MAX1169 Datasheet, PDF (19/20 Pages) Maxim Integrated Products – 58.6ksps, 16-Bit, 2-Wire Serial ADC in a 14-Pin TSSOP

58.6ksps, 16-Bit, 2-Wire Serial ADC
in a 14-Pin TSSOP
Signal-to-Noise Plus Distortion
Signal-to-noise plus distortion (SINAD) is the ratio of the
fundamental input frequency’s RMS amplitude to RMS
equivalent of all other ADC output signals:
SINAD(db)
=
20
×
⎛
log _⎝⎜
Signal_RMS
Noise_RMS
⎞
⎠⎟
Effective Number of Bits
Effective number of bits (ENOB) indicates the global
accuracy of an ADC at a specific input frequency and
sampling rate. An ideal ADC’s error consists of quanti-
zation noise only. With an input range equal to the
ADC’s full-scale range, calculate the ENOB as follows:
ENOB
=
⎛
⎝⎜
SINAD - 1.76
6.02
⎞
⎠⎟
Total Harmonic Distortion
Total harmonic distortion (THD) is the ratio of the RMS
sum of the input signal’s first five harmonics to the fun-
damental itself, expressed as:
⎛
THD = 20 × log ^⎜
V₂ ²+V₃ ²+V₄ ²+V₅ ²
⎞
⎟
⎝⎜
V₁
⎠⎟
where V₁ is the fundamental amplitude, and V₂ through
V₅ are the amplitudes of the 2nd- through 5th-order
harmonics.
Spurious-Free Dynamic Range
Spurious-free dynamic range (SFDR) is the ratio of RMS
amplitude of the fundamental (maximum signal compo-
nent) to the RMS value of the next-largest distortion
component.
Chip Information
TRANSISTOR COUNT: 18,269
PROCESS: BiCMOS
Package Information
For the latest package outline information and land patterns,
go to www.maxim-ic.com/packages. Note that a “+”, “#”, or
“-” in the package code indicates RoHS status only. Package
drawings may show a different suffix character, but the drawing
pertains to the package regardless of RoHS status.
PACKAGE TYPE PACKAGE CODE DOCUMENT NO.
14 TSSOP
U14-1
21-0066
______________________________________________________________________________________ 19