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EL2257CS Datasheet(PDF) 1 Page - Elantec Semiconductor |
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EL2257CS Datasheet(HTML) 1 Page - Elantec Semiconductor |
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1 / 21 page  © 1995 Elantec, Inc. General Description The EL2257C/EL2357C are supply op amps. Prior single supply op amps have generally been limited to bandwidths and slew rates 1/4 that of the EL2257C/EL2357C. The 125 MHz bandwidth, 275 V/µs slew rate, and 0.05%/0.05° differential gain/differential phase makes this part ideal for single or dual supply video speed applications. With its voltage feedback architecture, this amplifier can accept reactive feedback networks, allowing them to be used in analog filtering appli- cations. The inputs can sense signals below the bottom supply rail and as high as 1.2V below the top rail. Connecting the load resistor to ground and operating from a single supply, the outputs swing com- pletely to ground without saturating. The outputs can also drive to within 1.2V of the top rail. The EL2257C/EL2357C will output ±100 mA and will operate with single supply voltages as low as 2.7V, making them ideal for portable, low power applications. The EL2257C/EL2357C have a high speed disable feature. Applying a low logic level to all ENABLE pins reduces the supply current to 0 µA within 50 ns. Each amplifier has its own ENABLE pin. This is useful for both multiplexing and reducing power consumption. The EL2257C/EL2357C also have an output voltage clamp feature. This clamp is a fast recovery (<7 ns) output clamp that prevents the output voltage from going above the preset clamp voltage. This feature is desirable for A/D applications, as A/D converters can require long times to recover if overdriven. The EL2257C/EL2357C are available in plastic DIP and SOIC pack- ages. Both parts operate over the industrial temperature range of -40°C to +8 5° C . For s i ngle a m plif ie r ap pli c ations , s e e the EL2150C/EL2157C. For space saving, industry standard pin out dual and quad applications, see the EL2250C/EL2450C. Connection Diagrams Top View Top View Features • Specified for +3V, +5V, or ± 5V Applications • Power Down to 0 µA • Output Voltage Clamp • Large Input Common Mode Range 0V < VCM < VS - 1.2V • Output Swings to Ground Without Saturating • -3 dB Bandwidth = 125 MHz • ± 0.1 dB Bandwidth = 30 MHz • Low Supply Current = 5 mA • Slew Rate = 275 V/µs • Low Offset Voltage = 4 mV max • Output Current = ±100 mA • High Open Loop Gain = 80 dB • Differential Gain = 0.05% • Differential Phase = 0.05° Applications • Video Amplifier • PCMCIA Applications •A/D Driver •Line Driver • Portable Computers • High Speed Communications • RGB Printer, FAX, Scanner Applications • Broadcast Equipment • Active Filtering • Multiplexing Ordering Information Part No. Temp. Range Package Outline # EL2257CN -40°C to +85°C 14 Pin PDIP MDP0031 EL2257CS -40°C to +85°C 14 Pin SOIC MDP0027 EL2357CN -40°C to +85°C 16 Pin PDIP MDP0031 EL2357CS -40°C to +85°C 16 Pin SOIC MDP0027 EL2257C/EL2357C 125 MHz Single Supply, Clamping Op Amps |
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