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| MAX1459 Datasheet, PDF (2/24 Pages) Maxim Integrated Products – 2-Wire, 4-20mA Smart Signal Conditioner | |||
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2-Wire, 4â20mA
Smart Signal Conditioner
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, VDD to VSS......................................-0.3V to +6V
All Other Pins ...................................(VSS - 0.3V) to (VDD + 0.3V)
Short-Circuit Duration, FSOTC, OUT, BDRIVE ...........Continuous
Continuous Power Dissipation (TA = +70°C)
20-Pin SSOP (derate 8.00mW/°C above +70°C) ..........640mW
Operating Temperature Ranges
MAX1459CAP ......................................................0°C to +70°C
MAX1459AAP .................................................-40°C to +125°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+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 = 0, TA = +25°C, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
GENERAL CHARACTERISTICS
Supply Voltage
Supply Current
ANALOG INPUT (PGA)
Input Impedance
Input-Referred Offset Tempco
Amplifier Gain Nonlinearity
Output Step Response
Common-Mode Rejection Ratio
VDD
IDD
RIN
CMRR
RNBIAS = 402kâ¦, VDD = 5.0V (Note 1)
(Notes 2, 3)
63% of final value
From VSS to VDD
Input-Referred Adjustable Offset
Range
At minimum gain (Note 4)
Input-Referred Adjustable Full-
Span Output (FSO) Range
ANALOG OUTPUT (PGA)
Differential Signal Gain Range
Minimum Differential Signal Gain
Differential Signal Gain Tempco
Output Voltage Swing
(Note 5)
Selectable in eight steps
TA = TMIN to TMAX
TA = TMIN to TMAX
No load
10k⦠load
Output Current Range
VOUT = (VSS + 0.25V) to (VDD - 0.25V)
Output Noise
CURRENT SOURCE
Bridge Current Range
Bridge Voltage Swing
Reference Input Voltage Range
(ISRC)
DC to 10Hz (gain = 41,
source impedance = 5kâ¦)
IBDRIVE
VBDRIVE IBDRIVE = 2mA
VISRC
MIN
TYP MAX UNITS
4.5
5.0
5.5
V
2.0
2.5
mA
1
±0.5
0.01
2
90
±150
Mâ¦
µV/°C
%VDD
ms
dB
mV
+1 to +40
mV/V
+41 to +230
V/V
+36
+41
+44
V/V
±50
ppm/°C
VSS + 0.05
VSS + 0.25
VDD - 0.05
V
VDD - 0.25
-0.45
(sink)
0.45
(source)
mA
500
µVRMS
0.1
0.5
2.0
mA
VSS + 1.3
VDD - 1.3
V
VSS + 1.3
VDD - 1.3
V
2 _______________________________________________________________________________________
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