Rainbow-electronics DS1855 Instrukcja Użytkownika Pobierz pdf (Strona 13)

DS1855

13 of 20

ANALOG RESISTOR CHARACTERISTICS (-40°C to +85°C; V

= 2.7V to 5.5V)

PARAMETER SYMBOL CONDITION MIN TYP MAX UNITS NOTES

Resistor Inputs L, H, W

GND -

0.3

+0.3 V

Wiper Resistance R

3.0V

5.0V

400

250

1000

600

Wiper Current I

2mA

End-to-End Resistance

+25°C-20 +20%

Absolute Linearity

10kW/100 pos.

10kW/256 pos.

20kW/256 pos.

50kW/256 pos.

100kW/256 pos.

-0.75

-1.0

-1.5

-2.25

0.75

1.0

1.5

2.25

LSB 9

Relative Linearity

10kW/100 pos.

all other pots

-0.25

-0.5

+0.25

0.5

LSB 10

-3dB Cutoff

Frequency

cutoff

DS1855-010 1 MHz

End-to-End Temp.

Coefficient

750

ppm/°C

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 19 20

1 of 20 100101 1
14-Pin TSSOP (173-mil) 1
16-Ball STPBGA (4mm x 4mm) 1
(Not Shown) 1
PIN DESCRIPTIONS 2
DS1855 BLOCK DIAGRAM Figure 1 3
MEMORY ORGANIZATION 4
2-WIRE OPERATION 6
CURRENT ADDRESS READ 7
RANDOM READ 7
SEQUENTIAL ADDRESS READ 7
2-WIRE SERIAL PORT OPERATION 8
WRITE PROTECT 9
LOCKING AND UNLOCKING EEPROM 10
11 of 20 11
ABSOLUTE MAXIMUM RATINGS* 12
= 2.7V to 5.5V) 12
= 2.7V to 5.5V) 13
15 of 20 15
VOLTAGE (V) 16
ATTENUATION vs. FREQUENCY 17
FREQUENCY (Hz) 17
FREQUENCY (kHz) 18
RESISTANCE FROM W TO L 19
ORDERING INFORMATION 20

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