Micrel, Inc.
3.3V 800MHz PRECISION PECL
AMPLIFIER WITH LOW-GAIN
FEEDBACK
Precision Edge
SY89207L
Precision Edge
®
SY89207L
®
s
3.0V to 3.8V power supply option
s
Guaranteed AC parameters over temperature:
• f
MAX
= 800MHz
• < 200ps differential propagation delay (D to Q
FB
)
• < 730ps differential propagation delay (D to Q
HG
)
• < 250ps t
r
/ t
f
s
Low-gain feedback path Q
FB
= +10V/V
s
V
BB
reference output voltage
s
Wide temperature range: –40
°
C to +85
°
C
s
Available in 10-pin (3mm
×
3mm) MSOP
s
LVPECL/LVECL/CMOS compatible EN option
Precision Edge
®
DESCRIPTION
The SY89207L is a differential receiver amplifier optimized
for crystal oscillator applications. The device includes an
additional low differential gain (+10V/V) output stage (Q
FB
)
ideal for feedback applications common in crystal oscillator
gain blocks. The SY89207L is fully differential, with a bandwidth
> 800MHz over temperature and voltage. For applications that
require output disable control, a LVPECL/LVECL/CMOS
compatible enable pin (EN) will force the differential output
into a fixed logic state. The SY89207L also includes a V
BB
reference voltage for single-ended or AC-coupled applications.
The SY89207L PECL logic is 100k ECL compatible.
Operation is guaranteed over the –40°C to +85°C temperature
range and 3.3V nominal supply voltage range.
All support documentation can be found on Micrel’s web
site at www.micrel.com.
APPLICATIONS
s
Oscillator timing modules
BLOCK DIAGRAM
Q
FB
/Q
FB
D
/D
V
BB
LEN
EN
Q
V
CC
Q
HG
/Q
HG
LATCH
D
V
EE
Precision Edge is a registered trademark of Micrel, Inc.
M9999-051805
hbwhelp@micrel.com or (408) 955-1690
Rev.: B
Amendment: /0
1
Issue Date: May 2005
Micrel, Inc.
Precision Edge
®
SY89207L
PACKAGE/ORDERING INFORMATION
Ordering Information
(1)
QFB 1
/QFB 2
D 3
/D 4
VBB 5
10 VCC
9 QHG
8 /QHG
7 VEE
6 EN
Part Number
SY89207LMI
SY89207LMITR
(2)
SY89207LMG
SY89207LMGTR
(2)
Package
Type
K10-1
K10-1
K10-1
K10-1
Operating
Range
Industrial
Industrial
Industrial
Industrial
Package
Marking
SY89207L
SY89207L
SY89207L with
Pb-Free bar-line indicator
SY89207L with
Pb-Free bar-line indicator
Lead
Finish
Sn-Pb
Sn-Pb
Pb-Free
NiPdAu
Pb-Free
NiPdAu
10-Pin MSOP (K10-1)
Notes:
1. Contact factory for die availability. Dice are guaranteed at T
A
= 25°C, DC electricals only.
2. Tape and Reel.
PIN DESCRIPTION
Pin Number
1, 2
3, 4
5
Pin Name
QFB, /QFB
D, /D
VBB
Pin Function
Differential clock outputs for feedback path: Nominal DC gain +10.
LVPECL, LVECL differential inputs: Internal 75kΩ pull-down resistor.
V
CC
–1.32V reference voltage for single-ended inputs: It provides the switching reference
for the input differential amplifier. When unused, it can be left open. For single-ended PECL
applications connect V
BB
to /D input. For differential AC-coupled inputs, terminate each
input with 50Ω to V
BB
as close to the input pins as possible. Always bypass the V
BB
pin
with a 0.01µF capacitor to V
CC
.
Enable: LVPECL/LVECL/CMOS compatible input control with internal 25kΩ pull-up
resistor. It enables/disables the high-gain output (Q
HG
). Default state is enabled, logic
HIGH, if left floating When EN pin is pulled to a logic LOW or GND, the Q
HG
output pair will
be latched, as described in the “Truth Table.” EN is synchronous so that the outputs will
only be enabled/disabled when they are in the LOW state. Input threshold is V
BB
.
Negative power supply: For LVECL operation, connect to negative supply. For LVPECL
operation, connect to GND.
Differential high-gain outputs: Nominal DC gain is greater than +200.
Positive power supply: For LVECL operation, connect to V
CC
= 0V. For LVPECL operation,
connect to 3.3V. Bypass with 0.1µF0.01µF low ESR capacitors.
6
EN
7
8, 9
10
VEE
QHG, /QHG
VCC
TRUTH TABLE
EN
1
0
QHG Out
Data
Logic Low
/QHG Out
/Data
Logic High
M9999-051805
hbwhelp@micrel.com or (408) 955-1690
2
Micrel, Inc.
Precision Edge
®
SY89207L
Absolute Maximum Ratings
(1)
Power Supply Voltage (V
CC
– V
EE
) ............................ +6.0V
PECL Input Voltage (V
IN
) .......................... 0V to V
CC
+0.5V
Voltage Applied to Output at High State (V
EE
= 0V)
............................................................ –0.5V to +5.5V
Output Current (I
OUT
)
Continuous ............................................................. 50mA
Surge .................................................................... 100mA
Lead Temperature (soldering, 10 sec.) ..................... 220°C
Storage Temperature (T
S
) ....................... –65°C to +150°C
Operating Ratings
(2)
Supply Voltage (V
IN
) ................................... +3.0V to +3.8V
Ambient Temperature (T
A
) ......................... –40°C to +85°C
Junction Temperature (T
J
) ........................................ 160°C
Package Thermal Resistance
MSOP
(θ
JA
)
Still Air ........................................................... 113°C/W
MSOP (Ψ
JB
) ........................................................ 74°C/W
DC ELECTRICAL CHARACTERISTICS
V
CC
= +3.0V to +3.8V; T
A
= –40°C to +85°C; unless noted.
