IM890-Series 16 A3

MEMS Ultra-Low Power Oscillator, 32.768 kHz Quartz XTAL Replacement
IM890 Series
Features:
Typical Applications:
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MEMS Technology
Small SMD package: 2.0 x 1.2 mm (2012)
Fixed 32.768 kHz output frequency
NanoDrveTM programmable output swing for lowest power
Pb-free, RoHS and REACH compliant
Mobile Phones
Tablets
Health and Wellness Monitors
Wireless Keypads
Ultra-Small Notebook PC
Electronic Specifications:
32.768 kHz
Fixed Output Frequency
Frequency Tolerance[1]
±20 ppm max
TA = +25°C, Post Reflow, Vdd: 1.5V – 3.63V
Frequency Stability[2]
±75 ppm max
±100 ppm max
±250 ppm max
TA = -10°C to +70°C Vdd: +1.50V to +3.63V
TA = -40°C to +85°C, Vdd: +1.50V to +3.63V
TA = -10°C to +70°C, Vdd: +1.20V to+1.50V
Aging +25°C ±2°C
±1 ppm max
1 Year
+1.20V min , +3.63 V max
+1.50V min, +3.63 V max
0.90 µA typ.
1.30 µA max
1.40 µA max
0.065 µA/Vpp typ.
0.125 µA/Vpp max
TA = -10°C to +70°C
TA = -40°C to +85°C
TA - +25°C, Vdd: +1.80V No load
TA = -10°C to +70°C, Vdd max, +3.63V No load
TA = -40°C to +85°C, Vdd max, +3.63V No load
100 mSec max
TA = -40°C to +85°C, 0 to 90% Vdd
180 mSec typ., 300 ms max
450 mSec max
TA = -40°C ≤ TA ≤ +50°C, valid output
TA = +50°C < TA ≤ +85°C, valid output
Operational Supply Voltage
Core Operating Current [3]
Output Stage Operating Current[3]
Power-Supply Ramp
Start-up Time at Power-up
[4]
st
TA = -40°C to +85°C, Vdd: 1.5V – 3.63V. No load
Notes:
1. Measured peak-to-peak. Tested with Agilent 53132A frequency counter. Due to the low operating frequency, the gate time must be ≥100 ms to
ensure an accurate frequency measurement.
2.Stability is specified for two operating voltage ranges. Stability progressively degrades with supply voltage below 1.5V. Measured peak-topeak. Inclusive of Initial Tolerance at 25°C, and variations over operating temperature, rated power supply voltage and load.
3.Core operating current does not include output driver operating current or load current. To derive total operating current (no load), add core
operating current + (0.065 µA/V) * (peak-to-peak output Voltage swing).
4.Measured from the time Vdd reaches 1.5V.
Output Rise / Fall Time
LVCMOS Output Option, TA = -40°C to +85°C,, typical values are at TA = +25°C
100 nSec typ. 200 nSec max
10-90% (Vdd), 15 pF load, Vdd = 1.5V to 3.63V
50 nSec max
10-90% (Vdd), 5 pF load, Vdd ≥ 1.62V
48/52% min/max
Symmetry
Logic “1”
Logic ‘0”
90% min
Vdd: 1.5V – 3.63V. IOH = -10 μA, 15 pF
10% max
Vdd: 1.5V – 3.63V. IOH = -10 μA, 15 pF
NanoDriveTM Programmable, Reduced Swing Output
200 nSec max
Output Rise / Fall Time
Symmetry
30-70% (VOL/VOH), 10 pF Load
48/52% min/max
AC-coupled Programmable Output
Swing
DC-Biased Programmable Output
Voltage High Range
DC-Biased Programmable Output
Voltage High Range
Programmable Output Voltage
Swing Tolerance
Period Jitter
0.20 V to 0.80 V typ.
0.60 V to 1.225 V typ.
Vdd: 1.5V – 3.63V, 10 pF Load, IOH / IOL = ±0.2 μA.
IM890 does not internally AC-couple. This output description is
intended for a receiver that is AC-coupled. See Table 2 for
acceptable NanoDrive swing options.
Vdd: 1.5V – 3.63V. IOH = -0.2 μA, 10 pF Load.
See Table 1 for acceptable VOH/VOL setting levels
0.35 V to 0.80 V typ.
Vdd: 1.5V – 3.63V. IOL = 0.2 μA, 10 pF Load.
See Table 1 for acceptable VOH/VOL setting levels.
±0.055 V max
TA = -40°C to +85°C, Vdd = 1.5V to 3.63V.
35 nSecRMS typ.
