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MCP3905L-ISS

Energy Metering ICs with Active Real Power Pulse Output

Microchip Technology 

MCP3905A/05L/06A

ELECTRICAL CHARACTERISTICS (CONTINUED)

Electrical Specifications: Unless otherwise indicated, all parameters apply at AVDD = DVDD = 4.5V – 5.5V,

Internal VREF, HPF turned on (AC mode), AGND, DGND = 0V, MCLK = 3.58 MHz; TA = -40°C to +85°C.

Parameter

Sym

Min Typ.

Max Units

Comment

Reference Input

Input Range

2.2

—

2.6

V

Input Impedance

3.2

—

—

kΩ

Input Capacitance

—

—

10

pF

Analog Inputs

Maximum Signal Level

Differential Input Voltage

Range Channel 0

—

—

±1

V CH0+,CH0-,CH1+,CH1- to AGND

—

— ±470/G mV G = PGA Gain on Channel 0

Differential Input Voltage

Range Channel 1

—

—

±660

mV

Input Impedance

390 —

—

kΩ Proportional to 1/MCLK frequency

Bandwidth

(Notch Frequency)

—

14

—

kHz Proportional to MCLK frequency,

MCLK/256

Oscillator Input

Frequency Range

MCLK

1

—

4

MHz

Power Specifications

Operating Voltage

4.5

—

5.5

V

AVDD, DVDD

IDD,A

IDD,A

—

2.7

3.0

mA AVDD pin only

IDD,D

IDD,D

—

1.2

2.0

mA DVDD pin only

Note 1: Measurement error = (Energy Measured By Device - True Energy)/True Energy * 100%. Accuracy is

measured with signal (±660 mV) on Channel 1. FOUT0, FOUT1 pulse outputs. Valid from 45 Hz to 65 Hz.

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

2: Does not include internal VREF. Gain = 1, CH0 = 470 mVDC, CH1 = 660 mVDC, difference between

measured output frequency and expected transfer function.

3: Percent of HFOUT output frequency variation; Includes external VREF = 2.5V, CH1 = 100 mVRMS @

50 Hz, CH2 = 100 mVRMS @ 50 Hz, AVDD = 5V + 1Vpp @ 100 Hz. DC PSRR: 5V ±500 mV

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

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

6: Specified by characterization, not production tested.

7: 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, VDD = 4.5V – 5.5V, AGND, DGND = 0V.

Parameters

Sym Min Typ Max Units

Conditions

Temperature Ranges

Specified Temperature Range

TA -40 — +85

°C

Operating Temperature Range

TA

-40 — +125

°C (Note)

Storage Temperature Range

TA

-65 — +150

°C

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

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

© 2006 Microchip Technology Inc.

DS22011A-page 3

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