Ultra-miniature, Low Power, 32.768kHz MEMS Oscillator
ASTMK
FEATURES:
Moisture Sensitivity Level (MSL) – 1
ESD Sensitive
Pb
RoHS/RoHS II compliant
SMD: 2.0 x 1.2 x 0.60mm
CSP: 1.54 x 0.84 x 0.60mm
• Factory programmable output frequency: 1Hz to 32.768kHz
• Available in two types of ultra-miniature packages:
2.0 x 1.2 x 0.6mm (SMD); 1.54 x 0.84 x 0.6mm (CSP)
• Supply Voltage: 1.2V to 3.63V (-10 ~ +70°C); 1.5V to 3.63V (-40 ~ +85°C)
• Ultra-Low Current Consumption: 1.4µA max. (core current, no load)
• Frequency Stabilities include:
±75ppm over -10 to +70°C, ±100ppm over -40 to +85°C
• Internal power supply filtering eliminates external bypass capacitor for Vdd port.
• Proprietary NanoDrive
TM
Technology by SiTime enables programmable output swing
for lower power
• Timekeeping
• Battery Management
• Mobile devices
• RTC reference clock
• Wireless accessories
• Fitness/Medical monitoring sensors
• Sport video cams
APPLICATIONS:
STANDARD SPECIFICATIONS:
Parameters
Output Frequency Range (F
out
)
Initial Frequency Tolerance (F
tol
)
(1)(5)
Frequency Stability over Temperature
(F
stab
)
(2)
Aging (@+25°C)
Supply Voltage (V
dd
)
Min
1
-20
-75
-100
-250
-1
1.2
1.5
Typ
Max
32768
+20
+75
+100
+250
+1
3.63
3.63
1.3
1.4
Output Stage Operating Current
( I
dd out
)
(3)
Power Supply Ramp (t
Vdd_Ramp
)
Start-up Time (T
start
)
(4)
Unit
Hz
ppm
ppm
ppm
V
Notes
Factory programmed between 1Hz
and 32.768kHz, in the powers of 2
T
A
= +25°C, post reflow,
V
dd
:1.5-3.63V
T
A
= -10°C to +70°C, V
dd
:1.5-3.63V
T
A
= -40°C to +85°C, V
dd
:1.5-3.63V
T
A
= -10°C to +70°C, V
dd
:1.2-1.5V
First year
T
A
= -10°C to +70°C
T
A
= -40°C to +85°C
T
A
= +25°C, V
dd
: 1.8V. No load.
T
A
= -10°C to +70°C,
V
dd
max: 3.63V. No load
T
A
= -40°C to +85°C,
V
dd
max: 3.63V. No load.
T
A
= -40°C to +85°C,
V
dd
max: 1.5-3.63V. No load.
T
A
= -40°C to +85°C, 0 to 90%*V
dd
T
A
= +25°C±10°C, valid output
T
A
= -40°C to +85°C, valid output
Option “M”
Option “L”
Cycles=10000, T
A
= +25°C,
V
dd
:1.5-3.63V
10-90%(V
dd
), 15pF load, Vdd:1.5-
3.63V
V
dd
:1.5-3.63V. I
OH
= -10µA, 15pF
V
dd
:1.5-3.63V. I
OL
= 10µA, 15pF
30-70%(V
OL
/ V
OH
), 10pF load
ASTMK does not internally AC-
couple. This output description is
intended for a receiver that is AC-
coupled. See Part Identification
section for available AC-coupled
signal swing options.