Cycles = 10,000, TA = 25°C, Vdd = 1.5V – 3.63V
ILSI America Phone 775-851-8880 ● Fax 775-851-8882 ●email: [email protected] ●
www.ilsiamerica.com
Specifications subject to change without notice
Rev 02/15/16_A
Page 1 of 10
MEMS Ultra-Low Power Oscillator, 32.768 kHz Quartz XTAL Replacement
IM890 Series
Ordering Information:
Part number Guide
Temp Range/
Freq Stability In ppm
Package
C
I
IM890
±75 (-10°C to +70°C)
±100 (-40°C to +85°C)
DC- coupled Output Voh
Table 4
Coupled
A = AC Coupled
D = DC Coupled
6 = 600 mV
7 = 700 mV
8 = 800 mV
9 = 900 mV
0 = 1.00 V
1 = 1.10 V
2 = 1.225 V
A = AC- coupled
C = rail-to rail LVCMOS
DC- coupled Output Vol
Or AC Swing
Table 3
1 = 200 mV (AC-coupled only)
2 = 250 mV (AC-coupled only)
3 = 350 mV
4 = 400 mV
5 = 500 mV
6 = 600 mV
7 = 700 mV
8 = 800 mV
C = rail-to rail LVCMOS
Note:
1) Industrial temp & corresponding 100 ppm frequency stability. Note, 100 ppm is only available for the industrial temp range, and 75
ppm is only available for the commercial temp range.
Example1:
Park Number: IM890-CDCC-32.768
Package
IM890
Temp Range/
C
Freq Stabitlity in ppm
Coupled
D
DC-coupled Output (Voh)
C
DC-coupled Output (Voh) or
C
AC Swing
32.768k
Frequency Output
ILSI Part Number
Temperature Range = -10°C to +70°C
Frequency Stability = ±75 ppm
DC Coupled
rail-to rail LVCMOS
rail-to rail LVCMOS
Example2:
Park Number: IM890-IDCC-32.768
Package
IM890
Temp Range/
I
Freq Stabitlity in ppm
Coupled
D
DC-coupled Output (Voh)
C
DC-coupled Output (Voh) or
C
AC Swing
32.768k
Frequency Output
ILSI Part Number
Temperature Range = -40°C to +85°C
Freguency Stability = ±100 ppm
DC Coupled
rail-to rail LVCMOS
rail-to rail LVCMOS
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Notes:
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For XTAL replacement applications that will keep the chipset oscillator enabled, configure the NanoDrive™ output for a swing similar to the XTAL,
approximately 250mV
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Please consult with sales department for any other parameters or options.
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Oscillator specification subject to change without notice.
ILSI America Phone 775-851-8880 ● Fax 775-851-8882 ●email: [email protected] ●
www.ilsiamerica.com
Specifications subject to change without notice
Rev 02/15/16_A
Page 2 of 10
MEMS Ultra-Low Power Oscillator, 32.768 kHz Quartz XTAL Replacement
IM890 Series
Absolute Maximum Limits
Parameter
Test Condition
Value
-0.5V to +3.63 V
Continuous Power Supply Voltage Range (Vdd)
≤30 minutes, over -40°C to +85°C
Short Duration Maximum Power Supply Voltage (Vdd)
Short Duration Maximum Operating Temperature Range
Human Body Model ESD Protection
+4.0V
Vdd = 1.5V - 3.63V
Continuous Maximum Operating Temperature Range
105°C
Vdd = 1.5V - 3.63V, ≤30 mins
125°C
HBM, JESD22-A114
3000 V
JESD220C101
Charge-Device Model (CDM) ESD Protection
750 V
TA = 25°C
Machine Model (MM) ESD Protection
300V
JESD78 Compliant
Latch-up Tolerance
Mechanical Shock Resistance
Mil 883, Method 2002
Mechanical Vibration Resistance
Mil 883, Method 2007
10,000 g
70 g
150°C
2012 SMD Junction Temperature
-65°C to +150°C
Storage Temperature
Pin Configuration
Pin
Symbol
I/O
1
N/C
No Connect
2
GND
Power Supply
Ground
3
CLK Out
Output
4
Vdd
Power Supply
Functionality
SMD Package
No Connect. Will not respond to any input signal. When
interfacing to an MCU’s XTAL input pins, this pin is typically
connected to the receiving IC’s X Out pin. In this case, the IM890
will not be affected by the signal on this pin. If not interfacing to
an XTAL oscillator, leave pin 1 floating (no connect).
Connect to ground. All GND pins must be connected to power
supply ground.
