ADAV4601 System Design Document
Confidential Information
Rev.1 August 2009
Analog Devices
Page 80
Bit No.
Bit
Name
Description
Default
0x0F = 0 dB
…
0x16 = −7 dB
…
0x1D = −14 dB
0x1E = −15 dB
Bits[7:5]
Hold
time
These register bits control the hold time for the limiter, which is the time in ms
that the limiter
holds the attenuated level after the current input to the limiter function falls
below the limiter
threshold.
000
0x0 = 0 ms
0x1 = 10 ms
0x2 = 20 ms
0x3 = 30 ms
0x4 = 40 ms
0x5 = 50 ms
0x6 = 60 ms
0x7 = 70 ms
Bits[4:0]
Decay
time
These register bits control the decay time for the limiter in the range of 10 dB/s
to 320 dB/s in
10 dB/s steps.
00000
0x00 = 10 dB/s (~870 ms)
0x01 = 20 dB/s (~435 ms)
0x02 = 30 dB/s (~289 ms)
0x03 = 40 dB/s (~217 ms)
0x04 = 50 dB/s (~173 ms)
0x05 = 60 dB/s (~144 ms)
0x06 = 70 dB/s (~124 ms)
0x07 = 80 dB/s (~108 ms)
0x08 = 90 dB/s (~96 ms)
0x09 = 100 dB/s (~86 ms)
0x0A = 110 dB/s (~78 ms)
0x0B = 120 dB/s (~72 ms)
0x0C = 130 dB/s (~66 ms)
0x0D = 140 dB/s (~62 ms)
0x0E = 150 dB/s (~57 ms)
0x0F = 160 dB/s (~54 ms)
0x10 = 170 dB/s (~51 ms)
0x11 = 180 dB/s (~48 ms)
0x12 = 190 dB/s (~45 ms)
0x13 = 200 dB/s (~43 ms)
0x14 = 210 dB/s (~41 ms)
0x15 = 220 dB/s (~39 ms)
0x16 = 230 dB/s (~37 ms)
0x17 = 240 dB/s (~36 ms)
0x18 = 250 dB/s (~34 ms)
0x19 = 260 dB/s (~33 ms)
0x1A = 270 dB/s (~32 ms)
0x1B = 280 dB/s (~31 ms)
