DAICO DA0879 Datasheet

Parameter Min Typ Max Units Conditions

Operating Frequency 800 1200 MHz
DC Current 14 20 mA At +12 VDC Supply
Control Type TTL 1 Line

Logic “0” = Attenuation
Logic “1” = Thru

Control Current

High

0 µA VIH = +2.7 V

Low

0 µA VIL = +0.5 V

Insertion Loss 0.9 1.2 dB
Attenuation

LSB

50 dB

Range

050dB

Accuracy

dB ± (0.25 dB +2% of Atten.

Setting in dB)

Phase Change Vs. Attenuation 2 ±5 DEG

VSWR 1.15/1 1.25/1
Impedance 50 OHMS
Switching Speed 0.3 1 µSec 50% TTL to 90% / 10% RF
Transition (Rise/Fall) Time 80 nSec 90% / 10% or 10% / 90% RF
Switching (Video) Transients 2.1 V Peak Value
Intercept Points

2nd

+90 dBm 155 MHz / 750 MHz

3rd

+45 dBm 755 MHz / 750 MHz

RF Power

Operate

+30 +20 dBm 0.1 dB Compression

No Damage

+30 dBm

Operating Temperature -55 +25 +125 °CTA

FREQUENCY (MHz)

TYPICAL PERFORMANCE

at 25°C

VSWR

I.L. (dB)

2.0

1.8

1.6

1.4

1.2

1.0

2.5

2.0

1.5

1.0

0.5

0

100 400 1000 3000

VSWR

I. LOSS

.500

PART IDENTIFICATION

PIN 1 IS BRAZED TO CASE

.300

.100 TYP

.14

.065

.500

.010

±.002

TYP

.15 TYP

.xx = .02

.xxx = .010

MODEL NO.

DA0879

PIN Diode 1 Section Attenuator

FEATURES

800 - 1200 MHz
50 dB Attenuator

0.9 dB Insertion Loss
Constant Phase
TTL Control
Small 8 Pin 0.5 Sq. Package

1 BIT

GUARANTEED PERFORMANCE

DAICO Industries

Rev. A / Iss. 1

••

•

•••

4

GND

RF

OUT/IN

5

8

+12V

RF

IN/OUT

CONT ”1”

7

1236