SPT205 查看數據表（PDF） - Signal Processing Technologies

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SPT205

OVERDRIVE-PROTECTED WIDEBAND OP AMP

Signal Processing Technologies 

OVERDRIVE-PROTECTED WIDEBAND OP AMP

General Description

The SPT205 is a wideband overdrive-protected operational

amplifier designed for applications needing both speed and low

power operation. Utilizing a well-established current feedback

architecture, the SPT205 exhibits performance far beyond that

of conventional voltage feedback op amps. For example, the

SPT205 has a bandwidth of 170MHz at a gain of +20 and

settles to 0.1% in 22ns. Plus, the SPT205 has a combination of

important features not found in other high-speed op amps.

For example, the SPT205 has been designed to consume little

power – 570mW at ±15V supplies. The result is lower power

supply requirements and less system-level heat dissipation. In

addition, the device can be operated on supply voltages as low

as ±5V for even lower power dissipation.

Complete overdrive protection has been designed into the part.

This is critical for applications, such as ATE and instrumentation,

which require protection from signal levels high enough to cause

saturation of the amplifier. This feature allows the output of the

op amp to be protected against short circuits using techniques

developed for low-speed op amps. With this capability, even the

fastest signal sources can feature effective short circuit protec-

tion.

The SPT205 is constructed using thin film resistor/bipolar

transistor technology, and is available in the following versions:

SPT205AIH -25 to +85 °C 12-pin TO-8 can

SPT205AMH -55 to +125 °C 12-pin TO-8 can, features

burn-in and hermetic testing

Typical Performance

Gain Setting

Parameter

+7 +20 +50 -1 -20 -50 Units

Bandwidth (-3 dB) 220 170 80 220 130 80 MHz

Rise time

1.7 2.2 4.7 1.7 2.9 4.7 ns

Slew Rate

2.4 2.4 2.4 2.4 2.4 2.4 V/ns

Settling Time (to 0.1%) 22 22 20 21 20 19 ns

Package Dimensions

Features

s -3dB bandwidth of 170MHz

s 0.1% settling in 22ns

s Complete overdrive protection

s Low power: 570mW (190mW at ±5V)

s 3MΩ input resistance

s Output may be current limited

s Direct replacement for CLC205

Applications

s Fast, precision A/D conversion

s Automatic test equipment

s Input/output amplifiers

s Photodiode, CCD preamps

s IF processors

s High-speed modems, radios

s Line drivers

Large Signal Pulse Response

Av = +20

Av = -20

Time (5ns/div)

Bottom View

205 Plot8

4755 Forge Road, Colorado Springs, Colorado 80907, USA

Phone: (719) 528-2300 FAX: (719) 528-2370 Website: http://www.spt.com E-Mail: sales@spt.com

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