EM7604V1SP6B [EMMICRO]
Low Power Crystal Oscillator 32.768 kHz; 低功耗晶振32.768千赫
| 型号： | EM7604V1SP6B |
| 厂家： | 
EM MICROELECTRONIC - MARIN SA |
| 描述： | Low Power Crystal Oscillator 32.768 kHz |
| 文件： | 总4页 (文件大小：245K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
R
EM MICROELECTRONIC - MARIN SA
EM7604
Low Power Crystal Oscillator 32.768 kHz
Description
Features
The EM7604 is an advanced low power CMOS circuit
intended to be used together with a 32.768 kHz tuning fork
crystal as a low frequency clock oscillator.
Except the crystal, no other external components are
required.
In order to achieve a high frequency accuracy, the matched
crystals should have a ± 20ppm tolerance or tighter.
Very low power consumption, as low as 250nA, is
Very low power consumption: typ. 250nA
On chip integrated oscillation capacitor: CL=8pF
Matched low cost SMD quartz available from Micro Crystal
Compatibility with crystals having high series resistance
Very tight frequency tolerance
Excellent oscillator stability: 0.2ppm/V
guaranteed over
temperature ranges.
Offered in a small SOT23-6 package, the EM7604 is a
completely lead free product.
a
very wide supply voltage and
Wide supply voltage range: 1.2V to 5.5V
Operating temperature range: -40°C to +125°C
Small SOT23-6 package
100% lead free, RoHS – compliant
Block Diagram
Applications
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
VDD
REGULATION
Mobile phone
Solution for problems with embedded quartz oscillators
OSCILLATOR
OUTPUT
OUT
OE
CONTROL
Pin Assignment
VSS
Pin
Connection
Assignment
1
2
3
4
5
6
OSCOUT
VSS
Oscillator Output
Negative Supply
Voltage
SOT23
EM7604
OSCIN
OE
Oscillator Input
Output Enable
1
2
3
6
5
4
OSCOUT
VSS
OUT
VDD
OE
Positive Supply
Voltage
VDD
OSCIN
OUT
Frequency Output
1
www.emmicroelectronic.com
Copyright © 2006, EM Microelectronic-Marin SA
03/06 – rev.A
R
EM7604
Absolute Maximum Ratings
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.
Parameter
Voltage at VDD to VSS
Minimun voltage
Maximun voltage
Storage Temperature Range
Maximum soldering
Symbol
Conditions
-0.3V to +6V
VSS – 0.3V
VDD
VMIN
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 Min
Max Unit
5.5
+125 °C
VDD
TA
1.2
-40
V
Electrical Characteristics
Unless otherwise specified: VDD= 3.0V, VSS= 0V, TA=25°C and RS= 60kΩ
Parameter
Symbol
VDD
IDD1
Conditions
Min
1.2
Typ
3.0
300
250
250
750
Max
Unit
V
nA
nA
nA
nA
Supply voltage range
Current consumption
(Note1)
5.5
550
500
500
1000
VDD= 5.0V, OE at VSS
VDD= 3.0V, OE at VSS
VDD= 2.0V, OE at VSS
VDD= 5.0V, OE at VSS
Top=-40 to +85°C
VDD= 3.0V, OE at VSS
Top=-40 to +85°C
VDD= 2.0V, OE at VSS
Top=-40 to +85°C
650
650
900
900
nA
nA
Oscillator
Input Capacitance
CIN
COUT
16
16
pF
pF
Output Capacitance
Start Up Voltage
Start Up Time
Frequency Stability against
Supply Voltage Variations
Input
VSTARTUP tSTART < 3s
tSTARTUP
Δf/f *ΔV
1.2
0.4
0.2
0.8
2
s
1.5 ≤ VDD ≤ 5.5V
ppm/V
Input Voltage
VIL
VIH
VSS
0.8 x VDD
0.2 x VDD
VDD
V
V
Output
Duty Cycle
Output Voltage
40
VDD-0.4
50
VDD-0.1
0.14
60
0.4
100
%
V
V
VOH
VOL
tRF
IOH = -1.0 mA, VDD= 5.0V
IOL = 1.0 mA, VDD= 5.0V
CL = 15pF
Output Rise and Fall Time
10% - 90%
70
ns
Note1: The current consumption when the output clock is enabled (OE pin at VDD) is a function of the load capacitance on the
OUT pin, the output frequency fOUT = 32768Hz and the supply voltage VDD
The additional consumption for a given load can be calculated from: ΔIDD = CLOAD x VDD x fO
.
2
www.emmicroelectronic.com
Copyright © 2006, EM Microelectronic-Marin SA
03/06 – rev.A
R
EM7604
Timing Waveforms
32768Hz
OE
OUT
CKH
t
CKL
t
32768Hz
OE
OUT
CKH
t
CKL
t
VIH
VIL
OE
OUT
CKL
t
CKH
t
Frequency Temperature Characteristics with Standard 32.768 kHz Crystal
3
www.emmicroelectronic.com
Copyright © 2006, EM Microelectronic-Marin SA
03/06 – rev.A
R
EM7604
Package Information:
Ordering Information
Part Number
Package Type Top Marking
Delivery Form
EM7604V1SP6B+
SOT23
OVXY
Tape & Reel
Contact EM Microelectronic for availability in chip form or in other packages.
XY characters of the Top Marking are used for the lot traceability.
EM Microelectronic-Marin SA (EM) makes no warranty for the use of its products, other than those expressly contained in the
Company's standard warranty which is detailed in EM's General Terms of Sale located on the Company's web site. EM assumes
no responsibility for any errors which may appear in this document, reserves the right to change devices or specifications
detailed herein at any time without notice, and does not make any commitment to update the information contained herein. No
licenses to patents or other intellectual property of EM are granted in connection with the sale of EM products, expressly or by
implications. EM's products are not authorized for use as components in life support devices or systems.
4
www.emmicroelectronic.com
Copyright © 2006, EM Microelectronic-Marin SA
03/06 – rev.A
相关型号：
©2020 ICPDF网 联系我们和版权申明