CHT3029-QEG Datasheet, PDF (3/12 Pages) United Monolithic Semiconductors – DC-31GHz 4Bit Digital Attenuator

DC-31GHz 4Bit Digital Attenuator
CHT3029-QEG
Definitions
n: Attenuator state index with 0  n  15
dB_S21(n) : Measured magnitude of S21 in dB at attenuation state n
Phase_S21(n) : Measured phase of S21 in degree at attenuation state n
Attenuation Error (Att_err)
Att_err(n)= dB_S21 (n) - dB_S21(0) –1xn (dB)
Att _ err(n)
The translation of Att_err(n) from dB to linear is given by: Att_err_lin(n) = 10 ²⁰
Successive State Attenuation Error (Succ_Att_err)
Succ_Att_err(n)= dB_S21(n)-dB_S21(n-1)-(-1)
Phase variation (Phivar)
Phivar(n) = Phase_S21(n) - Phase_S21(0) (°)
RMS Attenuation Error (Rms_att_err)
 ^{Rms_att_err = 20log}_{}^1
1 _. ¹⁵ _(1
16 _n0
Att
_ err _ lin(n))²


(dB)
RMS Phase variation (Rms_Phivar)
Rms_Phivar =
15
^{(Phi var(n))2}
n0
(°)
16
Ref. : DSCHT3029-QEG5357 - 23 Dec 15
3/12
Specifications subject to change without notice
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