M685 Datasheet Rev 0.4

4 of 7

Revised 16Nov2004

I n te g r at ed Ci rcui t Systems , In c. ● N e tw o r ki ng & Co mmun ica t io ns ● ww w. icst.co m ● tel (5 08 ) 85 2-5 4 0 0

Integrated

Circuit

Systems, Inc.

M685

Preliminar y In f o r m atio n

DC Characteristics for M685-02

Unless stated otherwise, V

Symbol Parameter

Pin

Min

Typ

Max

Unit

Power Supply V

CC

Positive Supply Voltage

VCC

2.97

3.3

3.63

V

I

CC

Power Supply Current

90

125

mA

Control

Voltage

V

IN

Input Control Voltage Range

VIN

0

3.3

V

V

100

k

Ω

Frequency

Note 1: Internally pulled down to Logic 0 (Frequency 1) if left unselected.

V

IH

Input High Voltage

F_SEL

2

V

IL

Input Low Voltage

0.8

V

I

IH

Input High Current

5

µA

I

IL

Input Low Current

µA

51

k

Ω

Differential

Outputs

V

OH

Output High Voltage

FOUT, nFOUT

V

OL

Output Low Voltage

V

P

Note 2: Single-ended measurement. See Figure 3, Output Rise and Fall Time, on pg. 5.

0.450

0.625

0.85

V

P

I

OUT

Output Current

20

mA

Table 7: DC Characteristics for M685-02

AC Characteristics for M685-02

Unless stated otherwise, V

Symbol Parameter

Min

Typ

Max

Unit Notes

Control Voltage V

IN

Modulation Bandwidth

VIN

600

kHz

Output

F

OUT

500

700

MHz

APR

Note 1: Also fully meets ±50 ppm minimum pull-range specification that is commonly required.

ppm

f

STAB

Frequency Stability

100

L

IN

Tuning Linearity

6

%

Best fit straight line

K

VCO

VCO Gain

400

Non-harmonic Spurious

-50

-77

dBc

Φn

SSB (single sideband)

Phase Noise, offset

from carrier

100Hz Offset

-42

dBc/Hz

1kHz Offset

-72

dBc/Hz

10kHz Offset

-102

dBc/Hz

100kHz Offset

-127

dBc/Hz

1MHz Offset

-146

dBc/Hz

J(t)

Jitter (rms)

12kHz to 20MHz

0.22

ps rms

50kHz to 80MHz

0.16

ps rms

odc

Note 2: See Parameter Measurement Information on pg. 5.

45

55

%

t

R

275

400

ps

20

t

F

275

400

ps

20

Table 8: AC Characteristics for M685-02