ISL5416_14 Datasheet, PDF (67/71 Pages) Intersil Corporation – Four-Channel Wideband Programmable

ISL5416
AGC BIT
WEIGHTS
TABLE 86. AGC BIT WEIGHTS (Continued)
F E D C B A 9 8 7 6 5 4 3 2 1 0. 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9
BARREL SHIFTER SHIFT
EEEE = 0
S. 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3
EEEE = 4
S. 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 G G G G
EEEE = 8
S. 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 G G G G G G G G
EEEE = 15 S. 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 G G G G G G G G G G G G G G G
------------SATURATE ON OVERFLOW---------
--
BS OUT /
MULT IN
S. 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3
MULT
1.0 <= M<= 2.0
GV 12345678901234
MULT OUT
S0 12345678901234567890123
SATURATE BASED ON SHIFT AND MULT OUT:
FEEDBACK
PATH;
OUTPUTS I/Q
S. 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3
MAG IN
S. 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3
MAGNITUDE (G = 1.647, MAX IN = 1.414, MAX OUT = 2.33):
G1 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3
THRESHOLD
21 0 1234567890123
MEAN ERROR
S1 0 1234567890123
MEDIAN
ERROR
G G G. V G G G G G G G G G G G G
V V V. V G G G G G G G G G G G G
LG MANTISSA
G. 1 2 3 4
LG MANT
MULT OUT
S1 0 123456789012345
LG EXP SHIFT
=0
SSSSSSSSSSSSSSSSS1 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4
LG EXP SHIFT
=4
S S S S S S S S S S S S S 1 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 GGG
LG EXP SHIFT
=8
S S S S S S S S S 1 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 GGGGGGG
LG EXP SHIFT
= 15
S S 1 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 GGGGGGGGGGGGGG
LG ACCUM
3 2 1 0. 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9
LL / UL
GGG 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
OUTPUT FWD
GAIN
E E E EMMMMMMMMMMMMMM
OUTPUT uP /
PARALLEL
G E E E EMMMMMMMMMMM
BIT WEIGHTS (dB); MAX GAIN = 96.3293 dB
4 21
8 42631000000000000
S = SIGN
. .................
G = LOGIC 0
1 00005731000000000
E=EXPONENT
6 84210578942100000
M=
MANTISSA
4 21005268473152100
V = LOGIC 1
8 42631531105799574
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