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The AD7949 is an 8-channel, 14-bit, charge redistribution successive approximation register (SAR) analog-to-digital converter (ADC) that operates from...
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AD7949 on Analog.com

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AD7949SCPZ-EP Package Coefficient of Thermal Expansion (CTE)

crdufour

on Jan 14, 2026

Category: Datasheet/Specs

Product Number: AD7949SCPZ-EP, AD7949

I am looking for the package CTE of AD7949SCPZ-EP. It has a 20-Lead Lead Frame Chip Scale Package (LFCSP), 4 mm x 4 mm x 0.75 mm. No materials declaration was available for this part on the product page: https://www.analog.com/en/products/AD7949.html

adc Datasheet/Specs Multiplexed A/D Converters thermal analog to digital converters AD7949SCPZ-EP data converters ad7949 CTE Precision A/D Converters Show More

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crdufour
on Jan 14, 2026 11:15 AM
0
A calculation was included in the datasheet, but I was wondering if there was a standard value based on your test data... https://www.analog.com/media/en/technical-documentation/data-sheets/AD7949.pdf

Reference Voltage Temperature Coefficient

Reference voltage temperature coefficient is derived from the typical shift of output voltage at 25°C on a sample of parts at the maximum and minimum reference output voltage (VREF) measured at TMIN, T (25°C), and TMAX.

It is expressed in ppm/°C as

{TCV}_{REF}(ppm/C)=\frac{V_{REF}(Max)-V_{REF}(Min)}{V_{REF}(25C)x(T_{MAX}-T_{MIN})}x10^6

where:

VREF (Max) = maximum VREF at TMIN, T (25°C), or TMAX.

VREF (Min) = minimum VREF at TMIN, T (25°C), or TMAX.

VREF (25°C) = VREF at 25°C.

TMAX = +85°C.

TMIN = –40°C.
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FMarasigan

on Jan 17, 2026 12:24 PM in reply to crdufour
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Hi NathanT

Could you or your team help look into this query?

Thanks,
Francis
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FMarasigan

on Jan 17, 2026 12:24 PM in reply to crdufour
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Hi NathanT

Could you or your team help look into this query?

Thanks,
Francis
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AD7949SCPZ-EP Package Coefficient of Thermal Expansion (CTE)