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CF5037 series
2.5V LVDS Output Oscillator ICs
OVERVIEW
The CF5037 series are 2.5V operation, LVDS output oscillator ICs. They support 80MHz to 250MHz 3rd overtone oscillation and 80MHz to 700MHz fundamental oscillation. The CF5037 series can be used to construct high-frequency LVDS output oscillators.
FEATURES
I I
I I
2.375 to 3.6V operating supply voltage range Operating frequency range (varies with version) * 80MHz to 700MHz fundamental oscillation * 80MHz to 250MHz 3rd overtone oscillation - 40 to 85C operating temperature range LVDS output
I
I I I
Standby function * Outputs are high impedance when OE is LOW. (oscillator stops) Power-saving pull-up resistor built-in (pin OE) BiCMOS process Chip form (CF5037xx)
SERIES CONFIGURATION
Version CF5037A1 CF5037B1 CF5037B2*2 CF5037C1 CF5037C2 CF5037D1 (CF5037D2) (CF5037E1) (CF5037E2) (CF5037F1) (CF5037F2) (CF5037V1) (CF5037V2) Oscillator constants determined by external components (Rf, CXIN, CXOUT) Fundamental Fundamental or 3rd overtone Oscillation mode Recommended operating frequency range*1 [MHz] 80 to 120 100 to 180 Output frequency fO fO fO/2 fO fO/2 fO fO/2 fO fO/2 fO fO/2 fO 80 to 400 fO/2
150 to 250
250 to 400
400 to 600
600 to 700
*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. *2. Minimum output frequency: 80MHz Note. These versions in parentheses ( ) are under development. Please ask our Sales & Marketing section for further detail.
ORDERING INFORMATION
Device CF5037xx-1 Package Chip form
SEIKO NPC CORPORATION --1
CF5037 series
PAD LAYOUT
(Unit: m)
OUT OUTN VCC2 OE
8 7 6 5
(1100,1300)
Y
TEST
9
DB5037 1 2 3 4
(0,0) VCC
XIN XOUT GND X
Chip size: 1.10 x 1.30mm Chip thickness: 300 30m PAD size: 150m x 100m (VCC, OUT, OUTN pins) 100m x 100m (excluding VCC, OUT, OUTN pins) Chip base: GND potential Note: The TEST pin is not used during normal operation.
PIN DESCRIPTION and PAD DIMENSIONS
Pad dimensions [m] Pad No. 1 2 3 4 5 6 7 8 9 Name VCC XIN XOUT GND OE VCC2 OUTN OUT TEST I/O - I O - I - O O I (+) supply pin Oscillator input pin Oscillator output pin (-) ground pin Output enable pin. Outputs are high impedance when LOW (oscillator stopped). Power-saving pull-up resistor built-in. (+) output buffer supply pin Output pin (complementary) Output pin (true) IC test pin. Leave open circuit for normal operation. Function X 160 511 740 965 896 756 523 244 136 Y 130 130 130 130 1170 1170 1170 1170 678
SEIKO NPC CORPORATION --2
CF5037 series
BLOCK DIAGRAM
VCC XIN
Colpitts OSC 1/2 LVDS
VCC2
OUT OUTN
XOUT
OE
GND
OSCILLATOR CIRCUIT CONSTANT
The CF5037 series oscillator setting varies with device version to optimize characteristics over the recommended operating frequency range.
Version CF5037A1 CF5037Bx CF5037Cx CF5037Dx CF5037Ex CF5037Fx Fundamental Oscillation mode Fundamental or 3rd overtone Built-in capacitance*1 *2[pF] CXIN 12 8 6 5 (5) (4) CXOUT 12 8 6 5 (5) (4) Recommended operating frequency range*2 *3 [MHz] 80 to 120 100 to 180 150 to 250 250 to 400 (400 to 600) (600 to 700)
*1. The oscillator internal capacitance values includes parasitic capacitance. *2. Values in parentheses ( ) are provisional only. *3. 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.
Oscillator Equivalent Circuit
C0 cancel
CXIN
XIN
RPD1
Rf
CXOUT
XOUT
Oscillator block equivalent circuit
The CF5037 series oscillator circuit has a C0 cancel circuit built-in to improve the oscillator margin. If power is applied when there is an open circuit between XIN and XOUT, self oscillation may occur, which is not abnormal. Users should confirm that the oscillator operates normally when a crystal unit is connected.