Oscillator clock output. When interfacing to an MCU’s XTAL, the
CLK Out is typically connected to the receiving IC’s X IN pin. The
IM890 oscillator output includes an internal driver. As a result,
the output swing and operation is not dependent on capacitive
loading. This makes the output much more flexible, layout
independent, and robust under changing environmental and
manufacturing conditions.
Connect to power supply 1.5V ≤ Vdd ≤ 3.63V for operation over
-40°C to +85°C temperature range. Under normal operating
conditions, Vdd does not require external bypass/decoupling
capacitor(s). Internal power supply filtering will reject more
than ±150 mVpp with frequency components through 10 MHz.
System Block Diagram
Figure 1.
ILSI America Phone 775-851-8880 ● Fax 775-851-8882 ●email: [email protected] ●
www.ilsiamerica.com
Specifications subject to change without notice
Rev 02/15/16_A
Page 3 of 10
MEMS Ultra-Low Power Oscillator, 32.768 kHz Quartz XTAL Replacement
IM890 Series
Power Supply Noise Immunity
Description
The 1.2V to 3.63V operating supply voltage range makes it an
ideal solution for mobile applications that incorporate a
low-voltage, battery-back-up source such as a coin-cell or
super-cap.
XTAL Footprint Compatibility (SMD Package)
The IM890 is a replacement to the 32 kHz XTAL in the 2.0 x
1.2 mm (2012) package. Unlike XTAL resonators, The ILSI
silicon MEMS oscillators require a power supply (Vdd) and
ground (GND) pin. Vdd and GND pins are conveniently placed
between the two large XTAL pins. When using the ILSI
Solder Pad Layout (SPL), the IM890 footprint is compatible
with existing 32 kHz XTALs in the 2012 SMD package. Figure
2 shows the comparison between the quartz XTAL footprint
and the ILSI footprint.
Figure 2 IM890 Footprint Compatibility with
Quartz Crystal Footprint
Frequency Stability
The IM890 is factory calibrated (trimmed) to guarantee
frequency stability to be less than 20 ppm at room
temperature and less than 100 ppm over the full -40°C to
+85°C temperature range. Unlike quartz crystals that have
a classic tuning fork parabola temperature curve with a
25°C turnover point, the IM890 temperature coefficient is
extremely flat across temperature. The device maintains
less than 100 ppm frequency stability over the full operating
temperature range when the operating voltage is
between 1.5 and 3.63V.
Functionality is guaranteed over the 1.2V - 3.63V operating
supply voltage range. However, frequency stability
degrades below 1.5V and steadily degrades as it
approaches the 1.2V minimum supply due to the internal
regulator limitations. Between 1.2V and 1.5V, the frequency
stability is 250 ppm max over temperature.
When measuring the IM890 output frequency with a
frequency counter, it is important to make sure the
counter's gate time is >100ms. The slow frequency of a 32
kHz clock will give false readings with faster gate times.
The IM890 is an ultra-small 32 kHz oscillator. In addition to
eliminating external output load capacitors common with
standard XTALs, this device includes special power supply
filtering and thus, eliminates the need for an external
Vdd bypass-decoupling capacitor. This feature further
simplifies the design and keeps the footprint as small as
possible. Internal power supply filtering is designed to reject
AC-noise greater than ±150 mVpp magnitude and
beyond 10 MHz frequency component.
Output Voltage
The IM890 has two output voltage options One option is a
standard LVCMOS output swing. The second option is the
NanoDrive reduced swing output. Output swing is customer
specific and programmed between 200 mV and 800 mV. For
DC-coupled applications, output VOH and VOL are individually
factory programmed to the customers’ requirement. VOH
programming range is between 600 mV and 1.225V in 100 mV
increments. Similarly, VOL programming range is between 350
mV and 800 mV. For example; a PMIC or MCU is internally
1.8V logic compatible, and requires a 1.2V VIH and a 0.6V VIL.
Simply select IM890 NanoDrive factory programming code to
be “D14” and the correct output thresholds will match the
downstream PMIC or MCU input requirements. Interface logic
will vary by manufacturer and we recommend that you review
the input voltage requirements for the input interface.
For DC-biased NanoDrive output configuration, the minimum
VOL is limited to 350mV and the maximum allowable swing
(VOH - VOL) is 750mV. For example, 1.1V VOH and 400mV
VOL is acceptable, but 1.2V VOH and 400 mV VOL is not
acceptable.
When the output is interfacing to an XTAL input that is internally AC-coupled, the IM890 output can be factory
programmed to match the input swing requirements. For
example, if a PMIC or MCU input is internally AC-coupled and
requires an 800mV swing, then simply choose the IM890
NanoDrive programming code “AA8” in the part number. It is
important to note that the IM890 does not include internal ACcoupling capacitors. Please see the Part Number Ordering
section of the datasheet for more information about the part
number ordering scheme.
