IC-MSA Datasheet, PDF (24/29 Pages) IC-Haus GmbH – SIN/COS SIGNAL CONDITIONER with AGC and 1Vpp DRIVER

iC-MSA SIN/COS SIGNAL
preliminary
CONDITIONER with AGC and 1Vpp DRIVER
AUTOMATIC SIGNAL GAIN CONTROL and SIGNAL MONITORING
Rev A1, Page 24/29
Via its automatic gain control iC-MSA can keep the out-
put signals for the ensuing sine-to-digital conversion
constant regardless of changes in input signal level.
Both the controller operating range and input signal
amplitude for the controller are monitored and can be
enabled for error messaging.
AGCOFF
Code
0
1
Addr 0x45, bit 7
Function
Sine/cosine square control
AGC turned off
Table 38: Controller Operating Mode
ADJ
Code
0x00
0x01
Addr 0x45, bit 5:0
Square control AGCOFF = 0
Vpp() ca. 300 mV (60 %)
Vpp() ca. 305 mV (61 %)
...
Vpp()
≈
300
mV
77
77−(0.625∗Code)
0x32
...
0x3F
Vpp() ca. 500 mV (98 %)
...
Vpp() ca. 600 mV (120 %)
Table 39: Vpp Setpoint For Square Control
Figure 7: Signal level monitoring with square control
(example for AGCOFF = 0, ADJ = 0x32;
see Elec. Char. Nos.604 and 605 regard-
ing Vt()min resp. Vt()max).