MCP433X datasheet(5/88 Pages) MICROCHIP

5 / 88 page

 2010 Microchip Technology Inc.

DS22242A-page 5

MCP433X/435X

Resistance

(± 20%)

RAB

4.0

6.0



-502 devices

(Note 1)

8.0

12.0



-103 devices

(Note 1)

40.0

60.0



-503 devices

(Note 1)

80.0

100

120.0



-104 devices

(Note 1)

Resolution

257

Taps

8-bit

No Missing Codes

129

Taps

7-bit

No Missing Codes

Step Resistance

—RAB/

(256)

—



8-bit

Note 6

—RAB/

(128)

—



7-bit

Note 6

Nominal

Resistance Match

(| RABWC -

RABMEAN |)/

RABMEAN

—0.2

1.50

5 k



MCP43X1 devices only

—0.2

1.25

10 k



—0.2

1.0

50 k



—0.2

1.0

100 k



(| RBWWC -

RBWMEAN |)/

RBWMEAN

—

0.25

1.75

5 k



Code = Full Scale

—

0.25

1.50

10 k



—

0.25

1.25

50 k



—

0.25

1.25

100 k



Wiper Resistance

(Note 3, Note 4)

—75

160



VDD = 5.5 V, IW = 2.0 mA, code = 00h

—75

300



VDD = 2.7 V, IW = 2.0 mA, code = 00h

Nominal

Resistance

Tempco

RAB/T—

—

ppm/°C TA = -20°C to +70°C

—

100

—

ppm/°C TA = -40°C to +85°C

—

150

—

ppm/°C TA = -40°C to +125°C

Ratiometeric

Tempco

VWB/T

—

ppm/°C Code = Mid-scale (80h or 40h)

Resistance

Tracking

RTRACK

Section 2.0

ppm/°C See Section 2.0 “Typical Performance

Curves”

AC/DC CHARACTERISTICS (CONTINUED)

DC Characteristics

Standard Operating Conditions (unless otherwise specified)

Operating Temperature

–40°C

 TA  +125°C (extended)

All parameters apply across the specified operating ranges unless noted.

VDD = +2.7V to 5.5V, 5 k, 10 k, 50 k, 100 k devices.

Typical specifications represent values for VDD = 5.5V, TA = +25°C.

Parameters

Sym

Min

Typ

Max

Units

Conditions

Note 1:

Resistance is defined as the resistance between terminal A to terminal B.

INL and DNL are measured at VW with VA = VDD and VB = VSS.

MCP43X1 only.

MCP43X2 only, includes VWZSE and VWFSE.

Resistor terminals A, W and B’s polarity with respect to each other is not restricted.

This specification by design.

Non-linearity is affected by wiper resistance (RW), which changes significantly over voltage and

temperature.

The MCP43X1 is externally connected to match the configurations of the MCP43X2, and then tested.

POR/BOR is not rate dependent.

10: Supply current is independent of current through the resistor network.

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