ACTR3028 datasheet(2/5 Pages) ACT

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Electrical Characteristics

Reference Temperature:

TA=25℃

Characteristic

Sym

Minimum

Typical

Maximum

Unit

Center Frequency

(+25

℃)

Absolute Frequency

314.925

315.075

MHz

Tolerance from 315.000 MHz

∆f

±75

kHz

Insertion Loss

1.5

2.0

Quality Factor

Unloaded Q

11,270

Ω Loaded Q

1,800

Temperature

Stability

Turnover Temperature

℃

Turnover Frequency

kHz

Frequency Temperature Coefficient

FTC

0.032

ppm/ ℃

Frequency Aging

Absolute Value during the First Year

|fA|

≤10

ppm/yr

DC Insulation Resistance Between Any Two Terminals

1.0

Ω

RF Equivalent

RLC Model

Motional Resistance

Ω

Motional Inductance

108.2803

µH

Motional Capacitance

2.35999

Shunt Static Capacitance

2.50

2.80

3.10

RoHS Compliant

Electrostatic Sensitive Device

NOTE:

Unless noted otherwise, case temperature TC = +25°C±2°C.

The center frequency, fC, is measured at the minimum insertion loss point with the resonator in the

50Ω test system.

Frequency aging is the change in fC with time and is specified at +65°C or less. Aging may exceed the specification for

prolonged temperatures above +65°C. Typically, aging is greatest the first year after manufacture, decreasing in

subsequent years.

Turnover temperature, TO, is the temperature of maximum (or turnover) frequency, fO. The nominal frequency at any case

temperature, TC, may be calculated from: f = fO [1 - FTC (TO - TC)

2].

This equivalent RLC model approximates resonator performance near the resonant frequency and is provided for

reference only. The capacitance CO is the static capacitance between the two terminals measured at low frequency

(10MHz) with a capacitance meter. The measurement includes case parasitic capacitance.

Test Circuit

Temperature Characteristics

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