KM4200

Features:

`260MHz bandwidth
`Fully specified at +2.7V and +5V supplies
`Output voltage range: 0.036V to 4.953V; V<sub>S</sub>= +5; R<sub>L</sub> = 2k
`Input voltage range: -0.3V to +3.8V; Vs=+5
`145V/s slew rate
`4.2mA supply current per amplifier
`±55mA linear output current
`±85mA short circuit current
`Directly replaces AD8052 and AD8042 in single supply applications
`Small package options (SOIC and MSOP)


Application

·A/D driver
·Active filters
·CCD imaging systems
·CD/DVD ROM
·Coaxial cable drivers
·High capacitive load driver
·Portable/battery-powered applications
·Twisted pair driver
·Video driver


Specifications

supply voltage ......................0 to +6V
maximum junction temperature ..............+175
storage temperature range ........... -65 to +150
lead temperature (10 sec) +300
operating temperature range (recommended) . .-40 to +85
input voltage range ..............+V_S+0.5V;V_S-0.5V
internal power dissipation...... see power derating curves


Description

The KM4200 is a dual, low cost, voltage feedback amplifier. This amplifier is designed to operate on +2.7V, +5V, or ±2.5V supplies. The input voltage range extends 300mV below the negative rail and 1.2V below the positive rail. The KM4100 (single) and KM4101 (single with disable) are also available.

The KM4200 offers superior dynamic performance with a 260MHz small signal bandwidth and 145V/s slew rate. The combination of low power, high out-put current drive, and rail-to-rail performance make the KM4200 well suited for battery-powered com-munication/computing systems.

The combination of low cost and high performancemake the KM4200 suitable for high volume applica-tions in both consumer and industrial applications such as wireless phones, scanners, and color copiers.

The KM4200 is a single supply, general purpose,voltage-feedback amplifier fabricated on a complementary bipolar process using a patent pending topography. It features a rail-to-rail output stage and is unity gain stable. Both gain bandwidth and slew rate are insensitive to temperature.

The common mode input range extends to 300mV below ground and to 1.2V below V_S. Exceeding these values will not cause phase reversal. However, if the input voltage exceeds the rails by more than 0.5V, the input ESD devices will begin to conduct. The output will stay at the rail during this overdrive condition.

The design uses a Darlington output stage. The out-put stage is short circuit protected and offers "soft"saturation protection that improves recovery time.

The typical circuit schematic is shown in Figure 1.