NPC WF5041A4B-4

5041 series
High-stability Crystal Oscillator IC with Frequency Adjustment Function
OVERVIEW
The 5041 series are high-stability clock oscillator ICs with built-in frequency adjustment functions. The
frequency adjustment functions can be optimized, by the addition of a minimal adjustment process, to improve
the frequency stability. The function is implemented using frequency adjustment data written to a built-in
EEPROM over a 1-wire serial interface. The ICs are ideal for compact crystal oscillators for use in applications
such as WiMAX (Worldwide Interoperability for Microwave Access) and PLC (Power Line Communication)
that require high frequency stability in the order of ±30 to ±10ppm. They use a pad layout suitable for flip chip
bonding mounting.
FEATURES
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Realizing frequency stability improvement with
minimal additional process
Temperature compensation range/ operating temperature range: −40°C to +85°C
Frequency adjustment functions built-in
• Frequency-temperature characteristics compensation function
AT-cut crystal, 3rd order harmonic frequencytemperature characteristics compensation, with
independent low-temperature and high-temperature range compensation settings
- Center frequency adjustment function
- Temperature rotation compensation function
- Low-temperature characteristics compensation
- High-temperature characteristics compensation
Rewritable EEPROM built-in
6 pads: same as general clock oscillator ICs
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Operating supply voltage range
• 5041A××: 2.25V to 3.63V
• 5041B×A: 1.60V to 2.25V
Recommended oscillation frequency range:
20MHz to 55MHz (for fundamental oscillation)
Frequency divider built-in:
• Selectable by version: fO, fO/2, fO/4, fO/8, fO/16,
fO/32
• Frequency divider output for 0.625MHz (min)
low frequency output
Standby function
High-impedance in standby mode, oscillator stops
CMOS output
15pF output load
Pad layout for flip chip bonding
Wafer form (WF5041×××)
FREQUENCY CHARACTERISTICS COMPENSATION BEFORE and AFTER ADJUSTMENT
50
40
30
Before compensation
∆f/f [ppm]
20
10
± 10ppm
0
−10
−20
After compensation
−30
−40
−50
−40 −20
0
20
40
Ta [°C]
60
80
100
APPLICATIONS
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3.2mm × 2.5mm, 2.5mm × 2.0mm, 2.0mm × 1.6mm size miniature crystal oscillator modules
WiMAX, WiBro, PLC and applications requiring high-stability clock oscillators
ORDERING INFORMATION
Device
Package
WF5041×××−4
Wafer form
SEIKO NPC CORPORATION—1
5041 series
SERIES CONFIGURATION
Pad layout
Operating
Recommended
supply
oscillation
frequency range*1 voltage range
[V]
[MHz]
for flip chip
bonding
Temperature
adjustment
function gain
setting ratio*2
Output frequency and version name*3
fO
fO/2
fO/4
fO/8
fO/16
fO/32
1
5041A1A
5041A2A
5041A3A
5041A4A
5041A5A
5041A6A
2
5041A1B
5041A2B
5041A3B
5041A4B
5041A5B
5041A6B
(1)
(5041B1A)
(5041B2A)
(5041B3A)
(5041B4A)
(5041B5A)
(5041B6A)
2.25 to 3.63
20 to 55
1.60 to 2.25
*1. The recommended oscillation frequency is a yardstick value derived from the crystal used for NPC characteristics authentication. However, the oscillation frequency range is not guaranteed. Specifically, the characteristics can vary greatly due to crystal characteristics and mounting conditions, so the
oscillation characteristics of components must be carefully evaluated.
*2. Values in parentheses ( ) are provisional only.
*3. Versions in parentheses ( ) are under development.
TEMPERATURE ADJUSTMENT FUNCTION GAIN SETTING RATIO
Temperature adjustment function gain setting ratio of 5041A×A and 5041A×B differs. In the case of temperature adjustment function that rotates temperature characteristics on T0 origin, adjustment sensitivity of
5041A×B is designed twice as higher than that of 5041A×A based on non-compensation temperature deviation
in same register value setting.
