AD7625 datasheet(23/30 Pages) AD

23 / 30 page

LTC6228/LTC6229

Rev. B

For more information www.analog.com

TYPICAL APPLICATIONS

Figure 10. Wideband Differential to Single-Ended Converter

Figure 11. Frequency Response of Differential to

Single-Ended Converter

Figure 12. Common Mode Gain vs Frequency

Figure 13. Pulse Response of the Differential to Single-Ended Converter

6228 F10

CF1

18pF

200

348

49.9

150

100

49.9

RO1

49.9

CF2

18pF

VOUT

VIN1

VIN2

–5V

–

LTC6228

Wideband Differential to Single-Ended Converter

The combination of high slew rate and bandwidth enables

the LTC6228 to be used as a translator for large signals

at high frequencies.

Figure 10 shows the implementation of a wide band, dif-

ferential to single-ended converter with a gain of –6dB

using just one LTC6228. Figure 11 shows the frequency

response of the circuit for a differential input of 2VP-P. The

bandwidth obtained was 50MHz. The common mode gain

of the driver is shown in Figure 12, and is limited by the

matching between the resistors in the circuit. Figure 13

shows the response of the driver to a 1VP-P differential

square wave signal.

FREQUENCY(Hz)

100kHz

–27

–3

–9

–15

–21

–6

–12

–18

–24

–30

100MHz

1MHz

6228 F11

10MHz

FREQUENCY (Hz)

6228 F12

100k

100M

10M

–80

–20

–40

–60

–10

–30

–50

–70

–90

USING 1% RESISTORS

200ns/DIV

100mV/DIV

6228 F13

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