beautypg.com

Applications information – Rainbow Electronics ADC16061 User Manual

Page 19

background image

Applications Information

(Continued)

mance. Amplifiers that have been used successfully to drive
the analog inputs of the ADC16061 include the CLC427,
CLC440, LM6152, LM6154, LM6181 and the LM6182. A
small series reistor at each amplifier output and a capacitor
across the analog inputs (as shown in

Figure 7

) will often im-

prove performance.

Operating with the reference pins outside of the speci-
fied range.
As mentioned in section 1.2, V

REF

should be in

the range of

1.8V

V

REF

2.2V

with V

REF

IN

1.0V. Operating outside of these limits could

lead to excessive distortion or noise.

Using a clock source with excessive jitter, using an ex-
cessively long clock signal trace, or having other sig-
nals coupled to the clock signal trace.
This will cause the
sampling interval to vary, causing excessive output noise
and a reduction in SNR performance.

Connecting pins marked

NC

to any potential. Some of

these pins are used for factory testing. They should all be left
floating. Connecting them to ground, power supply, or some
other voltage could result in a non-functional device.

www.national.com

19