Frequency [MHz]
5041A×A
5041A×B
<Gain setting ratio>
5041A×A : 5041A×B
1 : 2
T0
Temperature deviation
at non-compensation
Ta [°C]
VERSION NAME
Device
Package
Version name
WF5041
WF5041×××−4
Wafer form
Form WF: Wafer form
−4
Temperature adjustment function gain setting ratio
Frequency divider function (output frequency)
Operating supply voltage
SEIKO NPC CORPORATION—2
5041 series
PAD LAYOUT
(Unit: µm)
(420,345)
VSS
5
Y INHN
6
(0,0)
1
(−420,−345)
4
Q
3
VDD
2
XT
XTN
X
Chip size: 0.84mm × 0.69mm
Chip thickness: 130µm ± 15µm
Pad size: 80µm × 80µm
Chip base: VSS level
PAD DIMENSIONS
PIN DESCRIPTION
Pad dimensions [µm]
Pad No.
Pin
I/O
Name
Description
X
Y
–225.2
–253.5
225.2
–253.5
1
XT
I
Amplifier input
2
XTN
O
Amplifier output
Crystal connection pins.
Crystal is connected between XT and XTN.
3
VDD
–
(+) supply voltage
–
328.5
–5.0
4
Q
O
Output
Output frequency determined by internal circuit
to one of fO, fO/2, fO/4, fO/8, fO/16, fO/32.
High impedance in standby mode
328.5
223.8
5
VSS
–
(–) ground
–
–328.5
223.8
6
INHN
I
Output state control input
High impedance when LOW (oscillator stops).
Power-saving pull-up resistor built-in.
–328.5
–5.0
XT
XTN
BLOCK DIAGRAM
RV
RV
RF
Regulator *2
VDD
1
N *1
Q
Oscillation
Detection
INHN
Temperature
Compensation
VSS
Control Register
FO, TO, RTG, TLO, TLG,
THO, THG
*1. N = 1, 2, 4, 8, 16, 32 (mask option)
*2. 5041A×× version only
SEIKO NPC CORPORATION—3
5041 series
ABSOLUTE MAXIMUM RATINGS
VSS = 0V unless otherwise noted.
Parameter
Symbol
Conditions
Rating
Unit
Supply voltage range
VDD
Between VDD and VSS
−0.3 to +4.0
V
Program read/write supply voltage
range
VPP
Between INHN and VSS
−0.3 to +16.5
V
Input voltage range*1
VIN
Input pins
−0.3 to VDD + 0.3
V
−0.3 to VDD + 0.3
V
± 20
mA
−65 to +150
°C
100
times
Output voltage range*1
VOUT
Output pins
Output current
IOUT
Q pin
Storage temperature range
TSTG
Wafer form
EEPROM maximum writes
NEW
*1. VDD is a VDD value of recommended operating conditions.
Note. Absolute maximum ratings are the values that must never exceed even for a moment. This product may suffer breakdown if any one of these
parameter ratings is exceeded. Operation and characteristics are guaranteed only when the product is operated at recommended supply voltage
range.
RECOMMENDED OPERATING CONDITIONS
VSS = 0V unless otherwise noted.
Rating*1
Parameter
Supply voltage
Input voltage
Symbol
Max
5041A××
2.25
–
3.63
V
5041B×A
1.60
–
2.25
V
VSS
–
VDD
V
−40
–
+85
°C
5041A××
20
–
55
MHz
5041B×A
(20)
–
(55)
MHz
5041A××
0.625
–
55
MHz
5041B×A
(0.625)
–
(55)
MHz
–
–
15
pF
VIN
Input pins (XT, INHN)
Oscillation frequency*2
fo
Output load capacitance
Typ
Between VDD and VSS
TOPR
Unit
Min
VDD
Operating temperature
Output frequency*2
Conditions
fOUT
Q pin
CLOUT
Q pin
*1. Values in parentheses ( ) are provisional only.
*2. The recommended oscillation frequency is a yardstick value derived from the crystal used for NPC characteristics authentication. However, the oscillation frequency range is not guaranteed. Specifically, the characteristics can vary greatly due to crystal characteristics and mounting conditions, so the
oscillation characteristics of components must be carefully evaluated.
SEIKO NPC CORPORATION—4
5041 series
ELECTRICAL CHARACTERISTICS
DC Characteristics (5041A1× to A6×)
VDD = 2.25V to 3.63V, VSS = 0V, Ta = −40°C to +85°C, CLOUT = 15pF unless otherwise noted.
