MCP3905L Microchip Technology, MCP3905L Datasheet
MCP3905L
Manufacturer Part Number
MCP3905L
Description
(MCP3905A / MCP3906A) Energy Metering ICs
Manufacturer
Microchip Technology
Datasheet
1.MCP3905L.pdf
(26 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MCP3905LT-I/SS
Manufacturer:
MICROCHIP
Quantity:
12 000
www.DataSheet4U.com
Features
• Supplies active (real) power measurement for
• Supports IEC 62053 International Energy
• Two multi-bit, DAC, second-order, 16-bit, Delta-
• Reduced pulse width of calibration output
• Increased output frequency constant options for
• 0.1% typical measurement error over 500:1
• 0.1% typical measurement error over 1000:1
• Programmable Gain Amplifier (PGA) for small sig-
• Ultra-low drift on-chip reference: 15 ppm/°C (typ.)
• Direct drive for electromagnetic mechanical
• Low I
• Tamper output pin for negative power indication
• Industrial Temperature Range: -40°C to +85°C
• Supplies instantaneous real power on HF
Functional Block Diagram
© 2006 Microchip Technology Inc.
Energy Metering ICs with Active Real Power Pulse Output
single-phase, residential energy metering
Metering Specification and legacy IEC
1036/61036/687 Specifications
Sigma Analog-to-Digital Converters (ADCs)
frequency and mechanical counter drive for low
power meter designs (MCP3905L)
meter design (MCP3905L)
dynamic range (MCP3905A / MCP3905L)
dynamic range (MCP3906A)
nal inputs supports low value shunt current sen-
sor:
- 16:1 PGA - MCP3905A / MCP3905L
- 32:1 PGA - MCP3906A
counter and two-phase stepper motors
meter calibration
REFIN/
CH0+
OUT
CH1+
CH0-
CH1-
DD
of 4 mA (typ.)
Reference
G0 G1
+
–
+
–
2.4V
PGA
Multi-level
Multi-level
ΔΣ ADC
ΔΣ ADC
MCP3905A/05L/06A
16-bit
16-bit
OUT
for
HPF1
HPF1
HPF
Description
The MCP3905A/05L/06A devices are energy-metering
ICs designed to support the IEC 62053 international
metering standard specification. They supply a
frequency output proportional to the average active real
power,
proportional to the instantaneous power for meter
calibration. The MCP3905L offers reduced pulse width
of calibration output frequency and mechanical counter
drive for lower power meter designs. They include two
16-bit, Delta-Sigma ADCs for a wide range of I
I
designs. It includes an ultra-low drift voltage reference
with < 15 ppm/°C through a specially designed band
gap temperature curve for the minimum gradient across
the industrial temperature range. A fixed-function DSP
block is on-chip for active real-power calculation. A no-
load threshold block prevents any current creep
measurements. A Power-On Reset (POR) block
restricts
situations. These accurate energy metering ICs with
high field reliability are available in the industry standard
pinout.
Package Type
MAX
X
24-Pin SSOP
OSC1 OSC2
currents and/or small shunt (<200 µOhms) meter
as
LPF1
meter
POR
well
REFIN/OUT
MCLR
performance
DV
CH0+
CH1+
F2
AV
A
CH0-
CH1-
as
HPF
GND
NC
DD
DD
F2
F1
a
10
11
12
1
2
3
4
9
5
6
7
8
F0
higher-frequency
conversion
HF
E-to-F
24
23
22
21
20
19
18
17
16
15
14
13
OUT
during
F
OUT1
F
F
HF
D
NEG
NC
OSC2
OSC1
G0
G1
F0
F1
MCLR
OUT0
OUT1
DS22011A-page 1
GND
OUT
F
OUT0
low-voltage
NEG
output
B
and
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