© 2009 Microchip Technology Inc.

DS21950E-page 3

MCP3550/1/3

1.0

ELECTRICAL

CHARACTERISTICS

1.1

Maximum Ratings*

Output Short Circuit Current ................................ Continuous

Current at Input Pins ....................................................±2 mA

Current at Output and Supply Pins ............................±10 mA

Storage Temperature ....................................-65°C to +150°C

Ambient temp. with power applied ................-55°C to +125°C

ESD protection on all pins (HBM, MM)

............ ≥ 6kV, ≥ 400V

† Notice: Stresses above those listed under "Maximum

Ratings" may cause permanent damage to the device. This is

a stress rating only and functional operation of the device at

those or any other conditions above those indicated in the

operation listings of this specification is not implied. Exposure

to maximum rating conditions for extended periods may affect

device reliability.

DC CHARACTERISTICS

Electrical Specifications: Unless otherwise indicated, all parameters apply at -40°C

applies to entire MCP3550/1/3 family.

Parameters

Sym

Min

Typ

Max

Units

Conditions

Noise Performance (MCP3550/1)

No Missing Codes

NMC

22

—

—

bits

At DC (Note 5)

Output Noise

—2.5

—

Effective Resolution

ER

—

21.9

—

bits RMS

Noise Performance (MCP3553)

No Missing Codes

NMC

20

—

—

bits

At DC (Note 5)

Output Noise

—6

—

Effective Resolution

ER

—

20.6

—

bits RMS

Conversion Times

MCP3550-50

-2.0%

80

+2.0%

ms

MCP3550-60

-2.0%

66.67

+2.0%

ms

MCP3551

-2.0%

73.1

+2.0%

ms

MCP3553

-2.0%

16.67

+2.0%

ms

Accuracy

Integral Non-Linearity

INL

—

±2

6

ppm

Offset Error

-12

±3

+12

µV

—±4

—

µV

—±6

—

µV

Positive Full Scale Error

-10

±2

+10

ppm

Negative Full Scale Error

-10

±2

+10

ppm

Offset Drift

—

0.040

—

ppm/°C

Positive/Negative Full Scale Error

Drift

—

0.028

—

ppm/°C

Note 1:

This parameter is established by characterization and not 100% tested.

2:

INL is the difference between the endpoints line and the measured code at the center of the quantization band.

3:

4:

5:

Characterized by design, but not tested.

6:

Rejection performance depends on internal oscillator accuracy; see Section 4.0 “Device Overview” for more informa-

tion on oscillator and digital filter design. MCP3550/1 device rejection specifications characterized from 49 to 61 Hz.