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PDF U2532B Data sheet ( Hoja de datos )
| Número de pieza | U2532B | |
| Descripción | IR Transmitter and Receiver | |
| Fabricantes | TEMIC Semiconductors | |
| Logotipo |  |
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IR Transmitter and Receiver
U2532B
Description
The IC U2532B is a complete IR-Transmitter-Receiver
IC according to the new IrDA 1.0 standard.
ASK-modulation is also possible. Only an external
PIN-photodiode and an infrared emitting diode with
current limiting resistor must be connected to the
corresponding pins. The amplifier with Schmitt-Trigger
formed output signal and the IR-driver need no further
external components. The IC allows data rates from
2.4 kbit/s to 115.2 kbit/s and up to 500 kHz for
ASK-modulation. Two different sensitivity modes, which
can be programmed by applying a “High” or “Low”
voltage at pin SC, ensure either an increase in
transmission distance or a bit error rate of 1E-9. An
internal AGC allows proper operation under EMI
conditions.
Features
D Data rates up to 115.2 kbit/s
D Wide supply voltage range (3 to 5.5 V)
D AGC for EMI immunity
D AGC reset
D High and low sensitivity mode
D BER < 1E-9 in the low sensitivity mode
D Power-On reset
Applications
D IR data transmission
D Compatible to IrDA
D Bidirectional IR data transmission
D Ability to receive ASK modulation
Case: SO16
TxD Driver
V CC
RL
Amp
(AGC)
ST
RxD
SC Reset
95 10210
Figure 1.
TELEFUNKEN Semiconductors
Rev. A1, 27-Sep-96
Preliminary Information
1 (10)
1 page  
U2532B
Electrical Characteristics
Test conditions: VCC = 5 V, Tamb = 25°C, unless otherwise specified
Parameters
Receiver
Supported data rates
Supply voltage range
Supply current
Sensitivity control voltage
“Low”
Sensitivity control voltage
“High”
Input threshold
current
Input threshold
current
Input threshold current
for ASK modulation
Input threshold current
for ASK modulation
Max. signal pulse input
current
DC input current
Output voltage RxD
Output voltage RxD
Rise time
Fall time
Output pulse width
Output pulse width
Output delay time
Jitter
AGC dynamic range
AGC single step
Max. reset time
Test Conditions / Pins
Low sense mode
Pin 5
Pin 5
Pin 6
High sense mode Pin 6
SC > 0.5 V
VCC = 3 V
Pin 9
SC > 2.4 V, VCC = 3 V
Pin 9
SC < 0.5 V or open
VCC = 3 V
Pin 9
SC < 2.4 V or open
VCC = 5 V
Pin 9
Sensitivity independent
Pin 9
VIN > 0 V
Pin 9
Non active
Pin 3
Active; IL = 4 mA Pin 3
C = 15 pF,R = 2.2 kW Pin 3
C = 15 pF,R = 2.2 kW Pin 3
2.4 kbit/s,
78 m s pulse width Pin 3
115.2 kbit/s,
1.6 m s pulse width Pin 3
115.2 kbit/s,
1.6 m s pulse width
– Output level 0.5 VCC
– Leading edges of signals
– Related to optical input
Pin 3
115.2 kbit/s,
1.6 m s pulse width
– Period of 10 bits, all
“ones”
– Leading edges of signals
Pin 3
Pin 3
Pin 3
15 steps, covering full dy-
namic range of AGC
Pin 3
Symbol
VCC
IS
VSC
VSC
ilNmin
ilNmin
ilNmin
(ASK)
ilNmin
(ASK)
ilNmax
IIN
VOH
VOL
tr
tf
tp
tp
td
tj
treset
Min.
2.4
3
2.0
VCC–0.5
Typ.
5
1.3
0.2
VCC
60
30
200
120
0.2
0.5
0.3
7
2.5
1
30
2
270
Max.
115.2
5.5
2.5
0.5
90
45
400
250
6
200
0.5
15
4
2
2
400
Unit
kbit/s
V
mA
V
V
nA
nA
nA
nA
mA
mA
V
V
ms
ms
ms
ms
ms
ms
dB
dB
ms
TELEFUNKEN Semiconductors
Rev. A1, 27-Sep-96
Preliminary Information
5 (10)
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet U2532B.PDF ] | |
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