MCP3021A7T-E/OT 查看數據表（PDF） - Microchip Technology

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MCP3021A7T-E/OT

Low Power 10-Bit A/D Converter With I2C™ Interface

Microchip Technology 

MCP3021

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) ......... ........................≥ 4 kV

† 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.

DC ELECTRICAL SPECIFICATIONS

PIN FUNCTION TABLE

Name

VDD

VSS

AIN

SDA

SCL

Function

+2.7V to 5.5V Power Supply

Ground

Analog Input

Serial Data In/Out

Serial Clock In

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

TA = -40°C to +85°C, I2C Fast Mode Timing: fSCL = 400 kHz (Note 3).

Parameters

Sym

Min

Typ

Max Units

Conditions

DC Accuracy

Resolution

10

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

Signal to Noise and Distortion

SINAD —

60

Spurious Free Dynamic Range

SFDR

—

74

Analog Input

—

dB VIN = 0.1V to 4.9V @ 1 kHz

—

dB VIN = 0.1V to 4.9V @ 1 kHz

—

dB VIN = 0.1V to 4.9V @ 1 kHz

Input Voltage Range

Leakage Current

VSS-0.3

—

VDD+0.3 V 2.7V ≤ VDD ≤ 5.5V

-1

—

+1

µA

SDA/SCL (open-drain output)

Data Coding Format

Straight Binary

High-level input voltage

VIH 0.7 VDD —

—

V

Low-level input voltage

VIL

—

—

0.3 VDD V

Low-level output voltage

VOL

—

—

0.4

V 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.

2: This parameter is periodically sampled and not 100% tested.

3: RPU = Pull-up resistor on SDA and SCL.

4: SDA and SCL = VSS to VDD at 400 kHz.

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

SCL.

DS21805A-page 2

 2003 Microchip Technology Inc.

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