LTC6990 - TimerBlox: Voltage Controlled Silicon Oscillator

The LTC®6990 is a precision silicon oscillator with a programmable frequency range of 488Hz to 2MHz. It can be used as a fixed-frequency or voltage-controlled oscillator (VCO). The LTC6990 is part of the TimerBlox® family of versatile silicon timing devices.

A single resistor, RSET, programs the LTC6990’s internal master oscillator frequency. The output frequency is determined by this master oscillator and an internal frequency divider, NDIV, programmable to eight settings from 1 to 128.

Features

Fixed-Frequency or Voltage-Controlled Operation – Fixed: Single Resistor Programs Frequency with <1.5% Max Error – VCO: Two Resistors Set VCO Center Frequency and Tuning Range
Frequency Range: 488Hz to 2MHz
2.25V to 5.5V Single Supply Operation
72μA Supply Current at 100kHz
500μs Start-Up Time
VCO Bandwidth >300kHz at 1MHz
CMOS Logic Output Sources/Sinks 20mA
50% Duty Cycle Square Wave Output
Output Enable (Selectable Low or Hi-Z When Disabled)
–55°C to 125°C Operating Temperature Range
Available in Low Profile (1mm) SOT-23 (ThinSOT™) and 2mm × 3mm DFN Package
Click here to start your design with the LTC6990 Online Design Tool!

Typical Application

Applications

Low Cost Precision Programmable Oscillator
Voltage-Controlled Oscillator
High Vibration, High Acceleration Environments
Replacement for Fixed Crystal and Ceramic Oscillators
Portable and Battery-Powered Equipment

Packaging

**Order Information**
Part Number	Package	Temp	Price(1-99)	Price (1k)*
LTC6990CDCB#PBF	2x3 DFN-6	C	$2.16
LTC6990CDCB#TRMPBF	2x3 DFN-6	C	$2.16	$1.60
LTC6990CDCB#TRPBF	2x3 DFN-6	C	$2.16	$1.55
LTC6990CS6#PBF	SOT-23	C	$2.16
LTC6990CS6#TRMPBF	SOT-23	C	$2.16	$1.60
LTC6990CS6#TRPBF	SOT-23	C	$2.16	$1.55
LTC6990HDCB#PBF	2x3 DFN-6	H	$3.02
LTC6990HDCB#TRMPBF	2x3 DFN-6	H	$3.02	$2.22
LTC6990HDCB#TRPBF	2x3 DFN-6	H	$3.02	$2.17
LTC6990HS6#PBF	SOT-23	H	$3.02
LTC6990HS6#TRMPBF	SOT-23	H	$3.02	$2.22
LTC6990HS6#TRPBF	SOT-23	H	$3.02	$2.17
LTC6990IDCB#PBF	2x3 DFN-6	I	$2.48
LTC6990IDCB#TRMPBF	2x3 DFN-6	I	$2.48	$1.83
LTC6990IDCB#TRPBF	2x3 DFN-6	I	$2.48	$1.78
LTC6990IS6#PBF	SOT-23	I	$2.48
LTC6990IS6#TRMPBF	SOT-23	I	$2.48	$1.83
LTC6990IS6#TRPBF	SOT-23	I	$2.48	$1.78
LTC6990MPS6#PBF	SOT-23	MP	$6.48
LTC6990MPS6#TRMPBF	SOT-23	MP	$6.48	$4.70
LTC6990MPS6#TRPBF	SOT-23	MP	$6.48	$4.65

Demo Boards


Part Number	Description	Price
DC1562B-A	LTC6990 Demo Board \| 1kHz to 10kHz VCO	$25.00

LTC6990 - TimerBlox: Voltage Controlled Silicon Oscillator

Features

Typical Application

Applications

Packaging

Demo Boards

Datasheet

Reliability Data

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Software and Simulation

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