Power-up
The IM890 starts-up to a valid output frequency within
300 ms (150ms typ). To ensure the device starts-up within
the specified limit, make sure the power-supply ramps-up in
approximately 10 - 20 ms (to within 90% of Vdd). Start-up time
is measured from the time Vdd reaches 1.5V. For applications
that operate between 1.2V and 1.5V, the start-up time will be
longer.
IM890 NanoDrive™
Figure 4 shows a typical IM890 output waveform (into a
10 pF load) when factory programmed for a 0.70V swing and
DC bias (VOH/VOL) for 1.8V logic:
ILSI America Phone 775-851-8880 ● Fax 775-851-8882 ●email: [email protected] ●
www.ilsiamerica.com
Specifications subject to change without notice
Rev 02/15/16_A
Page 4 of 10
MEMS Ultra-Low Power Oscillator, 32.768 kHz Quartz XTAL Replacement
IM890 Series
IM890 Full Swing LVCMOS Output
Example:
The IM890 can be factory programmed to generate fullswing LVCMOS levels. Figure 5 shows the typical LVCMOS
waveform (Vdd = 1.8V) at room temperature into a 15 pF
load.
• NanoDrive™ part number coding: D14.
• Example part number: IM890-ID14-32.768
• VOH = 1.1V, VOL = 0.4V (V_sw = 0.70V)
Figure 4. IM890-ID14-32.768
Output Waveform (10 pF Load)
Figure 5. LVCMOS Waveform
Vdd = +1.8 V into 15pF Load
Table 1 shows the supported NanoDrive™ VOH, VOL factory
programming options.
Table 1. Acceptable VOH/VOL NanoDrive™ Levels
VOL/VOH
1.225
1.100
1.000
0.800
D28
D18
D08
0.900
0.800
0.700
0.600
0.700
D27
D17
D07
D97
0.525
D26
D16
D06
D96
D86
0.500
D25
D15
D05
D95
D85
D75
0.400
D14
D04
D94
D84
D74
D64
0.350
D13
D03
D93
D83
D73
D63
Example:
• LVCMOS output part number coding is always DCC
• Example part number: IM890-4DCC-32.768
Calculating Load Current
No Load Supply Current
Table 2 shows the supported AC coupled Swing levels. The
“AC-coupled” terminology refers to the programming
description for applications where the downstream chipset
includes an internal AC-coupling capacitor, and therefore,
only the output swing is important and VOH/VOL are not
relevant.
When calculating no-load power for the IM890, the core and
output driver components need to be added. Since the output
voltage swing can be programmed for reduced swing between
250 mV and 800 mV, the output driver current is variable.
Therefore, no-load operating supply current is broken into two
sections; core and output driver. The equation is as follows:
Total Supply Current (no load) = Idd Core + (65nA/V)(Voutpp)
Example 1: Full-swing LVCMOS
• Vdd = 1.8V
• Idd Core = 900nA (typ)
• Voutpp = 1.8V (LVCMOS)
Supply Current = 900nA + (65nA/V)(1.8V) = 1017nA
Table 2. Acceptable AC-Coupled Swing Levels
Swing
0.800
0.700
0.600
0.500
0.400
0.300
0.250
0.200
Output
Code
AA8
AA7
AA6
AA5
AA4
AA3
AA2
AA1
Example 2: NanoDrive™ Reduced Swing
• Vdd = 1.8V
• Idd Core = 900nA (typ)
• Voutpp (Programmable) = VOH – VOL = 1.1V - 0.6V = 500 mV
Supply Current = 900nA + (65nA/V)(0.5V) = 932nA
Total Supply Current with Load
Example:
• NanoDrive part number coding: AA2. Example part
number: IM890-4AA2-32.768
• Output voltage swing: 0.250V
To calculate the total supply current, including the load,
follow the equation listed below. Note the 30% reduction in
power with NanoDrive™.
The values listed in Tables 1 and -2 are nominal values at
25°C and will exhibit a tolerance of ±55 mV across Vdd and
-40°C to 85°C operating temperature range.
