NJU6222 Series
PRELIMINARY
Low phase noise Fundamental Quartz Crystal Oscillator IC
■GENERAL DESCRIPTION
The NJU6222 series is a C-MOS quartz crystal oscillator IC
(20MHz to 50MHz) realized very low phase noise. It is
consisted of an oscillation amplifer, divider (f0/2, f0/4), and
3-state output buffer.
There are 2-type of pad location for Flip chip and Wire
bonding that apply SMD’s 2016-package and more miniature.
The NJU6222 in low voltage operation features low phase
noise, it is suitable for high quality Hi-Fi sound device,
Communication device, and others by battery drive.
■FEATURES
●Oscillation Frequency
●Frequency Stability
●Wide Operating Voltage
●Very Low Phase Noise
●RMS Jitter
■PACKAGE OUTLINE
NJU6222XxC-V
20~50MHz(Fundamental)
±1ppm@VDD=1.8V±10%, VDD=3.3V±10%
1.62 to 3.63V
-103dBc/√Hz(Typ.) @49.152MHz,10Hz offset, VDD=1.8V
-158dBc/√Hz (Typ.) @49.152MHz, 1kHz offset, VDD=1.8V
-103dBc/√Hz(Typ.) @49.152MHz, 10Hz offset, VDD=3.3V
-163dBc/√Hz(Typ.) @49.152MHz, 1kHz offset, VDD=3.3V
0.10psec(Typ.) 12kHz~20MHz, VDD=1.8V
0.05psec(Typ.) 12kHz~20MHz, VDD=3.3V
3.1mA (Typ.) @49.152MHz, VDD=1.8V, CL=15pF
f0/2, f0/4（Factory set）
Oscillation Stop and High Impedance Output “FOUT” terminal
●Low Operating Current
●Built-in Divider
●Stand-by Function
(CONT terminal: L)
●3-State Output Buffer
●Built-in Variable Pull-up Resistance (CONT: Pull-up Resistance large at the Stand-by mode.)
●Built-in Oscillation Capacitors Cg and Cg
●C-MOS Technology
●Package Outline
Die / 8-inch Wafer / 1/4 cut wafer
■BLOCK DIAGRAM
VDD
VSS
OSC
Detector
XTO
Rf
XTI
Divider
Cg
Cd
3-State
Buffer
FOUT
CONT
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NJU6222 Series
PRELIMINARY
■LINE-UP TABLE
Type No.
FOUT
NJU6222
f0
f0/2
f0/4
Version
Type A
A1
A2
A3
Type C
C1
C2
C3
■PAD LOCATION
Type A
( For Flip Chip Bonding )
1
VSS
FOUT
Ｙ
CONT
2
3
(0,0)
XTI
XTO
Ｘ
Type C
( For Wire Bonding )
1
VDD
5
CONT
4
Ｙ
X
-174
-186
-174
174
186
174
Y
190
0
-190
-190
0
190
FOUT
(0,0)
3
6
VSS
2
XTI
Ｘ
5
4
XTO
■PART NUMBER
NJU6222 □□
■COORDINATES
Pad No.
1
2
3
4
5
6
VDD
6
□-□
W-V: Wafer (130μm)
W-100: Wafer (*100μm)
C-V: Die (130μm)
C-100: Die (*100μm)
Version
Device name
Starting Point: Die Center Unit[μm]
Die Size: 0.580x0.588mm
Die Thickness (C-V): 13015μm
Die Thickness (C-100): *10015μm
Wafer Thickness (W-V): 13020μm
Wafer Thickness (W-100): *10020μm
Pad size: 80x80μm
Die Substrate: VSS level
Note*) Under development
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NJU6222 Series
PRELIMINARY
■TERMINAL DESCRIPTION
SYMBOL FUNCTION
Oscillation and 3-state Output Buffer Control
CONT
FOUT
Output one frequency selected out of f0, f0/2
CONT
H or OPEN
and f0/4 Note1)
L
Oscillation Stop and High impedance Output
XTI
Quartz Crystal Connection terminals
XTO
VSS
GND terminal (VSS=0V)
FOUT
Frequency Output terminal (3-State Output Buffer)
VDD
Power Supply terminal VDD=1.62 to 3.63V
Note1) Refer to the line-up table.
■FUNCTIONAL DESCRIPTION
●Standby Function
When CONT Terminal is “Low”, the FOUT Terminal output is High impedance.
CONT
High(Open)
Low
FOUT
Frequency output
High impedance
Oscillator
Normal operation
Stop
When not using Stand-by function, CONT terminal is recommended to connect to VDD.
●Built-in Variable Pull-up Resistance of CONT terminal
The built-in pull-up resistance value of CONT Terminal changes in response to the input level. When CONT is “LOW”
level, the pull-up resistance value is large to reduce the current consumption by the resistance. When CONT is open
or connected to VDD, the pull-up resistance value is small to decrease the input susceptibility to external noise. It
works to prevent an unexpectedly stopping of the output by external noise.