V
dd
:1.5-3.63V. 10pF load,
I
OH
/ I
OL
=±0.2µA
0.90
Core Operating Current ( I
dd
)
(3)
µA
0.065
0.125
100
300+1
period
500+1
period
+70
+85
µA/V
pp
ms
ms
°C
ns
RMS
Operating Temperature Range (T
use
)
Period Jitter
Output Rise/Fall Time (t
r
/t
f
)
Output Clock Duty Cycle
Output Voltage
-10
-40
35
100
48
90%*V
dd
LVCMOS Output Option
( T
A
= -40°C to +85°C. Typical values are at T
A
= +25°C)
200
52
ns
%
V
ns
%
V
OH
V
OL
10%*V
dd
TM (6)
NanoDrive
Programmable, Reduced Swing Output Option
Output Rise/Fall Time (t
r
/t
f
)
200
Output Clock Duty Cycle
48
52
AC-coupled Programmable Output
Swing (V
SW
)
0.20 to
0.80
V
ABRACON IS
ISO9001:2008
CE RTIFIED
LLC
5101 Hidden Creek Lane Spicewood TX 78669
Phone: 512-371-6159 | Fax: 512-351-8858
For terms and conditions of sales please visit:
www.abracon.com
Revised: 06.17.2017
Ultra-miniature, Low Power, 32.768kHz MEMS Oscillator
ASTMK
(Continued)
Parameters
DC-biased Programmable Output
Voltage High Range (V
OH
)
DC-biased Programmable Output
Voltage Low Range (V
OL
)
Programmable Output Voltage Swing
Tolerance
Note:
1.
2.
3.
4.
5.
6.
Pb
RoHS/RoHS II compliant
SMD: 2.0 x 1.2 x 0.60mm
CSP: 1.54 x 0.84 x 0.60mm
Min
Typ
0.60 to
1.225
0.35 to
0.80
Max
Unit
V
V
Notes
V
dd
:1.5-3.63V. I
OH
=-0.2µA.10pF
load. See Part Identification section
for available V
OH
/ V
OL
levels.
V
dd
:1.5-3.63V. I
OL
=0.2µA.10pF
load. See Part Identification section
for available V
OH
/ V
OL
levels.
T
A
= -40°C to +85°C, V
dd
:1.5-3.63V
-0.055
+0.055
V
Measured peak-to-peak. Tested with Agilent 53132A frequency counter. Due to the low operating frequency, the gate time
must be
≥100ms
to ensure an accurate frequency measurement.
Stability is specified for two operating voltage ranges. Stability progressively degrades with supply voltage below 1.5V.
Measured peak-to-peak. Inclusive of initial tolerance at +25°C, and variations over operating temperature, rated power
supply voltage and load.
Core operating current does not include output driver operating current or load current. To derive total operating current (no
load), add core operating current + output driver operating current, where output driver operating current = C
driver
*V
out
*F
out
.
Measured from the time V
dd
reaches 1.5V.
Board-level underfill (BLUF) is not recommended for 1508 CSP package as it will cause a shift in the frequency tolerance.
NanoDrive
TM
is a SiTime trademark.
Absolute Maximum Ratings
Attempted operation outside the absolute maximum ratings may cause permanent damage to the part. Actual
performance of the IC is only guaranteed within the operational specifications, not at absolute maximum ratings.
Parameters
Continuous Power Supply Voltage Range (V
dd
)
Short Duration Max. Power Supply Voltage (V
dd
)
Continuous Maximum Operating Temperature Range
Short Duration Max. Operating Temperature Range
Human Body Model (HBM) ESD Protection
Charge-Device Model (CDM) ESD Protection
Machine Model (MM) ESD Protection
Latch-up Tolerance
Mechanical Shock Resistance
Mechanical Vibration Resistance
2012 SMD Junction Temperature
1508 CSP Junction Temperature
Storage Te mperature
Value
-0.5 to 3.63
4.0
≤30
minutes
105
Vdd:1.5-3.63V
125
Vdd:1.5-3.63V,
≤30
minutes
JESD22-A114
3000
JESD22-C101
750
JESD22-A115
300
JESD78 Compliant
Mil 883, Method 2002
10000
Mil 883, Method 2007
70
150
150
-65 to +150
Test Condition
Unit
V
V
°C
°C
V
V
V
g
g
°C
°C
°C
ABRACON IS
ISO9001:2008
CE RTIFIED
LLC
5101 Hidden Creek Lane Spicewood TX 78669
Phone: 512-371-6159 | Fax: 512-351-8858
For terms and conditions of sales please visit:
www.abracon.com
Revised: 06.17.2017
Ultra-miniature, Low Power, 32.768kHz MEMS Oscillator
ASTMK
Block Diagram
Pb
RoHS/RoHS II compliant
SMD: 2.0 x 1.2 x 0.60mm
CSP: 1.54 x 0.84 x 0.60mm
PART IDENTIFICATION:
ASTMK -
kHz -
-
- -
Packaging
Blank: Bulk
T: Tape & Reel
(1kpcs / reel)
T3: Tape & Reel
(3kpcs / reel)
T10: Tape & Reel
(10kpcs / reel)
Output
Frequency
(kHz)
32.768
16.384
8.192
4.096
2.048
1.024
0.512
0.256
0.128
0.064
0.032
0.016
0.008
0.004
0.002
0.001
Operating Temp.
