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5042 series
High-stability Crystal Oscillator IC with Frequency Adjustment Function
OVERVIEW
The 5042 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 wire bonding mounting.
FEATURES
I I I
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Realizing frequency stability improvement with minimal additional process Temperature compensation range/ operating temperature range: -40C to +85C 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 * 5042AxA: 2.25V to 3.63V * 5042BxA: 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 wire bonding Chip form (CF5042xxA)
FREQUENCY CHARACTERISTICS COMPENSATION BEFORE and AFTER ADJUSTMENT
50 40 30 20 f/f [ppm] 10 0 -10 -20 -30 -40 -50 -40 -20 0 20 40 Ta [C] 60 80 100 After compensation 10ppm Before compensation
APPLICATIONS
I I
3.2mm x 2.5mm, 2.5mm x 2.0mm size miniature crystal oscillator modules WiMAX, WiBro, PLC and applications requiring high-stability clock oscillators
ORDERING INFORMATION
Device CF5042xxA-4 Package Chip form SEIKO NPC CORPORATION--1
5042 series
SERIES CONFIGURATION
Recommended Operating supply oscillation voltage range frequency range*1 [V] [MHz] 2.25 to 3.63 for wire bonding 20 to 55 1.60 to 2.25 (5042B1A) (5042B2A) (5042B3A) (5042B4A) (5042B5A) (5042B6A) Output frequency and version name*2 fO 5042A1A fO/2 5042A2A fO/4 5042A3A fO/8 5042A4A fO/16 5042A5A fO/32 5042A6A
Pad layout
*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. Versions in parentheses ( ) are under development.
VERSION NAME
Device Package Version name
CF5042
CF5042xxA-4 Chip form
Form CF: Chip (Die) form
A-4
Frequency divider function (output frequency) Operating supply voltage
SEIKO NPC CORPORATION--2
5042 series
PAD LAYOUT
(Unit: m)
(420,345) Q Y VDD 5 6 1 (-420,-345) XTN X (0,0) 2 XT 4 3 VSS INHN
Chip size: 0.84mm x 0.69mm Chip thickness: 130m 15m Pad size: 80m x 80m Chip base: VSS level
PAD DIMENSIONS
Pad No. 1 2 3 4 5 6 Pin XTN XT INHN VSS Q VDD I/O O I I - O -
PIN DESCRIPTION
Pad dimensions [m] Name Amplifier output Amplifier input Output state control input (-) ground Output (+) supply voltage Description X Crystal connection pins. Crystal is connected between XT and XTN. High impedance when LOW (oscillator stops). Power-saving pull-up resistor built-in. - 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 - -225.2 225.2 328.5 328.5 -328.5 -328.5 Y -253.5 -253.5 -5.0 223.8 223.8 -5.0
BLOCK DIAGRAM
XT
RV RF RV Regulator *2 1 N *1 Oscillation Detection
XTN
VDD Q
INHN
Temperature Compensation
VSS
Control Register FO, TO, RTG, TLO, TLG, THO, THG
*1. N = 1, 2, 4, 8, 16, 32 (mask option) *2. 5042AxA version only
SEIKO NPC CORPORATION--3
5042 series
ABSOLUTE MAXIMUM RATINGS
VSS = 0V unless otherwise noted.
Parameter Supply voltage range Program read/write supply voltage range Input voltage range*1 Output voltage range*1 Output current Storage temperature range EEPROM maximum writes Symbol VDD VPP VIN VOUT IOUT TSTG NEW Conditions Between VDD and VSS Between INHN and VSS Input pins Output pins Q pin Chip form Rating -0.3 to +4.0 -0.3 to +16.5 -0.3 to VDD + 0.3 -0.3 to VDD + 0.3 20 -65 to +150 100 Unit V V V V mA C times
*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 Symbol Conditions Min Supply voltage Input voltage Operating temperature Oscillation frequency*2 VDD VIN TOPR fo 5042AxA 5042BxA Q pin Q pin 5042AxA 5042BxA Between VDD and VSS Input pins (XT, INHN) 5042AxA 5042BxA 2.25 1.60 VSS -40 20 (20) 0.625 (0.625) - Typ - - - - - - - - - Max 3.63 2.25 VDD +85 55 (55) 55 (55) 15 V V V C MHz MHz MHz MHz pF Unit
Output frequency*2 Output load capacitance
fOUT CLOUT
*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
5042 series
ELECTRICAL CHARACTERISTICS
DC Characteristics (5042A1A to A6A)
VDD = 2.25V to 3.63V, VSS = 0V, Ta = -40C to +85C, CLOUT = 15pF unless otherwise noted.
