MAX1454_11 Datasheet, PDF (3/25 Pages) Maxim Integrated Products – Precision Sensor Signal Conditioner with Overvoltage Protection

MAX1454
Precision Sensor Signal Conditioner
with Overvoltage Protection
ELECTRICAL CHARACTERISTICS (continued)
(V_DDX = 5V, V_GND = 0V, T_A = +25NC, unless otherwise noted.) (Note 2)
PARAMETER
ANALOG OUTPUT
Differential Signal Gain
SYMBOL
CONDITIONS
Selectable in 32 steps
PGA[4:0] = 00000bin
PGA[4:0] = 00101bin
PGA[4:0] = 01010bin
PGA[4:0] = 01100bin
PGA[4:0] = 01101bin
PGA[4:0] = 01110bin
PGA[4:0] = 01111bin
PGA[4:0] = 10000bin
PGA[4:0] = 10110bin
PGA[4:0] = 11100bin
PGA[4:0] = 11111bin
MIN TYP MAX
6 to 2048
5.5
6
6.5
12.5
14
15.5
40
44
48
58
64
70
72
80
88
86
96
106
101 112 123
130 144 158
374 416 458
1037 1152 1267
1823 2048 2253
Output-Voltage Swing
No load
V_GND +
0.02
V_DDX -
0.32
Output-Voltage Low
Output-Voltage High
I_OUT = 1mA sinking, T_A = T_MIN to T_MAX
I_OUT = 1mA sourcing, T_A = T_MIN to T_MAX
V_DDX -
0.55
0.25
Output Current Drive
Capability
Maintain DC output to 2mV error compared
to no load case (Note 4)
Q1
Output Source Current Limit
Output Sink Current Limit
Output Impedance at DC
Output Offset Ratio
DV_OUT/
DOffset DAC
V_OUT = 2.5V
8
-8
0.2
0.9
1.2
Output Offset TC Ratio
DV_OUT/
DOffset TC DAC
0.9
1.2
Step Response
(63% Final Value)
85
Maximum Capacitive Load
0.01
Gain = 36
0.5
Noise at Output Pin
Gain = 256
1.5
DC to 1kHz, source
impedance = 5kI
Gain = 512
3
Gain = 1024
6
Gain = 2048
12
UNITS
V/V
V
V
V
mA
mA
mA
I
V/V
V/V
Fs
FF
mV_RMS
����������������������������������������������������������������� Maxim Integrated Products   3