CAT5251JI-00TE13 datasheet(4/15 Pages) CATALYST

Part #	CAT5251JI-00TE13

Description	Quad Digitally Programmable Potentiometer (DPP) with 256 Taps and SPI Interface

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Manufacturer	CATALYST [Catalyst Semiconductor]

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CAT5251

Document No. 2017, Rev. D

Note:

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

(2)

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

(3) 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.

(4) LSB = RTOT / 255 or (RH - RL) / 255, single pot

(5) n = 0, 1, 2, ..., 255

ABSOLUTE MAXIMUM RATINGS*

Temperature Under Bias .................. -55

°C to +125°C

Storage Temperature ........................ -65

°C to +150°C

Voltage on any Pin with

Respect to VSS(1)(2) ................ -2.0V to +VCC +2.0V

VCC with Respect to Ground ................ -2.0V to +7.0V

Package Power Dissipation

Capability (TA = 25

°C) ................................... 1.0W

Lead Soldering Temperature (10 secs) ............ 300

°C

Wiper Current .................................................... +6mA

Note:

(1) The minimum DC input voltage is –0.5V. During transitions, inputs may undershoot to –2.0V for periods of less than 20 ns. Maximum DC voltage on output

pins is VCC +0.5V, which may overshoot to VCC +2.0V for periods of less than 20 ns.

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

*COMMENT

Stresses above those listed under “Absolute Maximum Ratings” may cause permanent

damage to the device. These are stress ratings only, and functional operation of the

device at these or any other conditions outside of those listed in the operational sections

of this specification is not implied. Exposure to any absolute maximum rating for extended

periods may affect device performance and reliability.

Recommended Operating Conditions:

VCC = +2.5V to +6.0V

Temperature

Min

Max

Industrial

-40

°C85°C

POTENTIOMETER CHARACTERISTICS

Over recommended operating conditions unless otherwise stated.

Symbol

Parameter

Test Conditions

Min

Typ

Max

Units

RPOT

Potentiometer Resistance (-00

)

100

k

Ω

RPOT

Potentiometer Resistance (-50

)

50

k

Ω

Potentiometer Resistance

+20

%

Tolerance

RPOT Matching

1

%

Power Rating

25

°C, each pot

50

mW

IW

Wiper Current

+3

mA

RW

Wiper Resistance

IW = +3mA @ VCC =3V

200

300

Ω

RW

Wiper Resistance

IW = +3mA @ VCC = 5V

100

150

Ω

VTERM

Voltage on any RH or RL Pin

VSS = 0V

GND

VCC

V

VN

Noise

(1)

nV/ Hz

Resolution

0.4

%

Absolute Linearity (2)

Rw(n)(actual)-R(n)(expected)(5)

+1

LSB (4)

Relative Linearity (3)

Rw(n+1)-[Rw(n)+LSB](5)

+0.5

LSB (4)

TCRPOT

Temperature Coefficient of RPOT

(1)

+300

ppm/

°C

TCRATIO

Ratiometric Temp. Coefficient

(1)

20

ppm/

°C

CH/CL/CW

Potentiometer Capacitances

(1)

10/10/25

pF

fc

Frequency Response

RPOT = 50k

Ω(1)

0.4

MHz

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