MCP3906AT-E/SS【PDF 4/32 页】IC ENERGY METERING 24SSOP

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MCP3905A/05L/06A

ELECTRICAL CHARACTERISTICS (CONTINUED)

Electrical Specifications: Unless otherwise indicated, all parameters apply at AV DD = DV DD = 4.5V – 5.5V,

Internal V REF , HPF turned on (AC mode), A GND , D GND = 0V, MCLK = 3.58 MHz; T A = -40°C to +85°C.

Parameter

Sym

Min

Typ

Max

Units

Comment

Reference Input

Input Range

Input Impedance

Input Capacitance

2.2

3.2

—

—

—

—

2.6

—

10

V

k Ω

pF

Analog Inputs

Maximum Signal Level

Differential Input Voltage

—

—

—

—

±1

±470/G

V

mV

CH0+,CH0-,CH1+,CH1- to A GND

G = PGA Gain on Channel 0

Range Channel 0

Differential Input Voltage

—

—

±660

mV

Range Channel 1

Input Impedance

Bandwidth

390

—

—

14

—

—

k Ω

kHz

Proportional to 1/MCLK frequency

Proportional to MCLK frequency,

(Notch Frequency)

Oscillator Input

MCLK/256

Frequency Range

MCLK

1

—

4

MHz

Power Specifications

Operating Voltage

4.5

—

5.5

V

AV DD, DV DD

I DD,A

I DD,D

I DD,A

I DD,D

—

—

2.7

1.2

3.0

2.0

mA

mA

AV DD pin only

DV DD pin only

Note 1:

2:

3:

4:

5:

6:

7:

Measurement error = (Energy Measured By Device - True Energy)/True Energy * 100%. Accuracy is

measured with signal (±660 mV) on Channel 1. F OUT0 , F OUT1 pulse outputs. Valid from 45 Hz to 65 Hz.

See typical performance curves for higher frequencies and increased dynamic range.

Does not include internal V REF . Gain = 1, CH0 = 470 mVDC, CH1 = 660 mVDC, difference between

measured output frequency and expected transfer function.

Percent of HF OUT output frequency variation; Includes external V REF = 2.5V, CH1 = 100 mVRMS @

50 Hz, CH2 = 100 mVRMS @ 50 Hz, AV DD = 5V + 1V pp @ 100 Hz. DC PSRR: 5V ±500 mV

Error applies down to 60 degree lead (PF = 0.5 capacitive) and 60 degree lag (PF = 0.5 inductive).

Refer to Section 4.0 “Device Overview” for complete description.

Specified by characterization, not production tested.

1 MCLK period at 3.58 MHz is equivalent to less than <0.005 degrees at 50 or 60 Hz.

TEMPERATURE CHARACTERISTICS

Electrical Specifications: Unless otherwise indicated, V DD = 4.5V – 5.5V, A GND , D GND = 0V.

Parameters

Sym

Min

Typ

Max

Units

Conditions

Temperature Ranges

Specified Temperature Range

T A

-40

—

+85

°C

Operating Temperature Range

Storage Temperature Range

T A

T A

-40

-65

—

—

+125

+150

°C

°C

( Note )

Note:

The MCP3905A/05L/06A operate over this extended temperature range, but with reduced performance. In

any case, the Junction Temperature (T J ) must not exceed the Absolute Maximum specification of +150°C.

DS22011B-page 4

? 2006-2011 Microchip Technology Inc.

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