On-Chip Amplifier 1.
OD
OS
RD
R
SW
Output
Node
Output
Transistor
Reset
Transistor
Summing
Well
+5V
0V
-5V
+10V
0V
R
SW
--end of
serial register
Vout
Vout
The on-chip
amplifier measures each charge packet as it pops out the end of the serial
register.
The measurement process begins with a reset
of the ‘reset node’. This removes the charge
remaining from the previous pixel. The reset
node is in fact a tiny capacitance (< 0.1pF)
RD and OD are held at
constant voltages
(The graphs
above show the signal waveforms)