MAX1474 Miniature Electronically Trimmable Capacitor

Description

The MAX1474 is a fine-line (geometry) electronically trimmable 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 (see Table 1). The quartz dielectric capacitance is highly stable and exhibits a very low voltage 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.

Key Features

Applications/Uses

Tiny SC70 Package (1.1mm x 2.2mm x 2.4mm)
High-Performance Electronically Trimmable Capacitance
Very Simple Digital Interface
Eliminates the Need for Mechanical Tuning
Enabling Technology for Low-Cost Production Line Automation
Fully Static Operation After Programming (No Switching)

	Accelerometer Measurements
	Automotive Sensors
	Cell Phones
	Force Sensors
	Humidity Sensors
	Industrial Sensor Transmitters/Transducers
	Industrial Sensor Transmitters/Transducers
	Mobile Radios
	Piezoresistive Transducers
	Temperature Sensing and Monitoring

Key Specifications: Programmable Capacitors

Part Number

C
(pF)

Prog. Step
(pF)

Prog. Steps

Accuracy
(%)

V_SUPPLY
(V)

I_CC
(µA)

Digital Interface

Package/Pins

Smallest Available Pckg.
(mm²)

Price

min

max

typ

max

max w/pins

See Notes

MAX1474

6.4

13.3

0.22

2.7 to 5.5

Pulse Increment

SC70/6

$0.57 @1k

See All Programmable Capacitors (1)

Diagram

Functional Diagram

Application Notes

Application Note 2236: Gamma-Photon Radiation Detector - MAX1474

Reliability Reports

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Software/Models

none

Ordering Information

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Devices: 1-2 of 2

MAX1474 Free
Sample Buy Status

Package: TYPE PINS FOOTPRINT

DRAWING CODE/VAR *

Temp RoHS/Lead-Free?
Materials Analysis

MAX1474AXT+T

Active SC70;6 pin;5 mm²
Outline Drawing: 21-0077 (PDF)
Land Pattern: 90-0189 (PDF)
Use pkgcode/variation: X6SN+1*
-40°C to +125°C RoHS/Lead-Free: Lead Free
Materials Analysis

MAX1474AXT+

Active SC70;6 pin;5 mm²
Outline Drawing: 21-0077 (PDF)
Land Pattern: 90-0189 (PDF)
Use pkgcode/variation: X6SN+1*
-40°C to +125°C RoHS/Lead-Free: Lead Free
Materials Analysis

More Information

Topmark Coding: MAX1474

New Product Press Release 2001-02-05

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Document Ref.: 19-1948; Rev 1; 2001-09-07
This page last modified: 2009-10-26