Rating
Parameter
Symbol
Conditions
5041A1× (fOUT = fo),
Measurement circuit 1, no load,
INHN = HIGH, fo = 48MHz
5041A2× (fOUT = fo/2),
Measurement circuit 1, no load,
INHN = HIGH, fo = 48MHz
Operating-mode current
consumption*1
IDD
5041A3× (fOUT = fo/4),
Measurement circuit 1, no load,
INHN = HIGH, fo = 48MHz
5041A4× (fOUT = fo/8),
Measurement circuit 1, no load,
INHN = HIGH, fo = 48MHz
5041A5× (fOUT = fo/16),
Measurement circuit 1, no load,
INHN = HIGH, fo = 48MHz
5041A6× (fOUT = fo/32),
Measurement circuit 1, no load,
INHN = HIGH, fo = 48MHz
Unit
MIN
TYP
MAX
VDD = 2.5V
–
1.4
2.8
mA
VDD = 3.3V
–
1.7
3.4
mA
VDD = 2.5V
–
1.1
2.2
mA
VDD = 3.3V
–
1.4
2.7
mA
VDD = 2.5V
–
1.0
1.9
mA
VDD = 3.3V
–
1.2
2.4
mA
VDD = 2.5V
–
0.9
1.7
mA
VDD = 3.3V
–
1.0
2.1
mA
VDD = 2.5V
–
0.8
1.7
mA
VDD = 3.3V
–
1.0
2.0
mA
VDD = 2.5V
–
0.8
1.6
mA
VDD = 3.3V
–
1.0
2.0
mA
–
–
10
µA
VDD−0.4
–
–
V
–
–
0.4
V
Q = VDD
–
–
10
µA
Q = VSS
−10
–
–
µA
0.7VDD
–
–
V
–
–
0.3VDD
V
INHN = VSS
0.4
1.5
10
MΩ
INHN = 0.7VDD
50
100
200
kΩ
Standby-mode current
consumption
IST
Measurement circuit 1, INHN = LOW
HIGH-level output voltage
VOH
Q pin, Measurement circuit 3, IOH = −4mA
LOW-level output voltage
VOL
Q pin, Measurement circuit 3, IOL = 4mA
Output leakage current
HIGH-level input current
LOW-level input current
INHN pull-up resistance
IZ
VIH
Measurement circuit 4,
INHN = LOW
INHN pin, Measurement circuit 5
VIL
RPU1
RPU2
Measurement circuit 6
*1. The consumption current IDD (CLOUT) with a load capacitance (CLOUT) connected to the Q pin is given by the following equation, where IDD is the noload consumption current and fOUT is the output frequency.
IDD (CLOUT) [mA] = IDD [mA] + CLOUT [pF] × VDD [V] × fOUT [MHz] × 10–3
SEIKO NPC CORPORATION—5
5041 series
DC Characteristics (5041B1A to B6A)
VDD = 1.60V to 2.25V, VSS = 0V, Ta = −40°C to +85°C, CLOUT = 15pF unless otherwise noted.
Rating
Parameter
Operating-mode current
consumption*1
Symbol
IDD
Conditions
Unit
MIN
TYP
MAX
5041B1A (fOUT = fo), Measurement circuit 1,
no load, INHN = HIGH, fo = 48MHz, VDD = 1.8V
–
1.7
3.4
mA
5041B2A (fOUT = fo/2), Measurement circuit 1,
no load, INHN = HIGH, fo = 48MHz, VDD = 1.8V
–
1.5
3.3
mA
5041B3A (fOUT = fo/4), Measurement circuit 1,
no load, INHN = HIGH, fo = 48MHz, VDD = 1.8V
–
1.4
3.2
mA
5041B4A (fOUT = fo/8), Measurement circuit 1,
no load, INHN = HIGH, fo = 48MHz, VDD = 1.8V
–
1.4
3.1
mA
5041B5A (fOUT = fo/16), Measurement circuit 1,
no load, INHN = HIGH, fo = 48MHz, VDD = 1.8V
–
1.3
3.1
mA
5041B6A (fOUT = fo/32), Measurement circuit 1,
no load, INHN = HIGH, fo = 48MHz, VDD = 1.8V
–
1.3
3.0
mA
–
–
10
µA
VDD−0.4
–
–
V
–
–
0.4
V
Q = VDD
–
–
10
µA
Q = VSS
−10
–
–
µA
0.7VDD
–
–
V
–
–
0.3VDD
V
INHN = VSS
0.4
1.5
10
MΩ
INHN = 0.7VDD
50
100
200
kΩ
Standby-mode current
consumption
IST
Measurement circuit 1, INHN = LOW
HIGH-level output voltage
VOH
Q pin, Measurement circuit 3, IOH = −4mA
LOW-level output voltage
VOL
Q pin, Measurement circuit 3, IOL = 4mA
Output leakage current
HIGH-level input current
LOW-level input current
INHN pull-up resistance
IZ
VIH
Measurement circuit 4,
INHN = LOW
INHN pin, Measurement circuit 5
VIL
RPU1
RPU2
Measurement circuit 6
*1. The consumption current IDD (CLOUT) with a load capacitance (CLOUT) connected to the Q pin is given by the following equation, where IDD is the noload consumption current and fOUT is the output frequency.
