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CF5018 series 2.5V 3rd Overtone Crystal Oscillator Module ICs
OVERVIEW
The CF5018 series are crystal oscillator ICs that operate from 2.5V. Devices are available that provide 3rd overtone oscillation in the range 30MHz to 80MHz. They are optimized for 2.5V operation, resulting in stable oscillator startup characteristics and output duty stability. They feature a large reduction in chip surface area compared to existing devices, making possible the construction of small-sized crystal oscillator.
FEATURES
I I
I I I I
I
2.25 to 2.75V operating supply voltage range 30MHz to 80MHz oscillation frequency range (varies with version) - 40 to 85C operating temperature range Oscillation capacitors CG, CD built-in Inverter amplifier feedback resistor built-in Standby function * High impedance in standby mode, oscillator stops Low standby current * Power-saving pull-up resistor built-in
I I I I I I I
fO output frequency (oscillation frequency) 8mA output drive capability (VDD = 2.25V) CMOS output duty level (1/2VDD) 50 5% output duty (at 1/2VDD) 30pF output load Molybdenum-gate CMOS process Chip form (CF5018ALx)
SERIES CONFIGURATION
Version CF5018ALA CF5018ALB CF5018ALC CF5018ALD CF5018ALE 2.25 to 2.75 Operating supply voltage range [V] Recommended operating frequency range1 [MHz] 30 to 36 36 to 40 40 to 50 50 to 60 60 to 80 Built-in capacitance [pF] gm ratio CG 0.25 0.50 15 0.75 1.00 1.50 10 8 3.5 3.0 3.5 CD Rf [k] 4.7 3.5
1. The recommended operating frequency is a yardstick value derived from the crystal used for NPC characteristics authentication. However, the oscillator frequency band 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.
ORDERING INFORMATION
Device CF5018ALx-2 Package Chip form
SEIKO NPC CORPORATION --1
CF5018 series
PAD LAYOUT
(Unit: m) (720,730) VDD
HA5018 NPC
Q VSS
Y
INHN
(0,0)
XT X
XTN
Chip size: 0.72 x 0.73mm Chip thickness: 220 30m PAD size: 90m Chip base: VDD level
PIN DESCRIPTION and PAD DIMENSIONS
Pad dimensions [m] Name I/O Description X INHN XT XTN VSS Q VDD I I O - O - Output state control input. High impedance when LOW (oscillator stops). Power-saving pull-up resistor built-in. Amplifier input Amplifier output Ground Output. Output frequency. High impedance in standby mode Supply voltage Crystal connection pins. Crystal is connected between XT and XTN. 151 238 503 588 588 131 Y 277 131 131 345 598 598
BLOCK DIAGRAM
VDD VSS XTN
CG Rf1 Cf CD
XT
Rf2
Q
INHN
INHN = LOW active
SEIKO NPC CORPORATION --2
CF5018 series
SPECIFICATIONS
Absolute Maximum Ratings
VSS = 0V
Parameter Supply voltage range Input voltage range Output voltage range Operating temperature range Storage temperature range Output current Symbol VDD VIN VOUT Topr TSTG IOUT Condition Rating -0.5 to +7.0 -0.5 to VDD + 0.5 -0.5 to VDD + 0.5 -40 to +85 -65 to +150 20 Unit V V V C C mA
Recommended Operating Conditions
VSS = 0V, f 80MHz, CL 30pF
Parameter Supply voltage range Input voltage range Operating temperature range Symbol VDD VIN TOPR Condition Rating 2.25 to 2.75 VSS to VDD -40 to +85 Unit V V C
SEIKO NPC CORPORATION --3
CF5018 series
Electrical Characteristics
VDD = 2.25 to 2.75V, VSS = 0V, Ta = -40 to +85C unless otherwise noted.
Rating Parameter HIGH-level output voltage LOW-level output voltage HIGH-level input voltage LOW-level input voltage Output leakage current Symbol VOH VOL VIH VIL IZ Condition min Q: Measurement cct 1, VDD = 2.25V, IOH = 8mA Q: Measurement cct 2, VDD = 2.25V, IOL = 8mA INHN INHN Q: Measurement cct 2, INHN = LOW VOH = VDD VOL = VSS CF5018ALA f = 30MHz CF5018ALB f = 40MHz Current consumption IDD Measurement cct 3, load cct 1, INHN = open, CL = 30pF CF5018ALC f = 50MHz CF5018ALD f = 60MHz CF5018ALE f = 80MHz Standby current INHN pull-up resistance IST RUP1 RUP2 CF5018ALA CF5018ALB AC feedback resistance Rf1 Design value. A monitor pattern on a wafer is tested. CF5018ALC CF5018ALD CF5018ALE DC feedback resistance AC feedback capacitance Rf2 Cf CG Measurement cct 5 Design value. A monitor pattern on a wafer is tested. Design value. A monitor pattern on a wafer is tested. CF5018ALA CF5018ALB CF5018ALC CF5018ALD CF5018ALE Measurement cct 3, INHN = LOW Measurement cct 4 20 3.99 2.97 2.97 2.55 2.97 50 8.5 6.8 100 4.7 3.5 3.5 3.0 3.5 - 10 8 200 5.41 4.03 4.03 3.45 4.03 150 11.5 9.2 1.65 - 0.7VDD - - - - - - - - - 2 typ 1.95 0.3 - - - - 6 8 10 11 15 - 6 max - 0.4 - 0.3VDD 10 10 12 16 20 22 30 3 12 V V V V A A mA mA mA mA mA A M k k k k k k k pF pF Unit
Built-in capacitance CD
Design value. A monitor pattern on a wafer is tested.