■ABSOLUTE MAXIMUM RATINGS
(VSS=0V, Ta=25C)
RATING
UNIT
-0.6 to +6.0
V
-0.6 to +VDD+0.6
V
Input Voltage
VIN
and ≦6.0V
Output Voltage
VO
-0.6 to VDD+0.6
V
Input Current
IIN
mA
10
Output Current
IO
mA
25
Operating Temperature Range
Topr
-40 to +125
C
Storage Temperature Range
Tstg
-55 to +150
C
Note2) If the LSI used condition above the absolute maximum ratings, the LSI may be destroyed.
Use beyond the electric characteristics conditions will cause mal-function and poor reliability.
PARAMETER
Supply Voltage
SYMBOL
VDD
■ELECTRICAL CHARACTERISTICS
PARAMETER
Operating Voltage
Input Voltage
Output Voltage
Output Frequency
Stability
SYMBOL
VDD
VIN
VOUT
df/f
CONDITIONS
fosc=50MHz
CONT
FOUT
VDD±10%
MIN
1.62
0
0
TYP
-
MAX
3.63
3.63
VDD
-
±1
-
(Ta=25C)
UNIT
V
V
V
ppm
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NJU6222 Series
PRELIMINARY
PARAMETER
Operating Current
Stand-by Current
Output Voltage
Input Voltage
Input Current
3-state Off Leakage
Current
SYMBOL
IDD
ISTB
VOH
VOL
VIH
VIL
IIN
IOZ
CONDITIONS
x1 version (f0)
VDD=1.8V
No load
MEASURMENT
VDD=2.5V
CIRCUIT(1)
f0=49.152MHz
Fout=49.152MHz VDD=3.3V
x2 version (f0/2)
VDD=1.8V
No load
MEASURMENT
VDD=2.5V
CIRCUIT(1)
f0=49.152MHz
VDD=3.3V
Fout=24.576MHz
x3 version (f0/4)
VDD=1.8V
No load
VDD=2.5V
MEASURMENT
CIRCUIT(1)
f0=49.152MHz
VDD=3.3V
Fout=12.288MHz
x1 version (f0)
VDD=1.8V
CL=15pF
MEASURMENT
VDD=2.5V
CIRCUIT(1)
f0=49.152MHz
Fout=49.152MHz VDD=3.3V
VDD=1.8V
MESURMENT
CIRCUIT(1)
VDD=2.5V
CONT=VSS
VDD=3.3V
MEASURMENT CIRCUIT(2)
MEASURMENT CIRCUIT(3)
MEASURMENT CIRCUIT(4)
VDD=1.62V, CONT=VDD
MEASURMENT CIRCUIT(4)
VDD=1.62V, CONT=VSS
MEASURMENT CIRCUIT(4)
VDD=3.63V, CONT=VDD
MEASURMENT CIRCUIT(4)
VDD=3.63V, CONT=VDD
MEASURMENT CIRCUIT(5)
CONT=VSS, FOUT= VDD or VSS
(VDD=1.62 to 3.63V, VSS=0V, Ta=25°C)
MIN
TYP
MAX
UNIT
-
1.8
2.9
-
3.3
4.8
-
5.5
7.7
-
1.4
2.4
-
2.7
4.1
-
4.8
6.6
-
1.2
2.1
-
2.4
3.7
-
4.3
6.1
-
3.1
4.1
-
5.1
6.6
-
7.9
9.9
VDD-0.4
0.7VDD
4.0
5.0
6.0
-
25.0
30.0
35.0
-
-
0.065
-0.5
-
-
-
-
0.150
-
-
-10
-
-
±0.1
0.4
0.3VDD
mA
µA
V
V
V
V
µA
µA
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NJU6222 Series
PRELIMINARY
PARAMETER
Feedback Resistance
Built-in
Oscillation
Capacitor
Oscillation Frequency
Output Signal
Symmetry
SYMBOL
Rf
Cg
Cd
fosc
SYM
CONDITIONS
fosc=50MHz
fosc=50MHz
Recommendation
(VDD=1.62 to 3.63V, VSS=0V, Ta=25°C)
MIN
TYP
MAX
UNIT
50
kΩ
8
pF
17
pF
50
MHz
MEASURMENT CIRCUIT(1),@VDD/2
45
50
55
%
10Hz offset
-103
1kHz offset
-158
dBc/
Floor
-166
Phase Noise
SSB
√Hz
10Hz offset
-103
fOSC=49.152MHz.