SEIKO NPC CORPORATION --3
CF5037 series
SPECIFICATIONS
Absolute Maximum Ratings
Parameter Supply voltage range Input voltage range Output voltage range Storage temperature range Symbol VCC VIN VOUT TSTG Chip form Conditions Rating -0.5 to +5.0 GND - 0.5 to VCC + 0.5 GND - 0.5 to VCC + 0.5 -65 to +150 Unit V V V C
Recommended Operating Conditions
Rating Parameter Operating supply voltage Input voltage Operating temperature Output load Output frequency Symbol VCC VIN TOPR RL fOUT Between OUT and OUTN Conditions Min 2.375 GND -40 99 80 Typ - - +25 100 - Max 3.6 VCC +85 101 700 V V C MHz Unit
SEIKO NPC CORPORATION --4
CF5037 series
Electrical Characteristics
3.3V operation VCC = 3.0 to 3.6V, GND = 0V, Ta = -40 to +85C unless otherwise noted.
Rating*1 Parameter Symbol Conditions Min Current consumption 1 Current consumption 2 HIGH-level output voltage LOW-level output voltage Differential output voltage Differential output error Offset voltage Offset error Output leakage current HIGH-level input voltage LOW-level input voltage LOW-level input current 1 LOW-level input current 2 Pull-down resistance 1 IEE1 IEE2 VOH VOL VOD VOD VOS VOS IZ VIH VIL IIL1 IIL2 RPD1 Measurement cct. 1, OE = open 5037A1, Bx, Cx, Dx 5037Ex, Fx - - - - 0.9 247 - 1.125 - - 0.7VCC - -2 -20 12 Typ 45 (53) - 1.43 1.1 330 - 1.25 - - - - - - 24 Max 66 (73) 30 1.6 - 454 50 1.375 50 10 - 0.3VCC -20 -200 48 mA mA A V V mV mV V mV A V V A A k Unit
Measurement cct. 1, OE = LOW Measurement cct. 1, OE = open, RL = 100, OUT, OUTN pins, f = 100MHz Measurement cct. 1, OE = open, RL = 100, OUT-OUTN differential voltage, f = 100MHz Measurement cct. 1, OE = open, RL = 100, OUT-OUTN mid-level potential, f = 100MHz Measurement cct. 2, OE = LOW, OUT, OUTN pins Measurement cct. 1, OE pin Measurement cct. 1, OE pin Measurement cct. 1, VIL = 0V, OE pin Measurement cct. 1, VIL = 0.7VCC, OE pin Measurement cct. 2, XIN pin
*1. Values in parentheses ( ) are provisional only.
2.5V operation VCC = 2.375 to 2.625V, GND = 0V, Ta = -40 to +85C unless otherwise noted.
Rating*1 Parameter Symbol Conditions Min Current consumption 1 Current consumption 2 HIGH-level output voltage LOW-level output voltage Differential output voltage Differential output error Offset voltage Offset error Output leakage current HIGH-level input voltage LOW-level input voltage LOW-level input current 1 LOW-level input current 2 Pull-down resistance 1 IEE1 IEE2 VOH VOL VOD VOD VOS VOS IZ VIH VIL IIL1 IIL2 RPD1 Measurement cct. 1, OE = open 5037A1, Bx, Cx, Dx 5037Ex, Fx - - - - 0.9 247 - 1.125 - - 0.7VCC - -2 -10 12 Typ 43 (51) - 1.43 1.1 330 - 1.25 - - - - - - 24 Max 63 (70) 30 1.6 - 454 50 1.375 50 10 - 0.3VCC -20 -150 48 mA mA A V V mV mV V mV A V V A A k Unit
Measurement cct. 1, OE = LOW Measurement cct. 1, OE = open, RL = 100, OUT, OUTN pins, f = 100MHz Measurement cct. 1, OE = open, RL = 100, OUT-OUTN differential voltage, f = 100MHz Measurement cct. 1, OE = open, RL = 100, OUT-OUTN mid-level potential, f = 100MHz Measurement cct. 2, OE = LOW, OUT, OUTN pins Measurement cct. 1, OE pin Measurement cct. 1, OE pin Measurement cct. 1, VIL = 0V, OE pin Measurement cct. 1, VIL = 0.7VCC, OE pin Measurement cct. 2, XIN pin
*1. Values in parentheses ( ) are provisional only.
SEIKO NPC CORPORATION --5
CF5037 series
Switching Characteristics
3.3V operation VCC = 3.0 to 3.6V, GND = 0V, Ta = -40 to +85C unless otherwise noted.
Rating*1 Parameter Symbol Conditions Min Output duty cycle Duty Measurement cct. 3, measured at 0V differential output (crossing point), Ta = 25C, VCC = 3.3V f < 350MHz f 350MHz 5037A1: f = 120MHz 5037Bx: f = 180MHz Output swing*2 VOpp Measurement cct. 3, Ta = TOPR, differential output waveform peakto-peak 5037Cx: f = 250MHz 5037Dx: f = 400MHz 5037Ex: f = 600MHz 5037Fx: f = 700MHz Output rise time Output fall time Output enable time*3 Output disable time tr tf tOE tOD Measurement cct. 3, 20 to 80% differential output swing Measurement cct. 3, 80 to 20% differential output swing Measurement cct. 1, Ta = 25C Measurement cct. 1, Ta = 25C 45 40 0.35 0.35 0.35 0.35 (0.35) (0.35) - - - - Typ - - - - - - - - 0.3 0.3 - - Max 55 60 - - - - - - 0.7 0.7 2 200 % % V V V V V V ns ns ms ns Unit
*1. Values in parentheses ( ) are provisional only. *2. The said values are measured by using the NPC standard jig. *3. The built-in oscillator stop function does not operate with normal output immediately when OE goes HIGH. Instead, normal output occurs after the oscillator startup time has elapsed.
