hmc542lp4 Hittite Microwave Corporation, hmc542lp4 Datasheet - Page 3
hmc542lp4
Manufacturer Part Number
hmc542lp4
Description
0.5db Lsb 6-bit Digital Attenuator Smt, Dc - 3 Ghz
Manufacturer
Hittite Microwave Corporation
Datasheet
1.HMC542LP4.pdf
(8 pages)
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5 - 184
5
Worst Case Step Error
Between Successive Attenuation States
Timing
Timing Diagram
Serial Input Setup Time
Hold time from Serial
Input to Shift Clock
Setup time from Shift
Clock to Latch Enable
Latch Enable Window,
Latch Enable to C0.5
through C8
Setup time from Reset to
Shift Clock
Clock Frequency
(1/tclk)
-0.2
-0.4
-0.6
-0.8
0.8
0.6
0.4
0.2
-1
1
0
0
Parameter
0.5
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
1
FREQUENCY (GHz)
1.5
Symbol
tlsup
fclk
tpd
ts
th
-
2
2.5
Min.
20
40
20
0
Vcc = +5V
-
-
3
v02.0108
Order On-line at www.hittite.com
Max.
30
30
-
-
-
-
3.5
SERIAL CONTROL ATTENUATOR, DC - 3 GHz
Units
MHz
4
ns
ns
ns
ns
ns
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
Digital Control Voltages
Serial Input Truth Table
Truth Table
Any combination of the above states will provide an attenuation
approximately equal to the sum of the bits selected.
High
High
High
High
High
High
Enable
C16
Low
Low
Latch
X
X
HMC542LP4
High
High
High
High
High
High
Low
Low
C8
State
High
Low
Clock
Shift
Control Voltage Input
X
X
High
High
High
High
High
High
Low
Low
C4
Reset
H
H
L
High
High
High
High
High
High
Low
Low
C2
High
High
High
High
High
High
Low
Low
C1
Contents of shift register
Shift register clocked
transferrred to Digital
Shift register cleared
/
542LP4E
3.5 to 5.0V
Vcc = +5V
0 to 1.3V
Attenuator
C0.5
High
High
High
High
High
High
Function
Low
Low
RF1 - RF2
Reference
tion State
Attenua-
31.5 dB
0.5 dB
16 dB
1 dB
2 dB
4 dB
8 dB
I.L.