1kHz offset
-163
VDD=3.3V
Floor
-172
3.1
4.7
ns
VDD=1.8V
Output Signal Rise
CL=15pF
VDD=2.5V
1.8
2.7
ns
tr
Time
0.1VDD to 0.9VDD
VDD=3.3V
1.3
2.0
ns
2.8
4.2
ns
VDD=1.8V
Output Signal Fall
CL=15pF
tf
VDD=2.5V
1.8
2.7
ns
Time
0.9VDD to 0.1VDD
VDD=3.3V
1.4
2.1
ns
Output Disable time
tPOZ
MEASURMENT CIRCUIT(6)
200
ns
Output Enable time
tPZO
MEASURMENT CIRCUIT(6)
1.0
ms
Oscillation Start time
tOSC
MEASURMENT CIRCUIT(1)
1.0
ms
Note3) Decoupling capacitor should be connected between VDD and VSS due to the stabilized operation the circuit.
Note4) The oscillation frequency range has used NJRC’s standard crystal for measurement. However it is not
guaranteed. (Refer to EXAMPLE OF CRYSTAL PARAMETERS FOR MEASUREMENT CIRCUITS)
fOSC=49.152MHz.
VDD=1.8V
■EXAMPLE OF CRYSTAL PARAMETERS FOR MEASUREMENT CIRCUITS
L1
C1
R1
f[MHz]
49.152
R1[Ω]
17.7
L1[mH]
3.83
C1[fF]
2.74
C0[pF]
1.23
C0
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NJU6222 Series
PRELIMINARY
■MEASUREMENT CIRCUITS
(1) Operating Current, Stand-by Current, Output Signal Symmetry, Output Signal Rise/Fall Time
(CL=0pF, 15pF)
ITEM
IDD(CL=0pF)
IDD(CL=15pF)
Istb
SYM, tr, tf
tOSC
SW1
OFF
ON
ON or OFF
ON
ON
SW2
OFF
OFF
ON
OFF
OFF
ITEM
VOH
VOL
SW1
OFF
ON
SW2
OFF
OFF
ITEM
CONT>0.7VDD
CONT<0.3VDD
FOUT
Oscillation
Stop
(2) H Level, L Level Output Voltage
(3) H Level, L Level Input Voltage
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NJU6222 Series
PRELIMINARY
(4) Input Current (CL=15pF)
(5) 3-state Leakage Current
ITEM
IOZH
IOZL
SW1
ON
OFF
SW2
OFF
ON
(6) Output Disable Time (CL=15pF, RL=1kΩ)
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NJU6222 Series
PRELIMINARY
■TIMING CHART
tf
tr
0.9VDD
0.5VDD
0.1VDD
H
L
DUTY=H/(H+L)×100[%]
Fig.1 Output Signal Rise Time, Output Signal Fall Time, Output Symmetry
VDD
0.7VDD
CONT
0.3VDD
VSS
tpzo
tpoz
VDD
0.5VDD
FOUT
VSS
Oscillation
Hi-Z
Low
Oscillation
Fig.2 Output Disable time: tpoz, Output Enable time: tpzo, Timing Chart
VDD
VDD
0.7VDD
VSS
tosc
VDD
FOUT
0.5VDD
VSS
Hi-Z
Low
Oscillation
Fig.3 Oscillation Start time: tOSC
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NJU6222 Series
PRELIMINARY
■TYPICAL CHARACTERISTICS
IDD(CL=15pF)
125OC
125OC
85OC
85OC
25OC
25OC
-40OC
O
-40 C
Phase Noise
Negative Resistance
C0=3pF
C0=2pF
C0=1pF
C0=0pF
C0=3pF
C0=2pF
C0=1pF
C0=0pF
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NJU6222 Series
PRELIMINARY
C0=3pF
C0=2pF
C0=1pF
C0=0pF
125℃
C0=3pF
C0=2pF
125℃
C0=1pF
C0=0pF
85℃
85℃
25℃
-40℃
C0=3pF
C0=2pF
C0=1pF
C0=0pF
C0=3pF
C0=2pF
C0=1pF
C0=0pF
C0=3pF
C0=3pF
C0=2pF
C0=2pF
C0=1pF
C0=1pF
C0=0pF
C0=0pF
Note; A negative resistance 3 to 5 times the equivalent series resistance is said to be required for
sufficient oscillation margin.
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NJU6222 Series
PRELIMINARY
･ tr
･SYM
125OC
85OC
25OC
-40OC
O
25OC
85OC
125 C
-40OC
･ tf
･ df/f
-40OC
25OC
125OC
85OC
85OC
125OC
25OC
-40OC
･ Drive Level
･ tOSC
125OC
85OC 25OC
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NJU6222 Series
PRELIMINARY
･Waveform
Fosc=49.152MHz、VDD=1.8V、CL=15pF、Temp=25℃
Fosc=49.152MHz、VDD=3.3V、CL=15pF、Temp=25℃
[CAUTION]
The specifications on this data book are only
given for information , without any guarantee
as regards either mistakes or omissions.
The application circuits in this data book are
described only to show representative usages
of the product and not intended for the
guarantee or permission of any right including
the industrial rights.
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