ABV2038/39
PECL and LVDS Low Phase Noise VCXO (for 65-130MHz Fund Xtal)
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 03/21/05 Page 1
FEATURES
• 65MHz to 130MHz Fundamental Mode Crystal.
• Output range: 65MHz – 130MHz (no PLL).
• Low Injection Power for crystal 50uW.
• PECL (ABV2038) or LVDS output (ABV2039).
• Integrated variable capacitors.
• Supports 2.5V or 3.3V-Power Supply.
• Available in 16-Pin (TSSOP or 3x3 QFN).
DESCRIPTION
The ABV2038/-39 is a family of VCXO IC’s
specifically designed to pull high frequency
fundamental crystals from 65MHz to 130MHz, with
selectable PECL or LVDS output s.. They achieve
very low current into the crystal resulting in better
overall stability. Their internal varicaps allow an on
chip frequency pulling, controlled by the VCON
input. Their very low jitter makes them ideal for the
most demanding timing requirements.
BLOCK DIAGRAM
PIN CONFIGURATION
OUTPUT ENABLE LOGICAL LEVELS
Part # OE State
0
(Default) Output enabled
ABV2038 1 Tri-state
0 Tri-state
ABV2039 1
(Default) Output enabled
OE input: Logical states defined by PECL levels fo r ABV2038
Logical states de fined by CMOS levels fo r ABV2039
ABV203x
1
2
3
4
5
6
7
8
VDD
9
1
0
1
1
1
2
1
3
1
4
1
5
1
6
XIN
XOUT
N/C
N/C
OE
VCON
GND
N/C
N/C
GND
CLKC
VDD
CLKT
N/C
N/C
XIN
XOUT
OE
Q
ABV203x
VCON Q
Oscillator
Amplifier
w/
integrated
varicaps
ABV203x
GND
VDD
CLKT
CLKC
VDD
N/C
N/C
VDD
XOUT
XIN
N/C
OE
GND
VCON
GND
GND
4
16
15
14
1312 11 10 9 8
7
6
5
123
ABV2038/39
PECL and LVDS Low Phase Noise VCXO (for 65-130MHz Fund Xtal)
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 03/21/05 Page 2
PIN DESCRIPTIONS
Name Number Type Description
XIN 2 I Crystal input. See Crystal Specifications o n page 2.
XOUT 3 I Crystal output. Se e Crystal Specifications on page 2.
OE 6 I Output enable. Se e Output Enable Logic table on page 1.
VCON 7 I Voltage control input.
GND 8, 14 P Ground.
CLKT 11 O True output PECL (ABV2038) or L VDS (ABV2039).
CLKC 13 O Complementary o utput PECL (ABV2038) or LVDS (ABV2 039).
N/C 4,5,9,10,15,16 - Not connected.
VDD 1, 12 P Power supply.
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 T emperature* 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 d evice under conditions beyond the limits specified by Maximum Ratings for extended periods may cause pe rmanent damage to the
device and affect product reliability. These conditions represent a stress rating on ly, and functional operations of the device at these or any other
conditions above the operational limits noted in this spec ification is not im plied.
* Note: Operating Temperature is guaranteed by design for all parts (COMMERCIAL and INDUSTRIAL), but tested for CO MMERCIAL grade only.
2. Crystal Specifications
PARAMETERS SYMBOL CONDITIONS MIN. TYP. MAX. UNITS
Oscillation Frequency OF Fund 65 130 MHz
Crystal Load CL 8.5 pF
Inter-electrode capacitance C0 2.6
C0/C1 ratio (gamma) γ 300 -
ABV2038/39
PECL and LVDS Low Phase Noise VCXO (for 65-130MHz Fund Xtal)
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 03/21/05 Page 3
3. Voltage Control Crystal Oscillator (3.3V)
PARAMETERS SYMBOL CONDITIONS MIN. TYP. MAX. UNITS
VCXO Stabilization Time * TVCXOSTB From power valid 10 ms
VCXO Tuning Range FXIN = 100 – 200MHz;
XTAL C0/C1 < 250
0V ≤ VCON ≤ 3.3V 200* ppm
CLK output pullab ility VCON=1.65V, ±1.65V ±100* ppm
On-chip Varicaps control range VCON = 0 to 3.3V 4 – 18* pF
Linearity 10* %
VCXO Tuning Characteristic 65 ppm/V
VCON input impedance 60
kΩ
VCON modulation BW 0V ≤ VCON ≤ 3.3V, -3dB 25 kHz
Note: Parame ters denoted with an asterisk (*) repres ent nominal characteriza tion data and are not production tes ted to any specific limits.
