MCP39F521 datasheet(6/52 Pages) MICROCHIP

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MCP39F521

DS20005442A-page 6

 2015 Microchip Technology Inc.

10-Bit SAR ADC Performance for Temperature Measurement

Resolution

—10

—

bits

Absolute Input Voltage

VIN

DGND -0.3

—

DVDD +0.3

Recommended

Impedance of

Analog Voltage Source

RIN

——

2.5



Integral Nonlinearity

INL

—±1

±2

LSb

Differential Nonlinearity

DNL

—±1

±1.5

LSb

Gain Error

GERR

—±1

±3

LSb

Offset Error

EOFF

—±1

±2

LSb

Temperature

Measurement Rate

—

fLINE/2N

—sps

Note 3

Clock and Timings

I2C Clock Frequency

fSCL

—

400

kHz

100 kHz and 400 kHz

I2C modes supported

Master Clock

and Crystal Frequency

fMCLK

-2%

+2%

MHz

Capacitive Loading

on OSCO pin

COSC2

—

When an external clock is

used to drive the device

Internal Oscillator

Tolerance

fINT_OSC

—

-40 to +85°C only (Note 7)

Internal Voltage Reference

Internal Voltage

Reference Tolerance

VREF

-2%

1.2

+2%

Temperature Coefficient

TCVREF

—10

—

ppm/°C TA = -40°C to +85°C,

VREFEXT = 0

Output Impedance

ZOUTVREF

—2

—



Current, VREF

AIDDVREF

—40

—

µA

Voltage Reference Input

Input Capacitance

—

Absolute Voltage on

VREF+ Pin

VREF+

AGND + 1.1V

—

AGND +1.3V

TABLE 1-1:

ELECTRICAL CHARACTERISTICS (CONTINUED)

Electrical Specifications:

Unless otherwise indicated, all parameters apply at AVDD, DVDD = 2.7 to 3.6V, TA = -40°C

to +125°C, MCLK = 4 MHz, PGA GAIN = 1.

Characteristic

Sym.

Min.

Typ.

Max.

Units

Test Conditions

Note 1:

Calculated from reading the register values with no averaging, single computation cycle with accumulation

interval of 4 line cycles.

Specification by design and characterization; not production tested.

N = Value in the Accumulation Interval Parameter register. The default value of this register is 2 or

TCAL = 80 ms for 50 Hz line.

Applies to Voltage Sag and Voltage Surge events only.

Applies to all gains. Offset and gain errors depend on the PGA gain setting. See Section 2.0, Typical

Performance Curves

for typical performance.

VIN =1VPP =353 mVRMS @ 50/60 Hz.

Variation applies to internal clock and I2C only. All calculated output quantities are temperature

compensated to the performance listed in the respective specification.

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