MEMS Oscillator, Low Power, LVCMOS, 115.000 MHz to 137.000 MHz
IM802 Series
Pin Functionally
Pin Description
Pin
1
Symbol
OE
Functionality
Pin Assignments
High or Open = specified frequency output
Low = Output is high impedance, only output is disabled.
Tri-state
Standby
High or Open = specified frequency output.
Low = Output is low. Device goes to sleep mode. Supply current
reduces to standby current.
ꢀꢀꢀ
ST
OE
ST
N/C
1
2
4
3
Vdd
Any voltage between 0.0 V to Vdd or Open = specified frequency
No Connect output
Pin 1 has no functiion
N/C
Top View
2
GND
Out
Power
Output
Power
Electrical ground
Oscillator output
GND
OUT
3
4
Vdd
Power supply voltage
Notes:
ꢀꢀꢀ
1. In OE or ST mode, a pull-up resistor of 10.0 kΩ or less is recommended if Pin 1 is not externally
driven. If Pin 1 needs to be left floating, use the NC option.
2. A capacitor of value 0.1 µF or higher between Pin 4 (Vdd) and Pin 1 (GND) is required.
ꢀꢀꢀꢀ
Pin 1 Configuration Options (OE, or ꢁꢂ, or NC)
Pin 1 of the IM802 can be factory-programmed to support three modes: Output Enable (OE), Standby (ST) or No Connect (NC).
ꢀꢀꢀ
Output Enable (OE) Mode
In the OE mode, applying logic Low to the OE pin only disables the output driver and puts it in Hi-Z mode. The core of the device
continues to operate normally. Power consumption is reduced due to the inactivity of the output. When the OE pin is pulled High, the
output is typically enabled in <1µSec.
ꢀꢀꢀꢀ
Standby ꢁꢂꢃMode
In the ST mode, a device enters into the standby mode when Pin 1 pulled Low. All internal circuits of the device are turned off. The
ꢀꢀꢀ
current is reduced to a standby current, typically in the range of a few µA. When ST is pulled High, the device goes through the
“resume” process, which can take up to 5 mSec.
No Connect (NC) Mode
In the NC mode, the device always operates in its normal mode and outputs the specified frequency regardless of the logic level
on Pin 1.
Table1 below summarizes the key relevant parameters in the operation of the device in OE, ST, or NC mode.
Parameters
Active current 125.0 MHz (max +1.80 VDC)
OE
5.6 mA
ST
5.6 mA
NC
5.6 mA
OE disable current (max +1.80 VDC)
Standby current (typical +1.80 VDC)
OE enable time at 125.0 MHz (max)
4.0 mA
N/A
N/A
0.6 µA
N/A
N/A
N/A
N/A
124 nSec
Resume time from standby
(max, all frequency)
N/A
5 mSec
N/A
N/A
Output driver in OE disable/standby mode
High Z
Table 1 OE vs. ST vs. NC
Rev: 08/18/17_B
Page 5 of 9
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Specifications subject to change without notice