DP7140 datasheet(3/11 Pages) COPAL

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DP7140

Table 5. POTENTIOMETER CHARACTERISTICS (Note 2) (VCC = +2.5 V to +5.5 V, 40 C to +85 C unless otherwise specified.)

Parameter

Test Conditions

Symbol

Limits

Units

Min

Typ

Max

Potentiometer Resistance

RPOT

Potentiometer Resistance

RPOT

100

Potentiometer Resistance Tolerance

Power Rating

25 C

Wiper Current

Wiper Resistance

IW = 3 mA

VCC = 3.3 V

200

Integral Non Linearity

Voltage Divider Mode

INL

LSB (Note 3)

Differential Non Linearity

DNL

0.5

LSB (Note 3)

Integral Non Linearity

Resistor Mode

RINL

LSB (Note 3)

Differential Non Linearity

RDNL

0.5

LSB (Note 3)

Voltage on RH or RL

VSS = 0 V

VTERM

VSS

VCC

Resolution

0.4

Zero Scale Error

0.5

LSB (Note 4)

Full Scale Error

0.5

LSB (Note 4)

Temperature Coefficient of RPOT

(Notes 5, 6)

TCRPOT

100

ppm/ C

Ratiometric Temp. Coefficient

(Notes 5, 6)

TCRATIO

ppm/ C

Potentiometer Capacitances

(Notes 5, 6)

CH/CL/CW

10/10/25

Frequency Response

RPOT = 50 k (Note 7)

0.4

MHz

2. Latch up protection is provided for stresses up to 100 mA on address and data pins from 1 V to VCC +1 V.

3. LSB = RTOT / 255 or (RH

RL) / 255, single pot.

4. V(RW)255 V(RW)0]/255 (RW)255 = 0xFF, (RW)0 = 0x00.

5. Absolute linearity is utilized to determine actual wiper voltage versus expected voltage as determined by wiper position when used as a

potentiometer.

6. Relative linearity is a measure of the error in step size. It is determined by the actual change in voltage between two successive tap positions

when used as a potentiometer.

7. This parameter is tested initially and after a design or process change that affects the parameter.

Table 6. D.C. OPERATING CHARACTERISTICS (VCC =+2.5V to +5.5 V, 40 C to +85 C unless otherwise specified.)

Parameter

Test Conditions

Symbol

Min

Max

Units

Power Supply Current

Volatile Write & Read

fSCL = 400 kHz

VCC = 5.5 V, Inputs = GND

ICC1

Power Supply Current

Non volatile Write

fSCL = 400 kHz

VCC = 5.5 V, Inputs = GND

ICC2

Standby Current

VCC = 5.0 V

ISB

Input Leakage Current

VIN = GND to VCC

ILI

+10

Output Leakage Current

VOUT = GND to VCC

ILO

Input Low Voltage

VIL

VCC x 0.3

Input High Voltage

VIH

VCC x 0.7

VCC + 1.0

SDA Output Buffer Low Voltage

VCC = 2.5 V, IOL = 4 mA

VOL1

0.4

Power On Recall

Minimum VCC for memory recall

VPOR

1.4

2.0

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