M
Low-Profile, 3V, 120μA,
IrDA Infrared Transc eiver
4
_______________________________________________________________________________________
Typic al Operating Charac teristic s (c ontinued)
(T
A
= +25°C, unless otherwise noted.)
1.0
2.0
1.5
3.0
2.5
3.5
4.0
0
40
20
60
80
100
RXD OUTPUT PULSE WIDTH
vs. DISTANCE
M
DISTANCE (cm
R
(
μ
s
TRANSMITTER POWER = 200mW/sr
INPUT PULSE WIDTH = 1.63
μ
s
TEMIC BPV22NF
V
CC
= 3.3V
2V/div
2V/div
RXD OUTPUT
vs. INFRARED INPUT
MAX3120 toc11
100
μ
s/div
RXD
OUTPUT
INFRARED
INPUT
V
CC
= 3.3V, 2400bps AT 10cmDISTANCE,
TERMIC BPV22NF, TRANSMIT POWER 200mW/sr
2V/div
2V/div
RXD OUTPUT
vs. INFRARED INPUT
MAX3120 toc09
100
μ
s/div
RXD
OUTPUT
INFRARED
INPUT
V
CC
= 3.3V, 2400bps AT 1cmDISTANCE,
TERMIC BPV22NF, TRANSMIT POWER 200mW/sr
2V/div
2V/div
RXD OUTPUT
vs. INFRARED INPUT
MAX3120 toc10
2
μ
s/div
RXD
OUTPUT
INFRARED
INPUT
V
CC
= 3.3V, 115.2kbps AT 10cmDISTANCE,
TERMIC BPV22NF, TRANSMIT POWER 200mW/sr
2V/div
2V/div
RXD OUTPUT
vs. INFRARED INPUT
MAX3120 toc08
2
μ
s/div
RXD
OUTPUT
INFRARED
INPUT
V
= 3.3V, 115.2kbps AT 1cmDISTANCE,
TERMIC BPV22NF, TRANSMIT POWER 200mW/sr
0
20
60
40
80
100
0
40
20
60
80
100
RXD OUTPUT PULSE WIDTH
vs. DISTANCE
M
DISTANCE (cm
R
μ
s
TRANSMITTER POWER = 200mW/sr
INPUT PULSE WIDTH = 78
μ
s
TEMIC BPV22NF
V
CC
= 3.3V
0
100
50
250
200
150
400
350
300
450
3.0
4.0
3.5
4.5
5.0
5.5
AMBIENT PHOTODIODE CURRENT REJECTION
vs. SUPPLY VOLTAGE
M
SUPPLY VOLTAGE (V)
C
μ
A