SEIKO NPC CORPORATION --6
CF5037 series 2.5V operation VCC = 2.375 to 2.625V, GND = 0V, Ta = -40 to +85C unless otherwise noted.
Rating*1 Parameter Symbol Conditions Min Output duty cycle Duty Measurement cct. 3, measured at 0V differential output (crossing point), Ta = 25C, VCC = 2.5V f < 350MHz f 350MHz 5037A1: f = 120MHz 5037Bx: f = 180MHz Output swing*2 VOpp Measurement cct. 3, Ta = TOPR, differential output waveform peakto-peak 5037Cx: f = 250MHz 5037Dx: f = 400MHz 5037Ex: f = 600MHz 5037Fx: f = 700MHz Output rise time Output fall time Output enable time*3 Output disable time tr tf tOE tOD Measurement cct. 3, 20 to 80% differential output swing Measurement cct. 3, 80 to 20% differential output swing Measurement cct. 1, Ta = 25C Measurement cct. 1, Ta = 25C 45 40 0.25 0.25 0.25 0.25 (0.25) (0.25) - - - - Typ - - - - - - - - 0.3 0.3 - - Max 55 60 - - - - - - 0.7 0.7 2 200 % % V V V V V V ns ns ms ns Unit
*1. Values in parentheses ( ) are provisional only. *2. The said values are measured by using the NPC standard jig. *3. The built-in oscillator stop function does not operate with normal output immediately when OE goes HIGH. Instead, normal output occurs after the oscillator startup time has elapsed.
tPER tW
OUTN VOD' OUT VOD Hi-Z
80% OUT-OUTN 0 VOpp 20% 0
80% 0 20%
tr
VOS VOS
tf
OE
OE input waveform tr = tf 10ns
tOD
VIL
VIH
tOE
DUTY = 100tW/tPER (%) @ crossing point VOD = |VOD' - VOD|
Timing chart
SEIKO NPC CORPORATION --7
CF5037 series
FUNCTIONAL DESCRIPTION
Standby Function
When OE goes LOW, the oscillator stops and the output pins (OUT, OUTN) become high impedance.
OE HIGH (or open) LOW OUT, OUTN Either fO or fO/2 High impedance Oscillator Normal operation Stopped
Power-saving Pull-up Resistor
The OE pin pull-up resistance changes in response to the input level (HIGH or LOW). When OE is tied LOW (standby state), the pull-up resistance becomes large, reducing the current consumed by the resistance. When OE is open circuit, the pull-up resistance becomes small, decreasing the susceptibility to the effects of external noise.
SEIKO NPC CORPORATION --8
CF5037 series
MEASUREMENT CIRCUITS
Measurement Circuit 1
A IEE1, IEE2
VCC VCC2 OUT R1 VOD,VOD
Signal Generator
R1
C1 XOUT OE OUTN GND,TEST IIL1, IIL2
R1 VOH,VOL
VOS,VOS
A
VIH,VIL
500mVp-p, sine wave C1: 0.01F R1: 49.9 Note. Connect 0.01F and approximately 10F bypass capacitors between supply (VCC, VCC2) and GND. Note that the 0.01F capacitor should have circuit wiring as short as possible.
Measurement Circuit 2
A
IPD1 RPD1=VCC/IPD1
VCC XIN
VCC2 OUT
IZ
A
IZ OUTN OE GND
A
Measurement Circuit 3
VCC XIN
VCC2 OUT R1 Duty,VOpp,tr,tf Test point
XOUT OE
R1 OUTN GND Test point
R1: 49.9 Note 1. Connect 0.01F and approximately 10F bypass capacitors between supply (VCC, VCC2) and GND. Note that the 0.01F capacitor should have circuit wiring as short as possible. Note 2. The recommended differential probe used for measurement should have 5GHz analog bandwidth, 50k impedance, and < 1pF capacitive load. Note 3. If common-mode noise becomes a problem, a DC decoupling capacitor (approximately 1000pF) and terminating resistor matching the common-mode signal should be connected to the output center tap.
SEIKO NPC CORPORATION --9
CF5037 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
NC0309CE 2006.04
SEIKO NPC CORPORATION --10

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