Rating Parameter Symbol Conditions MIN 5042A1A (fOUT = fo), Measurement circuit 1, no load, INHN = HIGH, fo = 48MHz 5042A2A (fOUT = fo/2), Measurement circuit 1, no load, INHN = HIGH, fo = 48MHz 5042A3A (fOUT = fo/4), Measurement circuit 1, no load, INHN = HIGH, fo = 48MHz 5042A4A (fOUT = fo/8), Measurement circuit 1, no load, INHN = HIGH, fo = 48MHz 5042A5A (fOUT = fo/16), Measurement circuit 1, no load, INHN = HIGH, fo = 48MHz 5042A6A (fOUT = fo/32), Measurement circuit 1, no load, INHN = HIGH, fo = 48MHz Standby-mode current consumption HIGH-level output voltage LOW-level output voltage Output leakage current HIGH-level input current LOW-level input current INHN pull-up resistance IST VOH VOL IZ VIH VIL RPU1 RPU2 Measurement circuit 6 INHN = VSS INHN = 0.7VDD VDD = 2.5V VDD = 3.3V VDD = 2.5V VDD = 3.3V VDD = 2.5V VDD = 3.3V VDD = 2.5V VDD = 3.3V VDD = 2.5V VDD = 3.3V VDD = 2.5V VDD = 3.3V - - - - - - - - - - - - - VDD-0.4 - - -10 0.7VDD - 0.4 50 TYP 1.4 1.7 1.1 1.4 1.0 1.2 0.9 1.0 0.8 1.0 0.8 1.0 - - - - - - - 1.5 100 MAX 2.8 3.4 2.2 2.7 1.9 2.4 1.7 2.1 1.7 2.0 1.6 2.0 10 - 0.4 10 - - 0.3VDD 10 200 mA mA mA mA mA mA mA mA mA mA mA mA A V V A A V V M k Unit
Operating-mode current consumption*1
IDD
Measurement circuit 1, INHN = LOW Q pin, Measurement circuit 3, IOH = -4mA Q pin, Measurement circuit 3, IOL = 4mA Measurement circuit 4, INHN = LOW INHN pin, Measurement circuit 5 Q = VDD Q = VSS
*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] x VDD [V] x fOUT [MHz] x 10-3
SEIKO NPC CORPORATION--5
5042 series
DC Characteristics (5042B1A to B6A)
VDD = 1.60V to 2.25V, VSS = 0V, Ta = -40C to +85C, CLOUT = 15pF unless otherwise noted.
Rating Parameter Symbol Conditions MIN 5042B1A (fOUT = fo), Measurement circuit 1, no load, INHN = HIGH, fo = 48MHz, VDD = 1.8V 5042B2A (fOUT = fo/2), Measurement circuit 1, no load, INHN = HIGH, fo = 48MHz, VDD = 1.8V Operating-mode current consumption*1 5042B3A (fOUT = fo/4), Measurement circuit 1, no load, INHN = HIGH, fo = 48MHz, VDD = 1.8V 5042B4A (fOUT = fo/8), Measurement circuit 1, no load, INHN = HIGH, fo = 48MHz, VDD = 1.8V 5042B5A (fOUT = fo/16), Measurement circuit 1, no load, INHN = HIGH, fo = 48MHz, VDD = 1.8V 5042B6A (fOUT = fo/32), Measurement circuit 1, no load, INHN = HIGH, fo = 48MHz, VDD = 1.8V Standby-mode current consumption HIGH-level output voltage LOW-level output voltage Output leakage current HIGH-level input current LOW-level input current INHN pull-up resistance IST VOH VOL IZ VIH VIL RPU1 RPU2 Measurement circuit 6 INHN = VSS INHN = 0.7VDD Measurement circuit 1, INHN = LOW Q pin, Measurement circuit 3, IOH = -4mA Q pin, Measurement circuit 3, IOL = 4mA Measurement circuit 4, INHN = LOW INHN pin, Measurement circuit 5 Q = VDD Q = VSS - - - - - - - VDD-0.4 - - -10 0.7VDD - 0.4 50 TYP 1.7 1.5 1.4 1.4 1.3 1.3 - - - - - - - 1.5 100 MAX 3.4 3.3 3.2 3.1 3.1 3.0 10 - 0.4 10 - - 0.3VDD 10 200 mA mA mA mA mA mA A V V A A V V M k Unit
IDD
*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] x VDD [V] x fOUT [MHz] x 10-3
SEIKO NPC CORPORATION--6
5042 series AC Characteristics
Clock output characteristics (5042A1A to A6A, Q pin)
VDD = 2.25V to 3.63V, VSS = 0V, Ta = -40C to +85C, CLOUT = 15pF unless otherwise noted.
