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| MAX1457 Datasheet, PDF (2/12 Pages) Maxim Integrated Products – 0.1%-Accurate Signal Conditioner for Piezoresistive Sensor Compensation | |||
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0.1%-Accurate Signal Conditioner
for Piezoresistive Sensor Compensation
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, VDD to VSS......................................-0.3V to +6V
All other pins ....................................(VSS - 0.3V) to (VDD + 0.3V)
Continuous Power Dissipation (TA = +70°C)
28-Pin Wide SO (derate 12.50mW/°C above +70°C) ..........1W
32-Pin TQFP (derate 11.1mW/°C above +70°C)...........889mW
Operating Temperature Ranges
MAX1457C_ _ ......................................................0°C to +70°C
MAX1457A_ _ .................................................-40°C to +125°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10sec) .............................+300°C
Stresses beyond those listed under âAbsolute Maximum Ratingsâ may cause permanent damage to the device. These are stress ratings only, and functional
operation 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.
ELECTRICAL CHARACTERISTICS
(VDD = +5V, VSS = 0V, TA = +25°C, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
GENERAL CHARACTERISTICS
Supply Voltage
Supply Current
VDD
IDD
RBIAS = 400kâ¦, fCLK = 100kHz (Note 1)
ANALOG INPUT (PGA)
Input Impedance
RIN
Input-Referred Offset Tempco
(Notes 2, 3)
Amplifier Gain Nonlinearity
Output Step-Response Time
Common-Mode Rejection Ratio
CMRR
fCLK = 100kHz, to 63% of final value
From VSS to VDD
Input-Referred Adjustable
Offset Range
(Note 4)
MIN TYP MAX UNITS
4.5
5
5.5
V
2.0
2.6
mA
1
Mâ¦
1
Mâ¦
±0.5
µV/°C
0.01
%VDD
1
ms
90
dB
±100
mV
Input-Referred Adjustable
Full-Span Output Range
(Note 5)
5 to 30
mV/V
ANALOG OUTPUT (PGA)
Differential Signal Gain Range
Minimum Differential Signal Gain
Differential Signal Gain Tempco
Output Voltage Swing
Output Current Range
TA = TMIN to TMAX
5k⦠load to VSS or VDD
No load
VOUT = (VSS + 0.25V) to (VDD - 0.25V)
54 to 306
V/V
49
54
60
V/V
±50
ppm/°C
VSS + 0.25
VDD - 0.25
V
VSS + 0.02
VDD - 0.02
-1.0
(sink)
1.0
(source)
mA
Output Noise
Gain = 54, DC to 10Hz, sensor impedance =
5kâ¦, full-span output = 4V
0.0025
%FSO
CURRENT SOURCE
Bridge Current Range
Bridge Voltage Swing
Current-Source Reference Input
Voltage Range
IBR
VBR
VISRC
0.1
0.5
2.0
mA
VSS + 1.3
VDD - 1.3 V
VSS + 1.3
VDD - 1.3 V
DIGITAL-TO-ANALOG CONVERTERS
DAC Voltage Resolution
Differential Nonlinearity
DAC Resolution
Reference voltage = 5.000V
Output filter capacitor = 0.1µF, fCLK = 100kHz
200
µV
2
LSB
16
Bits
2 _______________________________________________________________________________________
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