DAICO DAT41944 Datasheet

FEATURES

4 BIT

DC - 2000 MHz
2 dB LSB, 30 dB Range
TTL Driver
14 Pin DIP
High Intercept Point

PART IDENTIFICATION

.87

.20

.22

SQUARE
CORNER

.300

.600

.100
TYP

17

14

CONTRASTING
COLOR BEAD

8

.018 DIA LEAD
14 PLACES

.50

.xx = .02

.xxx = .010

MODEL NO.

DAT41944

GaAs 4 Section Attenuator

“0” “1” “0” “0”

+5V

14 13 12 11 10 9

RF IN

16 DB

•• •

16 DB 8 DB

•

•

8 DB 4 DB

•

•

• •••

GND GND

2 DB

4 DB 2 DB

•

•

GND

•

•

•

654321 7

GNDGNDGND

-15V
8

RF OUT

2.6

2.4

2.2

2.0

1.8

1.6

1.4

1.2

1.0

VSWR

I.L. (dB)

3.2

2.8

2.4

2.0

1.6

1.2

0.8

0.4

0

TYPICAL PERFORMANCE

1

41040100 400 1000 3000

at 25°C

VSWR

FREQUENCY (MHz)

I.L. (dB)

GUARANTEED PERFORMANCE

Parameter Min Typ Max Units Conditions

Operating Frequency DC 2000 MHz
DC Current 28 35 mA At +5 VDC Supply

Control Type TTL 4 Line

Logic “1” = Attenuation

Control Current

High

Low

Insertion Loss 2.5 3.0 dB
Attenuation

LSB

Range

0 30 dB 2, 4, 8, 16

Accuracy

VSWR 1.4/1 2/1
Impedance 50 OHMS
Switching Speed 33 100 nSec 50% TTL to 90% / 10% RF
Transition (Rise/Fall) Time 20 25 nSec 10% / 90% - 90% / 10% RF
Switching (Video) Transients 38 100 mV Peak Value
Intercept Points

RF Power

2nd

3rd

Operate

No Damage

Operating Temperature -55 +25 +85 °CTA

18 25 mA At -15 VDC Supply

Logic “0” = Thru

1 ±40 µA VIH = +2.7 Volts
1 ±40 µA VIL = +0.5 Volts

2.0 dB

dB ± (0.25 dB +2% of Atten.

Setting in dB)

+50 +54 dBm Above 20 MHz
+30 +36 dBm Above 20 MHz

+16 +10 dBm 0.1 dB Compression (>100 MHz)

+20 dBm

DAICO I ndustries

Rev. A / Iss. 1