MCP3905/06
DS21948D-page 4 © 2007 Microchip Technology Inc.
FIGURE 1-1: Output Timings for Pulse Outputs and Negative Power Pin.
TIMING CHARACTERISTICS
Electrical Specifications: Unless otherwise indicated, all parameters apply at AV
DD
= DV
DD
= 4.5V – 5.5V,
A
GND
, D
GND
= 0V, MCLK = 3.58 MHz; T
A
= -40°C to +85°C.
Parameter Sym Min Typ Max Units Comment
Frequency Output
F
OUT0
and F
OUT1
Pulse Width
(Logic-Low)
t
FW
275 ms 984376 MCLK periods
(Note 1)
HF
OUT
Pulse Width t
HW
90 ms 322160 MCLK periods
(Note 2)
F
OUT0
and F
OUT1
Pulse Period t
FP
Refer to Equation 4-1 s
HF
OUT
Pulse Period t
HP
Refer to Equation 4-2 s
F
OUT0
to F
OUT1
Falling-Edge Time t
FS2
0.5 t
FP
F
OUT0
to F
OUT1
Min Separation t
FS
4/MCLK
F
OUT0
and F
OUT1
Output High Voltage V
OH
4.5 ——VI
OH
= 10 mA, DV
DD
= 5.0V
F
OUT0
and F
OUT1
Output Low Voltage V
OL
——0.5 V I
OL
= 10 mA, DV
DD
= 5.0V
HF
OUT
Output High Voltage V
OH
4.0 ——VI
OH
= 5 mA, DV
DD
= 5.0V
HF
OUT
Output Low Voltage V
OL
——0.5 V I
OL
= 5 mA, DV
DD
= 5.0V
High-Level Input Voltage
(All Digital Input Pins)
V
IH
2.4 ——VDV
DD
= 5.0V
Low-Level Input Voltage
(All Digital Input Pins)
V
IL
——0.85 V DV
DD
= 5.0V
Input Leakage Current
——±3 µA V
IN
= 0, V
IN
= DV
DD
Pin Capacitance ——10 pF Note 3
Note 1: If output pulse period (t
FP
) falls below 984376*2 MCLK periods, then t
FW
= 1/2 t
FP
.
2: If output pulse period (t
HP
) falls below 322160*2 MCLK periods, then t
HW
= 1/2 t
HP
.
3: Specified by characterization, not production tested.
F
OUT0
t
FP
F
OUT1
HF
OUT
t
FW
t
HP
t
HW
t
FS
t
FS2
NEG
© 2007 Microchip Technology Inc. DS21948D-page 5
MCP3905/06
2.0 TYPICAL PERFORMANCE CURVES
Note: Unless otherwise specified, DV
DD
, AV
DD
= 5V; A
GND
, D
GND
= 0V; V
REF
= Internal, HPF = 1 (AC mode),
MCLK = 3.58 MHz.
FIGURE 2-1: Measurement Error,
Gain = 8, PF = 1.
FIGURE 2-2: Measurement Error,
Gain = 16, PF = 1.
FIGURE 2-3: Measurement Error,
Gain = 32, PF = 1.
FIGURE 2-4: Measurement Error,
Gain = 8, PF = 0.5.
FIGURE 2-5: Measurement Error,
Gain = 16, PF = 0.5.
FIGURE 2-6: Measurement Error,
Gain = 32, PF = 0.5.
Note: The graphs and tables provided following this note are a statistical summary based on a limited number of
samples and are provided for informational purposes only. The performance characteristics listed herein
are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
-0.5
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
0.0000 0.0001 0.0010 0.0100 0.1000
CH1 Vp-p Amplitude (V)
Measurement Error
+85°C
+25°C
-40°C
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
0.0000 0.0001 0.0010 0.0100 0.1000
CH1 Vp-p Amplitude (V)
Measurement Error
+85°C
+25°C
- 40°C
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
0.0000 0.0001 0.0010 0.0100 0.1000
CH1 Vp-p Amplitude (V)
Measurement Error
+85°C
+25°C
- 40°C
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
0.6
0.0000 0.0001 0.0010 0.0100 0.1000
CH1 Vp-p Amplitude (V)
Measurement Error
+85°C
+25°C
-40°C
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.0000 0.0001 0.0010 0.0100 0.1000
CH1 Vp-p Amplitude (V)
Measurement Error
+85°C
+25°C
-40°C
-1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1
0.0000 0.0001 0.0010 0.0100 0.1000
CH1 Vp-p Amplitude (V)
Measurement Error
+85°C
+25°C
-40°C
MCP3905/06
DS21948D-page 6 © 2007 Microchip Technology Inc.
Note: Unless otherwise specified, DV
DD
, AV
DD
= 5V; A
GND
, D
GND
= 0V; V
REF
= Internal, HPF = 1 (AC mode),
MCLK = 3.58 MHz.
FIGURE 2-7: Measurement Error,
Gain = 1, PF = 1.
FIGURE 2-8: Measurement Error,
Gain = 2, PF = 1.
FIGURE 2-9: Measurement Error,
Gain = 1, PF = + 0.5.
FIGURE 2-10: Measurement Error,
Gain = 2, PF = + 0.5.
-0.5
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
0.0001 0.0010 0.0100 0.1000 1.0000
CH0 Vp-p Amplitude (V)
Measurement Error
+85°C
+25°C
- 40°C
-0.5
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
0.0001 0.0010 0.0100 0.1000 1.0000
CH0 Vp-p Amplitude (V)
Measurement Error
+85°C
+25°C
- 40°C
-0.5
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
0.0001 0.0010 0.0100 0.1000 1.0000
CH1 Vp-p Amplitude (V)
Measurement Error
+85°C
+25°C
-40°C
-0.5
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
0.0001 0.0010 0.0100 0.1000 1.0000
CH1 Vp-p Amplitude (V)
Measurement Error
+85°C
+25°C
-40°C

MCP3905T-I/SS

Mfr. #:
Manufacturer:
Description:
IC ENERGY METER 24-SSOP
Lifecycle:
New from this manufacturer.
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