AZP81 Datasheet, PDF (1/16 Pages) Arizona Microtek, Inc – PECL/ECL Filter-Based Multiplier & Limiting Amp with Selectable Enable

AZP81
ARIZONA MICROTEK, INC.
PECL/ECL Filter-Based Multiplier & Limiting Amp with Selectable Enable
FEATURES
• High Bandwidth for 1+GHz
• 3.0V to 5.5V Power Supply
• Selectable Enable Polarity
• Designed for Filters to Select Odd or
Even Harmonics
• S-Parameter (.s1p and .s2p) Files
Available on Arizona Microtek Website
PACKAGE AVAILABILITY
PACKAGE
PART NO. MARKING NOTES
MLP 16 (3x3) Green /
RoHS Compliant /
Lead (Pb) Free
AZP81LG
AZMG
1,2
P81
<Date Code>
1 Add R1 at end of part number for 7 inch (1K parts), R2 for 13 inch
(2.5K parts) Tape & Reel.
2 Date code format: “Y” for year followed by “WW” for week.
DESCRIPTION
The AZP81 is a specialized multiplier chip designed to be used with an external filter. It supplies three different
gain paths. A low gain path is used with a resonator, usually a crystal (D/D¯ to Q¯ ). An intermediate gain path with
fast output edges supplies a filter (D/D¯ to FLTRDR/¯F¯L¯T¯R¯¯D¯R¯). A high gain limiting amp (AMPIN to Q_HG/Q¯ _HG)
with a selectable enable provides industry standard 100k PECL/ECL outputs.
When Q_HG/Q¯ _HG are disabled, the AZP81’s oscillator loop continues to operate. See truth table below for enable
function. It also provides a V_BB and 470Ω internal bias resistors from D/D¯ to V_BB and AMPIN to V_BB. The V_BB pin
can support 1.5mA sink/source current. Bypassing V_BB and D¯ to ground with 0.01 to 0.1 μF capacitors is
recommended.
Output Q¯ has an on-chip 4mA pull-down current source while output FLTRDR has an on-chip 8mA pull-down
current source. External resistors to V_EE may also be used to increase pull-down current to a maximum of 25mA each.
ENABLE TRUTH TABLE
EN-SEL EN (PECL/CMOS) Q_HG
NC
Low
Low
NC
High or NC
Data
V_EE*
Low or NC
Data
V_EE*
High
Low
*Connections to V_EE must be less than 1Ω.
Q¯ _HG
High
Data
Data
High
PIN DESCRIPTION
PIN
D/D¯
Q¯
AMPIN
FLTRDR/¯F¯L¯T¯R¯¯D¯R¯
Q_HG/Q¯ _HG
V_BB
EN
EN-SEL
FUNCTION
Inputs from Resonator
Output to Resonator
Inputs from Filter
Outputs to Filter
Outputs w/High Gain
Ref. Voltage Output
Enable Input
Selects Enable Logic
D
D
470Ω
VBB
AMPIN
470Ω
EN
EN-SEL
8mA
LIMITING AMP
Q
FLTRDR
FLTRDR
4mA
QHG
QHG
VEE
1630 S. STAPLEY DR., SUITE 127 • MESA, ARIZONA 85204 • USA • [phone] • FAX [phone]
www.azmicrotek.com