MAX1253 Datasheet, PDF (8/29 Pages) Maxim Integrated Products – Stand-Alone, 10-Channel, 12-Bit System Monitors with Internal Temperature Sensor and VDD Monitor

Stand-Alone, 10-Channel, 12-Bit System Monitors
with Internal Temperature Sensor and V_DD Monitor
Typical Operating Characteristics (continued)
(V_DD = +3V, V_REF = 2.5V (MAX1253); V_DD = 5V, V_REF = 4.096V (MAX1254); f_SCLK = 10MHz, C_REF = 0.1µF, T_A = +25°C, unless oth-
erwise noted.)
EXTERNAL TEMPERATURE SENSOR
TEMPERATURE ERROR
2.0
MAX1253/MAX1254
1.6
1.2
EXTERNAL SENSOR,
0.8
DIFFERENTIAL INPUT
0.4
0
-0.4
-0.8
-1.2 _{EXTERNAL SENSOR,}
-1.6 SINGLE-ENDED INPUT
-2.0
-40 -20 0 20 40 60 80
TEMPERATURE (°C)
SAMPLING ERROR
vs. INPUT SOURCE IMPEDANCE
1
0
-1
-2
-3
-4
-5
10
100
1000
SOURCE IMPEDANCE (Ω)
10,000
TEMPERATURE ERROR vs. INTERCONNECT
CAPACITANCE (EXTERNAL SENSOR)
1
0
-1
-2
-3
-4
EXTERNAL DIODE
-5 DIFFERENTIAL TEMPERATURE
MEASUREMENT MODE
-6
1
10
100
1000
INTERCONNECT CAPACITANCE (pF)
TURN ON THERMAL TRANSIENT,
CONTINUOUS CONVERSION
V_DD = 3.0V
0.625
IN A TSSOP SOCKET
0.500
0.375
SOLDER ON A 2in ✕ 2in PWB
0.250
0.125
0
-0.125
0
IN AN OIL BATH
EXTERNAL BJT
5 10 15 20 25 30
TIME (s)
8 _______________________________________________________________________________________