CY8C38 Datasheet, PDF (75/100 Pages) Cypress Semiconductor – Programmable System-on-Chip (PSoC)

PRELIMINARY
PSoC^®3: CY8C38 Family Data Sheet
11.5.10 Transimpedance Amplifier
The TIA is created using a SC/CT Analog Block, see the TIA component data sheet in PSoC Creator for full AC/DC specifications,
and APIs and example code.
Table 11-33. Transimpedance Amplifier (TIA) DC Specifications
Parameter
Vioff
Rconv
Description
Input offset voltage
Conversion resistance^[16]
R = 20K
R = 30K
R = 40K
R = 80K
R = 120K
R = 250K
R= 500K
R = 1M
Quiescent current
Conditions
40 pF load
40 pF load
40 pF load
40 pF load
40 pF load
40 pF load
40 pF load
40 pF load
Min
Typ
Max
-
-
10
-20
-
+30
-20
-
+30
-20
-
+30
-20
-
+30
-20
-
+30
-20
-
+30
-20
-
+30
-20
-
+30
-
900
-
Units
mV
%
%
%
%
%
%
%
%
µA
Table 11-34. Transimpedance Amplifier (TIA) AC Specifications
Parameter
Description
Input bandwidth (-3 dB) - 20 pF load^[15]
R = 20K
R = 120K
R = 1M
Input bandwidth (3 dB) - 40 pF load
R = 20K
R = 120K
R = 1M
Conditions
Min
Typ
Max
1800
-
-
330
-
-
47
-
-
1500
-
-
300
-
-
46
-
-
Units
kHz
kHz
kHz
kHz
kHz
kHz
Note
16. Conversion resistance values are not calibrated. Calibrated values and details about calibration are provided in PSoC Creator component data sheets. External
precision resistors can also be used.
Document Number: 001-11729 Rev. *I
Page 75 of 100
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