7604-C7 Data Sheet - EM Microelectronic

EM MICROELECTRONIC - MARIN SA
EM7604-C7
Low Power Crystal Oscillator 32.768 kHz
Description
Features
The EM7604-C7 is a very low power crystal oscillator, which
consists of a 32.768 kHz tuning fork crystal and an
advanced CMOS oscillator circuit assembled in the same
ultra small, cost-effective SMD ceramic package C7. No
external components are required.
It combines excellent oscillator stability with a very low
power consumption of typ. 300nA, guaranteed over a very
wide supply voltage and temperature range.
The output frequency is synchronized with signal on input
Clock Enable CLKEN. The frequency output CLKOUT is
enabled by connecting Clock Enable pin CLKEN to VDD.
Connecting CLKEN to Vss, disables the frequency and the
output CLKOUT is at Low State.
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Very low power consumption typ. 300nA
Wide supply voltage range: 1.2V to 5.5V
Operating temperature range: -10°C to +85°C.
Very tight frequency tolerances: ± 20ppm
Excellent oscillator stability: 0.2 ppm/V
Synchronised output after Enable/Disable
Low aging
High shock and vibration resistant
All-in-one-package solution
Miniature ceramic package for SMD mounting, package
height 1.0mm
 100% lead free, RoHS - compliant
Typical Applications
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General purpose clock generator for digital systems
Clock drivers for Real Time Clocks
Timekeeping in network servers and computers
Electricity, gas and water metering
Portable field communication
Mobile phone
Block Diagram
VDD
4
REGULATION
OSCILLATOR
CLKEN
3
OUTPUT
CONTROL
1
CLKOUT
2
VSS
Pin Connection Top View
Copyright 2014, EM Microelectronic-Marin SA
7604-C7-DS.doc, Version 2.1, 13-Oct-14
Pin
Connection
1
CLKOUT
2
VSS
3
CLKEN
Output Enable
4
VDD
Positive Supply Voltage
1
Frequency Output
Negative Supply Voltage
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420005-A01, 2.0
EM7604-C7
Absolute Maximum Ratings
Parameter
Voltage at VDD to VSS
Minimum voltage
Maximum voltage
Storage temperature range
Maximum soldering
Handling Procedures
This device has built-in protection against high static
voltages or electric fields; however, anti-static precautions
must be taken as for any other CMOS component. Unless
otherwise specified, proper operation can only occur when
all terminal voltages are kept within the voltage range.
Unused inputs must always be tied to a defined logic
voltage level.
Symbol
Conditions
VDD
-0.3V to +6V
VMIN
VSS – 0.3V
VMAX
VDD + 0.3V
TSTG -55°C to +150°C
TSmax
260°C x 20s
Stresses above these listed maximum ratings may cause
permanent damages to the device. Exposure beyond
specified operating conditions may affect device reliability
or cause malfunction.
Operating Conditions
Parameter
Supply voltage
Operating temperature
Symbol
VDD
TA
Min
1.2
-10
Max
5.5
+85
Unit
V
°C
Min
Typ
Max
Unit
1.2
3.0
300
250
750
5.5
550
500
1000
V
nA
nA
nA
650
900
nA
Electrical Characteristics
VDD = 3.0 V; VSS = 0 V; TA = 25 °C; unless otherwise specified.
Parameter
Symbol
Conditions
Supply
Supply voltage range
Mean current consumption
(Note 1)
Oscillator + Quartz
Output frequency
Frequency tolerance (Note 2)
Starting voltage
Start-up time
Voltage coefficient
Aging first year @ 25°C
Temperature coefficient
VDD
IDD
VDD = 5.0V, CLKEN at VSS
VDD = 3.0V, CLKEN at VSS
VDD = 5.0V, CLKEN at VSS,
TA = -10 to +85 °C
VDD = 3.0V, CLKEN at VSS
TA = -10 to +85 °C
fO
32.768
-0.035
0.8
±2
±3
-0.031
kHz
ppm
V
sec
ppm/V
ppm
2
ppm/°C
70
70
50
VSS + 0.4
100
100
60
V
V
ns
ns
%
0.2 x VDD
VDD
V
V
±20
VST
TST
f/fO* VDD
f/fO

1.5 V ≤ VDD ≤ 5.5 V
VOH
VOL
tr
tf
IOH = -1.0 mA
IOL = 1.0 mA
CL = 15 pF, 10% to 90% VDD
CL = 15 pF, 10% to 90% VDD
Output driver CLKOUT
Output voltage high
Output voltage low
Output rise time
Output fall time
Duty cycle
Within 3 seconds
1.2
0.4
± 0.2
-0.039
VDD - 0.4
40
Output Enable CLKEN
Input voltage low
Input voltage high
VIL
VIH
VSS
0.8 x VDD
Note 1: The current consumption when the output clock is enabled (CLKEN pin at VDD) is a function of the load capacitance on
the CLKOUT pin, the output frequency fOUT = 32768Hz and the supply voltage VDD.
The additional consumption for a given load can be calculated from: ΔI DD = CLOAD x VDD x fOUT
Note 2: Tighter tolerance on request.
Environmental Characteristics
Parameter
Shock resistance
Vibration resistance
Symbol
f/fO
f/fO
Copyright 2014, EM Microelectronic-Marin SA
7604-C7-DS.doc, Version 2.1, 13-Oct-14
Conditions
5000 g, 0.3 ms, ½ sine
20 g / 10 – 2000Hz
2
Maximum Deviation
±5
±5
Unit
ppm
ppm
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420005-A01, 2.0
EM7604-C7
Timing Waveforms
32768Hz
CLKEN
CLKOUT
tCKH
tCKL
32768Hz
CLKEN
CLKOUT
tCKH
tCKL = 0
VIH
CLKEN
VIL
CLKOUT
tCKL
tCKH
Application Note
Using EM7604 with disturbed Supply Voltage on VDD
If the power supply of the EM7604 (VDD) is disturbed, the circuit must be protected against VDD fast transients. As
the oscillator has a very low power consumption, the clock generation is sensitive to fast supply changes and clock
pulses could be lost.
If in the application, positive or negative VDD fast slopes may occur, an RC low pass filter in the VDD supply
connection of the EM7604 must be used, according to the following figure:
Typical Application Schematic
R
+
C
VDD_EXT
VDD
XI
Crystal
VDD
EM7604-C7
µC
XO
(Application)
CLKOUT
CLKEN
GPIO
VSS
VSS
VSS = 0V
The RC filter is composed of a capacitor (C) and resistor (R) implemented per example by a 1k resistor and a
10µF capacitor. The resistor and the capacitor can be adapted if needed.
Copyright 2014, EM Microelectronic-Marin SA
7604-C7-DS.doc, Version 2.1, 13-Oct-14
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420005-A01, 2.0
EM7604-C7
Frequency Temperature Characteristics
Package Information:
The termination is with Au flashed pads for SMD mounting.
Ordering Information
Please make sure to quote the exact Part Number when ordering.
Part Number
EM7604V20SCP4B+
Version
Frequency
Tolerance
Package
Type
Marking
V20
± 20 ppm
SCP – 4 pin
OV-7604-C7
Delivery Form
12mm tape, 7” reel with 3’000 packages
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supporting systems, where malfunction of such EM products might result in damage to and/or injury or death of persons is expressly prohibited, as EM
products are neither destined nor qualified for use as components in such medical devices and/or medical applications. The prohibited use of EM
products in such medical devices and/or medical applications is exclusively at the risk of the customer
Copyright 2014, EM Microelectronic-Marin SA
7604-C7-DS.doc, Version 2.1, 13-Oct-14
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420005-A01, 2.0