Micrel, Inc.
3.3V 800MHz PRECISION PECL
AMPLIFIER WITH LOW-GAIN
FEEDBACK
Precision Edge
SY89207L
Precision Edge
廬
SY89207L
廬
s
3.0V to 3.8V power supply option
s
Guaranteed AC parameters over temperature:
鈥?f
MAX
= 800MHz
鈥?< 200ps differential propagation delay (D to Q
FB
)
鈥?< 730ps differential propagation delay (D to Q
HG
)
鈥?< 250ps t
r
/ t
f
s
Low-gain feedback path Q
FB
= +10V/V
s
V
BB
reference output voltage
s
Wide temperature range: 鈥?0
擄
C to +85
擄
C
s
Available in 10-pin (3mm
脳
3mm) MSOP
s
LVPECL/LVECL/CMOS compatible EN option
Precision Edge
廬
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 鈥?0擄C to +85擄C temperature
range and 3.3V nominal supply voltage range.
All support documentation can be found on Micrel鈥檚 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