THS3110IDRG4 datasheet(16/37 Pages) TI

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THS3110

1 k

Ω

49.9

Ω

0.1

µF

6.8

µF

-VS

-15 V

Ω Source

0.1

µF

6.8

µF

+VS

15 V

49.9

Ω

Ω LOAD

1 k

Ω

THS3110

THS3111

SLOS422E – SEPTEMBER 2003 – REVISED OCTOBER 2009........................................................................................................................................ www.ti.com

APPLICATION INFORMATION

MAXIMUM SLEW RATE FOR REPETITIVE

SIGNALS

The THS3110 and THS3111 are recommended for

high slew rate pulsed applications where the internal

nodes of the amplifier have time to stabilize between

pulses. It is recommended to have at least 20-ns

delay between pulses.

The THS3110 and THS3111 are not recommended

for applications with repetitive signals (sine, square,

sawtooth, or other) that exceed 900 V/

μs. Using the

part in these applications results in excessive current

draw from the power supply and possible device

damage.

For applications with high slew rate, repetitive signals,

the THS3091 and THS3095 (single), or THS3092 and

THS3096 (dual) are recommended.

Figure 51. Wideband, Noninverting Gain

Configuration

WIDEBAND, NONINVERTING OPERATION

The THS3110 and THS3111 are unity-gain stable,

Current-feedback amplifiers are highly dependent on

100-MHz, current-feedback operational amplifiers,

the feedback resistor RF for maximum performance

designed to operate from a ±5-V to ±15-V power

and stability. Table 1 shows the optimal gain setting

supply.

resistors RF and RG at different gains to give

maximum bandwidth with minimal peaking in the

Figure 51 shows the THS3111 in a noninverting gain

frequency response. Higher bandwidths can be

of 2-V/V configuration typically used to generate the

achieved, at the expense of added peaking in the

performance

curves.

Most

the

curves

were

frequency response, by using even lower values for

characterized using signal sources with 50-

Ω source

RF.

Conversely,

increasing

decreases

the

impedance,

and

with

measurement

equipment

bandwidth, but stability is improved.

presenting a 50-

Ω load impedance.

Table 1. Recommended Resistor Values for

Optimum Frequency Response

THS3110 AND THS3111 RF AND RG VALUES FOR MINIMAL PEAKING WITH RL = 100 Ω

GAIN (V/V)

SUPPLY VOLTAGE (V)

RG (Ω)

RF (Ω)

±15

—

1.5 k

±5

—

1.5 k

±15

1 k

±5

1.15 k

±15

200

806

±5

200

806

±15

66.5

604

±5

66.5

604

±15

1 k

–1

±5

1 k

–2

±15 and ±5

549

1.1 k

–5

±15 and ±5

182

909

–10

±15 and ±5

64.9

649

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