M: -10°C ~ +70°C
L: -40°C ~ +85°C
Freq. Stability
P: ±75ppm
(-10°C ~ +70°C only)
Q: ±100 ppm
(-40°C ~ +85°C only)
Package Type
J: CSP
(1.5 x 0.8mm)
H: SMD
(2.0 x 1.2mm)
Output Level Option
DCC: Rail-to-Rail LVCMOS
AA3: AC-coupled signal, swing level: 0.3V min.
D14: DC-coupled signal, V
OL
: 0.400V max, V
OH
: 1.100V min
D26: DC-coupled signal, V
OL
: 0.525V max, V
OH
: 1.225V min
ABRACON IS
ISO9001:2008
CE RTIFIED
LLC
5101 Hidden Creek Lane Spicewood TX 78669
Phone: 512-371-6159 | Fax: 512-351-8858
For terms and conditions of sales please visit:
www.abracon.com
Revised: 06.17.2017
Ultra-miniature, Low Power, 32.768kHz MEMS Oscillator
ASTMK
Pb
RoHS/RoHS II compliant
SMD: 2.0 x 1.2 x 0.60mm
CSP: 1.54 x 0.84 x 0.60mm
Typical Performance Data (TA=25°C, Vdd=1.8V, unless otherwise stated)
Initial Tolerance Histogram
Frequency Stability vs. Operating Temperature Range
Core Current vs Operating Temperature Range
Output Stage Current vs Operating Temperature Range
32.768kHz Start-up Time
ABRACON IS
ISO9001:2008
CE RTIFIED
LLC
5101 Hidden Creek Lane Spicewood TX 78669
Phone: 512-371-6159 | Fax: 512-351-8858
For terms and conditions of sales please visit:
www.abracon.com
Revised: 06.17.2017
Ultra-miniature, Low Power, 32.768kHz MEMS Oscillator
ASTMK
Pb
RoHS/RoHS II compliant
SMD: 2.0 x 1.2 x 0.60mm
CSP: 1.54 x 0.84 x 0.60mm
Typical Performance Data (TA=25°C, Vdd=1.8V, unless otherwise stated)---(Continued)
Power Supply Noise Rejection (±150mV Noise)
NanoDrive
TM
Output Waveform (V
OH
= 1.1V, V
OL
= 0.4V)
LVCMOS Output Waveform (V
swing
= 1.8V)
REFLOW PROFILE:
Item
T
S
MAX to T
L
(Ramp-up Rate)
Preheat
Temperature Minimum (T
S
MIN)
Temperature Typical (T
S
TYP)
Temperature Maximum (T
S
MAX)
Time (t
S
)
Ramp-up Rate (T
L
to T
P
)
Time Maintained Above
Temperature (T
L
)
Time (t
L
)
Peak Temperature (T
P
)
Target Peak Temperature (T
P
Target)
Time within 5°C of actual peak (t
P
)
Max. Number of Reflow Cycles
Ramp-down Rate
Time 25°C to Peak Temperature (t)
150°C
175°C
200°C
60 – 180 seconds
3°C/second max
217°C
60 – 150 seconds
260°C max
255°C
20 – 40 seconds
3
6°C/second max
8 minutes max
Conditions
3°C/second max
ABRACON IS
ISO9001:2008
CE RTIFIED
LLC
5101 Hidden Creek Lane Spicewood TX 78669
Phone: 512-371-6159 | Fax: 512-351-8858
For terms and conditions of sales please visit:
www.abracon.com
Revised: 06.17.2017
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