AD8556ARZ Datasheet, PDF (1/28 Pages) Analog Devices – Digitally Programmable Sensor Signal Amplifier with EMI Filters

Digitally Programmable Sensor Signal
Amplifier with EMI Filters
AD8556
FEATURES
EMI filters at input pins
Specified from −40°C to +140°C
Low offset voltage: 10 μV maximum
Low input offset voltage drift:
65 nV/°C maximum
High CMRR: 94 dB minimum
Digitally programmable gain and output offset voltage
Programmable output clamp voltage
Open and short wire fault detection
Low-pass filtering
Single-wire serial interface
Stable with any capacitive load
SOIC_N and LFCSP_VQ packages
4.5 V to 5.5 V operation
APPLICATIONS
Automotive sensors
Pressure and position sensors
Precision current sensing
Strain gages
FUNCTIONAL BLOCK DIAGRAM
DIGIN
VCLAMP
VDD
VPOS
VNEG
LOGIC
DAC
EMI
FILTER
EMI
FILTER
EMI
FILTER
EMI
FILTER
VDD
1 _+IN
2 ^{A1 OUT}
3
R5
P4
R7
–IN
R2
VSS
P2
VDD
VDD
R3
P1
1 _+IN
2 ^{A3 OUT}
3
RF
–IN
VSS
1 _+IN
2 ^{A2 OUT}
3
R1
–IN
R4
R5
P3
VSS
AD8556
1 _+IN
2 ^{A5 OUT 3}
–IN
VSS
EMI
FILTER
VDD
1 _+IN
2 ^{A4 OUT}
3
–IN
VSS
VSS
FILT/DIGOUT
Figure 1.
V_OUT
Rev. A
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