IDD (CLOUT) [mA] = IDD [mA] + CLOUT [pF] × VDD [V] × fOUT [MHz] × 10–3
SEIKO NPC CORPORATION—6
5041 series
AC Characteristics
Clock output characteristics (5041A1× to A6×, Q pin)
VDD = 2.25V to 3.63V, VSS = 0V, Ta = −40°C to +85°C, CLOUT = 15pF unless otherwise noted.
Parameter
Symbol
Output rise time
tr
Output fall time
tf
Output duty cycle*1
Output disable delay time
Rating
Conditions
Unit
MIN
TYP
MAX
Measurement circuit 1, 0.1VDD → 0.9VDD
–
–
4.5
ns
Measurement circuit 1, 0.9VDD → 0.1VDD
–
–
4.5
ns
Duty
Measurement circuit 1, threshold voltage 0.5VDD,
Duty = Tw/T × 100
45
50
55
%
tOD
Measurement circuit 2, INHN = HIGH → LOW
–
–
100
ns
*1. This parameter is measured using the NPC’s standard crystal. Note that the values will vary with the crystal characteristics used or mounting
conditions.
Clock output characteristics (5041B1A to B6A, Q pin)
VDD = 1.60V to 2.25V, VSS = 0V, Ta = −40°C to +85°C, CLOUT = 15pF unless otherwise noted.
Parameter
Symbol
Output rise time
tr
Output fall time
tf
Rating*1
Conditions
Unit
MIN
TYP
MAX
Measurement circuit 1, 0.1VDD → 0.9VDD
–
–
5
ns
Measurement circuit 1, 0.9VDD → 0.1VDD
–
–
5
ns
(45)
(50)
(55)
%
–
–
100
ns
Output duty cycle*2
Duty
Measurement circuit 1, threshold voltage 0.5VDD,
Duty = Tw/T × 100
Output disable delay time
tOD
Measurement circuit 2, INHN = HIGH → LOW
*1. Values in parentheses ( ) are provisional only.
*2. This parameter is measured using the NPC’s standard crystal. Note that the values will vary with the crystal characteristics used or mounting
conditions.
0.9VDD
Q
0.9VDD
TW
0.1VDD
DUTY measurement
voltage (0.5VDD)
0.1VDD
DUTY= TW/ T
T
tr
100 (%)
tf
Figure 1. Output switching waveform
INHN
0.5VDD
tr = tf = 2ns
(10% to 90%)
0.5VDD
tOSC*1
tOD
0.1V
0.5VDD
Q
0.1V
Normal output
Hi-Z
Low
Normal output
*1. tOSC is oscillator start-up time. It is interval of time until the oscillation is stabilized and varies with the crystal used.
Please contact us for further details.
Figure 2. Output disable timing chart
SEIKO NPC CORPORATION—7
5041 series
MEASUREMENT CIRCUITS
Measurement Circuit 1
Measurement Circuit 4
Parameters: IDD, IST, Duty, tr, tf
Parameters: IZ
IDD
IST
A
VDD
IDD: Open
DUTY, tr, tf: Short
IST: Open or Short
VDD
XT
VDD
A
Q
or
VSS
Q
Crystal
IZ
INHN VSS
XTN
INHN VSS
CLOUT = 15pF
(Including probe
capacitance)
IDD, DUTY, tr, tf: Open
IST: Short
Note: The AC characteristics are observed using an oscilloscope on
pin Q.
Measurement Circuit 5
Parameters: VIH, VIL
Measurement Circuit 2
Parameters: tOD
VDD
RL1 =1kΩ
VDD
Signal
Generator
INHN VSS
VIH
VIL V
VT1
VT2
Q
0.001µF
XT
INHN VSS
RL2 =1kΩ
50Ω
VDD
or
Measurement Circuit 6
VSS
Parameters: RPU1, RPU2
XT input signal: 1Vp-p, sine wave
Measurement Circuit 3
VDD
Parameters: VOH, VOL
INHN VSS
VDD
50Ω
Signal
Generator
Q
0.001µF
XT
VSS
50Ω
∆V
VIN V
VOH
VS
VS adjusted such that ∆V =
50 × IOH.
