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MAX1091 Datasheet, PDF (3/20 Pages) Maxim Integrated Products – 250ksps, +3V, 8-/4-Channel, 10-Bit ADCs with +2.5V Reference and Parallel Interface
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250ksps, +3V, 8-/4-Channel, 10-Bit ADCs
with +2.5V Reference and Parallel Interface
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.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
ANALOG INPUTS
Analog Input Voltage Range
Single-Ended and Differential
(Note 6)
Unipolar, VCOM = 0
VIN
Bipolar, VCOM = VREF / 2
0
-VREF/2
VREF
V
+VREF/2
Multiplexer Leakage Current
On/off-leakage current, VIN = 0 or VDD
±0.01 ±1
µA
Input Capacitance
CIN
INTERNAL REFERENCE
12
pF
REF Output Voltage
2.49
2.5
2.51
V
REF Short-Circuit Current
15
mA
REF Temperature Coefficient
REFADJ Input Range
TCREF
TA = 0°C to +70°C
For small adjustments
±20
±100
ppm/°C
mV
REFADJ High Threshold
Load Regulation (Note 7)
To power down the internal reference
0 to 0.5mA output load
VDD - 1.0
0.2
V
mV/mA
Capacitive Bypass at REFADJ
0.01
1
µF
Capacitive Bypass at REF
4.7
10
µF
EXTERNAL REFERENCE AT REF
REF Input Voltage Range
VREF
1.0
VDD +
50mV
V
REF Input Current
IREF
VREF = 2.5V, fSAMPLE = 250ksps
Shutdown mode
200
300
µA
2
DIGITAL INPUTS AND OUTPUTS
Input High Voltage
VIH
Input Low Voltage
VIL
Input Hysteresis
VHYS
Input Leakage Current
IIN
Input Capacitance
CIN
Output Low Voltage
VOL
Output High Voltage
VOH
Three-State Leakage Current ILEAKAGE
Three-State Output Capacitance COUT
VLOGIC = 2.7V
VLOGIC = 1.8V
VLOGIC = 2.7V
VLOGIC = 1.8V
VIN = 0 or VDD
ISINK = 1.6mA
ISOURCE = 1mA
CS = VDD
CS = VDD
2.0
V
1.5
0.8
V
0.5
200
mV
±0.1
±1
µA
15
pF
0.4
V
VLOGIC - 0.5
V
±0.1
±1
µA
15
pF
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