ade7854 Analog Devices, Inc., ade7854 Datasheet - Page 11

• Manufacturer Part Number: ade7854
• Description: Poly Phase Multifunction Energy Metering Ic With Neutral Current Measurement
• Manufacturer: Analog Devices, Inc.

Preliminary Technical Data
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
Table 6. Pin Function Descriptions
Pin
No.
1,10,11,20,21,30,31,40
2
3
4
5
6
7,8,
9,12,
13,14
15,16
17
RESET
DGND
DVDD
IAP
IAN
PM0
PM1
IBP
NC
NC
10
1
2
3
4
5
6
7
8
9
NC
NC
40
11
Mnemonic
NC
PM0
PM1
DVDD
DGND
IAP, IAN,
IBP, IBN,
ICP, ICN
NC
REF
RESET
HSA
SS
IBN
39
12
IN/OUT
/
MOSI/
ICP
SDA
38
13
MISO/
ADE7854/ADE7858
ICN
HSD
37
14
(not to scale)
Description
These pins are not connected internally.
Power Mode pin 0. This pin should be set to VDD via a 10kΩ pull-up resistor for proper
operation of the ADE7854.
Power Mode pin 1. This pin defines the power mode of the ADE7854 as described in Table 7.
Reset Input, active low.
This pin provides access to the on-chip 2.5V digital LDO. No external active circuitry should
be connected to this pin. This pin should be decoupled with a 4.7 μF capacitor in parallel
with a ceramic 100 nF capacitor.
This provides the ground reference for the digital circuitry in the ADE7854.
Analog Inputs for Current Channel. This channel is used with the current transducers and is
referenced in this document as the current channel. These inputs are fully differential
voltage inputs with a maximum differential level of ±0.5 V. This channel has an internal PGA
for IA, IB and IC.
These pins should be connected to AGND.
This pin provides access to the on-chip voltage reference. The on-chip reference has a
nominal value of 1.2 V ± 0.075% and a maximum temperature coefficient of 50 ppm/°C. An
external reference source with 1.2V ± 8% can also be connected at this pin. In either case,
this pin should be decoupled to AGND with a 10 μF ceramic capacitor. After reset, the on-
TOP VIEW
SCLK/
SCL
NC
36
15
Figure 6. ADE7854 Pin Configuration
HSCLK
CF3/
NC
35
16
Rev. PrC| Page 11 of 71
REF
CF2
34
17
in/out
CF1
VN
33
18
IRQ
VCP
32
19
1
NC
NC
31
20
30
29
28
27
26
25
24
23
22
21
IRQ
CLKOUT
VDD
VAP
VBP
CLKIN
AGND
AVDD
NC
NC
0
ADE7854