MCP3021 datasheet(2/26 Pages) MICROCHIP

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MCP3021

DS21805A-page 2

 2003 Microchip Technology Inc.

1.0

ELECTRICAL

CHARACTERISTICS

Absolute Maximum Ratings †

VDD...................................................................................7.0V

Analog input pin w.r.t. VSS.......... ............. -0.6V to VDD +0.6V

SDA and SCL pins w.r.t. VSS........... .........-0.6V to VDD +1.0V

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

Ambient temp. with power applied ................-65°C to +125°C

Maximum Junction Temperature .......... .........................150°C

ESD protection on all pins (HBM) ......... ........................

≥ 4kV

† 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 operational list-

ings of this specification is not implied. Exposure to maximum

rating conditions for extended periods may affect device reli-

ability.

PIN FUNCTION TABLE

Name

Function

VDD

+2.7V to 5.5V Power Supply

VSS

Ground

AIN

Analog Input

SDA

Serial Data In/Out

SCL

Serial Clock In

DC ELECTRICAL SPECIFICATIONS

Electrical Characteristics: Unless otherwise noted, all parameters apply at VDD = 5.0V, VSS = GND, RPU = 2 kΩ

TA = -40°C to +85°C, I

2C Fast Mode Timing: f

SCL = 400 kHz (Note 3).

Parameters

Sym

Min

Typ

Max

Units

Conditions

DC Accuracy

Resolution

bits

Integral Nonlinearity

INL

—

±0.25

±1

LSB

Differential Nonlinearity

DNL

—

±0.25

±1

LSB

No missing codes

Offset Error

—

±0.75

±3

LSB

Gain Error

—

-1

±3

LSB

Dynamic Performance

Total Harmonic Distortion

THD

—

-70

—

VIN = 0.1V to 4.9V @ 1 kHz

Signal to Noise and Distortion

SINAD

—

VIN = 0.1V to 4.9V @ 1 kHz

Spurious Free Dynamic Range

SFDR

—

VIN = 0.1V to 4.9V @ 1 kHz

Analog Input

Input Voltage Range

VSS-0.3

—

VDD+0.3

2.7V

≤ VDD ≤ 5.5V

Leakage Current

-1

—

µA

SDA/SCL (open-drain output)

Data Coding Format

Straight Binary

High-level input voltage

VIH

0.7 VDD

——

Low-level input voltage

VIL

—

0.3 VDD

Low-level output voltage

VOL

——

0.4

IOL = 3 mA, RPU = 1.53 kΩ

Hysteresis of Schmitt trigger inputs

VHYST

—0.05VDD

—V

fSCL = 400 kHz only

Note 1:

Sample time is the time between conversions after the address byte has been sent to the converter. Refer

to Figure 5-6.

This parameter is periodically sampled and not 100% tested.

RPU = Pull-up resistor on SDA and SCL.

SDA and SCL = VSS to VDD at 400 kHz.

tACQ and tCONV are dependent on internal oscillator timing. See Figure 5-5 and Figure 5-6 for relation to

SCL.

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