AN231E04 Datasheet, PDF (11/24 Pages) List of Unclassifed Manufacturers – Dynamically Reconfigurable dpASP

AN231E04 Datasheet – Dynamically Reconfigurable dpASP
effective output impedance. The
OpAmp is designed to drive all
internal nodes,
Output Load, External
Rload
1
-
-
Kohm
Output Load, External
Cload
-
-
100
pF
Noise Figure
NF
-
0.16
-
µV/√Hz Unity gain mode.
Signal-To Noise Ratio and
Distortion
SINAD
-
97
-
dB
Unity gain mode.
Spurious Free Dynamic Range
SFDR
-
96
-
dB
Unity gain mode.
1.5.3 IO Cell, Sample and Hold Mode
Parameter
Input Range
Equivalent Input Offset Voltage
Offset Voltage Temperature
Coefficient
Input Frequency
Power Supply Rejection Ratio
Common Mode Rejection Ratio
Input Resistance
Input Capacitance
Input Referred Noise Figure
Signal-to Noise Ratio and
Distortion
Spurious Free Dynamic Range
Symbol
Vina
Vdiffina
VosI
VosAZ
VoffsettcAZ
Fain
PSRR
CMRR
Rin
Cin
NF
SINAD
SFDR
Min Typ Max
See analog input above
-
3
18
-
500 1000
-
4
-
0
-
2
60
-
-
60
-
-
10
-
-
8.0
-
0.16
-
-
84
-
-
90
-
Unit
Comment
mV
uV
µV/°C
MHz
dB
dB
Mohm
pF
µV/√Hz
dB
dB
Non auto-null differential opamp
offset ³
Auto-null differential opamp offset³
With auto-null active. From -40°C
to 125°C
Generally limited by aliasing to half
Sample and Hold clock.
d.c.
R=1/Cf equivalent
Switched capacitances
0dBu input, 1KHz, Noise summed
from 20Hz to 22KHz
0dBu input, 1KHz, Noise summed
from 20Hz to 22KHz
0dBu input, 1KHz
1.5.4 Chopper Amplifier Cell
Parameter
Input Range
Gain
Gain Accuracy
Equivalent Input Offset Voltage
Equivalent Input Offset Voltage
Equivalent Input Offset Voltage
Offset Voltage Temperature
Coefficient
Input Frequency
Symbol
Vina
Vdiffina
Ginamp
GA 0dB
GA10dB
GA20dB
GA30dB
GA40dB
VosI
VosAZ1
VosAZ2
VoffsettcAZ
Fain
Min Typ Max
See analog input above
0dB
-
60dB
-
-
5
-
5
-
5
-
5
-
5
-
0.5
14
-
250 500
-
25
100
-
15
TBD
0
-
-
Unit
-
-
%
%
%
%
%
mV
uV
uV
µV/°C
KHz
Comment
Usable input range will be reduced
by the effective gain setting ⁴
Software selected
0dB setting, 1KHz test signal.
10dB setting, 1KHz test signal.
20dB setting, 1KHz test signal.
30dB setting, 1KHz test signal.
40dB setting, 1KHz test signal.
Intrinsic differential opamp offset
Differential opamp offset, auto-
nulled, NOT chopped.
Differential opamp offset, auto-
nulled and chopped.
With auto-null and chopping active.
From -40°C to 125°C
Generally 10x slower than clock,
application dependent.
3 _{The sample and hold offset varies from phase1 to phase2. This is an average of both values}
4 _{To avoid clipping the maximum input range should be divided by the chopper gain}
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DS231000-U001d