AZT71_1301 Datasheet, PDF (1/14 Pages) Arizona Microtek, Inc – Programmable Capacitive Tuning IC

AZT71
Programmable Capacitive Tuning IC www.azmicrotek.com
DESCRIPTION
The AZT71 is a digitally programmed capacitor designed to tune a filter
or a crystal/SAW based oscillator to a desired center frequency. Through
a bank of registers, the capacitance value is set by a serial data stream and
if desired, can be permanently stored in the nonvolatile EEPROM
memory. The AZT71 is designed to be a labor and cost saving device
within the oscillator production process and provide the desired
functionality for tunable filter banks.
While incorporating very small step sizes (0.063pF), multiple AZT71
devices can also be used in parallel to obtain higher overall capacitance
values.
The AZT71 is available in an SON8 package (1.5mm x 1.0mm) for very
small form factor designs. Also available in MLP6 and TSOT6.
BLOCK DIAGRAM
V_DD
X₁
DA
CLK
PV
V_SS
C_F
6.6pF
CONTROLLER ^b10-b9
b8-b6
b5-b1
C_hi
0-19.2pF
C_mid
0-9.8pF
C_lo
0-1.953pF
FEATURES
• Capacitive tuning range of
6.6pF to 37.553pF
(See AZT70 for different values)
• 0.063pF minimum step size
• Continually programmable
with register or EEPROM data
storage
• May be placed in parallel for
greater capacitance values
• 2.5V to 3.6V supply voltage
APPLICATIONS
• Filters requiring capacitive tuning
• Fast production tuning of crystal
and SAW oscillators
PACKAGE AVAILABILITY
• SON8
• MLP6
• TSOT6
• Green/RoHS/Pb-Free
Order Number
Package
Marking
AZT71QG¹
SON8
Y<Date Code>²
AZT71HG¹
TSOT6
Y1G
<Date Code>²
AZT71MG¹
MLP6
Y1G
<Date Code>²
1 _{Tape & Reel - Add 'R1' at end of order number for 7in (1k parts), 'R2' (2.5k) for 13in}
2 _{See www.azmicrotek.com for date code format}
www.azmicrotek.com
[phone]
Request a Sample
1630 S Stapley Dr, Suite 127
Mesa, AZ 85204 USA
Jan 2013, Rev 1.3