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ADS-119MM

12-Bit, 10MHz, Low-Power Sampling A/D Converters

DATEL Data Acquisition products  

THERMAL REQUIREMENTS

All DATEL sampling A/D converters are fully characterized and speci-

fied over operating temperature (case) ranges of 0 to +70°C and –55

to +125°C. All room-temperature (TA = +25°C) production testing is

performed without the use of heat sinks or forced-air cooling. Thermal

impedance figures for each device are listed in their respective specifica-

tion tables.

These devices do not normally require heat sinks, however, standard

precautionary design and layout procedures should be used to ensure

devices do not overheat. The ground and power planes beneath the pack-

age, as well as all pcb signal runs to and from the device, should be as

heavy as possible to help conduct heat away from the package. Electrical-

lyinsulating, thermally-conductive "pads" may be installed underneath the

package. Devices should be soldered to boards rather than "socketed",

and of course, minimal air flow over the surface can greatly help reduce

the package temperature.

In more severe ambient conditions, the package/junction temperature of a

given device can be reduced dramatically (typically 35%) by using one of

DATEL's HS Series heat sinks. See Ordering Information for the assigned

part number. See page 1-183 of the DATEL Data Acquisition Components

Catalog for more information on the HS Series. Request DATEL Applica-

tion Note AN-8, "Heat Sinks for DIP Data Converters", or contact DATEL

directly, for additional information.

ADS-119

12-Bit, 10MHz, Low-Power Sampling A/D Converters

3000

2500

2000

1500

1000

500

0

Digital Output Code

Figure 6. ADS-119 Grounded Input Histogram

This histogram represents the typical peak-to-peak noise (including

quantization noise) associated with the ADS-119. 4,096 conversions were

processed with the input to the ADS-119 tied to analog ground.

0

–10

–20

–30

–40

–50

–60

–70

–80

–90

–100

–110

–120

–130

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

5

Frequency (MHz)

(fs = 10MHz, fin = 4.9MHz, Vin = –0.5dB, 4,096-point FFT)

Figure 7. ADS-119 FFT Analysis

+0.73

0

–0.47

0

Digital Output Code

4096

0

Digital Output Code

4096

Figure 8. ADS-119 Histogram and Differential Nonlinearity

DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 USA • Tel: (508) 339-3000 • www.datel.com • e-mail: help@datel.com

26 Jun 2015 MDA_ADS-119.C02 Page 7 of 10

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