MAX1474 Maxim Integrated Products, MAX1474 Datasheet
MAX1474
Manufacturer Part Number
MAX1474
Description
Miniature Electronically Trimmable Capacitor
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX1474.pdf
(8 pages)
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The MAX1474 is a fine-line (geometry) electronically trim-
mable capacitor (FLECAP) programmable through a
simple digital interface. There are 32 programmable
capacitance values ranging from 6.4pF to 13.3pF in
0.22pF increments (Table 1). The quartz dielectric
capacitance is highly stable and exhibits a very low volt-
age coefficient. It has virtually no dielectric absorption
and has a very low temperature drift coefficient
(<33ppm/°C). The MAX1474 is programmed through two
digital interface pins, which have Schmidt triggers and
pulldown resistors to secure capacitance programming.
Maxim can customize the MAX1474 for specific high-
volume applications. Contact Maxim for further informa-
tion.
19-1948; Rev 1; 3/01
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
TOP VIEW
Miniature Electronically Trimmable Capacitor
Post-Trim of Low-Cost Regenerative Receivers
Tunable RF Stages
Low-Cost, Low-Temperature Drift Oscillators
Garage Door Openers
Keyless Entry
Industrial Wireless Control
Capacitive Sensor Trimming
RFID Tags
V
________________________________________________________________ Maxim Integrated Products
CP
EN
DD
1
2
3
General Description
MAX1474
SC70
Pin Configuration
Customization
Applications
6
5
4
CM
V
DAT
SS
o Tiny SC70 Package (1.1mm x 2.2mm x 2.4mm)
o High-Performance Electronically Trimmable
o Very Simple Digital Interface
o Eliminates the Need for Mechanical Tuning
o Enabling Technology for Low-Cost Production
o Fully Static Operation After Programming
V
MAX1474AXT-T
CP
Capacitance
Line Automation
(No Switching)
DD
EN
PART
6pF
-40°C to +125°C 6 SC70-6
TEMP. RANGE
Ordering Information
LOGIC INTERFACE
Functional Diagram
0.2pF
0.4pF
0.8pF
1.6pF
3.2pF
PIN-
PACKAGE
Features
6pF
MARK
TOP
AAT
CM
DAT
V
SS
1
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