ADE7760ARSRL Analog Devices Inc, ADE7760ARSRL Datasheet - Page 8

• Manufacturer Part Number: ADE7760ARSRL
• Description: IC ENERGY METER W/OCFD 20SSOP TR
• Manufacturer: Analog Devices Inc

Specifications of ADE7760ARSRL

• Rohs Status: RoHS non-compliant
• Input Impedance: 400 KOhm
• Measurement Error: 0.1%
• Voltage - I/o High: 2.4V
• Voltage - I/o Low: 0.8V
• Current - Supply: 4mA
• Voltage - Supply: 4.75 V ~ 5.25 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-SSOP (0.200", 5.30mm Width)
• Meter Type: Single Phase
• Lead Free Status / Rohs Status: Not Compliant

ADE7760
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
Table 4. Pin Function Descriptions
Pin No.
1
2, 3
4
5
6
7
8
9
10
11, 12
13
14
Mnemonic
V
V
V
V
V
NC
AGND
REF
SCF
S1, S0
INT
RCLKIN
DD
1A
1N
2N
2P
, V
IN/OUT
1B
Description
Power Supply. This pin provides the supply voltage for the digital circuitry in the ADE7760. The supply
voltage should be maintained at 5 V ± 5% for specified operation. This pin should be decoupled with a
10 µF capacitor in parallel with a ceramic 100 nF capacitor.
Analog Inputs for Channel 1 (Current Channel). These inputs are fully differential voltage inputs with
maximum differential input signal levels of ±660 mV with respect to V
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 V
±1 V with respect to AGND. The input has internal ESD protection circuitry, and an overvoltage of ±6 V
can also be sustained on these inputs without risk of permanent damage. The input should be directly
connected to the burden resistor and held at a fixed potential, that is, AGND. See the Analog Inputs
section.
Negative Input Pin for Differential Voltage Input V
respect to AGND. The input has internal ESD protection circuitry, and an overvoltage of ±6 V can also be
sustained on these inputs without risk of permanent damage. The input should be held at a fixed
potential, that is, AGND. See the Analog Inputs section.
Analog Inputs for Channel 2 (Voltage Channel). This input is fully differential voltage input with
maximum differential input signal levels of ±660 mV with respect to V
maximum signal level at these pins is ±1 V with respect to AGND. This input has internal ESD protection
circuitry, and an overvoltage of ±6 V can also be sustained on these inputs without risk of permanent
damage.
Not Connected. Nothing should be connected to this pin.
This pin provides the ground reference for the analog circuitry in the ADE7760, that is, ADCs and
reference. 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 such as antialiasing filters, and current and voltage transducers.
For good noise suppression, the analog ground plane should be connected only to the digital ground
plane at the DGND pin.
This pin provides access to the on-chip voltage reference. The on-chip reference has a nominal value of
2.5 V ± 8% and a typical temperature coefficient of 30 ppm/°C. An external reference source can also be
connected at this pin. In either case, this pin should be decoupled to AGND with a 1 μF ceramic
capacitor and 100 nF ceramic capacitor.
Select Calibration Frequency. This logic input is used to select the frequency on the calibration output
CF. Table 6 shows how the calibration frequencies are selected.
These logic inputs are used to select one of four possible frequencies for the digital-to-frequency
conversion. This offers the designer greater flexibility when designing the energy meter. See the
Selecting a Frequency for an Energy Meter Application section.
This pin is internally used and should be connected to DGND.
To enable the internal oscillator as a clock source on the chip, a precise low temperature drift resistor at
nominal value of 6.2 kΩ must be connected from this pin to DGND.
REF
AGND
IN/OUT
Figure 3. Pin Configuration (SSOP)
SCF
V
V
V
V
V
V
NC
DD
1A
1B
1N
2N
2P
10
1
2
3
4
5
6
7
8
9
NC = NO CONNECT
Rev. 0 | Page 8 of 24
(Not to Scale)
ADE7760
TOP VIEW
20
19
18
17
16
15
14
13
12
11
F1
F2
CF
DGND
REVP
FAULT
RCLKIN
INT
S0
S1
2P
1A
. The maximum signal level at this pin is ±1 V with
and V
1B
. The maximum signal level at this pin is
1N
2N
for specified operation. The
for specified operation. The