Datasheet

LED1 (IR LED)
On Signal
LED2 (RED LED)
On Signal
t
0
ADC Conversion
Pulse Repetition Period (PRP),
One Cycle
ADC Reset
CONV
LED1_amb
,
Convert Ambient Sample
LED1 (IR) Phase
CONV
LED1
,
Convert LED1 (IR) Sample
CONV
LED2_amb
,
Convert Ambient Sample
LED2 (RED) Phase
CONV
LED2
,
Convert LED2 (RED) Sample
S
LED2
,
Sample LED2 (RED)
S
LED2_amb
,
Sample Ambient
LED2 (RED) Phase
S
LED1
,
Sample LED1 (IR)
S
LED1_amb
,
Sample Ambient
LED1 (IR) Phase
t
29
t
3
t
4
t
10
t
9
t
5
t
6
t
7
t
8
t
11
t
12
t
2
t
1
t
13
t
14
t
15
t
16
t
17
t
18
t
19
t
20
t
21
t
22
t
23
t
24
t
25
t
26
t
27
t
28
AFE4490
SBAS602F –DECEMBER 2012–REVISED OCTOBER 2013 www.ti.com
(1) RED = LED2, IR = LED1.
Figure 62. Programmable Clock Edges
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