ABX0027B
Ultra Low Current XO 10 MHz to 52 MHz
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 06/23/06 Page 1
FEATURES
• Low phase noise (-145 dBc @ 10kHz offset).
• CMOS output with OE tri-state control.
• Ultra Low current consumption ( <2mA, at
27MHz, 3.3V)
• 10 to 52MHz fundamental or 3rd OT crystal input.
• 12mA drive capability at TTL output.
• Low jitter (RMS): 2.5ps period jitter.
• 1.8V, 2.5V and 3.3V DC operation.
• Available in 6 pin SOT-23
DESCRIPTION
The ABX0027B form a low cost family of XO IC’s,
designed to consume the lowest current on the mar-
ket for the 10MHz to 52MHz range. It accepts fun-
damental resonant mode crystal input from 10 to
52MHz. Providing less than -145 dBc at 10kHz offset
at 30MHz and with a very low jitter (2.5 ps RMS pe-
riod jitter) makes this chip ideal for applications re-
quiring low current frequency sources.
BLOCK DIAGRAM
PIN ASSIGNMENT (PACKAGE)
SOT-23
1
2
34
5
6
GND
CLK
XOUT
XIN/FIN
OE^
VDD
XTAL
OSC
XIN/FIN
XOUT
CLK
OE
OSCSEL
ABX0027B
Ultra Low Current XO 10 MHz to 52 MHz
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 06/23/06 Page 2
PACKAGE PIN DESCRIPTION
Pin No.
Name SOT-6 Type Description
OE 1 I Output Enable input. See Table on page 1.
GND 2 P Ground connection.
XIN/FIN 3 I Crystal input or reference clock input pin.
XOUT 4 O Crystal output.
VDD 5 P Power supply connection.
CLK 6 O Output clock.
OE has internal pull-up resistor, so the default value is ‘1’ when not connected.
ELECTRICAL SPECIFICATIONS
1. Absolute Maximum Ratings
PARAMETERS SYMBOL MIN. MAX. UNITS
Supply Voltage VDD 4.6 V
Input Voltage, dc VI -0.5 VDD+0.5 V
Output Voltage, dc VO -0.5 VDD+0.5 V
Storage Temperature TS -65 150
°C
Ambient Operating Temperature* TA -40 85
°C
Junction Temperature TJ 125
°C
Lead Temperature (soldering, 10s) 260 °C
ESD Protection, Human Body Model 2 kV
Exposure of the device under conditions beyond the limits specified by Maximum Ratings for extended periods may cause permanent damage to the
device and affect product reliability. These conditions represent a stress rating only, and functional operations of the device at these or any other
conditions above the operational limits noted in this specification is not implied.
* Note: Operating Temperature is guaranteed by design for all parts (COMMERCIAL and INDUSTRIAL), but tested for COMMERCIAL grade only.
ABX0027B
Ultra Low Current XO 10 MHz to 52 MHz
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 06/23/06 Page 3
2. AC Electrical Specifications
PARAMETERS CONDITIONS MIN. TYP. MAX. UNITS
Input Crystal Frequency 10 52 MHz
At power-up
(Vdd reaches 1.62V) 10 ms
Disable to enable, osc. Off 10 ms
Settling time
Disable to enable, osc. On 500 µs
0.8V ~ 2.0V with 10 pF load 1.15
Output Clock Rise/Fall Time 0.3V ~ 3.0V with 15 pF load 2.4 ns
VDD sensitivity Frequency vs. VDD +/- 10% 0.8 0.8 ppm
Output Clock Duty Cycle Measured @ 50% VDD 45 50 55 %
3. Jitter and Phase Noise Specifications
PARAMETERS CONDITIONS MIN. TYP. MAX. UNITS
RMS Period Jitter
(1 sigma – 10,000 samples)
With capacitive decoupling
between VDD and GND. 2.1 2.5 ps
Phase Noise relative to carrier 27MHz @100Hz offset -108 dBc/Hz
Phase Noise relative to carrier 27MHz @1kHz offset -135 dBc/Hz
Phase Noise relative to carrier 27MHz @10kHz offset -147 dBc/Hz
Phase Noise relative to carrier 27MHz @100kHz offset -148 dBc/Hz
Phase Noise relative to carrier 27MHz @1MHz offset -148 dBc/Hz
4. DC Specification
PARAMETERS SYMBOL CONDITIONS MIN. TYP. MAX. UNITS
At 10MHz, Cload=15pF 1.0 1.1
At 13.5MHz, Cload=15pF 1.2 1.3
At 17.7MHz, Cload=15pF 1.5 1.6
At 27MHz, Cload=15pF 2.0 2.1
Supply Current, Dynamic,
with Loaded Outputs
(at VDD = 3.3V)
IDD
At 48MHz, Cload=15pF 3.5 3.6
mA
Operating Voltage VDD 1.62 3.63 V
Output High Voltage VOH IOH = -12mA (3.3V) 2.4 V
Output Low Voltage VOL IOL = 12mA (3.3V) 0.4 V
Output High Voltage at
CMOS level VOHC IOH = -4mA VDD – 0.4 V
Output drive current At TTL level (3.3V) 12 17 mA
Short Circuit Current (3.3V)
±50 mA
ABX0027B
Ultra Low Current XO 10 MHz to 52 MHz
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 06/23/06 Page 4
5. Crystal Specifications
PARAMETERS SYMBOL MIN. TYP. MAX. UNITS
Crystal Resonator Frequency FXIN 10 52 MHz
Crystal Loading Rating CL (xtal) 8.5 pF
Maximum Sustainable Drive Level 200 µW
Operating Drive Level 50 µW
C0 (for frequencies below 30MHz) 5 pF
C0 (for frequencies above 30MHz) 4 pF
ESR RS 30 Ω
Note: A detailed crystal specification document is also available for this part
PACKAGE INFORMATION
SOT-23 (6L)
Dimension in MM
Symbol Min. Max.
A 1.05 1.35
A1 0.05 0.15
A2 1.00 1.20
B 0.30 0.50
C 0.08 0.20
D 2.80 3.00
E 1.50 1.70
H 2.60 3.00
L 0.35 0.55
e 0.95 BSC
C
L
A2
EH
D
A1
eb
A
ABX0027B
Ultra Low Current XO 10 MHz to 52 MHz
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 06/23/06 Page 5
ORDERING INFORMATION
Abracon Corporation, reserves the right to make changes in its products or specifications, or both at any time without notice. The information fur-
nished by Abracon is believed to be accurate and reliable. However, Abracon makes no guarantee or warranty concerning the accuracy of said infor-
mation and shall not be responsible for any loss or damage of whatever nature resulting from the use of, or reliance upon this product.
LIFE SUPPORT POLICY: Abracon’s products are not authorized for use as critical components in life support devices or systems without the express
written approval of the President of Abracon Corporation.
For part ordering, please contact our Sales Department:
30332 Esperanza., Rancho Santa Margarita, Ca 92688
Ph: 949-546-8000 Fax: 949-546-8001
PART NUMBER
The order number for this device is a combination of the following:
Device number, Package type and Operating temperature range
ABX0027B X X - T
Note: Abracon Supports GREEN Packaging Only
Part / Order Number Marking Package Option
ABX0027BTCL-T ABX0027BTC 6-Pin SOT (Tape and Reel)
PART NUMBER
TEMPERATURE
C=COMMERCIAL
PACKAGE TYPE
T=SOT-23
NONE= TUBE
T=TAPE and REEL
