Niku™ Ultra-Low Phase Noise, Low RMS Jitter TCXO/TCVCXO

RTN7050A
The RTN7050A is a Stratum 3 ultra-stable TCXO offering up to ±100 ppb frequency versus temperature stability. It is poweredby Rakon’s proprietary Niku™ ASIC and XMEMS® resonator. Combined, these technologies bring an extended frequency
range of 10 to 100 MHz, a wider operating temperature range of -40 to 105°C, and a low acceleration sensitivity (g-sensitivity)of 0.2 ppb/g. The RTN7050A boasts unparalleled close-in phase noise (-125 dBc/Hz at 100 Hz, 38.88 MHz) and a floor noise as
low as -170 dBc/Hz, making it the oscillator of choice for applications requiring high frequency, low noise, low RMS jitter andhigh stability reference clocks.
For today's high-demanding applications, where precision and reliability of reference clocks are vital, the Niku™ RTN7050A
ensures consistent and accurate performance as a result of a combination of compact design, rigorous manufacturing
processes, and high-resolution testing methods. This ultra stable TCXO addresses a wide range of applications including 5Gand 5G Advanced radio heads and small cells, AI computing/data centres, precision positioning, aerospace and defence,satellite terminals, automotive/V2X and Industry 5.0.

Key specifications
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Package: 7.5 x 5.0 x 1.5 mm, 10-pad, SMD
Frequency: 10 to 100 MHz
Operating temperature: -40 to 105°C
Frequency stability (FvT): ±100 ppb
Long term stability: ±4.6 ppm/20 yr
Floor noise: -170 dBc/Hz @ 38.88 MHz
Acceleration sensitivity: 0.2 ppb/g
Output waveform: Clipped sinewave or CMOS
Voltage supply: 2.5, 3.0, 3.3 and 5 V

Applications
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Cellular networks
AI computing/Data centres
Automotive/V2X
Industry 5.0
GNSS precision positioning
NetworkingPrecision agriculture
Defence systems
Satellite terminals

Phase Noise
38.88 MHz Niku™ TCXO Phase Noise

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Niku™ Ultra-Low Phase Noise, Low RMS Jitter TCXO/VCTCXO

RTN7050A
1.0

Absolute Maximum Rating 1Parameter

Min.

Max.

Unita. Power supply-0.67.0V

b. Storage temperature-55125°C

2.0

NoteFrequency Characteristics 2ParameterMin.

a. Nominal frequency (Fn)

Typ.

Max.

10 to100

Unit

Test Condition / Description

MHzStandard Fn: 10, 19.2, 19.44, 20, 38.4, 38.88, 40,
50 and 80MHz

b. Frequency calibration±1ppm

Offset from nominal frequency measured at 25°C
±2°C, Vc=1.5/1.65V

c. Reflow shift±1ppm

Two consecutive reflows as per the attachedprofile after 2 hours of relaxation at 25°C

+105°CThe operating temperature range over which thefrequency stability is measurede. Frequency stability overtemperature (FvT) 3, 4±100±120±200±280ppb-40 to 85°C (for 10 to 55 MHz)
-40 to 95°C (for 10 to 55 MHz)
-40 to 105°C (for 10 to 55 MHz)
-40 to 105°C (for 55 to 100 MHz)f.

±20±25±50±100ppb/°C-40 to 85°C (for 10 to 55 MHz)
-40 to 95°C (for 10 to 55 MHz)
-40 to 105°C (for 10 to 55 MHz)
-40 to 95°C (for 55 to 100 MHz)
Minimum of one frequency reading every 2°C
over the operating temperature rangeppb

Operating temperature range (Optional spec)

d. Temperature range-40

Frequency slope3, 4g. Hysteresis 5±50h. Sensitivity to supply voltagevariations±25±50ppb

Supply voltage varied ±5% at 25°Ci.

Sensitivity to load variations±25±50ppb±10% load change at 25°C 6j.

Long term stability (at 25°C)±4.0±10±1±3±4.6ppb
ppm
ppm
ppm

Per day, after 30 days of continuous operation
1 year10 years
20 years, all-cause stability

1 Operating beyond this limit may result in change or permanent damage to the device.

For optimal frequency stability, the output load must be stable over temperature. Buffer may be recommended depending on the application.
Referenced to the midpoint between minimum and maximum frequency value over the specified temperature range. The temperature varied at a maximumof 1°C per minute.
4 Parts should be shielded from drafts causing unexpected thermal gradients. Temperature changes due to ambient air currents on the oscillator can lead toshort-term frequency drift
5 The hysteresis performance is related to the filter capacitance to be used. Filter options refer to the RAV section.
6 Measurement load condition is 10kΩ//10pF for CS and 15pF for CMOS
23Issue: A, 25 October 2023
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Niku™ Ultra-Low Phase Noise, Low RMS Jitter TCXO/VCTCXO
3.0

Power SupplyParameterMin.

a. Supply voltage (VDD)

Max.

