IRM7001 Vishay, IRM7001 Datasheet - Page 6

• Manufacturer Part Number: IRM7001
• Description: Sir Modulator/demodulator
• Manufacturer: Vishay

Table 6. Operating Conditions at V
IRDA Parameters
1. The Max Clk Frequency (f16xClk) represents the maximum
Document Number: 82576
Revision 17-August-01
Parameter
Supply voltage
Input voltage
Ambient temperature
High-Level Input Voltage
Low-Level Input Voltage
Output High Voltage
Output Low Voltage
Static Power Dissipation
Dynamic Power Dissipation
Static Current Consumption
Dynamic Power Dissipation
Max Clk Frequency(16XCLK)
Minimum Pulse Width(IR_TXD)
Pulse Width on monoshot (IR_TXD)
Output Capacitance on Output Pads
used for simulation
Value of pulldown resistor used on
POWERDN & PULSEMOD input pins
Trigger Low Level Input Voltage
(For /NRST input pin)
Trigger High Level Input Voltage
(For /NRST input pin)
clock frequency that the IRM7001 internal state machine
should be driven at. Under normal circumstances, this clock
input should not exceed 16*115200(bps) =1.8432 MHz.
This is the maximum transmission rate under the IRDA Phys-
ical layer 1.0 specification. The IRM7001 can handle higher
clock rates, but the recommended maximum is as specified
above.
Symbol
V
V
Ta
V
V
V
V
P
P
I
I
f
t
t
C
R
VIL_TRIG
VIH_TRIG
STAT
DYN
16xclk
mpw
mpw
CC
CC
IN
IH
IL
OH
OL
STAT
DYN
DWN
OUT
=5.5 V
Min
2.7
0
–20
0.7 V
0
4.5
1630
1630
114
0.7
1.7
CC
2. The Minimum Pulse Width (tmpw), represents the minimum
pulse width of the encoded IR_TXD pulse as well as the min-
imum pulse width for the IR_RCV pulse. As per the IRDA
specification, the minimum pulse width of the IR_TXD and
IR_RCV pulses should be 3*(1/1.8432 MHz) = 1.63 µ S. The
minimum pulse width that can be handled by the IRM7001 is
250ns, which is within the IRDA SIR specifications. Under
normal circumstances using a 16XCLK clock that does not
exceed 2 MHz, the minimum pulse width of IR_TXD should
not be shorter than 1.63 µs.
Typ
5
0.44
11
80
2
1710
152
0.8
1.85
Max
5.5
V
+85
V
0.3 V
0.5
0.61
16.5
110
3
2
1730
50
256
0.9
1.9
CC
CC
CC
Unit
V
V
°C
V
V
V
V
mW
mW
µ A
mA
MHz
ns
ns
pF
KOhms
V
V
www.vishay.com
Conditions
I
I
OH
OL
=2.0 mA
=2.0 mA
6