Symbol
V
CC
I
CC
V
BB
I
IH
I
IL
C
IN
EN
Parameter
Power Supply Voltage
Power Supply Current
Reference Voltage
Input HIGH Current
Input LOW Current
Input Capacitance
Enable
LVECL/LVPECL/CMOS compatible
V
EE
D, /D
EN
D, /D
EN
V
IN
= V
IH
(max)
V
IN
= V
CC
V
IN
= V
IL
(min)
V
IN
= GND
0.5
–300
0.75
V
CC
(LVPECL)
(LVECL)
Condition
V
EE
= GND
V
CC
= GND
V
CC
= 3.8V
Min
3.0
–3.8
Typ
3.3
–3.3
Max
3.8
–3.0
46
V
CC
–1.26 V
CC
–1.32 V
CC
–1.38
150
100
Units
V
V
mA
V
µA
µA
µA
µA
pF
V
LVPECL/LVECL DC ELECTRICAL CHARACTERISTICS
V
CC
= +3.0V to +3.8V and V
EE
= 0V, V
CC
= 0V and V
EE
= –3.0V to –3.8V; T
A
= –40°C to +85°C; unless otherwise noted.
Symbol
V
OH
V
OL
V
IH
V
IL
V
IHCMR
Notes:
1. Permanent device damage may occur if the ratings in the “Absolute Maximum Ratings” section are exceeded. This is a stress rating only and
functional operation is not implied at conditions other than those detailed in the operational sections of this data sheet. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
2. The data sheet limits are not guaranteed if the device is operated beyond the operating ratings.
3. V
IHCMR
is referenced to the most positive side of the differential input signal.
Parameter
Output High Voltage
Output Low Voltage
Input HIGH Voltage
Input LOW Voltage
Input High Voltage
Common Mode Range
Condition
50Ω to V
CC
–2V
50Ω to V
CC
–2V
Min
2.215
1.470
2.135
1.490
Typ
2.305
1.595
—
—
—
Max
2.42
1.745
2.420
1.825
V
CC
–0.8
Units
V
V
V
V
V
Note 3
2.0
M9999-051805
hbwhelp@micrel.com or (408) 955-1690
3
Micrel, Inc.
Precision Edge
®
SY89207L
AC ELECTRICAL CHARACTERISTICS
V
CC
= +3.0V to +3.8V and V
EE
= GND or V
EE
= –3.0V to –3.8V and V
CC
= GND; T
A
= –40°C to +85°C; unless noted.
Symbol
f
MAX
t
pd
Parameter
Maximum Frequency
Propagation Delay
to Q
FB
, /Q
FB
to Q
HG
, /Q
HG
t
S
t
H
t
JITTER
t
SKEW
V
PP
t
r
t
f
Set-Up Time
Hold Time
Cycle-to-Cycle Jitter
Duty Cycle Skew
Minimum Input Swing
Output Rise/Fall Times
(20% to 80%)
(Diff.)
(Single)
(Diff.)
(Single)
Enable Pin
(4)
Enable Pin
(4)
RMS
Note 5
Note 6
At full output swing
150
250
650
650
0.2
5
20
Condition
Min
800
200
230
730
780
Typ
Max
Units
MHz
ps
ps
ps
ps
ps
ps
ps
ps
mV
ps
Notes:
4. See “Timing Waveform” section.
5. Duty cycle skew is the difference between rise and fall time propagation delay through the device.
6. The device has a DC gain of 10 for Q, /Q outputs, and DC gain of 200 or higher for Q
HG
, /Q
HG
. See “Timing Waveform” minimum input swing.
TIMING WAVEFORMS
D
150mV
/D
Figure 1. Minimum Input Swing
D
t
S
EN
t
H
V
CC
— V
BB
V
CC
— V
BB
Q
FB
Q
HG
Figure 2. Set-Up and Hold Timing
M9999-051805
hbwhelp@micrel.com or (408) 955-1690
4
Micrel, Inc.
Precision Edge
®
SY89207L
TERMINATION RECOMMENDATIONS
+3.3V
+3.3V
Z
O
= 50Ω
Z
O
= 50Ω
R1
130Ω
R1
130Ω
+3.3V
R2
82Ω
R2
82Ω
V
t
= V
CC
-2V
Figure 3. Parallel Termination–Thevenin Equivalent
+3.3V
Z = 50Ω
Z = 50Ω
50Ω
50Ω
R
b
+3.3V
source
46Ω to 49Ω
destination
C1
0.01µF
(optional)
Figure 4. Three-Resistor “Y–Termination”
RELATED PRODUCT AND SUPPORT DOCUMENTATION
Part Number
SY100EL16VO
SY89250V
Function
3.3V/5V 800MHz Precision PECL Amplifier
with Low-Gain Feedback
3.3V/5V Enhanced Differential Receiver
Data Sheet Link
www.micrel.com/product-info/products/sy100el16vo.shtml
www.micrel.com/product-info/products/sy89250v.shtml
M9999-051805
hbwhelp@micrel.com or (408) 955-1690
5
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