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MAX1253 Datasheet, PDF (3/29 Pages) Maxim Integrated Products – Stand-Alone, 10-Channel, 12-Bit System Monitors with Internal Temperature Sensor and VDD Monitor
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Stand-Alone, 10-Channel, 12-Bit System Monitors
with Internal Temperature Sensor and VDD Monitor
ELECTRICAL CHARACTERISTICS (continued)
(VDD = +2.7V to +3.6V (MAX1253), VDD = +4.5V to +5.5V (MAX1254), VREF = +2.5V (MAX1253), VREF = +4.096V (MAX1254), fSCLK
= 10MHz (50% duty cycle), TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Input Leakage Current
Input Capacitance
TEMPERATURE MEASUREMENTS
On-/off-leakage, VIN = 0 or VDD
(Note 6)
±1
µA
18
pF
Internal Sensor Measurement Error
(Note 7)
External Sensor Measurement
Error (Note 8)
Grade A
MAX1253
MAX1254
Grade B
MAX1253
Grade B
MAX1254
Differential
Single ended
TA = -20°C to +85°C
TA = -40°C to +85°C
TA = +25°C
TA = -40°C to +85°C
TA = +25°C
TA = -40°C to +85°C
TA = +25°C
TA = -40°C to +85°C
TA = +25°C
TA = -40°C to +85°C
TA = +25°C
±0.5 ±1.0
±0.75 ±1.5
±0.3
±1.2 ±2.5
°C
±0.7
±1.2 ±3.0
±0.7
±2
±1
°C
±5
±2
Temperature Measurement Noise
Differentially configured inputs and internal
sensor
0.3
°C
Single-ended configured, external sensor
0.1
Temperature Resolution
0.125
°C/LSB
External Sensor Bias Current
Low
High
4
µA
66
Power-Supply Rejection
Differentially configured inputs and internal
PSR sensor
0.3
°C/V
INTERNAL REFERENCE
Single-ended configured, external sensor
0.1
REF Output Voltage
VREF
MAX1253
MAX1254
2.456 2.500 2.544
V
4.024 4.096 4.168
REF Temperature Coefficient
REF Output Resistance
REF Output Noise
Grade A
TCREF Grade B
MAX1253
MAX1254
±8
ppm/°C
±30
7
kΩ
200
µVRMS
160
REF Power-Supply Rejection Ratio
EXTERNAL REFERENCE
MAX1253
PSRR
MAX1254
-70
-50
dB
-70
-50
REF Input Voltage Range
REF Input Current
VREF
IREF
VREF = +2.5V; fSAMPLE = 94ksps
In power-down
1.0
VDD + 0.05 V
15
40
µA
±1
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