MAX1455 Maxim Integrated Products, MAX1455 Datasheet - Page 8

• Manufacturer Part Number: MAX1455
• Description: Low-Cost Automotive Sensor Signal Conditioner
• Manufacturer: Maxim Integrated Products

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Normal Operation, Continuous Refresh:
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Low-Cost Automotive Sensor Signal
Conditioner
8
Figure 2. Basic Ratiometric Output Configuration
Figure 3. Basic Nonratiometric Output Configuration
Registers ODAC and FSODAC are refreshed from
The MAX1455 has been calibrated, the Secure-
Power is applied to the device.
The POR functions have been completed.
The temperature index timer reaches a 1ms time
Registers CONFIG, OTCDAC, and FSOTCDAC are
the temperature indexed EEPROM locations.
Lock byte has been set (CL[7:0] = FFhex), and
UNLOCK is low.
period.
refreshed from EEPROM.
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SENSOR
SENSOR
4
5
3
BDR
INM
INP
MAX1455
V
V
DD1
SS
7
6
V
OUT
4
3
5
DD2
BDR
INP
INM
11
2
MAX1455
V
V
DD1
SS
7
6
V
OUT
DD2
0.47µF 0.1µF
1kΩ
11
2
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Calibration Operation, Registers Updated by Serial
Communications:
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3
Registers ODAC and FSODAC are refreshed from
the temperature indexed EEPROM locations.
The MAX1455 has not had the Secure-Lock byte set
(CL[7:0] = 00hex) or UNLOCK is high.
Power is applied to the device.
The POR functions have been completed.
The registers can then be loaded from the serial
digital interface by use of serial commands. See the
section on serial I/O and commands.
OUT
MAX1615
0.1µF
GND
2
SHDN
5/3
IN
0.1µF
1
5
4
0.1µF
GND
+5V V
OUT
0.1µF
DD
+5.5V TO +28V
GND
VPWR
OUT