PL500-37SC-R datasheet(4/6 Pages) MICREL

4 / 6 page

(Preliminary)

PL500-37

Low Phase Noise VCXO (36MHz to 130MHz)

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 944-0800 • fax +1(408) 474-1000 • www.micrel.com Rev 09/09/05 Page 4

4. Voltage Control Crystal Oscillator

PARAMETERS

SYMBOL

CONDITIONS

MIN.

TYP.

MAX.

UNITS

VCXO Stabilization Time *

TVCXOSTB

From power valid

VCXO Tuning Range

FXIN = 36 – 130MHz;

XTAL C0/C1 < 250

 VCON  3.3V

300

ppm

CLK output pullability

VCON=1.65V, 1.65V

150

ppm

VCXO Tuning Characteristic

100

ppm/V

Pull range linearity

Power Supply Rejection

PWSRR

Frequency change with

VDD varied +/- 10%

-1

ppm

VCON pin input impedance

5000

kΩ

VCON modulation BW

 VCON  3.3V, -3dB

kHz

Note: Parameters denoted with an asterisk (*) represent nominal characterization data and are not production tested to any specific limi ts.

5. Crystal Specifications

PARAMETERS

SYMBOL

CONDITIONS

MIN.

TYP.

MAX.

UNITS

Crystal Resonator Frequency

FXIN

130

MHz

Crystal Loading Rating

CL (xtal)

(see note

below)

VCON = 1.65V, 3.3 V

5.1

VCON = 1.25V, 2.5V

5.7

Maximum Sustainable

Drive Level

200

Operating Drive Level

Max C0

2.5

C0/C1

250

ESR

C0 ≤ 2.0pF, FXIN up to 85MHz

C0 ≤ 2.5pF, FXIN up to 80MHz

C0 ≤ 3.0pF, FXIN up to 75MHz

C0 ≤ 2.0pF, FXIN up to 95MHz

C0 ≤ 2.5pF, FXIN up to 90MHz

C0 ≤ 3.0pF, FXIN up to 85MHz

C0 ≤ 2.0pF, FXIN up to 110MHz

C0 ≤ 2.5pF, FXIN up to 105MHz

C0 ≤ 3.0pF, FXIN up to 100MHz

C0 ≤ 2.0pF, FXIN up to 130MHz

C0 ≤ 2.5pF, FXIN up to 120MHz

C0 ≤ 3.0pF, FXIN up to 115MHz

Note: The crystal must be such that it oscillates (parallel resonant) at nominal frequency when presented a C Load as specified above.

If the crystal requires more load to be at nominal frequency, the additional load must be added externally. This ho wever may reduce the pull range.

Note that the Cload values above are for the IC only, and do not include PCB parasitics. Crystal specifications for Cload include PCB paras itics.

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