ABB3068/69

ABB3068/69
High Speed Translator Buffers: Single ended to PECL or LVDS
FEATURES
3
NC
4
VDD
NC
15
14
13
ABB306x
12
NC
11
Q
10
Q_bar
9
5
6
7
8
NC
2
NC
REFIN
16
GND
1
Q
NC
NC
•
•
•
•
•
•
(TOP VIEW)
Q_bar
•
Differential PECL (ABB3068) or LVDS
(ABB3069) output.
Accepts any single-ended REFIN input (with
as low as 100mV swing).
Internal AC coupling of REFIN
Input range from 1.0MHz to 1.0 GHz.
No Vref required.
No external current source required.
2.5 to 3.3V operation.
Available in 3x3mm QFN.
OECTRL
•
PIN CONFIGURATION
OESEL
DESCRIPTION
OUTPUT ENABLE LOGICAL LEVELS
The ABB3068 and ABB3069 are low cost, high
performance, high speed, translator buffers that
reproduce any input frequency from DC to
1.0GHz. They provide a pair of differential outputs (PECL for ABB3068 or LVDS for ABB3069).
Thanks to an internal AC coupling of the reference input (REFIN), any input signal with at
least 100mV swing can be used as reference
signal, regardless of its DC value. These chips
are ideal for conversion from clipped sine wave,
TTL, CMOS, or differential signal to LVDS or
PECL.
ABB3068
OESEL
0 (Default)
1
OECTRL
OUTPUT STATE
0 (Default)
1
0
1 (Default)
Output enabled
Tri-state
Tri-state
Output enabled
OECTRL input: Logical states defined by PECL levels.
ABB3069
OESEL
0 (Default)
1
OECTRL
OUTPUT STATE
0
1 (Default)
0 (Default)
1
Tri-state
Output enabled
Output enabled
Tri-state
OECTRL input: Logical states defined by CMOS levels.
BLOCK DIAGRAM
REFIN
AC
Coupling
Input
Amplifier
Q_BAR
Q
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 03/21/05 Page 1
ABB3068/69
High Speed Translator Buffers: Single ended to PECL or LVDS
PIN DESCRIPTION
Name
Pin number
Type
NC
1, 3, 4, 6,
8, 12, 14
-
REFIN
2
I
OECTRL
GND
OESEL
5
7
9
I
P
I
Q_BAR
10
O
Q
VDD
11
13
O
P
Q
15
O
Q_BAR
16
O
Description
No connection.
Reference input signal. The frequency of this signal will be reproduced
at the output (after translation to PECL or LVDS level).
Output enable input (See OE Logic Table on page 1).
Ground connector.
Output enable logic selector (See OE Logic Table on page 1).
Complementary output. PECL_bar on ABB3068, LVDS_bar on
ABB3069.
True output. PECL on ABB3068, LVDS on ABB3069.
3.3V Power supply.
Additional true output. PECL on ABB3068, LVDS on ABB3069. This
output is the same as pin 11.
Additional complementary output. PECL_bar on ABB3068, LVDS_bar
on ABB3069. This output is the same as pin 10.
ELECTRICAL SPECIFICATIONS
1. Absolute Maximum Ratings
PARAMETERS
SYMBOL
MIN.
V DD
VI
VO
TS
TA
TJ
-0.5
-0.5
-65
-40
Supply Voltage
Input Voltage, dc
Output Voltage, dc
Storage Temperature
Ambient Operating Temperature*
Junction Temperature
Lead Temperature (soldering, 10s)
ESD Protection, Human Body Model
MAX.
UNITS
4.6
V DD +0.5
V DD +0.5
150
85
125
260
2
V
V
V
°C
°C
°C
°C
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.
2. General Electrical Specifications
PARAMETERS
SYMBOL
Supply Current
(both outputs loaded)
I DD
Operating Voltage
V DD
Output Clock Duty Cycle
Short Circuit Current
CONDITIONS
Fout = 156.25MHz, PECL
Fout = 156.25MHz, LVDS
@ Vdd – 1.3V (PECL)
@ 1.25V (LVDS)
MIN.
