THICK FILM
ATTENUATORS, DIGITAL DAD SERIES
DROP-IN REMOVABLE SMA 0.82 GHz
GENERAL INFORMATION
The DAD Series of Precision Digital Attenuators utilize Thick Film
Technology for all microwave and logic functions. All conductors,
attenuator elements and bias resistors are screened on a single alumina
substrate to achieve increased reliability and enhanced performance. All
additional circuit elements including pin diodes, integrated circuits,
capacitors, and coils are bonded directly to the Thick Film. Customized
driver circuits are integrated on the RF substrate.
FEATURES
Removable SMA Connectors
Internal T
2
L Drivers
Thick Film
Accuracy 1/2 LSB
GENERAL SPECIFICATIONS
Frequency Range: 0.8-2 GHz
RF Impedance: 50 Ohms
DC Power: 5V 0.5 at 40ma/Bit
Logic: T
2
L
Driver: Integrated on RF Substrate
Attenuation Range: 0 to 63 dB
Accuracy: 0.5 LSB
RF Power: +10 dBm Operating
+20 dBm Survivability
Operating Temperature: 40C to +70C
Storage Temperature: 55C to +85C
Switching Speed: 100 nsec Typ; 125 nsec maximum
Package: Aluminum, Silver Plated
Part No. 1, 10 2 3 4 5 6 7 8 9
DAD-125 -05 RF GND 8 dB 4 dB 2 dB 1 dB .5 dB N/C +5V
- 1 RF GND 16 dB 8 dB 4 dB 2 dB 1 dB N/C +5V
- 2 RF GND 16 dB 8 dB 4 dB 2 dB N/C 32 dB +5V
LOGIC & RF CONNECTIONS
TYPICAL MODEL NO.
DAD - 125 - 05**
Basic Freq. LSB
Series # Bits
REMOVABLE SMA CONNECTORS
ELECTRICAL PERFORMANCE
MSB Ins Power Phase
Frequency LSB Maximum Loss dB VSWR Supply mA Degrees
Part No. GHz # of Bits dB dB Maximum Maximum Maximum Typical
DAD-125-** 0.8-2 5 0.5 32 4.0 1.5 200 15
ATTEN.
DRIVER
LOGIC +5V
TYPICAL
ATTENUATOR CELL
0.073[1,85]
DIA. THRU
(4PLS)
0.10[2,5]
MIN.
.15
[3,8]
1.95[49,5]
2.09[53,09]
.100[2,5]
TYP. (7) PL.
2.25[57,15]
1 10
0.59
[14,99]
0.75
[19,1]
.38
[9,65]
KDI
DAD-125-1
(PINS REF. ONLY)
.25[6,4]
.19[4,83]
.38[9,65]
MAX
(2) PL
MTG.
SURFACE
0.77
[19,56]
MATES WITH "SMA"
MALE CONN. PER
MIL-C-39012.2 PL
FIELD REPLACEABLE
CONN. SHELL INTERNALLY
MATES WITH .017[0,43]
.019[0,48] DIA.
X
.100[2,5] MAX. LG. PIN (2 PL)
.095[2,41]
11-5-02
KEY: Inches[Millimeters] .XX .03 .XXX .010 [.X 0.8 .XX 0.25]
60 South Jefferson Road, Whippany, NJ 07981
Tel: 973-887-8100 Fax: 973-884-0445
email: sales@mcekdi-integrated.com
See us on the web @ www.mcekdi-integrated.com
PDF 
ZIP