Precision Resistor Network for
Programmable Instrumentation Amplifiers
TO RIGHT CHANNEL AMPLIFIER
FB1
OUT1
RIGHT
CHANNEL
INDIF-
VDD
OUT
CM
D1
D0
VSS
GND
FB2
TO LEFT CHANNEL AMPLIFIER
Figure 2. Stereo Audio-Taper Attenuator
OUT2
INDIF+
LEFT
CHANNEL
OUT1
FB1
tSETTLE
OUT1
FB1
FB2
OUT2
FB2
OUT2
OFFSET
tSWITCHING
tSETTLE
D1, D0
CASE 1: DIFFERENTIAL INPUT IS CHANGED, WHILE D1, D0 IS FIXED.
NOTE: SEE TIMING DIAGRAM SECTION
D1, D0
CASE 2: DIFFERENTIAL INPUT IS FIXED, WHILE D1, D0 IS CHANGED FROM 00 TO 01.
Figure 3. Timing Diagram
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