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MAX1291 Datasheet(Fiches technique) 3 Page - Maxim Integrated Products

Numéro de pièce MAX1291
Description  250ksps, 3V, 8-/4-Channel, 12-Bit ADCs with 2.5V Reference and Parallel Interface
Télécharger  20 Pages
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Fabricant  MAXIM [Maxim Integrated Products]
Site Internet  http://www.maxim-ic.com
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 3 page
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250ksps, +3V, 8-/4-Channel, 12-Bit ADCs
with +2.5V Reference and Parallel Interface
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(VDD = VLOGIC = +2.7V to +3.6V, COM = GND, REFADJ = VDD, VREF = +2.5V, 4.7µF capacitor at REF pin, fCLK = 4.8MHz (50% duty
cycle); TA = TMIN to TMAX unless otherwise noted. Typical values are at TA = +25°C.)
CONDITIONS
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
0 to 0.5mA output load
To power down the internal reference
For small adjustments
TA = 0°C to +70°C
On/off-leakage current, VIN = 0 or VDD
Unipolar, VCOM = 0
V
1.0
VDD +
50mV
VREF
REF Input Voltage Range
µF
4.7
10
Capacitive Bypass at REF
µF
0.01
1
Capacitive Bypass at REFADJ
mV/mA
0.2
0.5
Load Regulation (Note 7)
V
VDD - 1.0
REFADJ High Threshold
mV
±100
REFADJ Input Range
±20
ppm/°C
TCREF
REF Temperature Coefficient
mA
15
REF Short-Circuit Current
V
2.49
2.5
2.51
REF Output Voltage
pF
12
CIN
Input Capacitance
µA
±0.01
±1
Multiplexer Leakage Current
V
Analog Input Voltage Range
Single-Ended and Differential
(Note 6)
0VREF
VIN
CS = VDD
ISOURCE = 1mA
ISINK = 1.6mA
VIN = 0 or VDD
VLOGIC = 2.7V
µA
±0.1
±1
ILEAKAGE
Three-State Leakage Current
V
VLOGIC - 0.5
VOH
Output High Voltage
V
0.4
VOL
Output Low Voltage
pF
15
CIN
Input Capacitance
µA
±0.1
±1
IIN
Input Leakage Current
mV
200
VHYS
Input Hysteresis
2.0
CS = VDD
pF
15
COUT
Three-State Output Capacitance
Bipolar, VCOM = VREF/2
-VREF/2
+VREF/2
VREF = 2.5V, fSAMPLE = 250ksps
µA
200
300
IREF
REF Input Current
Shutdown mode
2
VLOGIC = 1.8V
V
1.5
VIH
Input High Voltage
VLOGIC = 1.8V
V
0.5
VIL
Input Low Voltage
VLOGIC = 2.7V
0.8
ANALOG INPUTS
INTERNAL REFERENCE
EXTERNAL REFERENCE AT REF
DIGITAL INPUTS AND OUTPUTS




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