Datasheet

MAX3120
Low-Profile, 3V, 120µA,
IrDA Infrared Transceiver
4 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(T
A
= +25°C, unless otherwise noted.)
1.0
2.0
1.5
3.0
2.5
3.5
4.0
04020 60 80 100
RXD OUTPUT PULSE WIDTH
vs. DISTANCE
MAX3120 TOC07
DISTANCE (cm)
RXD PULSE WIDTH
(µs)
TRANSMITTER POWER = 200mW/sr
INPUT PULSE WIDTH = 1.63µs
TEMIC BPV22NF
V
CC
= 3.3V
2V/div
2V/div
RXD OUTPUT
vs. INFRARED INPUT
MAX3120 toc11
100µs/div
RXD
OUTPUT
INFRARED
INPUT
V
CC
= 3.3V, 2400bps AT 10cm DISTANCE,
TERMIC BPV22NF, TRANSMIT POWER 200mW/sr
2V/div
2V/div
RXD OUTPUT
vs. INFRARED INPUT
MAX3120 toc09
100µs/div
RXD
OUTPUT
INFRARED
INPUT
V
CC
= 3.3V, 2400bps AT 1cm DISTANCE,
TERMIC BPV22NF, TRANSMIT POWER 200mW/sr
2V/div
2V/div
RXD OUTPUT
vs. INFRARED INPUT
MAX3120 toc10
2µs/div
RXD
OUTPUT
INFRARED
INPUT
V
CC
= 3.3V, 115.2kbps AT 10cm DISTANCE,
TERMIC BPV22NF, TRANSMIT POWER 200mW/sr
2V/div
2V/div
RXD OUTPUT
vs. INFRARED INPUT
MAX3120 toc08
2µs/div
RXD
OUTPUT
INFRARED
INPUT
V
CC
= 3.3V, 115.2kbps AT 1cm DISTANCE,
TERMIC BPV22NF, TRANSMIT POWER 200mW/sr
0
20
60
40
80
100
04020 60 80 100
RXD OUTPUT PULSE WIDTH
vs. DISTANCE
MAX3120 TOC06
DISTANCE (cm)
RXD PULSE WIDTH (µs)
TRANSMITTER POWER = 200mW/sr
INPUT PULSE WIDTH = 78µs
TEMIC BPV22NF
V
CC
= 3.3V
0
100
50
250
200
150
400
350
300
450
3.0 4.03.5 4.5 5.0 5.5
AMBIENT PHOTODIODE CURRENT REJECTION
vs. SUPPLY VOLTAGE
MAX3120 TOC05
SUPPLY VOLTAGE (V)
CURRENT REJECTION (µA)