HomedatasheetCM1221

CM1221 Datasheet

Reception Front Monitor Pmic Developed For Cd-r And Cd-rw
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Description

Features, Applications

DESCRIPTION The is a power monitor PDIC (PMIC) developed for CD-R and CD-RW optical pickup applications. The is a fully integrated trans-impedence amplifier and photodiode on the same silicon. The package a COB-6PIN that is suitable for compact, thin optical pickups. The CM1221 also incorporates Capella's patented Automatic Calibration Circuitry (ACC) to reduce the offset. The ACC completes the calibration process before the disk up to speed.

FEATURES Designed for CD-R and CD-RW applications Frequency characteristics: 100MHz (min) Gain control can be changed by external resistor (100~500) Compact and thin package (COB-6PIN) Solder re-flowing permitted

APPLICATIONS CD-R and CD-RW Optical Pickups DVD/CD-R/CD-RW Combo Pickups

DISCLAIMER This preliminary data sheet indicates that this product is still in the design cycle. All specifications are based on design goals only. Capella Microsystems Inc. assumes no responsibility for the use of this product. Capella Microsystems Inc. reserves the right to make changes in specifications or discontinue this product at any time without notice. Please contact Capella Microsystems Inc. for possible updates before starting a design. Capella Microsystems Inc. products are not designed for use in life support applications. Any parties who use these products in such applications so at their own risk and agree to fully indemnify Capella Microsystems Inc. for any damages resulting from such improper usage or sale.

Description
Power Supply Voltage Power Dissipation Storage Temperature
Operating Supply Voltage Range Operating Reference Voltage Range Operating Temperature Range

Note 1: VREF must be able to sink/source �500�A Note 2: VREF must be stable and within operating range 50ms after power-up

10% DC Supply Reference voltage input pin provided by a stable external voltage source. GND (Ground)

I/V Amplifier Output Latter Amplifier Input Output

Description Current Consumption DC Output Voltage (Sensitivity) Output Offset Voltage Cutoff Frequency Response Characteristic Maximum Output Voltage Automatic Calibration power on setup time Automatic Calibration Time

Condition (Note 2) DC Gain (Note 3) (Note 2) -3dB point for 1MHz modulated signal (Note 3) Time (rise time, fall time) for a 1Vp-p pulse (Note 3) Output minimum voltage with reference to GND During power up (Note 3) During power up (Note 3)

Note 2: Dark conditions, which implies no light incident on the photodiode. Note 3: Guaranteed by design.


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Manufacturer information

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