Unit

Test Condition / Description

VNominal VDD (±5%). Standard values are 2.5V,
3.0V, 3.3V and 5VmA

At nominal 3.3V VDD,
10MHz at 10pF//10kΩ
40MHz at 10pF//10kΩ
80MHz at 5pF

mA

At nominal 3.3V VDD,
10MHz at 15pF
40MHz at 15pF
80MHz at 5pF

Max.

Unit

Test Condition / Description

2.5 to5.0

b. Current(Clipped Sinewave)

9.4
1518

c. Current(CMOS)

4.0

Typ.

101724Control Voltage (Vc)

Parameter

Min.

Typ.

a. Control voltage range 70.25

2.25

V

VDD ≥ 2.5V

b. Control voltage range120.5

2.5

V

VDD ≥ 3.0V

c. Control voltage range120.65

2.65

V

VDD ≥ 3.3V

d. Frequency tuning±5±10ppm

Reference to frequency at Vc=1.25/1.5/1.65V

10%

Deviation from straight line curve fit

e. Frequency tuning linearityf.

SlopePositiveg. Modulation bandwidthh. Input impedance

5.01Hz100kΩ

Oscillator Output – Clipped Sinewave 8Parameter

Min.

Typ.

0.8

1.2

Max.

Unit

Test Condition / Description

Vpp

At minimum supply, 10kΩ//10pF loadmsTime taken for output to reach 90% amplitude

a. Output waveformb. Output voltage level

DC coupled clipped sinewave

c. Start-up time (amplitude)

10d. Output load resistance10kΩ

e. Output load capacitance

10pF

5pF for Fn ≥ 55MHzMax.

Unit

Test Condition / Description

10% VDD

V

6.0

Oscillator Output – CMOS 9Parameter

Min.

Typ.

a. Output voltage level low (VOL)b. Output voltage level high (VOH)

80% VDDc. Rise and fall times timef.

Duty cycle

V340

ns60

10% to 90% amplitude
Measured at 50% me.

7 Wider range subject to engineering approval
8 This part has a 1.2V regulated CMOS output for better isolation from supply and board noise. It is suitable for driving inputs that require a clipped sinewave

signal. If an AC coupled output is required a 10nF capacitor should be placed in series with the output. The nominal load condition is 10kΩ ∥ 10pF (includingprobe).
9 This part has a 2.8V regulated CMOS output for better isolation from supply and board noise. It can be used to drive LVCMOS and LVTTL inputs as per theJESD8C.01 standard. The nominal load capacitance is 15pF (including probe).

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g. Output load

15h. Start-up time

7.010pF

5pF for Fn ≥ 55MHz

ms90% amplitude

Unit

Test Condition / Description

Oscillator Output – Temperature Sensor Option

Parameter

Min.

Typ.

Max.

a. Temperature sensor output
voltage

0.95

V

At 25°C

b. Temperature sensor slope-8mV/°C-55 to 105°C range

d. Temperature sensor

8.010pF

Max.

Unit

Tri-State Control 10

Parameter

Min.

Typ.

a. Tri-state mode

The device features a tri-state mode whichallows the output to be disabled and brought
into a high impedance stateb. Tri-state control (pin 1/8), input
level low (VIL)c. Tri-state control (pin 1/8), input
level high (VIH)

9.0

Test Condition / Description

20%VDD
80%VDDV

Device disabled (output in high impedancestate)V

Device enabled (operating)

Unit.

Test Condition / Description

SSB Phase Noise (38.8 MHz, Typical value at 25°C)

Parameter

Min.

Typ.

Max.

1Hz offset-69

dBc/Hz

10Hz offset-97

dBc/Hz

100Hz offset-125

dBc/Hz

1kHz offset-145

dBc/Hz

10kHz offset-162

dBc/Hz

100kHz offset-168

dBc/Hz1MHz offset-170

dBc/Hz5MHz offset-170

dBc/HzRMS phase Jitter

41fs

10.0 Root Allan Variance (Typical value at 25°C)
ParameterMin.

a. Root Allan Variance (RAV)

Typ.
3*10-11
4*10-11
8*10-11
1*10-10Max.

Test Condition / Description
tau = 0.1s
tau = 1.0s
tau = 10s
tau = 100s

10 The tri-state control (enable) input pin has an internal 100kΩ pull up resistor which allows it to be left unconnected if not used. When in tri-state mode,the output stage is disabled, but the oscillator and compensation circuit are still active.

