DC-6GHz 6-BIT DIGITAL ATTENUATOR
Definitions
CHT4012-98F
n: Attenuator state index with 0 ≤ n ≤ 63
Phase_S21(n):
Measured phase of S21 in degree at attenuation state n
dB_S21(n):
Measured magnitude of S21 in dB at attenuation stateni
Attenuation Error (Att_err)
Att_err(n)= dB_S21 (n) - dB_S21(0) –0.5
x
n (dB)
The translation of Att_err(i) from dB to linear is given by: Att_err_lin(n) =
10
Phase variation (Phivar)
Phivar(n) = Phase_S21(n) - Phase_S21(0) (°)
RMS Attenuation Error (Rms_att)
Att
_
err
(
n
)
20
Rms_att =
20 log 1
1
63
. (1
Att
_
err
_
lin
(
n
))
2
64
n
0
(dB)
RMS Phase variation (Rms_Phivar)
63
(
Phi
var(
n
))
2
Rms_Phivar =
n
0
64
(°)
Absolute Maximum Ratings
(1)
Tamb.= +25°C
Symbol
V+
V-
Ai
Pin
Tj
Ta
Tstg
(1)
Parameter
Values
8
-8
-2, 8
23
175
-40 to +85
-55 to +150
Unit
V
V
V
dBm
°C
°C
°C
Maximum positive bias voltage
Minimum negative bias voltage
CTRL voltage (Vctrl _low, Vctrl _high)
Maximum Input power
Junction temperature
Operating temperature range
Storage temperature range
Operation of this device above anyone of these parameters may cause permanent damage.
Ref. : DSCHT40121069 - 10 Mar 11
3/14
Specifications subject to change without notice
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UMS [ UNITED MONOLITHIC SEMICONDUCTORS ]