12.7
15
17.3
pF
8.5
10
11.5
pF
SEIKO NPC CORPORATION --4
CF5018 series
Switching Characteristics
VDD = 2.25 to 2.75V, VSS = 0V, Ta = -40 to +85C unless otherwise noted.
Rating Parameter Output rise time Output fall time Output duty cycle1 Output disable delay time2 Output enable delay time2 Symbol tr tf Duty tPLZ tPZL Condition min Measurement cct 3, load cct 1, 0.1VDD to 0.9VDD , CL = 30pF Measurement cct 3, load cct 1, 0.9VDD to 0.1VDD , CL = 30pF Measurement cct 3, load cct 1, VDD = 2.5V, Ta = 25C, f = 80MHz , CL = 30pF Measurement cct 6, load cct 1, VDD = 2.5V, Ta = 25C, CL = 15pF - - 45 - - typ 3 3 - - - max 6 6 55 100 100 ns ns % ns ns Unit
1. The duty cycle characteristic is checked the sample chips of each production lot. 2. Oscillator stop function is built-in. When INHN goes LOW, normal output stops. When INHN goes HIGH, normal output is not resumed until after the oscillator start-up time has elapsed.
Current consumption and Output waveform with NPC's standard crystal
Cb
f [MHz] 30 40 50 60 70 85
R [] 18.62 20.53 22.17 15.37 25.42 20.58
L [mH] 16.24 11.34 7.40 3.83 4.18 5.22
Ca [fF] 1.733 1.396 1.370 1.836 1.254 0.671
Cb [pF] 5.337 3.989 4.105 5.191 5.170 4.965
L
Ca
R
FUNCTIONAL DESCRIPTION
Standby Function
When INHN goes LOW, the oscillator stops and the oscillator output on Q becomes high impedance.
INHN HIGH (or open) LOW Q fO output frequency High impedance Oscillator Normal operation Stopped
Power-saving Pull-up Resistor
The INHN pull-up resistance changes in response to the input level (HIGH or LOW). When INHN goes LOW (standby state), the pull-up resistance becomes large to reduce the current consumption during standby.
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CF5018 series
MEASUREMENT CIRCUITS
Measurement cct 1 Measurement cct 4
Signal Generator
C1 XT R1 XTN INHN
VDD Q VSS R2
XT XTN INHN
VDD Q VSS RUP1 = VDD IPR (VPR = VSS)
V
VPR
VDD VOH 0V
RUP2 = VDD VPR IPR (VPR = 0.7VDD)
IPR
Q output
A
2Vp-p, 10MHz sine wave input signal C1: 0.001F R1: 50 R2: 206
Measurement cct 5
Measurement cct 2
VDD Q Rf = VDD IRf
IZ, IOL XT XTN INHN VDD Q VSS IZ
XT
A V
VOH VOL
XTN INHN
VSS
A
IRf
Measurement cct 6 Measurement cct 3
Signal Generator
C1 XT R1 XTN INHN VDD Q VSS
A
XT X'tal XTN INHN VDD
IDD IST
Q VSS
2Vp-p, 10MHz sine wave input signal C1: 0.001F R1: 50
Load cct 1
Q output CL
(Including probe capacitance)
SEIKO NPC CORPORATION --6
CF5018 series
Switching Time Measurement Waveform
Output duty level, tr, tf
Q output
0.9VDD 0.1VDD TW
0.9VDD 0.1VDD
DUTY measurement voltage (0.5V DD)
tr
Output duty cycle
tf
Q output
TW T
DUTY measurement voltage (0.5VDD) DUTY= TW/ T 100 (%)
Output Enable/Disable Delay
when the device is in standby, the oscillator stops. When standby is released, the oscillator starts and stable oscillator output occurs after a short delay.
INHN
VIL
VIH
tPLZ Q output
INHN input waveform
tPZL
tr = tf
10ns
SEIKO NPC CORPORATION --7
CF5018 series
Please pay your attention to the following points at time of using the products shown in this document. The products shown in this document (hereinafter "Products") are not intended to be used for the apparatus that exerts harmful influence on human lives due to the defects, failure or malfunction of the Products. Customers are requested to obtain prior written agreement for such use from SEIKO NPC CORPORATION (hereinafter "NPC"). Customers shall be solely responsible for, and indemnify and hold NPC free and harmless from, any and all claims, damages, losses, expenses or lawsuits, due to such use without such agreement. NPC reserves the right to change the specifications of the Products in order to improve the characteristic or reliability thereof. NPC makes no claim or warranty that the contents described in this document dose not infringe any intellectual property right or other similar right owned by third parties. Therefore, NPC shall not be responsible for such problems, even if the use is in accordance with the descriptions provided in this document. Any descriptions including applications, circuits, and the parameters of the Products in this document are for reference to use the Products, and shall not be guaranteed free from defect, inapplicability to the design for the mass-production products without further testing or modification. Customers are requested not to export or re-export, directly or indirectly, the Products to any country or any entity not in compliance with or in violation of the national export administration laws, treaties, orders and regulations. Customers are requested appropriately take steps to obtain required permissions or approvals from 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
NC0215BE 2006.04
SEIKO NPC CORPORATION --8

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