DAICO DA0784-1 Datasheet

FEATURES

4 BIT

.530±.010

.530±.010

.100

.200

10 - 1000 MHz

0.8 mA, +5 VDC
1 dB LSB, 15 dB Range
20 nSec Switching Speed
12 nSec Transition Time
48 mV Transients
TTL Control
12 Pin Surface Mount Package
See DA0984-1 for 12 Pin TO-8 Package

SHADED AREA IS
METALIZED GND PLANE
(GOLD PLT)

1

.005±.002

TYP

.015 TYP

.043 TYP

.380

.340

SQ.

SQ.

.060±.010

TYP

4

C

L

6

.100

.135±.010

.060±.010

1

3

12

10

9

7

C

L

.200

.520 MAX

SQ.

.025

12

.360

SQ.

.080 TYP

MODEL NO.

DA0784-1

GaAs 4 Section Attenuator

RF

IN/OUT

7

2,4-6,8

GND +5V 8dB 4dB 2dB 1dB

8dB 4dB 2dB 1dB

•• •• •• ••

••••

9

10 11 12 1

"1" "0" "0" "0"

RF

OUT/IN

3

VSWR

2.2 3.0

2.0

2.5

1.8

2.0

1.6

1.5

1.4

1.0

1.2

0.5

1.0

I.L. (dB)

0

GND PLANE AND BOTTOM
SURFACE OF LEADS ARE
FLUSH WITH SAME SURFACE

.xx = .02

.xxx = .010

TYPICAL PERFORMANCE

at 25°C

I. LOSS

VSWR

1000

FREQUENCY (MHz)

100101

500505

3000

GUARANTEED PERFORMANCE

Parameter Min Typ Max Units Conditions

Operating Frequency 10 1000 MHz
DC Current 0.8 2.0 mA At +5 VDC Supply
Control Type TTL 4 Line

Logic “1” = Attenuation

Control Current

High

Low

1 ±20 µA VIH = +2.7 Volts
1 ±20 µA VIL = 0.5 Volts

Insertion Loss 1.9 2.5 dB MHz
Attenuation

LSB

Range

0 15 dB 1, 2, 4, 8

Accuracy

1dB

VSWR 1.2/1 1.6/1
Impedance 50 OHMS
Switching Speed 20 30 nSec 50% TTL - 90% / 10% RF
Transition (Rise/Fall) Time 12 nSec 90% / 10% or 10% / 90% RF
Switching (Video) Transients 48 mV Peak Value
Intercept Points

RF Power

2nd

3rd

Operate

No Damage

+54 dBm 70 MHz / 50 MHz
+38 dBm 35 MHz / 50 MHz

+9 +6 dBm 0.1 dB Compression (<50 MHz)

+14 +10 dBm 0.1 dB Compression (>50 MHz)

+23 dBm

Operating Temperature -55 +25 +85 °CTA

Logic “0” = Thru

dB +0.15 dB +2% of Atten.

Setting in dB

-0.35 dB +2% of Atten.
Setting in dB

DAICO I ndustries

Rev. D / Iss. 1