AN221E04 Datasheet – Dynamically Reconfigurable FPAA With Enhanced I/O
DS030100-U006a - 10 -
Analog Outputs
(See “Output Cell” section in the AN120E04/AN220E04 user manual for more details)
Parameter
Symbol
Min
Typ
Max
Unit
Comment
High Precision Output Range c
Vouta
0.5
-
3.5
V
VMR +/- 1.5v
Standard Precision Output
Range d
Vouta
0.1
-
3.9
V
VMR +/- 1.9v
High Precision
Differential Output c
Vdiffouta
-
-
+/-3.0
V
Common mode voltage = 2 V
Standard precision
Differential Output d
Vdiffouta
-
-
+/-3.8
V
Common mode voltage = 2 V
Common Mode
Voltage
Vcm
1.9
2.0
2.1
V
c. High precision operating range provides optimal linearity and dynamic range.
d. Standard precision operating range provides maximum dynamic range and reduced linearity.
Output Voltage mode and filter ON, corner frequency 470KHz
Parameter
Symbol
Min
Typ
Max
Unit
Comment
Input Range
Vina
Vdiffina
See analog input above
V
Equivalent Input Offset
Vos
-
5
15
mV
Offset Voltage Temperature
Coefficient
Voffsettc
0.05 I
1.0 II
mV/°C
from -40°C to 125°C
I measured at filter corner: 470Khz
II maximum at filter corner: 76KHz
Output Frequency
Faout
-
-
-
MHz
Output filter frequency will define
the maximum frequency
Input filter is recommended to be
>30x higher then the max input
frequency, for good distortion
performance
Power Supply Rejection Ratio
PSRR
60
-
-
dB
d.c.
a.c. See graphical data on page 19
Large Signal Harmonic Distortion
Dist
-
-82
-
dB
4v p-p Differential input at 660Hz
Filter corner frequency 470KHz
Input Low Pass Filter (Anti-Alias)
Corner Frequency Settings
Ffiltcorner
76
-
470
KHz
Output Load c e
Rload
0.1
-
-
Mohm
Output Load c e
Cload
-
-
50
pF
Output Load d e
Rload
1
10
-
Kohm
Additional loading causes internal
voltage drops across output stage
and series resistances
The output stage has a small
signal output impedance of approx
10ohm
Output Load d e
Cload
-
-
100
pF
Common Mode Rejection Ratio
CMRR
-
56
-
dB
Input Referred Noise Figure
NF
-
0.22
-
µV/sqrtHz
Output filter corner fc = 470KHz
Applies to Audio frequency range
See graphical data on page 18
Signal-To Noise Ratio and
Distortion
SINAD
-
82
-
dB
Input signal = 1400 mV p-p diff,
Audio frequency range
See graphical data on page 18
Spurious Free Dynamic Range
SFDR
-
90
-
dB
Input signal =1400 mV p-p diff
See graphical data on page 18
c. High precision operating range provides optimal linearity and dynamic range.
d. Standard precision operating range provides maximum dynamic range and reduced linearity.
e. The maximum load for an analog output is 50 pF // 100 Kohms. This load maybe with respect to analog ground VMR or AVSS.
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