100
Normal-Mode 50Hz and 60Hz
Rejection (Simultaneously)
External clock mode, 50Hz and 60Hz ±2%,
f
CLK
= 4.9152MHz
120
dB
Common-Mode 50Hz and 60Hz
Rejection (Simultaneously)
CMR
For 50Hz and 60Hz ±2%, R
SOURCE
< 10k
150
dB
Common-Mode Rejection
Input Leakage Current
Input Capacitance
Average Dynamic Input Current
LOW-BATTERY VOLTAGE MONITOR (LOWBATT) (MAX1499 only)
LOWBATT TripThreshold
LOWBATT Leakage Current
Hysteresis
INTERNAL REFERENCE (REF- = GND, INTREF bit = 1) (bypass REF+ to GND with a 4.7μF capacitor)
REF Output Voltage
V
REF
AV
DD
= V
DD
= 5V
REF Output Short-Circuit Current
CMR
At DC
100
10
10
dB
nA
pF
nA
(Note 6)
-20
+20
2.048
10
20
V
pA
mV
2.007
2.048
1
2.089
V
mA
REF Output Temperature
Coefficient
TC
VREF
AV
DD
= V
DD
= 5V
40
ppm/
°
C
Load Regulation
Line Regulation
I
SOURCE
= 0 to 300μA, I
SINK
= 0 to 30μA
6
50
25
400
mV/μA
μV/V
0.1Hz to 10Hz
10Hz to 10kHz
Noise Voltage
μV
P-P
EXTERNAL REFERENCE (INTREF bit = 0) (bypass REF+ and REF- to GND with 0.1μF or greater capacitors)
REF Input Voltage
Differential (V
REF+
- V
REF-
)
Absolute REF+, REF- Input
Voltage to GND
2.048
-2.2
+2.2
V
Internal clock mode, 50Hz and 60Hz ±2%
100
Normal-Mode 50Hz and 60Hz
Rejection (Simultaneously)
External clock mode, 50Hz and 60Hz ±2%,
f
CLK
= 4.9152MHz
120
dB
Common-Mode 50Hz and 60Hz
Rejection (Simultaneously)
CMR
For 50Hz and 60Hz ±2%, R
SOURCE
< 10k
150
dB
Common-Mode Rejection
Input Leakage Current
CMR
At DC
100
10
dB
nA
ELECTRICAL CHARACTERISTICS (continued)
(AV
DD
= DV
DD
= V
DD
= +2.7V to +5.25V, GND = 0, GLED = 0, V
LED
= +2.7V to +5.25V, V
REF+
- V
REF-
= 2.048V (external reference)
C
REF+
= C
REF-
= 0.1μF, C
VNEG
= 0.1μF. Internal clock mode, unless otherwise noted. All specifications are at T
A
= T
MIN
to T
MAX
.
Typical values are at T
A
= +25°C, unless otherwise noted.)
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