Datasheet
MAX1454
Precision Sensor Signal Conditioner
with Overvoltage Protection
2Maxim Integrated
(Voltages referenced to GND.)
V
DD
, V
DDF
............................................................-0.3V to +3.0V
V
DDX
....................................................................... -45V to +45V
All Other Pins
............................. -0.3V to Min (V
DDX
+ 0.3V, 6V)
Continuous Power Dissipation (T
A
= +70NC)
16-Pin TSSOP (derate 11.1mW/NC above +70NC)
...888.9mW
Operating Temperature Range
........................ -40NC to +125NC
Junction Temperature
.....................................................+150NC
Storage Temperature Range
............................ -65NC to +150NC
Lead Temperature (soldering, 10s)
.............................. +300NC
Soldering Temperature (reflow)
......................................+260NC
TSSOP
Junction-to-Ambient Thermal Resistance (q
JA
) ..........90NC/W
Junction-to-Case Thermal Resistance (q
JC
) ...............27NC/W
ABSOLUTE MAXIMUM RATINGS
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-
layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional opera-
tion of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
PACKAGE THERMAL CHARACTERISTICS (Note 1)
ELECTRICAL CHARACTERISTICS
(V
DDX
= 5V, V
GND
= 0V, T
A
= +25NC, unless otherwise noted.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
GENERAL CHARACTERISTICS
External Supply Voltage V
DDX
3.0 5.0 5.5 V
External Supply Current I
DDX
(Note 3) 2.5 3 mA
Oscillator Frequency f
OSC
0.85 1 1.15 MHz
LDO Regulator Output Voltage V
DD
Not to be loaded by external circuitry, must
be connected to a 0.1FF capacitor to GND
2.375 2.5 2.625 V
Power-On-Reset Threshold V
POR
Referred to V
DDX
pin 2.4 V
External Supply Voltage-Ramp
Rate
(Note 4) 1 V/ms
ANALOG INPUT
Input Impedance R
IN
1
MI
Input-Referred Offset-
Temperature Coefficient
(Notes 5, 6)
Q1 FV/NC
Input-Referred Adjustable-
Offset Range
Offset TC = 0 at gain = 44 (Note 7) -150 +150 mV
Nonlinearity of Signal Path
Percent of 4V span, no load, IRO[3:0] =
0000bin, source impedance = 5kI, V
OUT
= 0.5V to 4.5V; measured at V
OUT
= [0.5V,
2.5V, 4.5V] at a gain of 112
0.01 %
Common-Mode Rejection
Ratio
CMRR
Specified for common-mode voltages
between GND and V
DDX
90 dB
Input-Referred Adjustable FSO (Note 8) 1 200 mV/V