
MAX1098/MAX1099
10-Bit Serial-Output Temperature Sensors
with 5-Channel ADC
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3
ELECTRICAL CHARACTERISTICS (continued)
(VDD = +4.75V to +5.25V (MAX1098), VDD = +2.7V to +3.6V (MAX1099), external reference, VREF = +2.5V (MAX1098), VREF = +1.2V
(MAX1099), fSCLK = 2.5MHz, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
DIGITAL INPUTS
Input Voltage Low
VIL
0.8
V
Input Voltage High
VIH
VDD - 0.8
V
Input Hysteresis
VHYST
0.2
V
Input Leakage Current
IIN
1
A
Input Capacitance
16
pF
DIGITAL OUTPUTS
V
Output Low Voltage
VOL
ISINK = 5mA
0.6
V
Output High Voltage
VOH
ISOURCE = 0.5mA
VDD - 0.6
V
Three-State Output Leakage
Current
IOUT
±10
A
Three-State Output
Capacitance
15
pF
POWER REQUIREMENTS
MAX1098
4.75
5.25
Positive Supply Voltage
VDD
MAX1099
2.7
3.6
V
MAX1098
390
Full-on, voltage measurements,
internal reference
MAX1099
350
MAX1098
310
Full-on, voltage measurements,
external reference
MAX1099
280
MAX1098
440
500
Full-on, temperature measurements,
internal reference
MAX1099
400
500
MAX1098
360
Full-on, temperature measurements,
external reference
MAX1099
330
Standby, SCLK = GND
120
Standby-plus, SCLK = GND
190
Positive Supply Current
(Note 6)
IDD
Shutdown, SCLK = GND
2
10
A
Power-Supply Rejection
PSRR
(Note 7)
50
65
dB
INTERNAL VOLTAGE REFERENCE CHARACTERISTICS
VDD = 5V
MAX1098
2.494
2.50
2.506
Reference Voltage
VREF
VDD = 3V
MAX1099
1.197
1.20
1.203
V
Reference Tempco
TC VREF
±20
ppm/
°C
Output Short-Circuit Current
1.25
mA
Capacitive Bypass at REF
0.1
F
MAX1098
130
REF Output Noise
fN = 10Hz to 10kHz
MAX1099
65
VRMS
MAX1098
+3.0
REF Line Regulation
MAX1099
+0.2
mV/V
MAX1098
4
10
REF Load Regulation
0 to 100
A output current
(Note 8)
MAX1099
2
10
V/A