TSL1401CS−LF

128 × 1 LINEAR SENSOR ARRAY WITH HOLD

TAOS072E − APRIL 2007

8

r

r

Copyright E 2007, TAOS Inc.

The LUMENOLOGY r Company

www.taosinc.com

APPLICATION INFORMATION

Power Supply Considerations

Connection Diagrams

The HOLD pin on the device is normally connected to the SI pin in single-die operation. In multi-die operation

of n die, the HOLD pin is used to provide a continuous scan across the n die. See Figure 9 for an example of

this wiring configuration. Note that there is a single AO signal when used in this mode. Alternately, the individual

die may be scanned all at once by connecting the individual SI and HOLD lines and reading the AO signals in

parallel. See Figure 10 for an example of this wiring configuration.

SO

7

AO

6

GND

GND

SI

HOLD

CLK

TSL1401CS−LF

5

8

4

3

2

1

SO

7

AO

6

GND

SI

HOLD

CLK

TSL1401CS−LF

5

8

4

3

2

1

SO

7

AO

6

GND

SI

HOLD

CLK

TSL1401CS−LF

5

8

4

3

2

1

AO

SI

CLK

C1

0.1 mF

C2

0.1 mF

C3

0.1 mF

Figure 9. Multi-Die Continuous Scan

SO

7

AO

6

GND

GND

SI

HOLD

CLK

TSL1401CS−LF

5

8

4

3

2

1

SO

7

AO

6

GND

SI

HOLD

CLK

TSL1401CS−LF

5

8

4

3

2

1

SO

7

AO

6

GND

SI

HOLD

CLK

TSL1401CS−LF

5

8

4

3

2

1

AO2

SI

CLK

AO1

AO3

C1

0.1 mF

C2

0.1 mF

C3

0.1 mF

Figure 10. Multi-Die Individual Scan