Issue: A, 25 October 2023
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11.0 MarkingParameter

Test Condition / Description

a. TypeEngravedb. Line 1[R FFFF YM ]Rakon identifier R, Frequency FFFF (M=MHz, e.g. 19M4=19.44MHz),Year Y (A=2010, B=2011, …), Month M (1=Jan, 2=Feb, …, A=Oct, B=Nov, C=Dec)

c. Line 2[ • XXX LLL ]Pin 1 identifier •, Internal code XXX, Lot code LLL

12.0 Manufacturing Information
Parameter

Test Condition / Description

a. Reflow

Reflow profile as per IPC/JEDEC J-STD-020E (see drawing)b. Packaging description

Tape & Reel as per EIA-481-E (see drawing)c. Net weight

0.15g/pc

13.0 Environmental Specification 11
Parameter

Test Condition / Description

a. RoHS compliant

Parts are fully compliant with the European Union directives 2011/65/EU and 2015/863/EU(amending annex II to directive 2011/65/EU) on the restriction of the use of certain hazardous
substances in electrical and electronic equipment

b. Solderability

JESD22-B102. Method 2, precondition 150°C, 16 hours

c. Latch up

EIA/JESD78, tested at room temperature and maximum ambient operating temperature

d. Electrostatic discharge (ESD)e. High temperature storage

Human Body Model (HBM), JS-001-2012, ≥ 2000V
Charged Device Model (CDM), JS-002-2022, corner pins ≥ 1000V, middle pins ≥ 500V
JESD22-A103, 1000 hours at 150°C, unbiasedf.

JESD22-A119, 1000 hours at -55°C, unbiased

Low temperature storageg. Thermal shock

MIL-STD-883 Method 1011, 15 cycles from -55°C to 125°C

h. Temperature humidity bias

EIA/JESD22-A101, +85°C / 85% RH, 1008 hours, at max. Vcc

i.

Temperature cycling

JESD22-A104, 1000 cycles, -55°C to +125°C, non-operating, 5 to 10 minutes soakj.

High temperature operating life

JESD22-A108D, +125°C, 1008 hours, at max. Vcc

k. Monitored ageing

MIL-PRF-55310F, 1000 hours at +85°Cl.

JESD22-B-104, 1500g peak, 0.5ms pulse duration, 5 pulses in each of 6 directions

Mechanical shock

m. Mechanical vibration

JESD22-B-103, 20g peak acceleration, 10-2000Hz, 4 minutes sweep, 4 sweeps x 3 axes

11 For all relevant tests the units are pre-conditioned as per JESD22-A113 (5 temperature cycles -40°C to +60°C + bake for 24 hours at T = +125°C + moisturesoak for 168 hours at +85°C / 85% RH + 3x reflow at TMAX = +260°C).

Issue: A, 25 October 2023
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Niku™ Ultra-Low Phase Noise, Low RMS Jitter TCXO/VCTCXO
14.0 Model Outline

PinConnections

1

Do not connect / Tri-state (Enable) / T-sensor(VTEMP)2, 3, 6, 7

NC

4

GND

5RF Output

8

Do not connect / Tri-state (Enable) / T-sensor(VTEMP)

9

Supply Voltage (VCC)

10

Do not connect / Control Voltage (Vc)

15.0 3D Model
Parameter

Remarks

Package size

7.0 x 5.0 x 1.5 mm

STEP file

RTN7050 10-pad 3D model
To open or view the STP file, you will need to import it into one of the following software programs:
Autodesk Fusion 360, CATIA, SolidWorks, Solid Edge, TurboCAD, Kubotek KeyCreator, FreeCAD, ABViewer, ShareCAD,or eMachineShop.

Issue: A, 25 October 2023
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Niku™ Ultra-Low Phase Noise, Low RMS Jitter TCXO/VCTCXO

16.0 Test Circuit

Output Load

C2CLRL

Clipped Sinewave* 10 nF (AC coupled)* 0 (DC coupled)

10 pF (10 to 55 MHz)
5 pF (55 to 100 MHz)

10 kΩ

N /A

15 pF (10 to 55 MHz)
5 pF (55 to 100 MHz)

∞CMOS

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17.0 Tape and Reel

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18.0 Reflow

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Niku™ Ultra-Low Phase Noise, Low RMS Jitter TCXO/VCTCXO

19.0 Disclaimer
Parameter

Test Condition / Description

a. Disclaimer"Samples supplied according to this specification are supplied from our development or preproduction programme and are not qualification approved products. No condition, warranty
or representation regarding quality, suitability, performance, life or continuation of supply isgiven or implied and Warranty in clause 7 of our standard Conditions of Sale is not applicable.
The right is reserved to change the design or specification or cease supply without notice."
Rakon Limited

Issue: A, 25 October 2023
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