Parameter Output rise time Output fall time Output duty cycle*1 Output disable delay time Symbol tr tf Duty tOD Conditions Measurement circuit 1, 0.1VDD 0.9VDD Measurement circuit 1, 0.9VDD 0.1VDD Measurement circuit 1, threshold voltage 0.5VDD, Duty = Tw/T x 100 Measurement circuit 2, INHN = HIGH LOW Rating MIN - - 45 - TYP - - 50 - MAX 4.5 4.5 55 100 Unit ns ns % 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 (5042B1A to B6A, Q pin)
VDD = 1.60V to 2.25V, VSS = 0V, Ta = -40C to +85C, CLOUT = 15pF unless otherwise noted.
Parameter Output rise time Output fall time Output duty cycle*2 Output disable delay time Symbol tr tf Duty tOD Conditions Measurement circuit 1, 0.1VDD 0.9VDD Measurement circuit 1, 0.9VDD 0.1VDD Measurement circuit 1, threshold voltage 0.5VDD, Duty = Tw/T x 100 Measurement circuit 2, INHN = HIGH LOW Rating*1 MIN - - (45) - TYP - - (50) - MAX 5 5 (55) 100 Unit ns ns % ns
*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
0.9VDD
Q
0.1VDD
TW T
0.1VDD
DUTY measurement voltage (0.5VDD) DUTY= TW/ T 100 (%)
tr
tf
Figure 1. Output switching waveform
INHN
0.5VDD
0.5VDD
tr = tf = 2ns
(10% to 90%)
tOD
0.1V
tOSC*1
0.5VDD 0.1V
Q
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
5042 series
MEASUREMENT CIRCUITS
Measurement Circuit 1
Parameters: IDD, IST, Duty, tr, tf
IDD IST IDD: Open DUTY, tr, tf: Short IST: Open or Short Q XTN INHN VSS IDD, DUTY, tr, tf: Open IST: Short CLOUT = 15pF (Including probe capacitance) INHN VSS IZ
Measurement Circuit 4
Parameters: IZ
A
VDD XT Crystal
VDD VDD Q
A
or
VSS
Note: The AC characteristics are observed using an oscilloscope on pin Q.
Measurement Circuit 5
Parameters: VIH, VIL
Measurement Circuit 2
Parameters: tOD
VDD
VDD 0.001F XT INHN VSS 50 VDD
or
RL1 =1k Q RL2 =1k VIH VIL V VT1 VT2
INHN VSS
Signal Generator
VSS
Measurement Circuit 6
Parameters: RPU1, RPU2
XT input signal: 1Vp-p, sine wave
Measurement Circuit 3
Parameters: VOH, VOL
VDD
INHN VSS
VDD 50
VIN V
A IPU
RPU1 =
VDD IPU
(VIN = 0V)
Signal Generator
0.001F XT VSS 50
Q VOH V VOL 0.1F VS
RPU2 = VDD 0.7VDD (VIN = 0.7VDD) IPU
V
VOH VS
VS VOL
V
VS adjusted such that V = 50 x IOH. XT input signal: 1Vp-p, sine wave
VS adjusted such that V = 50 x IOL.
SEIKO NPC CORPORATION--8
5042 series
FUNCTIONAL DESCRIPTION
Frequency Adjustment Function
The 5042 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 20
Before adjustment
50 40 30 Before compensation 20 10 0 -10 -20 -30 After compensation -40 -50 -40 -20 0 20 40 Ta [C]
f/f [ppm]
10 0 -10 -20 -30 After adjustment -40 -50 -40 -20 0 20 40 Ta [C]
60
80 100
f/f [ppm]
60
80 100
Figure 3. Center frequency adjustment
Figure 4. Temperature rotation compensation
50 40 30
50 40 30 After compensation
Before compensation
f/f [ppm]
0 -10 -20 -30 -40 -50 -40 -20 Before compensation 0 20 40 60 80 100
f/f [ppm]
20 10
20 10 0 -10 -20 -30 -40 -50 -40 -20 After compensation
0
20
40
60
80 100
Ta [C]
Ta [C]
Figure 5. Low-temperature characteristics compensation
Figure 6. High-temperature characteristics compensation
SEIKO NPC CORPORATION--9
5042 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 5042 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
5042 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: sales@npc.co.jp
NC0905AE 2009.10
SEIKO NPC CORPORATION--11

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