4. General Electrical Specifications
PARAMETERS SYMBOL CONDITIONS MIN. TYP. MAX. UNITS
Supply Current (Loade d
Outputs) IDD PECL/LVDS 100/80 mA
Operating Volt age VDD 2.97 3.63 V
Output Clock Duty Cycle @ 1.25V (LVDS)
@ VDD – 1.3V (PECL) 45
45 50
50 55
55 %
Short Circuit Current
±50 mA
5. Jitter Specifica tions
PARAMETERS CONDITIONS MIN. TYP. MAX. UNITS
Period jitter RMS 77.76MHz 2.5 ps
Period jitter peak-to-peak 77.76MHz 18.5 ps
Integrated jitte r RMS Integrated 12 kHz to 20 MHz at 77.76MHz 0.5 ps
6. Phase Noise Specifications
PARAMETERS FREQUENCY @10Hz @100Hz @1kHz @10kHz @100kHz UNITS
Phase Noise relative
to carrier 77.76MHz -75 -95 -125 -145 -155 dBc/Hz
Note: Phase Nois e measured at VCON = 0V
ABV2038/39
PECL and LVDS Low Phase Noise VCXO (for 65-130MHz Fund Xtal)
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 03/21/05 Page 4
7. LVDS Electrical Characteristics
PARAMETERS SYMBOL CONDITIONS MIN. TYP. MAX. UNITS
Output Differential Voltage VOD 247 355 454 mV
VDD Magnitude Change ∆VOD -50 50 mV
Output High Voltage VOH 1.4 1.6 V
Output Low Voltage VOL 0.9 1.1 V
Offset Voltage VOS 1.125 1.2 1.375 V
Offset Magnitu de Change ∆VOS
RL = 100 Ω
(see figure)
0 3 25 mV
Power-off Leakage IOXD Vout = VDD or GND
VDD = 0V ±1 ±10 uA
Output Short Circuit Current IOSD -5.7 -8 mA
8. LVDS Switching Characteristics
PARAMETERS SYMBOL CONDITIONS MIN. TYP. MAX. UNITS
Differential Clock Rise Time tr 0.2 0.7 1.0 ns
Differential Clock Fall Time tf
RL = 100 Ω
CL = 10 pF
(see figure) 0.2 0.7 1.0 ns
OUT
OUT
V
OD
V
OS
50
Ω
50
Ω
OUT
V
DIFF
R
L
= 100
Ω
C
L
= 10pF
C
L
= 10pF
LVDS Switching Test CircuitLVDS Levels Test Circuit
LVDS Transistion Time Waveform
OUT
OUT
OUT
0V (Differential)
0V
20%
80%
20%
80%
t
R
t
F
V
DIFF
ABV2038/39
PECL and LVDS Low Phase Noise VCXO (for 65-130MHz Fund Xtal)
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 03/21/05 Page 5
9. PECL Electrical Characteristics
PARAMETERS SYMBOL CONDITIONS MIN. MAX. UNITS
Output High Voltage VOH V
DD – 1.025 V
Output Low Voltage VOL RL = 50 Ω to (VDD – 2V)
(see figure) V
DD – 1.620 V
10. PECL Switching Cha racteristics
PARAMETERS SYMBOL CONDITIONS MIN. TYP. MAX. UNITS
Clock Rise Time tr @20/80% - PECL 0.6 1.5 ns
Clock Fall Time tf @80/20% - PECL 0.5 1.5 ns
OUT
OUT
50
Ω
50
Ω
PECL Levels Test Circuit
PECL Transistion Time Waveform
OUT
OUT
50%
20%
80%
t
R
t
F
VDD
DUTY CYCLE
45 - 55% 55 - 45%
50%
OUT
OUT
t
SKEW
PECL Output Skew
2.0V
ABV2038/39
PECL and LVDS Low Phase Noise VCXO (for 65-130MHz Fund Xtal)
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 03/21/05 Page 6
PACKAGE INFORMATION
CL
A
EH
D
A1
eB
16 PIN TSSO P ( mm )
Symbol Min. Max.
A - 1.20
A1 0.05 0.15
B 0.19 0.30
C 0.09 0.20
D 4.90 5.10
E 4.30 4.50
H 6.40 BSC
L 0.45 0.75
e 0.65 BSC
3x3mm QFN
ABV2038/39
PECL and LVDS Low Phase Noise VCXO (for 65-130MHz Fund Xtal)
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 03/21/05 Page 7
ORDERING INFORMATION
Abracon Corporation, reserves the right to make changes in its products or specifications, or both at any time without notice. The information
furnished by Abra con is believed to be accurate and reliable. However, Abracon makes no guaran tee or warranty concern ing the accuracy of s aid
information and shall n ot 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 n ot authorized for use as critic al components in life support devices or sy stems without the exp ress
written approval of the President of Abracon Corporation .
For part ordering, please contact our Sales Department:
30332 Esperanza., R ancho Santa Margarit a, Ca 92688
Ph: 949-546-8000 Fax: 949- 546-8001
PART NUMBER
The order number for this d evice is a combination of th e following:
Device number, Packag e type and Operating tempera ture range
ABV203x O C
Order Number Marking Package Option
ABV2038OC ABV2038OC TSSOP - Tube
ABV2038OC-T ABV2038OC TSSOP - Tape & Reel
ABV2038QC ABV2038QC QFN - Tube
ABV2038QC-T ABV2038QC QFN - Tape & Reel
ABV2039OC ABV2039OC TSSOP - Tube
ABV2039OC-T ABV2039OC TSSOP - Tape & Reel
ABV2039QC ABV2039QC QFN - Tube
ABV2039QC-T ABV2039QC QFN - Tape & Reel
PART NUMBER TEMPERATURE
C=COMMERCIAL
I=INDUSTRAL
PACKAGE TYPE
O=TSSOP Q=QFN
