ADS-41V-1000
15 dB DIGITAL ATTENUATOR
50 to 1500 MHz / 0 to 15 dB in 1 dB Steps / 4-Bit Direct TTL Control / Monotonic / +5V Supply
V Package Outline - 24 pin Dual In Line
TRUTH TABLE
Attenuation
Setting, dB
Reference
1
2
4
8
Control Inputs
‘‘6" ’’7" ‘‘8" ’’9"
0
1
0
0
0
0
0
1
0
0
0
0
0
1
0
0
0
0
0
1
GENERAL SPECIFICATIONS
Frequency Range:
Attenuation Range:
Minimum Step Size:
Attenuation Flatness:
Attenuation Accuracy:
Insertion Loss:
Phase Variation:
VSWR:
Impedance:
Switching Delay Time:
Switching Transients:
Bias Requirement:
Input Intercept Point:
Input Power:
Weight, nominal:
Operating Temperature:
50 - 1500 MHz
0 - 15 dB
1 dB
±
0.5 dB/bit max.
±
1.0 dB max
±
0.5 dB at f
o
4 dB max.
±
10° typ.
1.7:1 max.
50
Ω
nom.
2
µs
typ.
20 mV typ.
+5 VDC
@ 80 mA nom.
‘‘1" = Logic High TTL
‘‘0" = Logic Low TTL
(50% control transition to 10/90% RF)
(50% control transition to 10/90% RF)
+32 dBm typ.
0.25 W max.
0.4 oz (11 g)
-- 55° to +85°C
Typical Performance
NOTES:
1. Tolerance on 3 place decimals
±
.010(.25) except as noted.
2. Dimensions in inches over millimeters.
3. Lead dimensions apply only at body.
4. All unmarked terminals are ground.
General Notes:
1. The ADS-41V-1000 is constant impedance, 4-bit digital attenuator covering 50 to 1500 MHz and driven directly by TTL logic. PIN diode switched attenuator pads are
activated by Advanced Fact™ C-MOS, TTL compatible logic drivers, allowing high speed operation without need of a negative supply.
2. Careful design of thick film resistive pads and detailed selection of suitable PIN diodes provide a wide bandwidth with minimal phase shift.
25Mar96
For further information contact
MERRIMAC / 41 Fairfield Pl., West Caldwell, NJ, 07006 / 973-575-1300 / FAX 973-575-0531
MERRIMAC [ MERRIMAC INDUSTRIES, INC. ]
