Optical Receiver IC for CD/DVD/Blue-Laser Application

Abstract

In this paper an optoelectronic receiver IC for optical data storage applications is presented. The IC was developed in a 0.5 µm BiCMOS technology with integrated PIN-photodiodes. It includes a new architecture of highspeed and low-noise transimpedance amplifiers with a gain range of 130 Ω to 270 kΩ programmable with a serial interface. The bandwidth is 260 MHz for highest gain which gives a gain-bandwidth-product of 70 THzΩ and a sensitivity improvement by a factor of 2 compared to published OEICs. The amplifiers support a special write/clip mode. The output buffers are 130 Ω impedance matched for optimized data transmission over a flex cable.

A low-noise current preamplifier in 120 nm CMOS technology

“…Table 1 shows a comparison of the presented current preamplifier to recent publications. Although the gain is not the highest, which is difficult to compare because of multistage amplifier design of Sturm et al (2005) and de Jong et al (2002), we achieved the highest bandwidth. We fabricated in the newest technology, which has only 1.5 V supply voltage.…”

“…Furthermore we designed the chip with the smallest active area. Unfortunately Sturm et al (2005) and de Jong et al (2002) did not mention their active area, but it can be estimated that a multistage amplifier design occupies a larger area. In Table 2 the performance of the proposed current preamplifier is summarized.…”

“…Current amplifiers are already topic in recent publications. The potential advantage of a current preamplifier circuit combined with a transimpedance amplifier compared to a classical transimpedance amplifier is shown in Sturm et al (2005). An optoelectronic receiver IC for optical storage applications is presented.…”

On frequency response and stability of an optical front–end with variable‐gain current amplifier using a bipolar junction transistor translinear loop

“…The OFEs intended for optical storage systems (CD, DVD, and Blue‐Ray) require variable‐gain TIAs . A class of variable‐gain TIAs based on VGCAs are followed by current‐to‐voltage converters (CVCs) with constant gain (Figure ). The photodiode current I pd is amplified/attenuated by the VGCA, and its output current I cvc is fed to the CVC.…”

Monolithic optical receiver in 0.5 μm BiCMOS technology for wavelengths up to 850 nm

“…Compared to [7] a correction circuit for the frequency response was implemented and the front end was optimized, which results in a significantly better sensitivity and a nearly doubled transimpedance bandwidth product. The process used here was also used to implement a CD/DVD receiver [8] showing the usability for mass production. Table 1 lists all the mentioned publications with the most important results.…”