TYP.
MAX.
45
22
2.97
48
25
51
28
3.63
UNITS
mA
V
Same as input
Same as input
%
±50
mA
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 03/21/05 Page 2
ABB3068/69
High Speed Translator Buffers: Single ended to PECL or LVDS
3. AC Specifications
PARAMETERS
CONDITIONS
Input Frequency
Input signal swing
Output Frequency
MIN.
TYP.
0
100
0
REFIN input
MAX.
UNITS
1000
MHz
mV
MHz
1000
4. PECL Electrical Characteristics
PARAMETERS
Output High Voltage
Output Low Voltage
SYMBOL
CONDITIONS
MIN.
MAX.
UNITS
V OH
V OL
R L = 50 Ω to (V DD – 2V)
(see figure)
V DD – 1.025
V DD – 1.810
V DD – 0.880
V DD – 1.620
V
V
5. PECL Switching Characteristics
PARAMETERS
SYMBOL
Clock Rise Time
Clock Fall Time
CONDITIONS
tr
tf
@20/80% - PECL
@80/20% - PECL
PECL Levels Test Circuit
OUT
TYP.
MAX.
UNITS
0.2
0.2
0.5
0.5
ns
ns
PECL Output Skew
OUT
VDD
50Ω
MIN.
2.0V
50%
50Ω
OUT
tSKEW
OUT
PECL Transistion Time Waveform
DUTY CYCLE
45 - 55%
55 - 45%
OUT
80%
50%
20%
OUT
tR
tF
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 03/21/05 Page 3
ABB3068/69
High Speed Translator Buffers: Single ended to PECL or LVDS
6. LVDS Electrical Characteristics
PARAMETERS
SYMBOL
Output Differential Voltage
V DD Magnitude Change
Output High Voltage
Output Low Voltage
Offset Voltage
Offset Magnitude Change
V OD
∆V OD
V OH
V OL
V OS
∆V OS
Power-off Leakage
I OXD
Output Short Circuit Current
I OSD
CONDITIONS
R L = 100 Ω
(see figure)
MIN.
TYP.
MAX.
UNITS
247
-50
355
454
50
1.6
0.9
1.125
0
V out = V DD or GND
V DD = 0V
1.4
1.1
1.2
3
1.375
25
mV
mV
V
V
V
mV
±1
±10
uA
-5.7
-8
mA
7. LVDS Switching Characteristics
PARAMETERS
SYMBOL
Differential Clock Rise Time
CONDITIONS
MIN.
TYP.
MAX.
UNITS
R L = 100 Ω
0.2
0.5
1.0
ns
0.2
0.5
1.0
ns
tr
Differential Clock Fall Time
C L = 10 pF
(see figure)
tf
LVDS Levels Test Circuit
LVDS Switching Test Circuit
OUT
OUT
CL = 10pF
50Ω
VOD
VDIFF
VOS
RL = 100Ω
50Ω
CL = 10pF
OUT
OUT
LVDS Transistion Time Waveform
OUT
0V (Differential)
OUT
80%
VDIFF
80%
0V
20%
20%
tR
tF
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 03/21/05 Page 4
ABB3068/69
High Speed Translator Buffers: Single ended to PECL or LVDS
PACKAGE INFORMATION
Important note: pin 1 indicator (bottom side) is metallized and connected to GND through the leadframe. Traces in contact with the pin
1 indicator may result is short circuit to GND.
ORDERING INFORMATION
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
ABB306x
PART NUMBER
QC
TEMPERATURE
C=COMMERCIAL
I=INDUSTRIAL
PACKAGE TYPE
Q=QFN
Order Number
Marking
Package Option
ABB3068QC-T
ABB3068QC
ABB3069QC-T
A3068
A3068
A3069
QFN - Tape and Reel
QFN - Tube
QFN - Tape and Reel
Abracon Corporation, reserves the right to make changes in its products or specifications, or both at any time without notice. The information furnished by Abracon is believed to be accurate and reliable. However, Abracon makes no guarantee or warranty concerning the accuracy of said information 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.
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 03/21/05 Page 5