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TEMIC Semiconductors
TEMIC Semiconductors


U2532B

IR Transmitter and Receiver



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U2532B pdf
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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)



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U2532B pdf
U2532B
Pin Description
P_GND 1
16 NC
TxD 2
RxD 3
15 IRED
14 O_GND
Reset 4
VCC 5
13 NC
U2532B
12 NC
SC 6
11 A_GND
NC 7
10 NC
NC 8
9 IN
95 10244
Figure 2. Pinning
Block Diagram
Pin
1
2
3
4
5
6
7, 8,
10, 12,
13, 16
9
11
14
15
Symbol
P_GND
TxD
RxD
Reset
VCC
SC
NC
Function
Power ground
Transmitter input
Receiver output
AGC-Reset
Supply voltage
Sensitivity Control
Not connected
IN
A_GND
O_GND
IRED
Photodiode input
Analog ground
Output ground
IR-Emitter
2
BIAS
9
TIA
5 15
CGA
AGC
64
Figure 3. Block diagram
DRV
COMP
+
11
1
3
14
95 10211
2 (10)
TELEFUNKEN Semiconductors
Preliminary Information
Rev. A1, 27-Sep-96



Part Number U2532B
Description IR Transmitter and Receiver
Maker TEMIC Semiconductors - TEMIC Semiconductors
Total Page 10 Pages
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