ADE7751AN Analog Devices Inc, ADE7751AN Datasheet - Page 5

• Manufacturer Part Number: ADE7751AN
• Description: IC ENERGY METERING DETEC 24-PDIP
• Manufacturer: Analog Devices Inc

Specifications of ADE7751AN

• Rohs Status: RoHS non-compliant
• Input Impedance: 390 KOhm
• Measurement Error: 0.1%
• Voltage - I/o High: 2.4V
• Voltage - I/o Low: 0.8V
• Current - Supply: 3mA
• Voltage - Supply: 4.75 V ~ 5.25 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Through Hole
• Package / Case: 24-DIP (0.300", 7.62mm)
• Meter Type: Single Phase
• Lead Free Status / Rohs Status: Not Compliant

Pin No.
1
2
3
4, 5
6
7, 8
9
10
11
12
REV. 0
Mnemonic
DV
AC/DC
AV
V1A, V1B
V1N
V2N, V2P
RESET
REF
AGND
SCF
DD
DD
IN/OUT
Description
Digital Power Supply. This pin provides the supply voltage for the digital circuitry in the ADE7751.
The supply voltage should be maintained at 5 V
decoupled with a 10 F capacitor in parallel with a ceramic 100 nF capacitor.
High-Pass Filter Select. This logic input is used to enable the HPF in Channel 1 (the current
channel). A Logic 1 on this pin enables the HPF. The associated phase response of this filter has
been internally compensated over a frequency range of 45 Hz to 1 kHz. The HPF filter should be
enabled in energy metering applications.
Analog Power Supply. This pin provides the supply voltage for the analog circuitry in the ADE7751.
The supply should be maintained at 5 V
to minimize power supply ripple and noise at this pin by the use of proper decoupling. This pin
should be decoupled to AGND with a 10 F capacitor in parallel with a ceramic 100 nF capacitor.
Analog Inputs for Channel 1 (Current Channel). These inputs are fully differential voltage inputs
with a maximum signal level of 660 mV with respect to pin V1N for specified operation. The
maximum signal level at these pins is 1 V with respect to AGND. Both inputs have internal ESD
protection circuitry and an overvoltage of 6 V can also be sustained on these inputs without risk of
permanent damage.
Negative Input Pin for Differential Voltage Inputs V1A and V1B. The maximum signal level at this
pin is 1 V with respect to AGND. The input has internal ESD protection circuitry and an overvoltage
of 6 V can also be sustained without risk of permanent damage. This input should be directly con-
nected to the burden resistor and held at a fixed potential, i.e., AGND. See Analog Input section.
Negative and Positive Inputs for Channel 2 (Voltage Channel). These inputs provide a fully differ-
ential input pair. The maximum differential input voltage is 660 mV for specified operation. The
maximum signal level at these pins is 1 V with respect to AGND. Both inputs have internal ESD
protection circuitry and an overvoltage of 6 V can also be sustained on these inputs without risk of
permanent damage.
Reset Pin for the ADE7751. A logic low on this pin will hold the ADCs and digital circuitry in a
reset condition. Bringing this pin logic low will clear the ADE7751 internal registers.
Provides Access to the On-Chip Voltage Reference. The on-chip reference has a nominal value of
2.5 V
be connected at this pin. In either case, this pin should be decoupled to AGND with a 1 F ceramic
capacitor and 100 nF ceramic capacitor.
Provides the Ground Reference for the Analog Circuitry in the ADE7751, i.e., ADCs and Refer-
ence. This pin should be tied to the analog ground plane of the PCB. The analog ground plane is
the ground reference for all analog circuitry, e.g., antialiasing filters, current and voltage trans-
ducers, and more. For good noise suppression, the analog ground plane should only be connected to
the digital ground plane at one point. A star ground configuration will help to keep noisy digital
return currents away from the analog circuits.
Select Calibration Frequency. This logic input is used to select the frequency on the calibration
output CF. Table IV shows how the calibration frequencies are selected.
8% and a typical temperature coefficient of 30 ppm/ C. An external reference source may also
PIN FUNCTION DESCRIPTIONS
REF
RESET
AC/DC
PIN CONFIGURATION
AGND
DV
AV
IN/OUT
V1A
V1B
V1N
V2N
V2P
SCF
DD
DD
10
11
12
1
2
3
4
5
6
7
8
9
(Not to Scale)
ADE7751
TOP VIEW
–5–
24
23
22
21
20
19
18
17
16
15
14
13
F1
F2
CF
DGND
REVP
FAULT
CLKOUT
CLKIN
G0
G1
S0
S1
5% for specified operation. Every effort should be made
5% for specified operation. This pin should be
ADE7751