CS3302A Datasheet, PDF (6/16 Pages) Cirrus Logic – High-Z, Programmable Gain, Differential Amplifier

CS3302A
DS765PP1
CS3302A
ANALOG CHARACTERISTICS (CONT.)
Parameter
Gain
Gain, Differential
Gain, Common Mode
Gain Accuracy, Absolute
Gain Accuracy, Relative (Note 8)
Gain Drift
Offset
Offset Voltage, Input Referred
Offset After Calibration, Absolute
Offset Calibration Range
Offset Voltage Drift
Symbol
(Note 6)
(Note 7)
x2
x4
x8
x16
x32
x64
(Note 4, 9)
GAIN
GAIN_CM
GAIN_ABS
LIN
GAIN_TC
(Note 10) OFST
(Note 11)
(Note 12)
(Note 4, 9)
OFST_CAL
OFST_RNG
OFST_TC
CS3302A
Min
Typ
Max
x1
-
x64
-
x1
-
-
±1
±2
-0.4
-0.2
0
-
-0.2
-
-
-0.2
-
-
-0.2
-
-
-0.2
-
-
-0.2
-
-
5
-
-
+250 +750
-
+1
-
-
100
-
-
1
-
Unit
%
%
ppm / ºC
µV
µV
% F.S.
µV / ºC
Notes: 6. Common mode signals pass unchanged through the differential amplifier architecture and are rejected
by the CS5371A / 72A / 73A modulator CMRR.
7. Absolute gain accuracy tests the matching of x1 gain across multiple CS3302A devices.
8. Relative gain accuracy tests the tracking of x1,x2, x4,x16,x32,x64 gain relative to x1 gain on a single
CS3302A device.
9. Specification is for the parameter over the specified temperature range and is for the CS3302A device
only. It does not include the effects of external components.
10. Offset voltage is tested with the amplifier inputs connected to the internal 800Ω termination.
11. The absolute offset after calibration specification applies to the effective offset voltage of the CS3302A
output when used with the CS5371A / 72A / 73A modulator and the CS5376A / 78 digital filter, and is
measured from the digitally calibrated output codes of the CS5376A / 78.
12. The CS3302A offset calibration is performed digitally with the CS5371A / 72A / 73A modulator and
CS5376A / 78 digital filter and includes the full scale signal range. Calibration offsets of greater than +
5% of full scale will begin to subtract from system dynamic range.
6
DS765PP1