Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

AD71056 Datasheet(PDF) 7 Page - Analog Devices

Part # AD71056
Description  Energy Metering IC with Integrated Oscillator and Reverse Polarity Indication
Download  20 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD71056 Datasheet(HTML) 7 Page - Analog Devices

Back Button AD71056 Datasheet HTML 3Page - Analog Devices AD71056 Datasheet HTML 4Page - Analog Devices AD71056 Datasheet HTML 5Page - Analog Devices AD71056 Datasheet HTML 6Page - Analog Devices AD71056 Datasheet HTML 7Page - Analog Devices AD71056 Datasheet HTML 8Page - Analog Devices AD71056 Datasheet HTML 9Page - Analog Devices AD71056 Datasheet HTML 10Page - Analog Devices AD71056 Datasheet HTML 11Page - Analog Devices Next Button
Zoom Inzoom in Zoom Outzoom out
 7 / 20 page
background image
AD71056
Rev. A | Page 7 of 20
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
VDD 1
V2P 2
V2N 3
V1N 4
F1
16
F2
15
CF
14
DGND
13
V1P 5
REVP
12
AGND 6
RCLKIN
11
REFIN/OUT 7
S0
10
SCF 8
S1
9
AD71056
TOP VIEW
(Not to Scale)
Figure 3. Pin Configuration
Table 4. Pin Function Descriptions
Pin No.
Mnemonic
Description
1
VDD
Power Supply. This pin provides the supply voltage for the circuitry in the AD71056. Maintain the supply
voltage at 5 V ± 5% for specified operation. Decouple this pin with a 10 μF capacitor in parallel with a ceramic
100 nF capacitor.
2, 3
V2P, V2N
Analog Inputs for Channel V2 (Voltage Channel). These inputs provide a fully differential input pair. The
maximum differential input voltage is ±165 mV for specified operation. Both inputs have internal ESD
protection circuitry; an overvoltage of ±6 V can be sustained on these inputs without risk of permanent
damage.
4, 5
V1N, V1P
Analog Inputs for Channel V1 (Current Channel). These inputs are fully differential voltage inputs with a
maximum signal level of ±30 mV with respect to the V1N pin for specified operation. Both inputs have
internal ESD protection circuitry and, in addition, an overvoltage of ±6 V can be sustained on these inputs
without risk of permanent damage.
6
AGND
Analog Ground. This pin provides the ground reference for the analog circuitry in the AD71056, that is, the ADCs
and reference. Tie this pin to the analog ground plane of the PCB. The analog ground plane is the ground
reference for all analog circuitry, such as antialiasing filters, current and voltage sensors, and so forth. For
accurate noise suppression, connect the analog ground plane to the digital ground plane at only one point. A
star ground configuration helps to keep noisy digital currents away from the analog circuits.
7
REFIN/OUT
Reference Voltage. The on-chip reference has a nominal value of 2.45 V and a typical temperature coefficient
of 20 ppm/°C. An external reference source can also be connected at this pin. In either case, decouple this pin
to AGND with a 1 μF tantalum capacitor and a 100 nF ceramic capacitor. The internal reference cannot be
used to drive an external load.
8
SCF
Select Calibration Frequency. This logic input selects the frequency on the Calibration Output CF. Table 7
shows calibration frequency selections.
9, 10
S1, S0
Conversion Frequency Logic Input Selection. These logic inputs select one of four possible frequencies for the
digital-to-frequency conversion. With this logic input, designers have greater flexibility when designing an
energy meter. Table 5 shows conversion frequency selections.
11
RCLKIN
On-Chip Clock Enabler. To enable the internal oscillator as a clock source to the chip, a precise low
temperature drift resistor at a nominal value of 6.2 kΩ must be connected from this pin to DGND.
12
REVP
Negative Power Indicator. This logic output goes high when negative power is detected, such as when the
phase angle between the voltage and current signals is greater than 90°. This output is not latched and is
reset when positive power is once again detected. The output goes high or low at the same time that a pulse
is issued on CF.
13
DGND
Digital Ground. This pin provides the ground reference for the digital circuitry in the AD71056, that is, the
multiplier, filters, and digital-to-frequency converter. Tie this pin to the digital ground plane of the PCB. The
digital ground plane is the ground reference for all digital circuitry, for example, counters (mechanical and
digital), MCUs, and indicator LEDs. For accurate noise suppression, connect the analog ground plane to the
digital ground plane at one point only—a star ground.
14
CF
Calibration Frequency Logic Output. The CF logic output provides instantaneous real power information. This
output is for calibration purposes (also see the SCF pin description).
15, 16
F2, F1
Low Frequency Logic Outputs. F1 and F2 supply average real power information. The logic outputs can be
used to directly drive electromechanical counters and 2-phase stepper motors. See the Transfer Function
section.


Similar Part No. - AD71056

ManufacturerPart #DatasheetDescription
logo
Analog Devices
AD71056 AD-AD71056_15 Datasheet
413Kb / 20P
   Energy Metering IC with Integrated Oscillator and Reverse Polarity Indication
REV. A
More results

Similar Description - AD71056

ManufacturerPart #DatasheetDescription
logo
Analog Devices
AD71056 AD-AD71056_15 Datasheet
413Kb / 20P
   Energy Metering IC with Integrated Oscillator and Reverse Polarity Indication
REV. A
ADE7769 AD-ADE7769_15 Datasheet
385Kb / 20P
   Energy Metering IC with Integrated Oscillator and No-Load Indication
REV. A
ADE7769 AD-ADE7769 Datasheet
389Kb / 20P
   Energy Metering IC with Integrated Oscillator and No-Load Indication
REV. A
ADE7757 AD-ADE7757 Datasheet
534Kb / 14P
   Energy Metering IC with Integrated Oscillator
REV. PrC.
ADE7757 AD-ADE7757_15 Datasheet
218Kb / 16P
   Energy Metering IC with Integrated Oscillator
REV. A
ADE7762 AD-ADE7762_15 Datasheet
424Kb / 28P
   Polyphase Energy Metering IC with Phase Drop Indication
REV. 0
ADE7768 AD-ADE7768_15 Datasheet
405Kb / 20P
   Energy Metering IC with Integrated Oscillator and Positive Power Accumulation
REV. A
ADE7762 AD-ADE7762 Datasheet
856Kb / 28P
   Polyphase Energy Metering IC with Phase Drop Indication
Rev. PrB
ADE7768 AD-ADE7768 Datasheet
404Kb / 20P
   Energy Metering IC with Integrated Oscillator and Positive Power Accumulation
REV. A
ADE9153B AD-ADE9153B Datasheet
68Kb / 2P
   Energy Metering IC
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com