|
|
PDF MAX1454 Data sheet ( Hoja de datos )
| Número de pieza | MAX1454 | |
| Descripción | Precision Sensor Signal Conditioner | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de MAX1454 (archivo pdf) en la parte inferior de esta página. Total 25 Páginas | ||
|
No Preview Available !
19-5945 Rev 0; 6/11
EVALUATION KIT AVAILABLE
MAX1454
Precision Sensor Signal Conditioner
with Overvoltage Protection
General Description
The MAX1454 is a highly integrated analog sensor
signal conditioner targeted for automotive applications.
The device provides amplification, calibration, and tem-
perature compensation to enable an overall performance
approaching the inherent repeatability of the sensor. The
fully analog signal path introduces no quantization noise
in the output signal while enabling digitally controlled
trimming of the output. Offset and span are calibrated
with integrated 16-bit DACs, allowing sensors to be truly
interchangeable.
The device architecture includes a programmable sen-
sor excitation, a 32-step programmable-gain amplifier
(PGA), a 2K x 8 bits internal flash memory, four 16-bit
DACs, and an on-chip temperature sensor. In addition
to offset and span compensation, the device provides a
unique temperature-compensation method for offset TC
and FSO TC to provide a remarkable degree of flexibility
while minimizing manufacturing costs.
The device is packaged in a 16-pin TSSOP and covers
the automotive AEC-Q100 Grade 1 temperature range of
-40NC to +125NC.
Applications
Pressure Sensors
Strain Gauges
Pressure Calibrators and Controllers
Resistive Element Sensors
Humidity Sensors
Benefits and Features
S Complete Signal Conditioning in a Single IC
Package
Provides Amplification, Calibration, and
Temperature Compensation
Accommodates Sensor Output Sensitivities
from 1mV/V to 200mV/V
Overvoltage Protection to 45V
Reverse-Voltage Protection to 45V
S High-Precision Compensation Reduces
Downstream Circuit Complexity
Fully Analog Signal Path
16-Bit Offset and Span-Calibration Resolution
On-Chip Lookup Table Supports Multipoint
Calibration Temperature Correction
S Supports Both Current and Voltage-Bridge
Excitation
S Fast 85µs Step Response
S Sensor Fault Detection
S Simple PCB Layout
S Single-Pin Digital Programming
S No External Trim Components Required
Ordering Information appears at end of data sheet.
For related parts and recommended products to use with this part,
refer to www.maxim-ic.com/MAX1454.related.
����������������������������������������������������������������� Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
1 page  
MAX1454
Precision Sensor Signal Conditioner
with Overvoltage Protection
ELECTRICAL CHARACTERISTICS (continued)
(VDDX = 5V, VGND = 0V, TA = +25NC, unless otherwise noted.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
Operating Current
(Note 4)
Program/Erase Current
(Note 4)
TEMPERATURE-TO-DIGITAL CONVERTER
Temperature ADC Resolution
Offset
Gain
Nonlinearity
Lowest Digital Output
Highest Digital Output
DIGITAL INPUT (OUT/DIO)
Input Low Voltage
VIL
Input High Voltage
VIH
OVERVOLTAGE PROTECTION
Overvoltage-Protection
Threshold
FAULT DETECTION
IN+/IN- Low Comparator
Threshold
IN+/IN- High Comparator
Threshold
Detection-Threshold Accuracy
Comparator Hysteresis
Output Clip Level During Fault
Conditions
IOUT = 1mA sinking
MIN TYP MAX UNITS
8 mA
7 mA
8
Q3
1.5
Q0.5
0x00
0xAF
Bits
LSB
NC/Bit
LSB
hex
hex
0
VDDX x
2/3
VDDX/3
VDDX
V
V
5.53 5.75
6.0
V
0.2 x
VBDR
0.8 x
VBDR
Q25
20
150
250
V
V
mV
mV
mV
Note 2: All units are production tested at TA = +25NC and +125NC. Specifications over temperature are guaranteed by design.
Note 3: Excludes sensor or load current. Analog mode with voltage excitation on BDR pin, FSODAC = 0x8000.
Note 4: Specification is guaranteed by design.
Note 5: All electronics temperature errors are compensated together with sensor errors.
Note 6: The sensor and the device must be at the same temperature during calibration and use.
Note 7: This is the maximum allowable sensor offset.
Note 8: This is the sensor’s sensitivity normalized to its drive voltage, assuming a desired full-span output of VDDX - 1V and a
nominal bridge voltage of VDDX/2.
Note 9: Bit weight is ratiometric to VDDX.
Note 10: Programming of the flash memory at room temperature is recommended.
Note 11: No commands can be executed until the erase operation has completed. During erase operations, all commands sent to
the device are ignored.
����������������������������������������������������������������� Maxim Integrated Products 5
5 Page 
MAX1454
Precision Sensor Signal Conditioner
with Overvoltage Protection
Table 1. Flash Memory Address Map
PAGE
0
1
2
3
LOW-BYTE
ADDRESS (hex)
000
002
:
15C
15E
160
162
164
166
168
16A
16C
16E
:
17E
180
:
1FE
200
202
:
35C
35E
360
:
37E
380
:
3FE
400
402
:
5FE
600
:
7FE
HIGH-BYTE
ADDRESS (hex)
001
003
:
15D
15F
161
163
165
167
169
16B
16D
16F
:
17F
181
:
1FF
201
203
:
35D
35F
361
:
37F
381
:
3FF
401
403
:
5FF
601
:
7FF
TEMPINDEX[7:0]
(hex)
00
01
:
AE
AF to FF
—
—
—
—
—
—
—
—
—
00
01
:
AE
AF to FF
—
—
—
—
*Do not change values stored at locations 0x400 and 0x401 from the factory defaults.
CONTENTS
ODAC lookup table
CONFIG1
CONFIG2
Reserved
OTCDAC
Reserved
FSOTCDAC
PWRUPCFG
Reserved
128 general-purpose user bytes
FSODAC lookup table
Reserved
128 general-purpose user bytes
Reserved*
Reserved
Reserved
���������������������������������������������������������������� Maxim Integrated Products 11
11 Page | ||
| Páginas | Total 25 Páginas | |
| PDF Descargar | [ Datasheet MAX1454.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| MAX145 | 0.1%-Accurate Signal Conditioner for Piezoresistive Sensor Compensation | Maxim Integrated |
| MAX1450 | 1%-Accurate Signal Conditioner | Maxim Integrated |
| MAX14500 | (MAX14500 - MAX14503) Hi-Speed USB-to-SD Card Readers |  Maxim Integrated Products |
| MAX14501 | (MAX14500 - MAX14503) Hi-Speed USB-to-SD Card Readers | Maxim Integrated Products |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |