ade7753 Analog Devices, Inc., ade7753 Datasheet - Page 7

• Manufacturer Part Number: ade7753
• Description: Active And Apparent Energy Metering Ic With Di/dt Sensor Interface
• Manufacturer: Analog Devices, Inc.

REV. PrF 10/02
Pin No.
15
16
17
18
19
20
MNEMONIC
C L K I N
C L K O U T
C S
SC LK
D O U T
D I N
PRELIMINARY TECHNICAL DATA
Master clock for ADCs and digital signal processing. An external clock can be pro-
vided at this logic input. Alternatively, a parallel resonant AT crystal can be connected
across CLKIN and CLKOUT to provide a clock source for the ADE7753. The clock
frequency for specified operation is 3.579545MHz. Ceramic load capacitors of between
22pF and 33pF should be used with the gate oscillator circuit. Refer to crystal manu-
facturers data sheet for load capacitance requirements.
A crystal can be connected across this pin and CLKIN as described above to provide a
clock source for the ADE7753. The CLKOUT pin can drive one CMOS load when
either an external clock is supplied at CLKIN or a crystal is being used.
Chip Select. Part of the four wire SPI Serial Interface. This active low logic input al-
lows the ADE7753 to share the serial bus with several other devices. See ADE7753 Serial
Interface.
Serial Clock Input for the synchronous serial interface. All Serial data transfers are
synchronized to this clock—see ADE7753 Serial Interface. The SCLK has a schmitt-trigger
input for use with a clock source which has a slow edge transition time, e.g., opto-
isolator outputs.
Data Output for the Serial Interface. Data is shifted out at this pin on the rising edge of
SCLK. This logic output is normally in a high impedance state unless it is driving data
onto the serial data bus—see ADE7753 Serial Interface..
Data Input for the Serial Interface. Data is shifted in at this pin on the falling edge of
SCLK—see ADE7753 Serial Interface..
REF
RESET
DGND
AGND
DVDD
AVDD
IN/OUT
V1N
V2N
V1P
V2P
PIN CONFIGURATION
10
1
2
3
4
5
6
7
8
9
SSOP Packages
(Not to Scale)
TOP VIEW
ADE7753
–7–
DESCRIPTION
13
16
14
20
19
18
17
15
12
11
DIN
DOUT
SCLK
CS
CLKOUT
CLKIN
IRQ
SAG
ZX
CF
ADE7753