IDT8N4DV75 Data Sheet LVDS DUAL-FREQUENCY PROGRAMMABLE VCXO
IDT8N4DV85CCD
REVISION B NOVEMBER 20, 2013 7 ©2013 Integrated Device Technology, Inc.
NOTE: Electrical parameters are guaranteed over the specified ambient operating temperature range, which is established when the device is
mounted in a test socket with maintained transverse airflow greater than 500lfpm. The device will meet specifications after thermal equilibrium
has been reached under these conditions.
NOTE 1. V
C
= 0V to V
CC.
Oscillator gain is programmed by IDT. Gain = (25 * N) ÷ V
CC
and is in the range of n = 1 to n = 63.
NOTE 2. Nominal oscillator gain: Refer to the programming guide for optimal pull range and control voltage tuning
NOTE 3. For best phase noise performance, use the lowest K
V
that meets the requirements of the application.
NOTE 4. BSL = Best Straight Line Fit: Variation of the output frequency vs. control voltage V
C
in percent. V
C
ranges from 10% to 90% V
CC
.
odc Output Duty Cycle 45 55 %
t
OSC
Device startup time after
power-up
15 ms
t
SET
Output frequency settling time
after FSEL0 and FSEL1 values
are changed
1 ms
Table 5B. VCXO Control Voltage Input (V
C
) Characteristics, V
CC
=
3.3V ± 5% or V
CC
=
2.5V ± 5%, T
A
= -40°C to 85°C
Test Conditions Minimum Typical Maximum Units
K
V
Oscillator Gain; NOTE 1, 2, 3 V
CC
= 3.3V 7.57 477.27 ppm/V
Oscillator Gain NOTE 1, 2, 3 V
CC
= 2.5V 10 630 ppm/V
L
VC
Control Voltage Linearity BSL Variation -1 ±0.1 +1 %
BW Modulation Bandwidth 100 kHz
Z
VC
VC Input Impedance 500 k
VC
NOM
Nominal Control Voltage V
CC
/2 V
V
C
Control Voltage Tuning
Range; NOTE 4
0 V
CC
V
NOTE 1.This parameter is defined in accordance with JEDEC standard 65.
NOTE 2. Refer to the phase noise plot.
NOTE 3. Refer to the FemtoClock NG Ceramic 5 x 7 Modules Programming Guide for additional information on PLL feedback modes and the
optimum configuration for phase noise.
NOTE: Electrical parameters are guaranteed over the specified ambient operating temperature range, which is established when the device is
mounted in a test socket with maintained transverse airflow greater than 500 lfpm. The device will meet specifications after thermal equilibrium
has been reached under these conditions.
NOTE: Characterized with V
C
= V
CC
/2.
NOTE: XTAL parameters (initial accuracy, temperature stability, aging and total stability) are guaranteed by manufacturing.
Symbol Parameter
Table 5A. AC Characteristics, V
CC
=
3.3V ± 5% or V
CC
=
2.5V ± 5%, T
A
= -40°C to 85°C
Symbol Parameter Test Conditions Minimum Typical Maximum Units