VS
VOL
VOH
V
VOL
A IPU
RPU1 =
VDD
IPU
(VIN = 0V)
RPU2 = VDD 0.7V DD (VIN = 0.7V DD)
IPU
0.1µF
VS
∆V
VS adjusted such that ∆V =
50 × IOL.
XT input signal: 1Vp-p, sine wave
SEIKO NPC CORPORATION—8
5041 series
FUNCTIONAL DESCRIPTION
Frequency Adjustment Function
The 5041 series ICs have a built-in oscillator frequency adjustment function. The frequency adjustment settings are written to and stored in internal EEPROM, making the devices easy to setup. A typical compensation
sequence is shown below.
50
40
30
50
40
Before adjustment
30
∆f/f [ppm]
∆f/f [ppm]
10
0
−10
−20
Before compensation
20
10
20
0
−10
−20
−30
−30
After adjustment
−40
−50
−40 −20
0
20
40
60
After compensation
−40
−50
−40 −20
0
20
40
80 100
Ta [°C]
Figure 3. Center frequency adjustment
After compensation
∆f/f [ppm]
∆f/f [ppm]
50
40
30
0
−10
0
−10
−20
−30
−30
Before compensation
0
20
40
60
80 100
Ta [°C]
Figure 5. Low-temperature characteristics
compensation
Before compensation
20
10
−20
−40
−50
−40 −20
80 100
Figure 4. Temperature rotation compensation
50
40
30
20
10
60
Ta [°C]
−40
−50
−40 −20
After compensation
0
20
40
60
80 100
Ta [°C]
Figure 6. High-temperature characteristics
compensation
SEIKO NPC CORPORATION—9
5041 series
Power-saving Pull-up Resistor
The INHN pin pull-up resistance RPU1 or RPU2 changes in response to the input level (open, HIGH, or LOW).
When INHN is tied LOW level, the pull-up resistance is large (RPU1), reducing the current consumed by the
resistance. When INHN is left open circuit (HIGH), the pull-up resistance is small (RPU2), which increases the
input susceptibility to external noise. However, the pull-up resistance ties the INHN pin HIGH level to prevent
external noise from unexpectedly stopping the output.
Oscillation Detector Function
The 5041 series also feature an oscillation detector circuit. This circuit functions to disable the outputs until the
oscillator circuit starts and oscillation becomes stable. This alleviates the danger of abnormal oscillator output
at oscillator start-up when power is applied or when INHN is switched.
SEIKO NPC CORPORATION—10
5041 series
Please pay your attention to the following points at time of using the products shown in this document.
1. The products shown in this catalog (hereinafter “Products”) are not designed and manufactured to be used for the apparatus that
exerts harmful influence on the human lives due to the defects, failure or malfunction of the Products. If you wish to use the Products
in that apparatus, please contact our sales section in advance.
In the event that the Products are used in such apparatus without our prior approval, we assume no responsibility whatsoever for any
damages resulting from the use of that apparatus.
2. NPC reserves the right to change the specifications of the Products in order to improve the characteristics or reliability thereof.
3. The information described in this catalog is presented only as a guide for using the Products. No responsibility is assumed by us for
any infringements of patents or other rights of the third parties which may result from its use. No license is granted by implication or
otherwise under any patents or other rights of the third parties. Then, we assume no responsibility whatsoever for any damages
resulting from that infringements.
4. The constant of each circuit shown in this catalog is described as an example, and it is not guaranteed about its value of the massproduction products.
5. In the case of that the Products in this catalog falls under the foreign exchange and foreign trade control law or other applicable laws
and regulations, approval of the export to be based on those laws and regulations are necessary. Customers are requested
appropriately take steps to obtain required permissions or approvals form appropriate government agencies.
SEIKO NPC CORPORATION
15-6, Nihombashi-kabutocho, Chuo-ku,
Tokyo 103-0026, Japan
Telephone: +81-3-6667-6601
Facsimile: +81-3-6667-6611
http://www.npc.co.jp/
Email: [email protected]
NC0904AE
2009.10
SEIKO NPC CORPORATION—11