Specifications subject to change without notice. All dimensions in inches. © Copyright 2011 The Connor-Winfield Corporation

2111 Comprehensive Drive

Aurora, Illinois 60505

Phone: 630- 851- 4722

Fax: 630- 851- 5040

www.conwin.com

2111 Comprehensive Drive

Aurora, Illinois 60505

Phone: 630- 851- 4722

Fax: 630- 851- 5040

www.conwin.com

5x7mm

Precision TCXO

In Stock at Digi-Key

Description:

The Connor-Winfield’s D75AS is a 5x7mm

Surface Mount Temperature Compensated

Crystal Controlled Oscillator (TCXO)

with a Tri-State Clipped Sinewave output.

Through the use of Analog Temperature

Compensation, the D75AS is capable

of holding sub 1-ppm stabilities over the

0 to 70°C temperature range.

Operating Specifications

Parameter

Minimum

Nominal

Maximum

Units

Notes

Nominal Frequency (Fo)

-

20.0

-

MHz

Frequency Calibration @ 25 °C

-1.0

-

1.0

ppm

1

Frequency Stability vs. Temperature

-0.25

-

0.25

ppm

2

Frequency vs. Load Stability

-0.25

-

0.25

ppm

±5%

Frequency vs. Voltage Stability

-0.25

-

0.25

ppm

±5%

Static Temperature Hysteresis

-

-

0.4

ppm

3

Freq, shift after reflow soldering

-1.0

-

1.0

ppm

4

Aging (1st Year)

-1.0

-

1.0

ppm

Total Frequency Tolerance

-4.6

-

4.6

ppm

5

Operating Temperature Range:

0

-

70

°C

Supply Voltage (Vcc)

3.135

3.3

3.465

Vdc

±5%

Supply Current (Icc)

-

-

6

mA

Period Jitter

-

3

5

ps rms

Integrated Phase Jitter

-

0.5

1.0

ps rms

6

SSB Phase Noise at 10Hz offset

-

-80

-

dBc/Hz

SSB Phase Noise at 100Hz offset

-

-110

-

dBc/Hz

SSB Phase Noise at 1KHz offset

-

-135

-

dBc/Hz

SSB Phase Noise at 10KHz offset

-

-150

-

dBc/Hz

SSB Phase Noise at 100KHz offset

-

-150

-

dBc/Hz

Start-up Time

-

-

5

ms

Absolute Maximum Ratings

Parameter

Minimum

Nominal

Maximum

Units

Notes

Storage Temperature

-55

-

85

°C

Supply Voltage (Vcc)

-0.5

-

6.0

Vdc

Input Voltage

-0.5

-

Vcc+0.5

Vdc

Features:

Model: D75AS

3.3 Vdc Operation

Clipped Sinewave Output

Frequency Stability: ± 0.25 ppm

Temperature Range: 0 to 70°C

Low Jitter <1ps RMS

Tri-State Enable/Disable Function

5x7mm Surface Mount Package

Tape and Reel Packaging

RoHS Compliant / Pb Free

US Headquarters:

630-851-4722

European Headquarters:

+353-61-472221

Package Characteristics

Package

Hermetically sealed crystal mounted on a ceramic package

Notes:

1. Initial calibration @ 25°C. Specifications at time of shipment after 48 hours of operation.

2. Frequency stability vs. change in temperature. [±(Fmax - Fmin)/2.Fo].

3. Frequency change after reciprocal temperature ramped over the operating range. Frequency measured before and after at 25°C

4. Within two hours after reflow

5. Inclusive of calibration @ 25C, frequency vs. change in temperature, change in supply voltage (±5%), load change (±5%), reflow soldering process and 20 years aging,

referenced to Fo.

6. BW = 12 KHz to 20 MHz.

7. Leave Pad 8 unconnected if enable / disable function is not required. When tri-stated, the output stage is disabled but the oscillator and compensation circuit are still

active (current consumption < 1 mA).

8. Output is AC coupled.

9. For best performance it is recommended that the circuit connected to this output should have an equivalent input capacitance of 10pF.

Environmental Characteristics

Vibration:

Vibration per Mil Std 883E Method 2007.3 Test Condition A

Shock:

Mechanical Shock per Mil Std 883E Method 2002.4 Test Condition B.

Soldering Process;

RoHS compliant lead free. See soldering profile on page 2.

Ordering Information

D57AS-025.0M*

* For the tape and reel option, add -T to the end of the part number. Example: D75AS-25.0M-T

Enable / Disable Input Characteristics (Pad 8)

Parameter

Minimum

Nominal

Maximum

Units

Notes

Enable Voltage (High)

70%Vcc

-

Vdc

7

Disable Voltage (Low)

-

-

30%Vcc

Vdc

7

D75AS

1144

20.

0

MHZ

Bulletin

Tx243

Page

1 of 2

Revision

02

Date

03 Nov 2011

Clipped Sinewave Output Characteristics

Parameter

Minimum

Nominal

Maximum

Units

Notes

Voltage

1.0

-

-

V pk to pk

8

Load Resistance

-

10K

-

Ohm

Load

-

10

-

pF

9