MAX1459 Datasheet, PDF (3/24 Pages) Maxim Integrated Products – 2-Wire, 4-20mA Smart Signal Conditioner

2-Wire, 4–20mA
Smart Signal Conditioner
ELECTRICAL CHARACTERISTICS (continued)
(V_DD = +5V, V_SS = 0, T_A = +25°C, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
DIGITAL-TO-ANALOG CONVERTERS
DAC Resolution
Differential Nonlinearity
DNL
Offset DAC Bit Weight
∆V_OUT
∆Code
DAC reference = V_DD = 5.0V
Offset TC DAC Bit Weight
∆V_OUT
∆Code
DAC reference = V_BDRIVE = 2.5V
FSO DAC Bit Weight
∆V_ISRC
∆Code
DAC reference = V_DD = 5.0V
FSOTC DAC Bit Weight
∆V_FSOT
∆Code
DAC reference = V_BDRIVE = 2.5V
IRO DAC
DAC Resolution
DAC Bit Weight
FSOTC BUFFER (FSOTC Pin)
Output Voltage Swing
Current Drive
INTERNAL RESISTORS
Input referred, V_DD = 5V (Note 6)
No load, V_B = 5V
V_FSOTC = 2.5V
Current Source Reference
Resistor
R_ISRC
FSO Trim Resistor
Temperature-Dependent
Resistor
R_FTC
R_TEMP
AUXILIARY OP AMP
Input Common-Mode Range
Open-Loop Gain
Offset Voltage (as unity-gain
follower)
CMR
A_V
V_IN = V_DD/2
Output Swing
Output Current
No load
MIN
TYP MAX UNITS
12
±1.5
2.8
Bits
LSB
mV/bit
1.4
mV/bit
1.22
mV/bit
0.6
mV/bit
3
Bits
9
mV/bit
0.2
4.0
V
-20
20
µA
100
kΩ
100
kΩ
100
kΩ
V_SS
V_DD
V
60
dB
-30
30
mV
V_SS + 0.05
V_{DD -} 0.05
V
±1
mA
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