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CF5008A1

Part Number	CF5008A1
Manufacturer	Nippon Precision Circuits Inc
Description	VCXO Module IC
Published	Mar 23, 2005
Detailed Description	CF5008A1 NIPPON PRECISION CIRCUITS INC. VCXO Module IC OVERVIEW The CF5008A1 is a VCXO module IC that employs a circui...
Datasheet	CF5008A1 PDF File

Overview

CF5008A1 NIPPON PRECISION CIRCUITS INC.
VCXO Module IC OVERVIEW The CF5008A1 is a VCXO module IC that employs a circuit structure with low parasitic capacitance effects and a wide frequency range.
Built-in components mean that few external components are required to construct a VCXO.
FEATURES s s s s s s s s Up to 30 MHz operation Inverter ampliﬁer feedback resistor built-in 8 mA (VDD = 5 V), 4 mA (VDD = 3 V) drive capability 2.
7 to 5.
5 V supply voltage Circuit structure with low parasitic capacitance effects • Direct connection to varicap diodes and crystal Few external components required to form a VCXO Amplitude limiting resistor Rd built-in Chip form (CF5008A1) SERIES CONFIGURATION Version CF5008A1 Output frequency fO Input level CMOS Output duty level CMOS S t a n d by output state High impedance ORDERING INFORMATION D e vice C F 5 0 0 8 A 1 –2 P ackag e Chip form NIPPON PRECISION CIRCUITS—1 CF5008A1 PAD LAYOUT (Unit : µm) UNUSED2 VDD INH XT2 UNUSED1 1 2 3 4 5 (1400,1300) 8 7 6 Q (0,0) VSS XT Chip size: 1.
40 × 1.
30 mm Chip thickness: 220 ± 30 µm Chip base: V D D level PAD DIMENSIONS Number 1 2 3 4 5 6 7 8 Name UNUSED1 UNUSED2 XT2 VDD INH Q XT VSS I/O – – O – I O I – Not used.
Not used.
Oscillator output pin Supply voltage Output-control input pin.
Q signal output enabled when HIGH or open.
High-impedance output when LOW .
Output pin Oscillator input pin Ground Description P ad dimensions [µm] X 153 425 660 865 1202 1245 346 155 Y 1112 1112 1112 1112 1112 152 188 188 NIPPON PRECISION CIRCUITS—2 CF5008A1 BLOCK DIAGRAM Rf CG XT VDD VSS CD Rd Q CC Rp XT2 RB2 Control Circuits INH OSCILLATOR ELEMENT CONSTANTS (typical values) R B1 CF5008A1 100k Ω R B2 50k Ω Rd 450 Ω Rf 150k Ω Rp 100k Ω CG 20pF CD 10pF CC 70pF NIPPON PRECISION CIRCUITS—3 CF5008A1 SPECIFICATIONS Absolute Maximum Ratings VSS = 0 V P arameter Supply voltage range Input voltage range Output voltage range Operating temperature range Storage temperature range Output curre...

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CF5008A1 VCXO Module IC - Nippon Precision Circuits Inc

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