SPT SPT220AIH Datasheet

Package Dimensions

Bottom View

Typical Performance

FAST SETTLING, WIDEBAND OPERA TIONAL AMPLIFIER

General Description

The SPT220 is a wide bandwidth DC-coupled operational ampli­fier that defines the state-of-the-art in high speed op amps. A ­3dB bandwidth of DC to 190MHz is achieved using a current
feedback architecture design. Ultra-fast settling time (8nsec to

0.1%) and slew rate (7000V/µsec) make the SPT220 a superior
amplifier for pulsed and digital applications.

Since thermal tail has been eliminated, the SPT220 settles fast
and remains solidly at the desired level. Flat gain and linear
phase (1.2° deviation from linear) from DC to beyond 100MHz
help the SPT220 to achieve distortion levels uncommonly low
relative to conventional op amps.

Using the SPT220 is as easy as adding power supplies and a
gain-setting resistor. The result is reliable, consistent perfor­mance because such characteristics as bandwidth and settling
time are virtually independent of gain setting. Unlike conventional
op amp designs where the optimum gain-bandwidth product
occurs at a high gain, minimum settling time at a gain of -1,
maximum slew rate at a gain of +1, et cetera, the SPT220 offers
predictable response at gain settings from ±1 to ±50. This,
coupled with consistent performance from unit to unit with no
external compensation, makes the SPT220 a real time and cost­saver in design and production situations alike.

This combination of features makes the SPT220 appropriate for a
broad range of applications. The wide bandwidth, DC coupling,
and fast settling lend themselves well to high speed D to A and
“flash” A to D applications. Both receivers and transmitters in
optical fiber systems have similar requirements. High gain and
phase linearity and corresponding low distortion make the
SPT220 ideal for many digital communication system applica­tions, such as in the demodulator, where the need for both DC
coupling and high frequency amplification creates requirements
that are difficult to meet.

The SPT220 is constructed using thin film resistor/bipolar transis­tor technology, and is available in the following versions:

SPT220AIH -25°C to +85°C 12-pin TO-8 can.

Features

■

-3dB bandwidth of 190MHz

■

0.1% settling in 8ns

■

7000V/µs slew rate

■

1.9ns rise and fall times

■

Low distortion, linear phase

■

Direct replacement for CLC220

Applications

■

Very high-speed A to D, D to A conversion

■

High-speed fiber optic systems

■

Baseband and video communications

■

Radar and IF processors

■

Very fast risetime pulse amplifiers

4755 Forge Road, Colorado Springs, Colorado 80907, USA

Phone: [phone] FAX: [phone] Website: http://www.spt.com E-Mail: [e-mail]

Pulse Response

2 10/9/98

SPT220

SPT220 Electrical Characteristics

(Av = +20,Vcc = ±15V, RL = 200Ω, Rf = 1500Ω; unless specified)

Absolute Maximum Ratings

Min/max ratings are based on product characterization and simulation. Individual parameters are tested as noted. Outgoing quality levels are
determined from tested parameters.