Digital Attenuator
50 dB, 6-Bit, TTL Driver, DC - 2.4 GHz
Rev. V4
MAAD-007082-000100
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M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
changes to the product(s) or information contained herein without notice.
2
ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions
is considering for development. Performance is based on target specifications, simulated results,
and/or prototype measurements. Commitment to develop is not guaranteed.
PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology
Solutions has under development. Performance is based on engineering tests. Specifications are
typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available.
Commitment to produce in volume is not guaranteed.
Electrical Specifications: TA = 25°C, Z0 = 50 Ω
Parameter Frequency Units Min Typ Max
Insertion Loss DC - 2.4 GHz dB — 5.5 6.0
Attenuation Accuracy DC - 2.4 GHz
DC - 2.4 GHz
dB
dB
—
—
—
—
±(.3 +5% of atten setting)
±(.5 +8% of atten setting)
VSWR DC - 2.4 GHz Ratio — 1.8:1 2:1
Switching Speed —
—
ns
ns
—
—
75
20
150
50
1 dB Compression 50 MHz
0.5 - 2.40 GHz
dBm
dBm
—
—
+21
+24
—
—
Input IP3 50 MHz
0.5-2.4 GHz
dB
dB
—
—
+35
+48
—
—
+Vcc
-Vee
—
—
V
V
4.75
-8.0
5.0
-5.0
5.25
-4.75
Logic “0” — V 0.0 — 0.8
Logic “1” — V 2.0 — 5.0
Test Conditions
—
Individual Bits 1-2-4-8-16-32 dB
Any Combination of Bits 1 to 50 dB
Full Range
50% Cntl to 90%/10% RF
10% to 90% or 90% to 10%
—
—
Two-tone inputs up to +5 dBm
—
—
Sink Current is 20 µA max.
Source Current is 20 µA max.
VIL
VIH
LOW-level input voltage
HIGH-level input voltage
—
—
V
V
0.0
2.0
—
—
0.8
5.0
lin (Input Leakage Current) Vin = VCC or GND — uA -1.0 — 1.0
Thermal Resistance θjc — — °C/W — 15 —
Icc
(Quiescent Supply Current)
Vcntrl = VCC or GND — uA — 250 400
ΔIcc3
(Additional Supply Current
Per TTL Input Pin)
VCC = Max, Vcntrl = VCC - 2.1 V — mA — — 1.0
IEE VEE min to max, Vin = VIL or VIH — mA -1.0 -0.2 —
Absolute Maximum Ratings 3,4
Parameter Absolute Maximum
Max. Input Power
0.05 GHz
0.5 - 2.4 GHz
+27 dBm
+34 dBm
VCC -0.5V ≤ VCC ≤ +7.0V
VEE -8.5V ≤ VEE ≤ +0.5V
VCC - VEE -0.5V ≤ VCC - VEE ≤ 14.5V
Vin5 -0.5V ≤ Vin ≤ VCC + 0.5V
Operating Temperature -40ºC to +85ºC
Storage Temperature -65ºC to +125ºC
3. Exceeding any one or combination of these limits may cause
permanent damage to this device.
4. M/A-COM does not recommend sustained operation near
these survivability limits.
5. Standard CMOS TTL interface, latch-up will occur if logic
signal is applied prior to power supply.
Truth Table
C32 C16 C8 C4 C2 C1 Attenuation
0 0 0 0 0 0 Loss, Reference
0 0 0 0 0 1 1.0 dB
0 0 0 0 1 0 2.0 dB
0 0 0 1 0 0 4.0 dB
0 0 1 0 0 0 8.0 dB
0 1 0 0 0 0 16.0 dB
1 0 0 0 0 0 32.0 dB
1 1 0 0 1 0 50.0 dB
0 = TTL Low; 1 = TTL High