ARIZONA MICROTEK, INC.
AZP81
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
MLP 16 (3x3) Green /
RoHS Compliant /
Lead (Pb) Free
1
2
PART NO.
AZP81LG
MARKING
AZMG
P81
<Date Code>
NOTES
1,2
Add R1 at end of part number for 7 inch (1K parts), R2 for 13 inch
(2.5K parts) Tape & Reel.
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/FLTRDR 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
Low or NC
Data
V
EE
*
High
Low
V
EE
*
*Connections to V
EE
must be less than 1Ω.
PIN DESCRIPTION
PIN
D/D
¯
Q
¯
AMPIN
FLTRDR/FLTRDR
¯¯¯¯¯¯¯¯
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
AMPIN
LIMITING AMP
Q
HG
¯
High
Data
Data
High
V
BB
D
D
Q
FLTRDR
470Ω
FLTRDR
8mA
4mA
470Ω
Q
HG
Q
HG
EN
V
EE
EN-SEL
1630 S. STAPLEY DR., SUITE 127
•
MESA, ARIZONA 85204
•
USA
•
(480) 962-5881
•
FAX (623) 505-2414
www.azmicrotek.com
AZM [ ARIZONA MICROTEK, INC ]
