MCP3905/06
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
2.2
—
2.6
V
Input Impedance
3.2
—
—
kΩ
Input Capacitance
—
—
10
pF
Analog Inputs
Maximum Signal Level
—
—
±1
V
CH0+,CH0-,CH1+,CH1- to A
GND
Differential Input Voltage
—
—
±470/G
mV
G = PGA Gain on Channel 0
Range Channel 0
Differential Input Voltage
—
—
±660
mV
Range Channel 1
Input Impedance
390
—
—
kΩ
Proportional to 1/MCLK frequency
Bandwidth
—
14
—
kHz
Proportional to MCLK frequency,
(Notch Frequency)
MCLK/256
Oscillator Input
Frequency Range
MCLK
1
—
4
MHz
Power Specifications
Operating Voltage
4.5
—
5.5
V
AV
DD,
DV
DD
I
DD,A
I
DD,A
—
2.7
3.0
mA
AV
DD
pin only
I
DD,D
I
DD,D
—
1.2
2.0
mA
DV
DD
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. F
OUT0
, F
OUT1
pulse outputs. Valid from 45 Hz to 65 Hz.
See
Section 2.0 “Typical Performance Curves”
for higher frequencies and increased dynamic range.
2:
Does not include internal V
REF
. Gain = 1, CH0 = 470 mVDC, CH1 = 660 mVDC, difference between
measured output frequency and expected transfer function.
3:
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.
4:
Error applies down to 60° lead (PF = 0.5 capacitive) and 60° 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.
8:
Gain error match is measured from CH0 G = 1 to any other gain setting.
TEMPERATURE CHARACTERISTICS
Electrical Specifications:
Unless otherwise indicated, V
DD
= 4.5V – 5.5V, A
GND
, D
GND
= 0V.
Parameters
Temperature Ranges
Specified Temperature Range
Operating Temperature Range
Storage Temperature Range
Note:
T
A
T
A
T
A
-40
-40
-65
—
—
—
+85
+125
+150
°C
°C
°C
Sym
Min
Typ
Max
Units
Conditions
The MCP3905/06 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.
©
2007 Microchip Technology Inc.
DS21948D-page 3
MICROCHIP [ MICROCHIP TECHNOLOGY ]
