TPS830(F)

2007-10-01

4

Circuit Block Diagram

• Example of code signal = 11010010

Sequence of LED signals = 1 must be avoided. If LED signals of 1

sequence, TPS830(F) may not receive LED signals properly. After an LED

signal of 1, 0 must be sent (55μ or longer interval necessary).

Please take this into account when designing a bit pattern.

The following shows the bit pattern t example that is converted at first

code signals to LED signals as shown on the right diagram.

Precautions

device.

2. At power

−on the internal circuit takes about 100μs to stabilize. During this period the output signal is unstable

and may change.

4. When using the device, please take the device’s characteristics, the operating environment and the

characteristics of pairing LED device into considerations.

5. Soldering temperature: ≦ 260°C, soldering time : ≦ 5s (Soldering must be performed under the 2mm from

the body of the device.)

6. When forming the leads, bend each lead under the 2mm from the body of the device. Soldering must be

performed after the leads have been formed.

<Conversion example>

Code signal

LED signal

0

→

00

1

→

10

62μs

26μs

LED signals

<Pattern example>

Code signals

1

1

1

1

0

0

0

0

1

1

1

1

0

0 0 0

0 0 0 0 0

0 0 0

3. VCC

1. VO

I-V

Preamp.

BPF

AGC

LPF

PD

Average

Envelope

Output

Slicer

2. GND