Datasheet
Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted.)
MAX1454
Precision Sensor Signal Conditioner
with Overvoltage Protection
6Maxim Integrated
Typical Operating Characteristics
(V
DD
= 5V, T
A
= +25NC, unless otherwise noted.)
OUTPUT NOISE
MAX1454 toc01
TIME (ms)
OUT/DIO (mV)
400300100 200
-15
-10
-5
0
10
5
15
20
V
IN+
= V
IN-
= GND, C = 10nF, NO LOAD
36V/V GAIN SETTTING
-20
0 500
16-BIT DAC DIFFERENTIAL
NONLINEARITY
MAX1454 toc02
16-BIT DAC CODE
DNL (LSB)
49,15232,76816,384
-8
-6
-4
-2
0
2
4
6
8
10
-10
0 65,536
IRO DAC DIFFERENTIAL NONLINEARITY
MAX1454 toc03
IRO DAC CODE
DNL (LSB)
105
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
PGA GAIN = 44V/V
-0.5
01
5
SIGNAL-PATH NONLINEARITY
MAX1454 toc04
OUT/DIO VOLTAGE (V)
ERROR (%SPAN)
3.52.515
-0.08
-0.06
-0.04
-0.02
0
0.02
0.04
0.06
0.08
0.10
SPAN = 4V
256V/V
6V/V
-0.10
0 4.5
1024V/V
44V/V
STEP RESPONSE
(VARIOUS GAIN SETTINGS)
MAX1454 toc07
OUT/DIO
1V/div
1kHz
SQUARE
WAVE
100µs/div
256V/V, 1024V/V
44V/V
6V/V
SIGNAL-PATH GAIN DEVIATION
vs. TEMPERATURE
MAX1454 toc05
TEMPERATURE (°C)
GAIN ERROR RELATIVE TO 25°C (% )
1007525 500-25
-0.40
-0.30
-0.20
-0.10
0
0.10
0.20
0.30
0.40
0.50
-0.50
-50 125
256V/V
6V/V
44V/V
1024V/V
OUTPUT VOLTAGE vs. INPUT
SIGNAL FREQUENCY
MAX1454 toc06
INPUT SIGNAL FREQUENCY (Hz)
NORMALIZED OUTPUT VOLTAGE (dB)
1k
-12
-9
-6
-3
0
3
-15
100 10k
OUTPUT VOLTAGES NORMALIZED TO DC
20mV
P-P
SINE-WAVE INPUT SIGNAL,
PGA GAIN = 52V/V, 112V/V, 208V/V
OUTPUT VOLTAGE vs. INPUT VOLTAGE
(FAULT DETECTION ENABLED)
MAX1454 toc08
V
IN+
= V
IN-
(V)
OUTPUT VOLTAGE (V)
2.01.50.5 1.0
0.5
1.0
1.5
2.0
3.0
2.5
OUTPUT CLIP LEVEL
3.5
4.0
0
0 2.5
V
BDR
= 2.5V,
OUTPUT PROGRAMMED TO 2.5V