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Part Number: KM4212
Description: The KM4212 is an ultra-low power, low cost, voltage feedback amplifier. The KM4212 uses only 70A of su...
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KM4212
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General Description
KM4212 General Description
The KM4212 is an ultra-low power, low cost, voltage feedback amplifier. The KM4212 uses only 70A of supply current and 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 KM4212 offers high bipolar performance at a low CMOS price. The KM4212 offers superior dynamic performance with a 7.3MHz small signal bandwidth and 9V/s slew rate. The combination of low power,high bandwidth, and rail-to-rail performance make the KM4212 well suited for battery-powered commu-nication/computing systems.
The KM4112 single amplifier is also available.
The KM4212 is a single supply, general purpose, voltage-feedback amplifier fabricated on a complementary bipolarprocess. The KM4212 offers 7.3MHz unity gain bandwidth, 9V/s slew rate, and only 70A supply current. It features a rail-to-rail output stage and is unity gain stable.
The design utilizes a patent pending topology that provides increased slew rate performance. The common mode input range extends to 300mV below ground and to 1.2V below Vs. 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 thatimproves recovery time.
The typical circuit schematic is shown in Figure 1.
KM4212 Maximum Ratings
supply voltage.................. .. 0 to +6V
maximum junction temperature ....... .....+175
storage temperature range.......... -65 to +150
lead temperature (10 sec) ...............+260
operating temperature range (recommended). -40 to +85
input voltage range ............+VS+0.5V; -Vs-0.5V
internal power dissipation..... see power derating curves
maximum junction temperature ....... .....+175
storage temperature range.......... -65 to +150
lead temperature (10 sec) ...............+260
operating temperature range (recommended). -40 to +85
input voltage range ............+VS+0.5V; -Vs-0.5V
internal power dissipation..... see power derating curves
KM4212 Features
70A supply current
7.3MHz bandwidth
Fully specified at +2.7V and +5V supplies
Output voltage range: 0.04V to 4.96V; Vs = +5
Input voltage range: -0.3V to +3.8V; Vs= +5
9V/s slew rate
±4mA linear output current
±9mA short circuit output current
29nV/Hz input voltage noise
Competes with low power CMOS amps
Small package options (SOIC-8 and MSOP-8)
7.3MHz bandwidth
Fully specified at +2.7V and +5V supplies
Output voltage range: 0.04V to 4.96V; Vs = +5
Input voltage range: -0.3V to +3.8V; Vs= +5
9V/s slew rate
±4mA linear output current
±9mA short circuit output current
29nV/Hz input voltage noise
Competes with low power CMOS amps
Small package options (SOIC-8 and MSOP-8)
KM4212 Typical Application
Portable/battery-powered applications
A/D buffer
Active filters
Signal conditioning
Portable test instruments
A/D buffer
Active filters
Signal conditioning
Portable test instruments
KM4212
PDF/DataSheet Download
- Datasheet: KM4212
- File Size: 186795 KB
- Manufacturer: FAIRCHILD [Fairchild Semiconductor]
- Click here to Download
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