ILSI America Phone 775-851-8880 ● Fax 775-851-8882 ●email: [email protected] ●
www.ilsiamerica.com
Specifications subject to change without notice
Rev 02/15/16_A
Page 5 of 10
MEMS Ultra-Low Power Oscillator, 32.768 kHz Quartz XTAL Replacement
IM890 Series
Total Current = Idd Core + Idd Output Driver (65nA/V*Voutpp)
+ Load Current (C*V*F
Example1:Full‐swingLVCMOS
• Vdd = 1.8V
• Idd Core = 900nA
• Load Capacitance = 10pF
• Idd Output Driver: (65nA/V)(1.8V) = 117nA
• Load Current: (10pF)(1.8V)(32.768kHz) = 590nA
• Total Current = 900nA+117nA+590nA = 1.6µA
Example2:NanoDrive™ReducedSwing
• Vdd = 1.8V
• Idd Core = 900nA
• Load Capacitance = 10pF
• Voutpp (Programmable): VOH – VOL = 1.1V - 0.6V = 500mV
• Idd Output Driver: (65nA/V)(0.5V) = 33nA
• Load Current: (10pF)(0.5V)(32.768kHz) = 164nA
• Total Current = 900nA + 33nA + 164nA = 1.1µA
ILSI America Phone 775-851-8880 ● Fax 775-851-8882 ●email: [email protected] ●
www.ilsiamerica.com
Specifications subject to change without notice
Rev 02/15/16_A
Page 6 of 10
MEMS Ultra-Low Power Oscillator, 32.768 kHz Quartz XTAL Replacement
IM890 Series
Environmental Specifications:
Environmental Compliance
Parameter
Condition/Test Method
MIL-STD-883F, Method 2002
MIL-STD-883F, Method 2007
JESD22, Method A104
MIL-STD-883F, Method 2003
MSL Level 1 at +260ºC
Mechanical Shock
Mechanical Vibration
Temperature Cycle
Solderability
Moisture Sensitivity Level
Pb Free Solder Reflow Profile
Units are backward compatible with +240ºC reflow processes
Ts max to TL (Ramp-up Rate)
Preheat
Temperature min (Ts min)
Temperature typ (Ts typ)
Temperature max (Ts max)
Time (Ts)
Ramp-up Tate (TL to Tp
Time Maintained Above
Temperature (TL)
Time (TL)
Peak Temperature (Tp)
Time within 5ºC to Peak
Temperature (Tp)
Ramp-down Rate
Tune 25ºC to Peak
Temperature
Moisture Sensitivity Level
(MSL)
ILSI America Phone 775-851-8880 ● Fax 775-851-8882 ●email: [email protected] ●
www.ilsiamerica.com
Specifications subject to change without notice
3ºC / second max
150ºC
175ºC
200ºC
60 to180 seconds
3ºC / second max
217ºC
60 to 150 seconds
260ºC max for seconds
20 to 40 seconds
6ºC / second max
8 minute max
Level 1
Rev 02/15/16_A
Page 7 of 10
MEMS Ultra-Low Power Oscillator, 32.768 kHz Quartz XTAL Replacement
IM890 Series
Typical Operating Curves (TA = 25°C, Vdd = 1.8V, unless otherwise stated)
Initial Tolerance Histogram
Frequency Stability Over Temperature
Core Current Over Temperature
Output Stage Current Over Temperature
Start-up Time
ILSI America Phone 775-851-8880 ● Fax 775-851-8882 ●email: [email protected] ●
www.ilsiamerica.com
Specifications subject to change without notice
Rev 02/15/16_A
Page 8 of 10
MEMS Ultra-Low Power Oscillator, 32.768 kHz Quartz XTAL Replacement
IM890 Series
Typical Operating Curves (cont.)
Power Supply Noise Rejection
(± 150 mV Noise)
TM
NanoDrive Output Waveform
Voh = 1.1V, Vol = 0.4V; IM890-ID14-32.768
LVCMOS Output Waveform
Vswing = 1.8V: IM890-IDCC-32.768
ILSI America Phone 775-851-8880 ● Fax 775-851-8882 ●email: [email protected] ●
www.ilsiamerica.com
Specifications subject to change without notice
Rev 02/15/16_A
Page 9 of 10
MEMS Ultra-Low Power Oscillator, 32.768 kHz Quartz XTAL Replacement
IM890 Series
Mechanical Details:
2.0 x 1.2 mm SMD Package
IM890 Series
XTAL Compatible
Suggested Land Pattern
Marking
Line 1 = XXXXX (Lot code)
Dot to denote Pin 1 location
Package Information
Leadframe: C194
Plating: NiPdAu
Notes:`
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All dimensions are in mm.
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Do not scale drawings.
ILSI America Phone 775-851-8880 ● Fax 775-851-8882 ●email: [email protected] ●
www.ilsiamerica.com
Specifications subject to change without notice
Rev 02/15/16_A
Page 10 of 10