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MAX1294 Datasheet, PDF (3/20 Pages) Maxim Integrated Products – 420ksps, +5V, 6-/2-Channel, 12-Bit ADCs with +2.5V Reference and Parallel Interface
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420ksps, +5V, 6-/2-Channel, 12-Bit ADCs
with +2.5V Reference and Parallel Interface
ELECTRICAL CHARACTERISTICS (continued)
(VDD = +5V ±10%, COM = GND, REFADJ = VDD, VREF = +2.5V, 4.7µF capacitor at REF pin, fCLK = 7.6MHz (50% duty cycle),
TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
ANALOG INPUTS
Analog Input Voltage Range
Single-Ended and Differential
(Note 6)
SYMBOL
CONDITIONS
Unipolar, VCOM = 0
VIN
Bipolar, VCOM = VREF/2
MIN TYP MAX UNITS
0
-VREF/2
VREF
V
+VREF/2
Multiplexer Leakage Current
Input Capacitance
CIN
INTERNAL REFERENCE
REF Output Voltage
REF Short-Circuit Current
REF Temperature Coefficient
REFADJ Input Range
TCREF
REFADJ High Threshold
Load Regulation (Note 7)
Capacitive Bypass at REFADJ
Capacitive Bypass at REF
EXTERNAL REFERENCE AT REF
On/off-leakage current, VIN = 0 or VDD
For small adjustments
To power down the internal reference
0 to 0.5mA output load
REF Input Voltage Range
VREF
REF Input Current
IREF
DIGITAL INPUTS AND OUTPUTS
Input Voltage High
Input Voltage Low
Input Hysteresis
VIH
VIL
VHYS
Input Leakage Current
IIN
Input Capacitance
CIN
Output Voltage Low
VOL
Output Voltage High
VOH
Three-State Leakage Current ILEAKAGE
Three-State Output Capacitance COUT
POWER REQUIREMENTS
Analog Supply Voltage
VDD
Positive Supply Current
IIDDDD
Power-Supply Rejection
PSR
VREF = 2.5V, fSAMPLE = 420ksps
Shutdown mode
VIN = 0 or VDD
ISINK = 1.6mA
ISOURCE = 1mA
CS = VDD
CS = VDD
Operating mode,
fSAMPLE = 420ksps
Internal reference
External reference
Standby mode
Internal reference
External reference
Shutdown mode
VDD = 5V ±10%, full-scale input
±0.01 ±1
µA
12
pF
2.49
VDD - 1
4.7
2.5
15
±20
±100
0.2
0.01
2.51
V
mA
ppm/°C
mV
V
0.5 mV/mA
1
µF
10
µF
1.0
VDD +
50mV
V
200
300
µA
2
µA
4.0
V
0.8
V
200
mV
±0.1
±1
µA
15
pF
0.4
V
VDD - 0.5
V
±0.1
±1
µA
15
pF
4.5
5.5
V
2.6
2.9
2.2
2.5
mA
1.0
1.2
0.5
0.8
2
10
µA
±0.3 ±0.7 mV
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