MAX127ACAI(2012) Просмотр технического описания (PDF) - Maxim Integrated
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MAX127ACAI Datasheet PDF : 16 Pages
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MAX127/MAX128
Multirange, +5V, 12-Bit DAS with
2-Wire Serial Interface
Electrical Characteristics (continued)
(VDD = +5V ±5%; unipolar/bipolar range; external reference mode, VREF = 4.096V; 4.7μF at REF; external clock, fCLK = 400kHz;
TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
ANALOG INPUT
Track/Hold Acquisition Time
Small-Signal Bandwidth
Input Voltage Range
Input Current
Input Resistance
SYMBOL
-3dB
rolloff
Unipolar,
Table 3
VIN
Bipolar,
Table 3
Unipolar
IIN
Bipolar
Unipolar
ΔVIN/ΔIIN
Bipolar
CONDITIONS
MIN TYP MAX UNITS
±10V or ±VREF range
±5V or ±VREF/2 range
0 to 10V or 0 to VREF range
0 to 5V or 0 to VREF/2 range
MAX127
MAX128
MAX127
MAX128
MAX127
MAX128
MAX127
MAX128
0 to 10V range
0 to 5V range
±10V range
±5V range
±VREF range
±VREF/2 range
0
0
0
0
-10
-5
-VREF
-VREF/2
-10
-10
-10
-1200
-600
-1200
-600
5
2.5
2.5
1.25
+0.1
21
16
3
10
5
VREF
VREF/2
+10
+5
VREF
VREF/2
+720
+360
+10
+720
+360
+10
+10
µs
MHz
V
µA
kΩ
Input Capacitance
INTERNAL REFERENCE
REFOUT Voltage
REFOUT Tempco
Output Short-Circuit Current
Load Regulation (Note 5)
Capacitive Bypass at REF
REFADJ Output Voltage
REFADJ Adjustment Range
Buffer Voltage Gain
(Note 4)
VREF
TC VREF
TA = +25°C
MAX127_C/MAX128_C
MAX127_E/MAX128_E
0 to 0.5mA output current
Figure 12
40
pF
4.076
4.7
2.465
4.096
±15
±30
2.500
±1.5
1.638
4.116
V
ppm/°C
30
mA
10
mV
μF
2.535
V
%
V/V
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