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| MAX1246_07 Datasheet, PDF (5/25 Pages) Maxim Integrated Products – 2.7V, Low-Power, 4-Channel, Serial 12-Bit ADCs in QSOP-16 | |||
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+2.7V, Low-Power, 4-Channel,
Serial 12-Bit ADCs in QSOP-16
ELECTRICAL CHARACTERISTICS (continued)
(VDD = +2.7V to +3.6V (MAX1246); VDD = +2.7V to +5.25V (MAX1247); COM = 0V; fSCLK = 2.0MHz; external clock (50% duty cycle);
15 clocks/conversion cycle (133ksps); MAX1246â4.7µF capacitor at VREF pin; MAX1247âexternal reference, VREF = 2.5V applied
to VREF pin; TA = TMIN to TMAX; unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
DIGITAL INPUTS (DIN, SCLK, CS, SHDN)
DIN, SCLK, CS Input High Voltage
DIN, SCLK, CS Input Low Voltage
DIN, SCLK, CS Input Hysteresis
DIN, SCLK, CS Input Leakage
DIN, SCLK, CS Input Capacitance
SHDN Input High Voltage
SHDN Input Mid Voltage
SHDN Input Low Voltage
SHDN Input Current
SHDN Voltage, Floating
VIH
VIL
VHYST
IIN
CIN
VSH
VSM
VSL
IS
VFLT
VDD ⤠3.6V
VDD > 3.6V, MAX1247 only
VIN = 0V or VDD
(Note 7)
SHDN = 0V or VDD
SHDN = FLOAT
SHDN Maximum Allowed
Leakage, Mid Input
SHDN = FLOAT
MIN TYP MAX UNITS
2.0
V
3.0
0.8
V
0.2
V
±0.01 ±1
µA
15
pF
VDD - 0.4
V
1.1
VDD - 1.1
V
0.4
V
±4.0 µA
VDD / 2
V
±100 nA
DIGITAL OUTPUTS (DOUT, SSTRB)
Output Voltage Low
VOL
ISINK = 5mA
ISINK = 16mA
0.4
V
0.8
Output Voltage High
Three-State Leakage Current
Three-State Output Capacitance
POWER REQUIREMENTS
VOH
IL
COUT
ISOURCE = 0.5mA
CS = VDD
CS = VDD (Note 7)
VDD - 0.5
V
±0.01 ±10 µA
15
pF
Positive Supply Voltage
MAX1246
VDD
MAX1247
2.70
3.60
V
2.70
5.25
Operating mode, full-scale input
1.2
2.0 mA
Positive Supply Current, MAX1246 IDD VDD = 3.6V Fast power-down
Full power-down
30
70
µA
1.2
10
Operating mode,
full-scale input
VDD = 5.25V
VDD = 3.6V
1.8
2.5
mA
0.9
1.5
Positive Supply Current, MAX1247 IDD Fast power-down
30
70
Full power-down
VDD = 5.25V
VDD = 3.6V
3.5
15
µA
1.2
10
Supply Rejection (Note 10)
PSR
VDD = 2.7V to VDD(MAX), full-scale input,
external reference = 2.500V
±0.3
mV
_______________________________________________________________________________________ 5
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