HMC624LP4 Datasheet, PDF (5/10 Pages) Hittite Microwave Corporation – 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL ATTENUATOR, DC - 6 GHz

v02.0807
HMC624LP4 / 624LP4E
0.5 dB LSB GaAs MMIC 6-BIT
DIGITAL ATTENUATOR, DC - 6 GHz
10
Power-Up States
Using the Parallel PUP truth table the attenuator can
be turned on at a specific attenuation state. By using
the PUP1 and PUP2 line four different attenuation
states can be selected. It can also be used in the
Direct Parallel Mode using the Control Voltage Inputs
to select attenuation values.
Parallel PUP Truth Table
P/S
LE
PUP2
PUP1 Attenuation State
0
0
0
0
31.5 dB
0
0
1
0
24 dB
0
0
0
1
16 dB
0
0
1
1
8 dB
0
1
X
X
0.5 to 31.5 dB
Note: Power-Up with LE= 1 provides normal parallel operation
with D0 - D5, and PUP1 and PUP2 are not active.
Absolute Maximum Ratings
RF Input Power (DC - 6 GHz) ^[1]
27 dBm (T = +85 °C)
Digital Inputs (Reset, Shift Clock,
Latch Enable & Serial Input)
-1.5V to (Vdd +1.5V) Vdc
Bias Voltage (Vdd)
5.6 Vdc
Channel Temperature
150 °C
Continuous Pdiss (T = 85 °C)
(derate 9.8 mW/°C above 85 °C) ^{[1] 0.635 W}
Thermal Resistance
102 °C/W
Storage Temperature
-65 to +150 °C
Operating Temperature
-40 to +85 °C
[1] At max gain settling
Bias Voltage
Vdd (Vdc)
3
5
Idd (Typ.) (mA)
1.8
2.0
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
Truth Table
Control Voltage Input
Attenuation State
D5 D4 D3 D2 D1 D0
High High High High High High
Reference
I.L.
High High High High High Low
0.5 dB
High High High High Low High
1 dB
High High High Low High High
2 dB
High High Low High High High
4 dB
High Low High High High High
8 dB
Low High High High High High
16 dB
Low Low Low Low Low Low
31.5 dB
Any combination of the above states will provide an attenuation
approximately equal to the sum of the bits selected.
TTL/CMOS Control Voltage
State
Low
High
Vdd= +3V or +5V
0 to 0.8V
2.0V to Vdd
10 - 206
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