Datasheet

MAX3130/MAX3131
3V to 5.5V, IrDA Infrared Transceiver with
Integrated RS-232 Interface
4 _______________________________________________________________________________________
Typical Operating Characteristics
(V
CC
= AV
CC
= 3.3V, GND = AGND = PGND, C1–C4 = 0.1µF, R
L
= 3kΩ, T
A
= +25°C, unless otherwise noted.)
200
240
220
300
280
260
360
340
320
380
-40 0 20-20 40 60 80 100
SUPPLY CURRENT vs. TEMPERATURE
MAX3130 toc01
TEMPERATURE (°C)
I
CC
(µA)
V
CC
= 3.3V or 5V
90
110
100
130
120
140
150
-40 20 40-20 0 60 80 100
ANALOG SUPPLY CURRENT
vs. TEMPERATURE
MAX3130 toc02
TEMPERATURE (°C)
I
AVCC
(µA)
AV
CC
= 5V
AV
CC
= 3.3V
0
100
300
200
400
500
3.0 4.03.5 4.5 5.0 5.5
AMBIENT PHOTODIODE CURRENT
REJECTION vs. SUPPLY VOLTAGE
MAX3130 toc03
SUPPLY VOLTAGE (V)
CURRENT REJECTION (µA)
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
-40 0-20 20 40 80 100
LED DRIVER ON-RESISTANCE
vs. TEMPERATURE
MAX3130 toc04
TEMPERATURE (°C)
R
LED
(Ω)
V
CC
= 3.3V
V
CC
= 5V
I
LEDC
= 200mA
0
200
100
400
300
500
600
100 200 250150 300 350 400
LEDC VOLTAGE vs. LEDC CURRENT
MAX3130 toc05
LEDC CURRENT (mA)
LEDC VOLTAGE (mV)
PULSED AT
20% DUTY CYCLE
V
CC
= 3.3V
V
CC
= 5V
0
20
60
40
80
100
04020 60 80 100
RXD OUTPUT PULSE WIDTH
vs. DISTANCE (2400bps)
MAX3130 toc06
DISTANCE (cm)
RXD PULSE WIDTH (µs)
TRANSMITTER POWER = 200mW/sr
INPUT PULSE WIDTH = 78µs
TEMIC BPV22NF
V
CC
= 3.3V
Note 1: C1–C4 = 0.1µF, tested at +3.3V ±10%. C1 = 0.047µF, C2–C4 = 0.33µF, tested at +5.0V ±10%.
Note 2: All supply current measurements are made under no-load condition on all outputs, and all input voltages are at V
CC
or GND.
Note 3: For a compliant IrDA input signal where the data rate is within the supported data rate for the IR receive mode: rise/fall
times are less than 600ns and pulse widths are between 1.41µs and 3/16 of the baud rate.
630
MIN TYP MAX
V
CC
= 3.3V, R
L
= 3kΩ to
7kΩ, measured from
+3V to -3V or -3V to +3V,
T
A
= +25°C
Transition-Region Slew Rate V/µs
UNITSCONDITIONSPARAMETER
100Delay until transmitter outputs are validTransmitter Enable Time µs
C
L
= 150pF to 1000pF
C
L
= 150pF to 2500pF 430
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= AV
CC
= 3.0V to 5.5V, GND = AGND = PGND, C1–C4 = 0.1µF (Note 1), T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical
values are at T
A
= +25°C and V
CC
= AV
CC
= 3.3V.)