CAT5251WI-00-T1 datasheet(5/15 Pages) ONSEMI

Part #	CAT5251WI-00-T1

Description	Quad Digital Potentiometer (POT)

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Table 4. POTENTIOMETER CHARACTERISTICS (Over recommended operating conditions unless otherwise stated.)

Symbol

Parameter

Test Conditions

Min

Typ

Max

Units

RPOT

Potentiometer Resistance (−00)

100

kW

RPOT

Potentiometer Resistance (−50)

50

kW

Potentiometer Resistance Tolerance

20

%

RPOT Matching

1

%

Power Rating

25C, each pot

50

mW

IW

Wiper Current

3

mA

RW

Wiper Resistance

IW = 3 mA @ VCC = 3 V

200

300

W

IW = 3 mA @ VCC = 5 V

100

150

W

VTERM

Voltage on any RH or RL Pin

VSS = 0 V

GND

VCC

V

VN

Noise

(Note 3)

nV/Hz

Resolution

0.4

%

Absolute Linearity (Note 4)

RW(n)(actual) − R(n)(expected)

(Note 7)

1

LSB

(Note 6)

Relative Linearity (Note 5)

RW(n+1) − [RW(n)+LSB]

(Note 7)

0.5

LSB

(Note 6)

TCRPOT

Temperature Coefficient of RPOT

(Note 3)

300

ppm/C

TCRATIO

Ratiometric Temp. Coefficient

(Note 3)

20

ppm/C

CH/CL/CW

Potentiometer Capacitances

(Note 3)

10/10/25

pF

fc

Frequency Response

RPOT = 50 kW (Note 3)

0.4

MHz

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

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

potentiometer.

5. Relative linearity is utilized to determine the actual change in voltage between two successive tap positions when used as a potentiometer.

It is a measure of the error in step size.

6. LSB = RTOT / 255 or (RH − RL) / 255, single pot

7. n = 0, 1, 2, ..., 255.

Table 5. D.C. OPERATING CHARACTERISTICS (Over recommended operating conditions unless otherwise stated.)

Symbol

Parameter

Test Conditions

Min

Typ

Max

Units

ICC1

Power Supply Current

fSCK = 2.5 MHz, SO Open

VCC = 6 V Inputs = GND

1

mA

ICC2

Power Supply Current

Non-volatile Write

fSCK = 2.5 MHz, SO = Open

VCC = 6 V Inputs = GND

5

mA

ISB

Standby Current (VCC = 5.0 V)

VIN = GND or VCC; SO Open

1

mA

ILI

Input Leakage Current

VIN = GND to VCC

10

mA

ILO

Output Leakage Current

VOUT = GND to VCC

10

mA

VIL

Input Low Voltage

−1

VCC x 0.3

V

VIH

Input High Voltage

VCC x 0.7

VCC + 1.0

V

VOL1

Output Low Voltage (VCC = 3 V)

IOL = 3 mA

0.4

V

VOH1

Output High Voltage (VCC = 6 V)

IOH = −1.6 mA

VCC − 0.8

V

Table 6. PIN CAPACITANCE (Note 8)

(Applicable over recommended operating range from TA = 25C, f = 1.0 MHz, VCC = +5.0 V (unless otherwise noted).)

Symbol

Parameter

Test Conditions

Min

Typ

Max

Units

COUT

Output Capacitance (SO)

VOUT = 0 V

8

pF

CIN

Input Capacitance (CS, SCK, SI, WP, HOLD, A0, A1

VIN = 0 V

6

pF

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