CAT5221WI10(2013) 查看數據表（PDF） - ON Semiconductor

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CAT5221WI10
(Rev.:2013)

Dual Digital Potentiometer (POT) with 64 Taps and I2C Interface

ON Semiconductor 

CAT5221

Table 2. ABSOLUTE MAXIMUM RATINGS

Parameter

Ratings

Units

Temperature Under Bias

−55 to +125

C

Storage Temperature

−65 to +150

C

Voltage on any Pin with Respect to VSS (Note 1)

VCC with Respect to Ground

Package Power Dissipation Capability (TA = 25C)

Lead Soldering Temperature (10 s)

−2.0 to +VCC +2.0

V

−2.0 to +7.0

V

1.0

W

300

C

Wiper Current

12

mA

Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the

Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect

device reliability.

Table 3. RECOMMENDED OPERATING CONDITIONS (Vcc = +2.5 V to +6 V)

Parameter

Operating Ambient Temperature (Industrial)

Ratings

−40 to +85

Units

C

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

Symbol

Parameter

Test Conditions

Min

Typ

Max Units

RPOT

RPOT

RPOT

RPOT

Potentiometer Resistance (−00)

Potentiometer Resistance (−50)

Potentiometer Resistance (−10)

Potentiometer Resistance (−2.5)

Potentiometer Resistance Tolerance

100

kW

50

kW

10

kW

2.5

kW

20

%

RPOT Matching

Power Rating

25C, each pot

1

%

50

mW

IW

RW

RW

VTERM

VN

Wiper Current

Wiper Resistance

Wiper Resistance

Voltage on any RH or RL Pin

Noise

Resolution

IW = +3 mA @ VCC = 3 V

IW = +3 mA @ VCC = 5 V

VSS = 0 V

(Note 3)

GND

80

TBD

1.6

6

mA

300

W

150

W

VCC

nV/Hz

%

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)

0.2

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

0.4

MHz

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

voltage on output pins is VCC +0.5 V, which may overshoot to VCC +2.0 V 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 –1 V to VCC + 1 V.

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 / 63 or (RH − RL) / 63, single pot

7. n = 0, 1, 2, ..., 63

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