ADS-118A データシートの表示（PDF） - DATEL Data Acquisition products

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ADS-118A

12-Bit, 5MHz, Low-Power Sampling A/D Converters

DATEL Data Acquisition products  

THERMAL REQUIREMENTS

All DATEL sampling A/D converters are fully characterized and specified

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 specification 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

package, 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.

ADS-118, ADS-118A

12-Bit, 5MHz, Low-Power Sampling A/D Converters

Electrically-insulating, 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 Application

Note AN8, "Heat Sinks for DIP Data Converters",

or contact DATEL directly, for additional information.

0

–10

–20

–30

–40

–50

–60

–70

–80

–90

–100

–110

–120

–130

0

250 500 750

1

1.25 1.5 1.75

2

2.25

kHz kHz kHz MHz MHz MHz MHz MHz MHz

Frequency

(fs = 5MHz, fin = 2.45MHz, Vin = –0.5dB, 4,096-point FFT)

2.5

MHz

Figure 5. FFT Analysis of ADS-118

+0.67

0

–0.47

0

Digital Output Code

4096

0

4096

Digital Output Code

Figure 6. ADS-118 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 ADS-118.B05 Page 6 of 9

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